WO2021227830A1

WO2021227830A1 - Antenna apparatus and electronic device

Info

Publication number: WO2021227830A1
Application number: PCT/CN2021/089253
Authority: WO
Inventors: 张帅; 周肖; 雍征东; 路宝
Original assignee: 西安电子科技大学; Oppo广东移动通信有限公司
Priority date: 2020-05-12
Filing date: 2021-04-23
Publication date: 2021-11-18

Abstract

The present application provides an antenna apparatus and an electronic device. The antenna apparatus comprises multiple antenna units arranged at intervals, multiple decoupling networks, a first decoupling transmission line, a second decoupling transmission line, and a third decoupling transmission line. The multiple decoupling networks respectively correspond to the multiple antenna units. Each of the decoupling networks has an input port, an output port, a first connection port, a second connection port, and a third connection port. The output port is connected to a corresponding antenna unit. The input port is connected to a radio frequency chip. The first decoupling transmission line is connected between respective first connection ports of adjacent decoupling networks. The second decoupling transmission line is connected between respective second connection ports of adjacent decoupling networks. The third decoupling transmission line is connected between respective third connection ports of adjacent decoupling networks. The electronic device comprises the antenna apparatus.

Description

天线装置和电子设备Antenna device and electronic equipment

技术领域Technical field

本申请涉及天线去耦技术领域，具体涉及一种天线装置和电子设备天线装置。This application relates to the technical field of antenna decoupling, and in particular to an antenna device and an electronic device antenna device.

背景技术Background technique

天线可以高效地发射与接收电磁波，是无线通信***中不可或缺的重要组成部分。然而，随着科学技术的进步，单个天线难以满足日益增高的性能需求。为了解决单个天线的方向性较差和辐射增益较低等问题，可将若干个辐射特性相同的天线单元按照一定的几何结构排列起来组成阵列天线，从而增强阵列天线的辐射性能，产生较为灵活的方向图，以满足不同场景的需求。Antennas can efficiently transmit and receive electromagnetic waves and are an indispensable part of wireless communication systems. However, with the advancement of science and technology, it is difficult for a single antenna to meet the ever-increasing performance requirements. In order to solve the problems of poor directivity and low radiation gain of a single antenna, several antenna elements with the same radiation characteristics can be arranged according to a certain geometric structure to form an array antenna, thereby enhancing the radiation performance of the array antenna and producing a more flexible Directional map to meet the needs of different scenarios.

发明内容Summary of the invention

本申请的一方面提供一种天线装置，包括多个间隔设置的天线单元、多个去耦网络、第一去耦传输线、第二去耦传输线和第三去耦传输线。多个去耦网络与所述多个天线单元一一对应，其中，每个所述去耦网络均具有输入端口、输出端口、第一连接端口、第二连接端口和第三连接端口；所述输出端口与对应的天线单元之间连接，所述输入端口用于与射频芯片连接。第一去耦传输线连接在相邻的所述去耦网络的第一连接端口之间；第二去耦传输线连接在相邻的所述去耦网络的第二连接端口之间；第三去耦传输线，连接在相邻的所述去耦网络的第三连接端口之间。An aspect of the present application provides an antenna device including a plurality of antenna units arranged at intervals, a plurality of decoupling networks, a first decoupling transmission line, a second decoupling transmission line, and a third decoupling transmission line. A plurality of decoupling networks are in one-to-one correspondence with the plurality of antenna units, wherein each of the decoupling networks has an input port, an output port, a first connection port, a second connection port, and a third connection port; The output port is connected with the corresponding antenna unit, and the input port is used for connecting with the radio frequency chip. The first decoupling transmission line is connected between the first connection ports of the adjacent decoupling networks; the second decoupling transmission line is connected between the second connection ports of the adjacent decoupling networks; the third decoupling The transmission line is connected between the adjacent third connection ports of the decoupling network.

本申请的另一方面提供一种电子设备，该电子设备包括壳体、显示屏组件、射频芯片和天线装置。其中，显示屏组件与所述壳体连接，并与所述壳体形成容置空间。射频芯片设置在所述容置空间内。天线装置包括多个间隔设置的天线单元、多个去耦网络、第一去耦传输线、第二去耦传输线和第三去耦传输线。多个去耦网络与所述多个天线单元一一对应，其中，每个所述去耦网络均具有输入端口、输出端口、第一连接端口、第二连接端口和第三连接端口；所述输出端口与对应的天线单元之间连接，所述输入端口用于与射频芯片连接。第一去耦传输线连接在相邻的所述去耦网络的第一连接端口之间；第二去耦传输线连接在相邻的所述去耦网络的第二连接端口之间；第三去耦传输线，连接在相邻的所述去耦网络的第三连接端口之间。Another aspect of the present application provides an electronic device, which includes a housing, a display screen assembly, a radio frequency chip, and an antenna device. Wherein, the display screen assembly is connected with the casing and forms an accommodation space with the casing. The radio frequency chip is arranged in the accommodating space. The antenna device includes a plurality of antenna units arranged at intervals, a plurality of decoupling networks, a first decoupling transmission line, a second decoupling transmission line, and a third decoupling transmission line. A plurality of decoupling networks are in one-to-one correspondence with the plurality of antenna units, wherein each of the decoupling networks has an input port, an output port, a first connection port, a second connection port, and a third connection port; The output port is connected with the corresponding antenna unit, and the input port is used for connecting with the radio frequency chip. The first decoupling transmission line is connected between the first connection ports of the adjacent decoupling networks; the second decoupling transmission line is connected between the second connection ports of the adjacent decoupling networks; the third decoupling The transmission line is connected between the adjacent third connection ports of the decoupling network.

本申请的天线装置，在天线单元与馈源之间引入去耦网络(五端口网络)的概念，五端口网络则包括逐级设计和逐级连接的三端口网络和四端口网络，三端口网络和四端口网络级联实现去耦和带宽展宽。本申请无需改变阵列天线单元的结构，只需对第一去耦传输线、第二去耦传输线和第三去耦传输线的长度d ₃、d ₄和d ₅以及三端口网络的S参数和四端口网络的S参数进行配置，即可调节天线单元之间在第一频段和第二频段的耦合度，即能降低天线单元间的互耦，拓展扫描角，提升扫描增益。 The antenna device of the present application introduces the concept of a decoupling network (five-port network) between the antenna unit and the feed. The five-port network includes a three-port network and a four-port network that are designed and connected step by step, and a three-port network It is cascaded with a four-port network to achieve decoupling and bandwidth expansion. This application does not need to change the structure of the array antenna unit, only the lengths d ₃ , d ₄ and d ₅ of the first decoupling transmission line, the second decoupling transmission line and the third decoupling transmission line, as well as the S parameters and four ports of the three-port network The S parameters of the network can be configured to adjust the coupling degree between the antenna units in the first frequency band and the second frequency band, that is, it can reduce the mutual coupling between the antenna units, expand the scanning angle, and increase the scanning gain.

附图说明Description of the drawings

为了更清楚地说明本申请实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍。显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图，其中：In order to more clearly describe the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings that need to be used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative work, other drawings can be obtained based on these drawings, among which:

图1是本申请实施例的电子设备的结构示意图；FIG. 1 is a schematic diagram of the structure of an electronic device according to an embodiment of the present application;

图2是本申请实施例的阵列天线的去耦原理示意图；2 is a schematic diagram of the decoupling principle of the array antenna according to an embodiment of the present application;

图3是本申请实施例的阵列天线的去耦原理示意图，其中显示了去耦网络中的三端口网络和四端口网络的连接关系；3 is a schematic diagram of the decoupling principle of the array antenna according to an embodiment of the present application, which shows the connection relationship between the three-port network and the four-port network in the decoupling network;

图4是本申请实施例的阵列天线的结构示意图；FIG. 4 is a schematic structural diagram of an array antenna according to an embodiment of the present application;

图5是本申请实施例的第一去耦网络中四端口网络的结构示意图；FIG. 5 is a schematic structural diagram of a four-port network in the first decoupling network according to an embodiment of the present application;

图6是本申请实施例的第二去耦网络中四端口网络的结构示意图；FIG. 6 is a schematic structural diagram of a four-port network in a second decoupling network according to an embodiment of the present application;

图7是本申请实施例的电子设备的立体结构示意图；FIG. 7 is a schematic diagram of a three-dimensional structure of an electronic device according to an embodiment of the present application;

图8是本申请一些实施例的天线装置的立体视图；Fig. 8 is a perspective view of antenna devices according to some embodiments of the present application;

图9是图8的天线装置的仰视图；Fig. 9 is a bottom view of the antenna device of Fig. 8;

图10是本申请另一些实施例的天线装置的仰视图；Fig. 10 is a bottom view of antenna devices according to other embodiments of the present application;

图11是本申请又一些实施例的天线装置的仰视图；FIG. 11 is a bottom view of antenna devices according to still other embodiments of the present application;

图12是本申请实施例的天线装置的层状结构示意图，其中显示了两个天线单元；FIG. 12 is a schematic diagram of a layered structure of an antenna device according to an embodiment of the present application, in which two antenna elements are shown;

图13是本申请另一实施例的天线装置的示意图；FIG. 13 is a schematic diagram of an antenna device according to another embodiment of the present application;

图14示出了连接去耦网络前，本申请实施例的天线装置中两个天线单元件的反射系数曲线；FIG. 14 shows the reflection coefficient curves of two antenna elements in the antenna device of the embodiment of the present application before connecting the decoupling network;

图15示出了连接去耦网络前后，本申请实施例的天线装置中的天线单元的反射系数的比对曲线；FIG. 15 shows a comparison curve of the reflection coefficient of the antenna unit in the antenna device of the embodiment of the present application before and after connecting the decoupling network;

图16示出了连接去耦网络前后，本申请实施例的天线装置中的两个天线单元间的耦合强度的比对曲线；Fig. 16 shows a comparison curve of the coupling strength between two antenna units in the antenna device of the embodiment of the present application before and after connecting the decoupling network;

图17示出了连接去耦网络前后，波束扫描至0°时，本申请实施例的天线装置的增益扫频比对曲线；FIG. 17 shows the gain sweep frequency comparison curve of the antenna device of the embodiment of the present application when the beam is scanned to 0° before and after connecting the decoupling network;

图18示出了连接去耦网络前后，波束扫描至45°时，本申请实施例的天线装置的增益扫频比对曲线；和FIG. 18 shows the gain sweep frequency comparison curve of the antenna device of the embodiment of the present application when the beam is scanned to 45° before and after connecting the decoupling network; and

图19示出了连接去耦网络前后，波束扫描至50°时，本申请实施例的天线装置的增益扫频比对曲线。FIG. 19 shows the gain sweep frequency comparison curve of the antenna device of the embodiment of the present application when the beam is scanned to 50° before and after connecting the decoupling network.

具体实施方式Detailed ways

下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述。显然，所描述的实施例仅是本申请的一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

在本文中提及“实施例”意味着，结合实施例描述的特定特征、结构或特性可以包含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例，也不是与其他实施例互斥的独立的或备选的实施例。本领域技术人员显式地和隐式地理解的是，本文所描述的实施例可以与其他实施例相结合。The reference to "embodiments" herein means that a specific feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art clearly and implicitly understand that the embodiments described herein can be combined with other embodiments.

阵列天线，尤其是小间距阵列天线，存在着互耦较强的问题。天线单元间的互耦在很大程度上影响天线单元及其阵列的匹配特性和空间辐射特性，具体表现为以下几点。Array antennas, especially small-pitch array antennas, have the problem of strong mutual coupling. The mutual coupling between the antenna elements affects the matching characteristics and spatial radiation characteristics of the antenna elements and their arrays to a large extent, and the specific manifestations are as follows.

(1)方向图：天线单元上的电流在互耦作用下其分布发生了改变，导致部分辐射能量进一步耦合到其他天线单元，其中一部分耦合能量被端接负载吸收而消耗，而另一部分能量又会再次辐射。所以，天线单元的方向图会发生畸变。此处所述的端接负载是天线馈源后端等效出来的一个参数；在画等效电路时，可将天线馈源的整个后端用一个电阻来代替，并可称为端接负载。(1) Pattern: The distribution of the current on the antenna unit changes under the action of mutual coupling, causing part of the radiated energy to be further coupled to other antenna units, part of the coupling energy is absorbed and consumed by the terminal load, and the other part of the energy is Will radiate again. Therefore, the pattern of the antenna unit will be distorted. The termination load mentioned here is a parameter equivalent to the back end of the antenna feed; when drawing the equivalent circuit, the entire back end of the antenna feed can be replaced by a resistor, which can be called a termination load .

(2)输入阻抗：受到互耦影响，阵列中天线单元的输入阻抗会发生改变，并与孤立环境中天线单元的输入阻抗不同，因此各阵列中天线单元的匹配情况不同并且匹配特性会受到影响。(2) Input impedance: Affected by mutual coupling, the input impedance of the antenna unit in the array will change, and is different from the input impedance of the antenna unit in an isolated environment, so the matching situation of the antenna unit in each array is different and the matching characteristics will be affected .

(3)增益：在天线单元中存在热损耗以及阻抗不匹配引起的反射损耗等，从而使得天线单元的辐射功率比发射功率要小，反射系数在互耦的作用下会发生变化，故天线单元的增益受到影响。(3) Gain: There is heat loss and reflection loss caused by impedance mismatch in the antenna unit, so that the radiation power of the antenna unit is smaller than the transmission power, and the reflection coefficient will change under the action of mutual coupling, so the antenna unit The gain is affected.

在相关技术中，解决互耦效应对天线单元的方向图、输入阻抗、增益等特性的影响方面，通常采用以下五种方法：缺陷地结构(DGS-Defected Ground Structure)去耦法、中和线法(NLT-Neutralization Line Technique)去耦法、带阻滤波去耦法、电磁带隙结构(EBG,Electromagnetic Band Gap)去耦法、超材料去耦法(MDT,Metamaterial Decoupling Technique)。In related technologies, the following five methods are usually used to solve the influence of mutual coupling effects on the antenna unit's pattern, input impedance, gain and other characteristics: DGS-Defected Ground Structure (DGS-Defected Ground Structure) decoupling method, neutralization line Method (NLT-Neutralization Line Technique) decoupling method, band-stop filter decoupling method, electromagnetic band gap structure (EBG, Electromagnetic Band Gap) decoupling method, metamaterial decoupling method (MDT, Metamaterial Decoupling Technique).

然而，上述方法都是针对天线单元间耦合消除方法的研究，未能对天线单元间耦合效应进行精确定义与控制。However, the above methods are all researches on the method of eliminating coupling between antenna elements, and fail to accurately define and control the coupling effect between antenna elements.

本申请提供了一种电子设备，该电子设备的阵列天线可以对天线单元间的耦合效应进行自定义，并通过耦合效应的设计实现对天线单元的辐射方向图的控制，例如拓宽扫描角、提升扫描增益、消除扫描盲区等。This application provides an electronic device. The array antenna of the electronic device can customize the coupling effect between the antenna elements, and realize the control of the radiation pattern of the antenna element through the design of the coupling effect, such as widening the scanning angle and improving Scan gain, eliminate scan blind area, etc.

该电子设备可以是手机、平板电脑、PDA(Personal Digital Assistant，个人数字助理)、POS(Point of Sales，销售终端)、车载电脑、CPE(Customer Premise Equipment，客户前置设备)等终端设备。以下以手机作为示例对本申请进行介绍。The electronic device may be a mobile phone, a tablet computer, a PDA (Personal Digital Assistant), a POS (Point of Sales, sales terminal), a car computer, a CPE (Customer Premise Equipment, customer front equipment) and other terminal devices. The following uses a mobile phone as an example to introduce this application.

如图1所示，手机100可以包括：RF(Radio Frequency，射频)电路101、存储器102、中央处理器(Central Processing Unit，CPU)103、外设接口104、音频电路105、扬声器106、电源管理芯片107、输入/输出(I/O)子***108、触摸屏109、其他输入/控制设备110以及外部端口111，这些部件通过一个或多个通信总线或信号线112来通信。As shown in Figure 1, the mobile phone 100 may include: an RF (Radio Frequency) circuit 101, a memory 102, a central processing unit (CPU) 103, a peripheral interface 104, an audio circuit 105, a speaker 106, and power management The chip 107, an input/output (I/O) subsystem 108, a touch screen 109, other input/control devices 110, and an external port 111 communicate through one or more communication buses or signal lines 112.

应该理解的是，图示手机仅仅是电子设备的一个范例，并且手机100可以具有比图中所示出的更多的或者更少的部件，可以组合两个或更多的部件，或者可以具有不同的部件配置。图中所示出的各种部件可以在包括一个或多个信号处理和/或专用集成电路在内的硬件、软件、或硬件和软件的组合中实现。It should be understood that the illustrated mobile phone is only an example of an electronic device, and the mobile phone 100 may have more or fewer components than those shown in the figure, may combine two or more components, or may have Different component configurations. The various components shown in the figure may be implemented in hardware, software, or a combination of hardware and software including one or more signal processing and/or application specific integrated circuits.

下面结合图1对手机100的各个构成部件进行具体的介绍。Hereinafter, each component of the mobile phone 100 will be specifically introduced with reference to FIG. 1.

射频(RF)电路101主要用于建立手机与无线网络(即网络侧)的通信，实现手机与无线网络的数据接收和发送。例如收发短信息、电子邮件等。具体地，RF电路101接收并发送RF信号，RF信号也称为电磁信号，RF电路101将电信号转换为电磁信号或将电磁信号转换为电信号，并且通过该电磁信号与通信网络以及其他设备进行通信。RF电路101可以包括用于执行这些功能的已知电路，其包括但不限于具有天线阵列的天线***、RF收发机、一个或多个放大器、调谐器、一个或多个振荡器、数字信号处理器、CODEC(COder-DECoder，编译码器)芯片组、用户标识模块(Subscriber Identity Module，SIM)等等。The radio frequency (RF) circuit 101 is mainly used to establish communication between the mobile phone and the wireless network (ie, the network side), so as to realize the data reception and transmission between the mobile phone and the wireless network. For example, sending and receiving short messages, emails, etc. Specifically, the RF circuit 101 receives and transmits RF signals, which are also called electromagnetic signals. The RF circuit 101 converts electrical signals into electromagnetic signals or converts electromagnetic signals into electrical signals, and communicates with communication networks and other equipment through the electromagnetic signals. To communicate. The RF circuit 101 may include known circuits for performing these functions, including but not limited to an antenna system with an antenna array, an RF transceiver, one or more amplifiers, a tuner, one or more oscillators, digital signal processing Device, CODEC (COder-DECoder, codec) chipset, subscriber identity module (Subscriber Identity Module, SIM), etc.

存储器102可以被CPU103、外设接口104等访问，所述存储器102可以包括高速随机存取存储器，还可以包括非易失性存储器，例如一个或多个磁盘存储器件、闪存器件、或其他易失性固态存储器件。The memory 102 can be accessed by the CPU 103, the peripheral interface 104, etc. The memory 102 can include a high-speed random access memory, and can also include a non-volatile memory, such as one or more disk storage devices, flash memory devices, or other volatile Sexual solid-state storage devices.

中央处理器103通过运行存储在存储器102的软件程序以及模块，从而执行电子设备的各种功能应用以及数据处理。The central processing unit 103 executes various functional applications and data processing of the electronic device by running software programs and modules stored in the memory 102.

外设接口104可以将设备的输入和输出外设连接到CPU103和存储器102。The peripheral interface 104 can connect the input and output peripherals of the device to the CPU 103 and the memory 102.

I/O子***108可以将设备上的输入输出外设，例如触摸屏109和其他输入/控制设备110，连接到外设接口104。I/O子***108可以包括显示控制器1081和用于控制其他输入/控制设备110的一个或多个输入控制器1082。其中，一个或多个输入控制器1082从其他输入/控制设备110接收电信号或者向其他输入/控制设备110发送电信号，其他输入/控制设备110可以包括物理按钮(按压按钮、摇臂按钮等)、拨号盘、滑动开关、操纵杆、点击滚轮。值得说明的是，输入控制器1082可以与以下任一个连接：键盘、红外端口、USB接口以及诸如鼠标的指示设备。The I/O subsystem 108 can connect the input and output peripherals on the device, such as the touch screen 109 and other input/control devices 110, to the peripheral interface 104. The I/O subsystem 108 may include a display controller 1081 and one or more input controllers 1082 for controlling other input/control devices 110. Among them, one or more input controllers 1082 receive electrical signals from other input/control devices 110 or send electrical signals to other input/control devices 110, and other input/control devices 110 may include physical buttons (press buttons, rocker buttons, etc.) ), dial, slide switch, joystick, click wheel. It is worth noting that the input controller 1082 can be connected to any of the following: a keyboard, an infrared port, a USB interface, and a pointing device such as a mouse.

触摸屏109是用户终端与用户之间的输入接口和输出接口，将可视输出显示给用户，可视输出可以包括图形、文本、图标、视频等。The touch screen 109 is an input interface and an output interface between the user terminal and the user, and displays visual output to the user. The visual output may include graphics, text, icons, videos, and the like.

I/O子***108中的显示控制器1081从触摸屏109接收电信号或者向触摸屏109发送电信号。触摸屏109检测触摸屏上的接触，显示控制器1081将检测到的接触转换为与显示在触摸屏109上的用户界面对象的交互，即实现人机交互，显示在触摸屏109上的用户界面对象可以是运行游戏的图标、联网到相应网络的图标等。值得说明的是，设备还可以包括光鼠，光鼠是不显示可视输出的触摸敏感表面，或者是由触摸屏形成的触摸敏感表面的延伸。The display controller 1081 in the I/O subsystem 108 receives electrical signals from the touch screen 109 or sends electrical signals to the touch screen 109. The touch screen 109 detects the contact on the touch screen, and the display controller 1081 converts the detected contact into interaction with the user interface object displayed on the touch screen 109, that is, realizes human-computer interaction. The user interface object displayed on the touch screen 109 can be running The icon of the game, the icon of connecting to the corresponding network, etc. It is worth noting that the device may also include an optical mouse, which is a touch-sensitive surface that does not display visual output, or is an extension of the touch-sensitive surface formed by a touch screen.

音频电路105主要用于从外设接口104接收音频数据，将该音频数据转换为电信号，并且将该电信号发送给扬声器106。The audio circuit 105 is mainly used to receive audio data from the peripheral interface 104, convert the audio data into an electric signal, and send the electric signal to the speaker 106.

扬声器106用于将手机100通过RF电路101从无线网络接收的语音信号，还原为声音并向用户播放该声音。The speaker 106 is used to restore the voice signal received by the mobile phone 100 from the wireless network through the RF circuit 101 into sound and play the sound to the user.

电源管理芯片107用于为CPU103、I/O子***108及外设接口104所连接的硬件进行供电及电源管理。The power management chip 107 is used to perform power supply and power management for the hardware connected to the CPU 103, the I/O subsystem 108 and the peripheral interface 104.

以下针对该电子设备的RF电路101的天线***中的天线装置进行介绍。该天线装置通常包括多个紧密布置且间隔设置的天线单元、多个去耦网络以及第一去耦传输线、第二去耦传输线和第三去耦传输线。在至少两个相邻的天线单元中，每个天线单元与馈源之间均通过匹配网络连接。例如，本实施中，多个去耦网络与多个天线单元一一对应，每一去耦网络连接在馈源和对应天线单元之间。第一去耦传输线、第二去耦传输线和第三去耦传输线则连接在相邻的去耦网络之间。本申请的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。The following describes the antenna device in the antenna system of the RF circuit 101 of the electronic device. The antenna device usually includes a plurality of closely arranged and spaced antenna units, a plurality of decoupling networks, and a first decoupling transmission line, a second decoupling transmission line, and a third decoupling transmission line. In at least two adjacent antenna units, each antenna unit is connected to the feed through a matching network. For example, in this implementation, multiple decoupling networks correspond to multiple antenna units one-to-one, and each decoupling network is connected between the feed source and the corresponding antenna unit. The first decoupling transmission line, the second decoupling transmission line and the third decoupling transmission line are connected between adjacent decoupling networks. In the description of this application, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

本实施例以天线装置为包括两个相邻的天线单元10和20的阵列天线作为示例来对本申请进行介绍，其中，天线单元10可称为第一天线单元10，天线单元20可称为第二天线单元20。如图2所示，天线单元10和天线单元20相邻。天线单元10和天线单元20的辐射特性可以相同也可以不同。天线单元10可以从电子设备的馈源(射频收发器)接收激励电流，经放大、滤波、匹配调谐后激励天线单元10谐振于对应频率，从而产生对应频率的电磁波信号，与自由空间相同频率的电磁波信号耦合实现信号发射；天线单元10还可以在激励信号的激励下谐振于对应频率的天线单元耦合来自自由空间相同频率的电磁波信号，从而在天线单元10上形成感应电流，该感应电流经滤波、放大后进入射频收发器。In this embodiment, the present application is introduced by taking the antenna device as an array antenna including two

adjacent antenna elements

10 and 20 as an example. Among them, the antenna element 10 may be referred to as the first antenna element 10, and the antenna element 20 may be referred to as the first antenna element. Two antenna unit 20. As shown in FIG. 2, the antenna unit 10 and the antenna unit 20 are adjacent to each other. The radiation characteristics of the antenna unit 10 and the antenna unit 20 may be the same or different. The antenna unit 10 can receive the excitation current from the feed (radio frequency transceiver) of the electronic device, and after amplifying, filtering, matching and tuning, the antenna unit 10 is excited to resonate at the corresponding frequency, thereby generating an electromagnetic wave signal of the corresponding frequency, which is the same frequency as the free space. The electromagnetic wave signal coupling realizes signal transmission; the antenna unit 10 can also resonate with the antenna unit of the corresponding frequency under the excitation of the excitation signal to couple the electromagnetic wave signal of the same frequency from the free space, thereby forming an induced current on the antenna unit 10, and the induced current is filtered , After amplifying, enter the radio frequency transceiver.

相邻的两个天线单元10和20所对应的去耦网络之间相互连接，其中天线单元10对应的是第一去耦网络30，天线单元20对应的是第二去耦网络30’。The decoupling networks corresponding to two

adjacent antenna units

10 and 20 are connected to each other, wherein the antenna unit 10 corresponds to the first decoupling network 30, and the antenna unit 20 corresponds to the second decoupling network 30'.

第一去耦网络30和第二去耦网络30’均为五端口网络。第一去耦网络30具有连接馈源的输入端口(a ₁,b ₁)、连接天线单元10的输出端口(a ₂,b ₂)以及用于连接第二去耦网络30’的第一连接端口(a ₃,b ₃)、第二连接端口(a ₄,b ₄)和第三连接端口(a ₅,b ₅)。第二去耦网络30’具有连接馈源的输入端口(a’ ₁,b’ ₁)、连接天线单元20的输出端口(a’ ₂,b’ ₂)以及用于连接第一去耦网络30的第一连接端口(a’ ₃,b’ ₃)、第二连接端口(a’ ₄,b’ ₄)和第三连接端口(a’ ₅,b’ ₅)。长度为d ₁的传输线可形成输出端口(a ₂,b ₂)，并且具有特性阻抗Z ₀；长度为d ₂的传输线可形成输出端口(a’ ₂,b’ ₂)，并且具有特性阻抗Z ₀。长度为d ₃的第一去耦传输线连接第一去耦网络30的第一连接端口(a ₃,b ₃)与第二去耦网络30’的第一连接端口(a’ ₃,b’ ₃)，并且具有特性阻抗Z ₃；长度为d ₄的第二去耦传输线连接第一去耦网络30的第二连接端口(a ₄,b ₄)与第二去耦网络30’的第二连接端口(a’ ₄,b’ ₄)，并且具有特性阻抗Z ₄；长度为d ₅的第三去耦传输线连接第一去耦网络30的第三连接端口(a ₅,b ₅)与第二去耦网络30’的第三连接端口(a’ ₅,b’ ₅)，并且具有特性阻抗Z ₅。另外，a ₁、a’ ₁、a ₂、a’ ₂、a ₃、a’ ₃、a ₄、a’ ₄、a ₅、a’ ₅是入射电压波振幅，b ₁、b’ ₁、b ₂、b’ ₂、b ₃、b’ ₃、b ₄、b’ ₄、b ₅、b’ ₅是反射电压波振幅。值得一提的是，本申请实施例中的“输入端口”和“输出端口”均只是从天线单元10发射信号的角度进行命名。可以理解地，天线单元10还可以接收信号，此时，上述“输出端口”可以作为输入端口，上述“输入端口”则可以作为输出端口，即，本申请的“输入端口”和“输出端口”的命名并不对端口的属性构成限定。还需要指出的是，图2中长度为d ₁的传输线一侧还显示了具有特性阻抗Z ₀的传输线，但这两条传输线在实物上对应的是同一条导线；同样地，长度为d ₂的传输线、长度为d ₃的第一去耦传输线、长度为d ₄的第二去耦传输线和长度为d ₅的第三去耦传输线也应如此理解。特性阻抗Z ₃、特性阻抗Z ₄可设置成与特性阻抗Z ₀相等。 Both the first decoupling network 30 and the second decoupling network 30' are five-port networks. The first decoupling network 30 has input ports (a ₁ , b ₁ _{) connected to the feed source, output ports (a 2} , b ₂ ) connected to the antenna unit 10, and a first connection for connecting the second decoupling network 30 ′ Ports (a ₃ , b ₃ ), second connection ports (a ₄ , b ₄ ), and third connection ports (a ₅ , b ₅ ). Second decoupling network 30 'having an input port (a connector feeds' _{_1,} b' _1), an output port connected to the antenna unit (a 20 is the _{_'2,} b' ₂₎ and means for connecting the first decoupling network 30 a first connection port _{_{(a '3, b' 3}} ), a second connection port _{_{(a '4, b' 4}} ) , and a third connection port _{_{(a '5, b' 5}} ). Length d of the transmission line ₁ may form an output port (a _{_2,} b _2), and having a characteristic impedance Z _0; length of a transmission line d ₂ may form an output port _{_{(a '2, b' 2}} ), and having a characteristic impedance Z ₀ . 'The first connection port (a' length d ₃ of the first decoupling a first transmission line is connected to the connection port 30 is coupled to a first network (a _{_3,} b ₃₎ and the second decoupling network 30 _{_3,} b _'3 ), and has a characteristic impedance Z ₃ ; a second decoupling transmission line with a length of d ₄ is connected to the second connection port (a ₄ , b ₄ ) of the first decoupling network 30 and the second connection of the second decoupling network 30 ′ port _{_{(a '4, b' 4}} ), and having a characteristic impedance Z _4; d is the length of the third transmission line ₅ is coupled to a first decoupling network connected to the third connection port 30 (a _{_5,} b ₅₎ and a second decoupling network 30 'connected to a third port _{_{(a' 5, b '5}} ), and having a characteristic impedance Z _5. _{_{Further, a 1, a '1,}} a 2, a' 2, a 3, a '3, a 4, a' 4, a 5, a '5 is the incident voltage wave _{_{amplitude, b 1, b' 1,}} b _{_{_{2, b '2, b 3}}} , b' 3, b 4, b '4, b 5, b' 5 is reflected voltage wave amplitude. It is worth mentioning that the “input port” and “output port” in the embodiment of the present application are only named from the angle of the antenna unit 10 transmitting signals. It is understandable that the antenna unit 10 can also receive signals. In this case, the aforementioned "output port" can be used as an input port, and the aforementioned "input port" can be used as an output port, that is, the "input port" and "output port" in this application. The naming does not limit the attributes of the port. It should also be pointed out that the _{side of the transmission line with length d 1} in Fig. 2 also shows a transmission line with characteristic impedance Z ₀ , but these two transmission lines correspond to the same wire in physical objects; similarly, the length is d ₂ transmission line, a length d ₃ of the first transmission line decoupling, the length d of the transmission line and the second decoupling length d ₄ of the third transmission line ₅ decoupling should also be understood as such. The characteristic impedance Z ₃ and the characteristic impedance Z ₄ can be set equal to the characteristic impedance Z _0.

下文对图3和图4中天线单元10对应的第一去耦网络30的示例进行具体介绍。可以理解的是，天线单元20对应的第二去耦网络30’可以与天线单元10对应的第一去耦网络30相同。Hereinafter, examples of the first decoupling network 30 corresponding to the antenna unit 10 in FIGS. 3 and 4 will be specifically introduced. It can be understood that the second decoupling network 30' corresponding to the antenna unit 20 may be the same as the first decoupling network 30 corresponding to the antenna unit 10.

具体地，如图3和图4所示，第一去耦网络30可以包括相互连接的三端口网络31和四端口网络32，通过三端口网络31和四端口网络32级联实现去耦以及带宽展宽。值得一提的是，三端口网络31与四端口网络32分别通过一个端口进行连接，因而，三端口网络31和四端口网络32整体形成一个五端口网络。在一实施例中，三端口网络31与第三去耦传输线形成功分器，四端口网络32为定向耦合器。第二去耦网络30’也包括三端口网络31’和四端口网络32’。Specifically, as shown in FIGS. 3 and 4, the first decoupling network 30 may include a three-port network 31 and a four-port network 32 that are connected to each other. The three-port network 31 and the four-port network 32 are cascaded to achieve decoupling and bandwidth. Widen. It is worth mentioning that the three-port network 31 and the four-port network 32 are respectively connected through one port, and therefore, the three-port network 31 and the four-port network 32 form a five-port network as a whole. In one embodiment, the three-port network 31 and the third decoupling transmission line are splitter, and the four-port network 32 is a directional coupler. The second decoupling network 30' also includes a three-port network 31' and a four-port network 32'.

第一去耦网络30中的三端口网络31具有连接馈源的输入端口(a ₁,b ₁)、连接四端口网络32的输出端口(a ₆,b ₆)以及用于连接第二去耦网络30’中的三端口网络31’的去耦合端口(a ₅,b ₅)(即，第三连接端口)。第二去耦网络30’的三端口网络31’具有连接馈源的输入端口(a’ ₁,b’ ₁)、连接四端口网络32的输出端口(a’ ₆,b’ ₆)以及用于连接第一去耦网络30的去耦合端口(a’ ₅,b’ ₅)(即，上述第三连接端口)。其中，a ₆、a’ ₆是入射电压波振幅，b ₆、b’ ₆是反射电压波振幅。图3中长度为d’ ₁的传输线一侧还显示了具有特性阻抗Z’ ₀的传输线，但这两条传输线在实物上对应的是同一条传输线。类似地，长度为d’ ₂的传输线与一侧显示的具有特性阻抗Z’ ₀的传输线在实物上对应的也是同一条传输线。图4所示的三端口网络31具有第一传输线311和第二传输线312。其中，第一传输线311、第二传输线312的一端相互连接，并在连接处形成第一去耦网络30的第三连接端口，第一传输线311的另一端形成与第一馈源40连接的输入端口，第二传输线312的另一端形成与四端口网络32连接的输出端口。在此指出，文中所述的某一传输线的一端和另一端指的是该传输线的两个相对末端。 The three-port network 31 in the first decoupling network 30 has input ports (a ₁ , b ₁ _{) connected to the feed, output ports (a 6} , b ₆ ) connected to the four-port network 32, and connected to the second decoupling _{The decoupling ports (a 5} , b ₅ ) of the three-port network 31 ′ in the network 30 ′ (that is, the third connection port). Second decoupling network 30 'of the three-port network 31' having an input port _{_{(a '1, b' 1}} ) connected to the feed, an output port connected to four ports _{_{(a '6, b' 6}} ) for the network 32, and Connect the decoupling ports (a′ ₅ , b′ ₅ ) of the first decoupling network 30 (that is, the aforementioned third connection port). Wherein, a _{_6,} a _'6 is the incident voltage wave amplitude, b _{_6,} b' ₆ is reflected voltage wave amplitude. The transmission line with a length of d′ ₁ in Fig. 3 also shows a transmission line with a characteristic impedance Z′ ₀ , but the two transmission lines correspond to the same transmission line in physical objects. Similarly, the length of d 'and the transmission line side of the display ₂ having a characteristic impedance Z' in the transmission line ₀ is the same kind of a corresponding transmission line. The three-port network 31 shown in FIG. 4 has a first transmission line 311 and a second transmission line 312. Among them, one end of the first transmission line 311 and the second transmission line 312 are connected to each other, and the third connection port of the first decoupling network 30 is formed at the connection, and the other end of the first transmission line 311 forms an input connected to the first feed source 40 Port, the other end of the second transmission line 312 forms an output port connected to the four-port network 32. It is pointed out here that one end and the other end of a certain transmission line mentioned in the text refer to the two opposite ends of the transmission line.

三端口网络31’与上述三端口网络31相同。具体而言，三端口网络31’可以具有第一传输线311’和第二传输线312’。其中，第一传输线311’、第二传输线312’的一端相互连接，并在连接处形成第二去耦网络30’的去耦连接端口(即，第三连接端口)。第一传输线311’的另一端形成与第二馈源40’连接的输入端口，第二传输线312’的另一端形成与四端口网络32’连接的输出端口。其中，第一馈源40和第二馈源40’可以是同一个馈源。The three-port network 31' is the same as the aforementioned three-port network 31. Specifically, the three-port network 31' may have a first transmission line 311' and a second transmission line 312'. Wherein, one ends of the first transmission line 311' and the second transmission line 312' are connected to each other, and a decoupling connection port (that is, a third connection port) of the second decoupling network 30' is formed at the connection. The other end of the first transmission line 311' forms an input port connected to the second feed source 40', and the other end of the second transmission line 312' forms an output port connected to the four-port network 32'. Wherein, the first feed source 40 and the second feed source 40' may be the same feed source.

第三去耦传输线313的两端分别连接在三端口网络31和三端口网络31’的第三连接端口上。Two ends of the third decoupling transmission line 313 are respectively connected to the third connection ports of the three-port network 31 and the three-port network 31'.

本申请中的术语“第一”、“第二”、“第三”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”、“第三”的特征可以明示或者隐含地包括至少一个该特征。The terms "first", "second", and "third" in this application are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined with “first”, “second”, and “third” may explicitly or implicitly include at least one of the features.

其中，两个天线单元10、20之间在第一频段的耦合度可以通过三端口网络31的散射参数(即，S参数)和第三去耦传输线313的长度来进行确定。例如，要求两个天线单元10、20之间在第一频段的耦合度达到预设耦合度D ₀，则，可以将三端口网络31的S参数和第三去耦传输线313的长度配置为使天线单元10、20之间在第一频段的耦合度满足预设耦合度D ₀。 The degree of coupling between the two

antenna units

10 and 20 in the first frequency band can be determined by the scattering parameter (ie, S parameter) of the three-port network 31 and the length of the third decoupling transmission line 313. For example, if the coupling degree between the two

antenna units

10 and 20 in the first frequency band is required to reach the preset coupling degree D ₀ , the S parameter of the three-port network 31 and the length of the third decoupling transmission line 313 can be configured to The coupling degree between the

antenna units

10 and 20 in the first frequency band satisfies the preset coupling degree D ₀ .

容易明白的是，当第一去耦网络30和第二去耦网络30’采用相同的结构时，他们当中的三端口网络31和31’的S参数也是相同的。从而，在第一去耦网络30和第二去耦网络30’相同的情况下，两个天线单元10、20之间在第一频段的耦合度与三端口网络31的S参数以及第三去耦传输线313的长度之间的关系可以通过以下方式获得：It is easy to understand that when the first decoupling network 30 and the second decoupling network 30' adopt the same structure, the S parameters of the three-port networks 31 and 31' among them are also the same. Therefore, when the first decoupling network 30 and the second decoupling network 30' are the same, the degree of coupling between the two antenna units 10 and 20 in the first frequency band is the same as the S parameter of the three-port network 31 and the third decoupling network. The relationship between the lengths of the coupling transmission line 313 can be obtained in the following manner:

三端口网络31或31’的[S]矩阵为：The [S] matrix of the three-port network 31 or 31’ is:

其中，S ₁₁、S ₆₆、S ₅₅是三端口网络单独存在时的三个端口的反射系数；S ₁₆是输入端口直馈到输出端口的功率；S ₁₅是从输入端口馈到第三连接端口的功率；S ₆₅是从去耦合端口馈到输出端口的功率。 Among them, S ₁₁ , S ₆₆ , S ₅₅ are the reflection coefficients of the three ports when the three-port network exists alone; S ₁₆ is the power directly fed from the input port to the output port; S ₁₅ is the power fed from the input port to the third connection port S ₆₅ is the power fed from the decoupling port to the output port.

可将S ₁₁、S ₆₆、S ₅₅和S ₆₅设计为0，使该S参数矩阵为： S ₁₁ , S ₆₆ , S ₅₅ and S _{65 can be} designed as 0, so that the S parameter matrix is:

在图3中的参考面Ⅲ处，三端口网络31的第三连接端口连接了长度为d ₅的第三去耦传输线，第一去耦网络30中的三端口网络31和第二去耦网络30’中的三端口网络31’组成的六端口网络的S参数关系式为： Ⅲ the reference surface in FIG. 3, a third three-port network 31 is connected to port d is connected to a third decoupling length of the transmission line _5, a first decoupling network 30 to network 31 and a second three-port decoupling network The S parameter relational expression of the six-port network composed of the three-port network 31' in 30' is:

其中，k为波数，e为自然常数，j为虚数的表示符号。Among them, k is the wave number, e is the natural constant, and j is the sign of the imaginary number.

将式(3)中的矩阵写成分块矩阵形式：Write the matrix in formula (3) into block matrix form:

将式(5)改写成方程组形式：Rewrite formula (5) into the form of equations:

将式(4)简写为：The formula (4) is abbreviated as:

[a ₆]＝[Γ]·[b ₆] (7) [a ₆ ]=[Γ]·[b ₆ ] (7)

将式(7)代入式(6)可得：Substituting formula (7) into formula (6), we can get:

由式(8)中第②式可得：From the formula ② in formula (8), we can get:

[b ₆]＝{E-[S ₆₆][Γ]} ^-1[S ₆₁][a ₁] (9) [b ₆ ]={E-[S ₆₆ ][Γ]} ^-1 [S ₆₁ ][a ₁ ] (9)

其中，E代表单位矩阵。Among them, E represents the identity matrix.

将式(9)代入式(8)中第①式可得：Substituting formula (9) into formula (8), formula ① can be obtained:

[b ₁]＝[S ₁₁][a ₁]+[S ₁₆][Γ]{E-[S ₆₆][Γ]} ^-1[S ₆₁][a ₁] (10) [b ₁ ]=[S ₁₁ ][a ₁ ]+[S ₁₆ ][Γ]{E-[S ₆₆ ][Γ]} ^-1 [S ₆₁ ][a ₁ ] (10)

由式(10)可知，两个三端口网络31和31’之间通过第三去耦传输线313连接后形成的四端口网络(1、6、1’、6’)的S参数矩阵为：It can be seen from equation (10) that the S parameter matrix of the four-port network (1, 6, 1', 6') formed after the two three-port networks 31 and 31' are connected by the third decoupling transmission line 313 is:

S _Four-port＝[S ₁₁]+[S ₁₆][Γ]{E-[S ₆₆][Γ]} ^-1[S ₆₁] (11) S _Four-port = [S ₁₁ ]+[S ₁₆ ][Γ]{E-[S ₆₆ ][Γ]} ^-1 [S ₆₁ ] (11)

在此指出，这里的四端口网络的四个端口是指三端口网络31和三端口网络31’连接后，组成的整体对外的四个端口(a ₁,b ₁)、(a ₆,b ₆)、(a’ ₁,b’ ₁)和(a’ ₆,b’ ₆)。 It is pointed out here that the four ports of the four-port network here refer to the four external ports (a ₁ , b ₁ ), (a ₆ , b _{6) formed by connecting the three-port network 31 and the three-port network 31'.} ), (a' ₁ ,b' ₁ ) and (a' ₆ ,b' ₆ ).

将式(3)和式(5)所规划的分块矩阵代入式(11),即可得到该四端口网络的新的S参数矩阵为：Substituting the block matrix planned by equation (3) and equation (5) into equation (11), the new S-parameter matrix of the four-port network can be obtained as:

将该四端口网络的端口顺序调整为1→1′→6→6′，则式(12)变为：Adjust the port sequence of the four-port network to 1→1′→6→6′, then the formula (12) becomes:

将式(13)改写成分块矩阵的形式：Rewrite formula (13) into the form of a block matrix:

设该两个天线单元形成的二元天线阵的S参数矩阵为：Suppose the S parameter matrix of the binary antenna array formed by the two antenna elements is:

其中，S’ ₁₂为二元天线在第一频段初始隔离度的强度，即，两个相邻的天线单元10和20之间未连接去耦网络时在第一频段的隔离度的强度；S’ ₁₁、S’ ₂₁和S’ ₂₂分别为两个相邻的天线单元10和20之间未连接去耦网络时的输入反射系数、正向传输系数(增益)和输出反射系数。 Wherein, S _'12 is a binary intensity initial antenna isolation the first frequency band, i.e., two adjacent antenna unit is not in the first frequency band strength when the isolation between the

decoupling network connection

10 and 20; S _'11, S' ₂₁ and S _'22, respectively two adjacent antenna input reflection coefficient when the unit is not decoupling network connection between 10 and 20, the forward transmission coefficient (gain) and output reflection coefficients.

两个三端口网络31和31’之间通过第三去耦传输线连接在一起后，形成的四端口网络再分别与两个四端口网络32和32’连接后，组建成一个二端口(1、1’)网络。该二端口网络的S参数矩阵为:After the two three-port networks 31 and 31' are connected together by a third decoupling transmission line, the formed four-port network is then connected to the two four-port networks 32 and 32' respectively, and a two-port (1, 1') Network. The S parameter matrix of the two-port network is:

[S]＝[S ₁₁]+[S ₁₆][S _array]{E-[S ₆₆][S _array]} ^-1[S ₆₁] (16) [S]=[S ₁₁ ]+[S ₁₆ ][S _array ]{E-[S ₆₆ ][S _array ]} ^-1 [S ₆₁ ] (16)

在此指出，这里的二端口网络的两个端口是指三端口网络31和三端口网络31’之间连接后、且输出端口(a ₆,b ₆)和(a’ ₆,b’ ₆)分别连接四端口网络32和32’之后，剩下的两个用于与馈源连接的端口(a ₁,b ₁) 和(a’ ₁,b’ ₁)。 It is pointed out here that the two ports of the two-port network here refer to the connection between the three-port network 31 and the three-port network 31', and the output ports (a ₆ ,b ₆ ) and (a' ₆ ,b' ₆ ) four-port networks are connected to 32 and 32 ', the remaining two ports for connecting the feed (a _{_1,} b ₁₎ and _{_{(a' 1, b '1}} ).

将式(13)与式(14)所定义的分块矩阵代入式(16)，可得：Substituting the block matrix defined by equation (13) and equation (14) into equation (16), we can get:

由式(17)可知，

It can be seen from formula (17) that

其中，该耦合度是指在第一频段的耦合度。S′ ₁₂为初始隔离度的强度，即，两个相邻的天线单元10和20之间未连接去耦网络时的隔离度的强度。 Wherein, the degree of coupling refers to the degree of coupling in the first frequency band. S′ ₁₂ is the strength of the initial isolation, that is, the strength of the isolation when the decoupling network is not connected between two

adjacent antenna units

10 and 20.

由此可知，通过设计第三去耦传输线313的长度d ₅，以及三端口网络的S参数，即可精确定义天线单元10和20之间在第一频段的耦合度。也即，当预设好所需的耦合度后，上式可表示为：

It can be seen that by designing the length d _{5 of the} third decoupling transmission line 313 and the S parameter of the three-port network, the degree of coupling between the antenna units 10 and 20 in the first frequency band can be precisely defined. That is, when the required degree of coupling is preset, the above formula can be expressed as:

因此，可以将第三去耦传输线313的长度d ₅和三端口网络31的S参数配置为使天线单元10、20之间在第一频段的耦合度满足预设耦合度。 Thus, the length of the third transmission line 313 is coupled to the parameter d S ₅ may be a 3-port 31 and is disposed between the

antenna elements

10 and 20 such that the degree of coupling satisfies a predetermined first frequency band in the degree of coupling.

在一些实施例中，三端口网络31与第三去耦传输线形成功分器，因而，可以通过配置第三去耦传输线313的长度和功分器的功分比来使两个天线单元10和20之间在第一频段的耦合度置零。In some embodiments, the three-port network 31 and the third decoupling transmission line form a successful splitter. Therefore, the length of the third decoupling transmission line 313 and the power splitting ratio of the power splitter can be configured to make the two antenna units 10 and The coupling degree between 20 in the first frequency band is set to zero.

第三去耦传输线313的长度和功分器的功分比可以由两个天线单元10、20之间的初始隔离度来确定，其中，初始隔离度为两个天线单元10、20之间未连接去耦网络时的隔离度。即，一些实施例中，两个天线单元10、20之间的初始隔离度可以配置为使两个天线单元10、20之间在第一频段的耦合度置零。The length of the third decoupling transmission line 313 and the power division ratio of the power divider can be determined by the initial isolation between the two

antenna units

10 and 20, where the initial isolation is the difference between the two

antenna units

10 and 20. Isolation when connecting to a decoupling network. That is, in some embodiments, the initial isolation between the two

antenna units

10 and 20 may be configured to zero the coupling between the two

antenna units

10 and 20 in the first frequency band.

具体地，功分器的功分比的可以通过两个天线单元10、20之间的初始隔离度的强度(即S ₁₂’)来确定。第三去耦传输线313的长度则可以通过两个天线单元10、20之间的初始隔离度的相位(φ' ₁₂)来确定。 Specifically, the power division ratio of the power divider can be determined by the strength of the initial isolation between the two antenna units 10 and 20 (ie S ₁₂ ′). The length of the third decoupling transmission line 313 can be determined by the phase (φ′ ₁₂ ) of the initial isolation between the two

antenna elements

10 and 20.

举例而言，当需要去耦网络将两个天线单元10、20之间在第一频段的互耦完全抵消时，令预设耦合度为0，则For example, when a decoupling network is required to completely cancel the mutual coupling between the two

antenna units

10 and 20 in the first frequency band, the preset coupling degree is set to 0, then

由式(18)可知：From equation (18), we can see:

由式(19)可知，若令

且φ ₁₆＝φ ₁₅，则 From equation (19), we can see that if

And φ ₁₆ =φ ₁₅ , then

其中，

为功分器的功分比，因此，三端口网络的S参数可以根据功分比确定。 in,

It is the power division ratio of the power divider, therefore, the S parameter of the three-port network can be determined according to the power division ratio.

由此可知，将功分器的功分比配置为与两个天线单元10、20的初始隔离度的强度之间满足式(21)的关系，并将三端口网络31的第三去耦传输线313的长度配置为与两个天线单元10、20的初始隔离度的相位之间满足式(21)的关系，则可实现两个天线单元10、20之间的耦合度置零。It can be seen that the power division ratio of the power divider is configured to satisfy the relationship of formula (21) with the initial isolation strength of the two

antenna units

10 and 20, and the third decoupling transmission line of the three-port network 31 The length of 313 is configured to satisfy the relationship of formula (21) with the phase of the initial isolation of the two

antenna units

10 and 20, so that the coupling degree between the two

antenna units

10 and 20 can be set to zero.

具体地，初始隔离度的强度|S' ₁₂|和相位φ' ₁₂是已知的，波数k与波长λ的关系也是已知的，因此，用波长λ表示波数k，并代入式(21)，可得出d的计算公式： Specifically, the intensity of the initial isolation | S _'12 | and phase φ' ₁₂ are known, the wave number k versus wavelength λ and are also known, and therefore, wavelength λ represents the wavenumber k, and substituted into the formula (21) , The calculation formula of d can be obtained:

因此，计算出功分器的功分比以及第三去耦传输线313的长度d ₅之后，从而设计出具有该功分比的三端口网络31和具有该长度的第三去耦传输线313，以实现在第一频段的耦合度置零。 Thus, after the calculation of the power splitter power divider ratio and the length d ₅ of the third decoupling the transmission line 313, thus designed with this feature in three-port network than 31, and a third decoupling the transmission line having the length of 313 to The coupling degree in the first frequency band is set to zero.

在一些实施例中，功分器的功分比与第一传输线311、第二传输线312和第三去耦传输线313的特性阻抗相关。由上述实施例可知，功分器的功分比可以根据初始隔离度的强度获知，因而，可以由此获知的功分比以及第一传输线311的特性阻抗来确定第二传输线312和第三去耦传输线313的特性阻抗。因此，第二传输线312和第三去耦传输线313的特性阻抗均可根据第一传输线31的特性阻抗和初始隔离度的强度来确定。In some embodiments, the power division ratio of the power divider is related to the characteristic impedance of the first transmission line 311, the second transmission line 312, and the third decoupling transmission line 313. It can be seen from the above embodiment that the power division ratio of the power divider can be obtained according to the strength of the initial isolation. Therefore, the obtained power division ratio and the characteristic impedance of the first transmission line 311 can be used to determine the second transmission line 312 and the third transmission line. Couple the characteristic impedance of the transmission line 313. Therefore, the characteristic impedance of the second transmission line 312 and the third decoupling transmission line 313 can be determined according to the characteristic impedance of the first transmission line 31 and the strength of the initial isolation.

以功分器为图4所示的T形结功分器作为示例，第二传输线312的特性阻抗Z’ ₀与第一传输线311的特性阻抗Z ₆以及功分比(初始隔离度的强度S’ ₁₂)满足以下关系： In FIG power splitter is T-shaped junction power divider shown in FIG. 4 as an example, the second transmission line 312 characteristic impedance Z _'0 of the first characteristic impedance of the transmission line 311 and a power divider Z ₆ specific strength (initial isolation S _'12 ) Satisfy the following relationship:

Z’ ₀＝(1+|S’ ₁₂|)ⅹZ ₆ (23) _{Z '0 = (1+ | S} ' 12 |) ⅹZ 6 (23)

第三去耦传输线313的特性阻抗Z ₅与第一传输线311的特性阻抗Z ₆以及功分比(即初始隔离度的强度S’ ₁₂)满足以下关系： Characteristics of the third transmission line 313 is coupled to impedance Z ₅ and the first transmission line 311 and the characteristic impedance Z ₆ power divider ratio (i.e., the intensity of the initial isolation of S _'12) satisfy the following relation:

因此，由上述可知，通过预设耦合度可以获知所要求的功分器的功分比，然后可以根据该功分比可以获知所需要的第二传输线312的特性阻抗Z’ ₀和第三去耦传输线313的特性阻抗Z ₅，从而配置三端口网络31的第二传输线312和第三去耦传输线313，使得第二传输线312的特性阻抗满足所需要的特性阻抗Z’ ₀，并使第三去耦传输线313的特性阻抗满足所需要的特性阻抗Z ₅。 Thus, from the above, the degree of coupling can be known through a preset desired power divider ratio of the power divider, then dividing ratio may be learned characteristic of the second transmission line 312 to the desired impedance Z _'0, and the third according to the function 313 coupled to the transmission line characteristic impedance Z _5, thereby configuring the second three-port network 31 transmission line 312 and transmission line 313 is coupled to the third, so that the characteristic impedance of the second transmission line 312 to meet the desired characteristic impedance Z _'0, and a third The characteristic impedance of the decoupling transmission line 313 meets the required characteristic impedance Z ₅ .

一些实施例中，可以通过配置传输线的线宽来使传输线的特性阻抗满足要求，即，第二传输线312的线宽根据第二传输线312的特性阻抗来确定。第三去耦合传输线313的线宽根据第三去耦传输线313的特性阻抗来确定。例如，按照上述关系式获得第二传输线312的特性阻抗Z’ ₀之后，可以将第二传输线312的线宽配置为使其特性阻抗满足上述特性阻抗Z’ ₀。举例而言，确定所需的第二传输线312的厚度、PCB板材的相对介电常数以及介质层厚度等因素后，根据特性阻抗和线宽之间的关系以及所需的特性阻抗Z’ ₀，即可计算出第二传输线312的线宽。因此，根据该计算结果来配置第二传输线312的线宽，从而获得具有上述特性阻抗Z’ ₀的第二传输线312。 In some embodiments, the characteristic impedance of the transmission line can be configured to meet the requirements by configuring the line width of the transmission line, that is, the line width of the second transmission line 312 is determined according to the characteristic impedance of the second transmission line 312. The line width of the third decoupling transmission line 313 is determined according to the characteristic impedance of the third decoupling transmission line 313. _{For example, after obtaining the characteristic impedance Z′ 0 of the} second transmission line 312 according to the above-mentioned relational expression, the line width of the second transmission line 312 can be configured such that its characteristic impedance satisfies the above-mentioned characteristic impedance Z′ ₀ . After For example, the factors determining the thickness, relative dielectric constant and the dielectric layer of PCB material thickness required for the second transmission line 312, the relationship between the characteristic impedance and the line width and the desired characteristic impedance Z _'0, Then the line width of the second transmission line 312 can be calculated. Therefore, the line width of the second transmission line 312 is configured according to the calculation result, thereby obtaining the second transmission line 312 having the above-mentioned characteristic impedance Z′ ₀ .

类似地，可以通过配置第三去耦传输线313的线宽来使第三去耦传输线313满足上述所需的特性阻抗Z ₅。第三去耦传输线313的线宽则可以根据特性阻抗和线宽之间的关系以及所需的特性阻抗Z ₅来计算。因此，根据该计算结果来配置第三去耦传输线313的线宽，从而获得具有上述特性阻抗Z5的第三去耦传输线313。 Similarly, the line width of the third decoupling transmission line 313 can be configured to make the third decoupling transmission line 313 meet the aforementioned required characteristic impedance Z ₅ . The line width of the third decoupling transmission line 313 can be calculated according to the relationship between the characteristic impedance and the line width and the required characteristic impedance Z ₅ . Therefore, the line width of the third decoupling transmission line 313 is configured according to the calculation result, thereby obtaining the third decoupling transmission line 313 having the above-mentioned characteristic impedance Z5.

可以理解地，上述功分器还可以是其他功分器，例如，wilkinson功分器。此时，第二传输线312的特性阻抗Z’ ₀和第一去耦传输线313的特性阻抗Z ₅则可以根据wilkinson功分器所对应的关系式来进行计算。 Understandably, the above-mentioned power divider may also be other power dividers, for example, a Wilkinson power divider. At this time, the characteristic impedance Z′ _{0 of the} second transmission line 312 and the characteristic impedance Z _{5 of} the first decoupling transmission line 313 can be calculated according to the relational expression corresponding to the Wilkinson power divider.

第一去耦网络30的四端口网络32与第二去耦网络30’的四端口网络32’之间通过第一去耦传输线33和第二去耦传输线34连接。The four-port network 32 of the first decoupling network 30 and the four-port network 32' of the second decoupling network 30' are connected by a first decoupling transmission line 33 and a second decoupling transmission line 34.

如图3所示，第一去耦网络30的四端口网络32具有连接三端口网络31的输入端口(a ₇,b ₇)、连接天线单元10的输出端口(a ₂,b ₂)以及用于连接第二去耦网络30’的第一连接端口(a ₃,b ₃)和第二连接端口(a ₄,b ₄)。第二去耦网络30’的四端口网络32’具有连接三端口网络31’的输入端口(a’ ₇,b’ ₇)、连接天线单元20的输出端口(a’ ₂,b’ ₂)以及用于连接第一去耦网络31的第一连接端口(a’ ₃,b’ ₃)和第二连接端口(a’ ₄,b’ ₄)。其中，a ₇、a’ ₇是入射电压波振幅，b ₇、b’ ₇是反射电压波振幅。 As shown in FIG. 3, the four-port network 32 of the first decoupling network 30 has input ports (a ₇ , b ₇ _{) connected to the three-port network 31, output ports (a 2} , b ₂ ) connected to the antenna unit 10, and It is connected to the first connection port (a ₃ , b ₃ ) and the second connection port (a ₄ , b ₄ ) of the second decoupling network 30 ′. 'Input port (a' second decoupling network 30 'of the four-port network 32' having a 3-port connector 31 _{_7,} b _'7), an output port connected to the antenna unit (a 20 a' _{_2,} b _'2) and _{The first connection port (a′ 3} , b′ ₃ ) and the second connection port (a′ ₄ , b′ ₄ ) of the first decoupling network 31 are connected. Wherein, a _{_7,} a _'7 is the incident voltage wave amplitude, b _{_7,} b' ₇ is reflected voltage wave amplitude.

结合图3、图4和图5，四端口网络32可包括定向耦合器主体320和连接在该定向耦合器主体320上的四条传输线。这四条传输线包括第二传输线322(其与三端口网络31的第二传输线312为同一根传输线)、第三传输线323、第四传输线324和第五传输线325。值得一提的是，第二传输线322远离定向耦合器主体320的一端形成四端口网络32的输入端口(a ₇,b ₇)，远离三端口网络31的一端形成三端口网络31的输出端口(a ₆,b ₆)。第三传输线323的一端连接定向耦合器主体320，另一端形成输出端口(a ₂,b ₂)。第四传输线324的一端连接所述定向耦合器主体320，另一端形成所述第一连接端口(a ₃,b ₃)；所述第五传输线325的一端连接所述定向耦合器主体320，另一端形成所述第二连接端口(a ₄,b ₄)。第二去耦网络30’中的四端口网络32’与四端口网络32具有相同的结构。 With reference to FIGS. 3, 4 and 5, the four-port network 32 may include a directional coupler main body 320 and four transmission lines connected to the directional coupler main body 320. The four transmission lines include a second transmission line 322 (which is the same transmission line as the second transmission line 312 of the three-port network 31), a third transmission line 323, a fourth transmission line 324, and a fifth transmission line 325. It is worth mentioning that the end of the second transmission line 322 away from the directional coupler body 320 forms the input port (a ₇ , b ₇ ) of the four-port network 32, and the end away from the three-port network 31 forms the output port ( a ₆ ,b ₆ ). One end of the third transmission line 323 is connected to the directional coupler body 320, and the other end forms an output port (a ₂ , b ₂ ). One end of the fourth transmission line 324 is connected to the directional coupler main body 320, the other end forms the first connection port (a ₃ , b ₃ ); one end of the fifth transmission line 325 is connected to the directional coupler main body 320, and the other end forms the first connection port (a 3, b 3 ). One end forms the second connection port (a ₄ , b ₄ ). The four-port network 32' in the second decoupling network 30' has the same structure as the four-port network 32.

定向耦合器主体320可包括第六传输线326、第七传输线327、第八传输线328和第九传输线329。该第六传输线326、第七传输线327、第八传输线328和第九传输线329首尾顺次连接，以形成一回路，围成一方形。The directional coupler body 320 may include a sixth transmission line 326, a seventh transmission line 327, an eighth transmission line 328, and a ninth transmission line 329. The sixth transmission line 326, the seventh transmission line 327, the eighth transmission line 328, and the ninth transmission line 329 are sequentially connected end to end to form a loop and form a square.

其中，第二传输线322的第一端与第六传输线326的第一端连接，第二传输线322的第二端形成与三端口网络31连接的输入端口。第三传输线323的第一端与第六传输线326的第二端连接，第三传输线323的第二端形成与天线单元10连接的输出端口。第四传输线324的第一端与第八传输线328的第一端连接，第四传输线324的第二端形成与第一去耦传输线33的第一端连接的第一连接端口。第五传输线325的第一端与第八传输线328的第二端连接，第五传输线325的第二端形成与第二去耦传输线34的第一端连接的第二连接端口。The first end of the second transmission line 322 is connected to the first end of the sixth transmission line 326, and the second end of the second transmission line 322 forms an input port connected to the three-port network 31. The first end of the third transmission line 323 is connected to the second end of the sixth transmission line 326, and the second end of the third transmission line 323 forms an output port connected to the antenna unit 10. The first end of the fourth transmission line 324 is connected to the first end of the eighth transmission line 328, and the second end of the fourth transmission line 324 forms a first connection port connected to the first end of the first decoupling transmission line 33. The first end of the fifth transmission line 325 is connected to the second end of the eighth transmission line 328, and the second end of the fifth transmission line 325 forms a second connection port connected to the first end of the second decoupling transmission line 34.

第四传输线324和第五传输线325可设计成具有较短长度，例如，第四传输线324和第五传输线325的长度仅能与第一去耦传输线33和第二去耦传输线34连接即可，而不再具有冗余长度。这可降低对第一去耦传输线33和第二去耦传输线34的长度设计的影响。The fourth transmission line 324 and the fifth transmission line 325 can be designed to have a shorter length. For example, the length of the fourth transmission line 324 and the fifth transmission line 325 can only be connected to the first decoupling transmission line 33 and the second decoupling transmission line 34. There is no longer a redundant length. This can reduce the influence on the length design of the first decoupling transmission line 33 and the second decoupling transmission line 34.

第六传输线326和第八传输线328的特性阻抗可设计为Z ₁，第七传输线327和第九传输线329的特性阻抗可设计为Z ₂。另外，第六传输线326、第七传输线327、第八传输线328和第九传输线329的长度均可设置为(1/4)λ，其中λ为波长。 The characteristic impedance of the sixth transmission line 326 and the eighth transmission line 328 may be designed as Z ₁ , and the characteristic impedance of the seventh transmission line 327 and the ninth transmission line 329 may be designed as Z ₂ . In addition, the lengths of the sixth transmission line 326, the seventh transmission line 327, the eighth transmission line 328, and the ninth transmission line 329 can all be set to (1/4)λ, where λ is the wavelength.

如图6所示，天线单元20对应的第二去耦网络30’中的四端口网络32’可以与上述的第一去耦网络30中的四端口网络32相同。在一实施例中，该四端口网络为定向耦合器，其可包括定向耦合器主体320’和从该定向耦合器主体320’伸出的四条传输线。这四条传输线包括第二传输线322’(其与三端口网络31的第二传输线312’为同一根传输线)、第三传输线323’、第四传输线324’和第五传输线325’。As shown in FIG. 6, the four-port network 32' in the second decoupling network 30' corresponding to the antenna unit 20 may be the same as the four-port network 32 in the first decoupling network 30 described above. In an embodiment, the four-port network is a directional coupler, which may include a directional coupler main body 320' and four transmission lines extending from the directional coupler main body 320'. The four transmission lines include a second transmission line 322' (which is the same transmission line as the second transmission line 312' of the three-port network 31), a third transmission line 323', a fourth transmission line 324', and a fifth transmission line 325'.

该定向耦合器主体310’可包括第六传输线326’、第七传输线327’、第八传输线328’和第九传输线329’。该第六传输线326’、第七传输线327’、第八传输线328’和第九传输线329’首尾顺次连接，以形成一回路，围成一方形。The directional coupler body 310' may include a sixth transmission line 326', a seventh transmission line 327', an eighth transmission line 328', and a ninth transmission line 329'. The sixth transmission line 326', the seventh transmission line 327', the eighth transmission line 328', and the ninth transmission line 329' are connected in sequence from end to end to form a loop and form a square.

其中，第二传输线322’的第一端与第六传输线326’的第一端连接，第二传输线322’的第二端形成与三端口网络31’连接的输入端口。第三传输线323’的第一端与第六传输线326’的第二端连接，第三传输线323’的第二端形成与天线单元20连接的输出端口。第四传输线324’的第一端与第八传输线328’的第一端连接，第四传输线324’的第二端形成与第一去耦传输线33的第二端连接的第一连接端口。第五传输线325’的第一端与第八传输线328’的第二端连接，第五传输线325’的第二端形成与第二去耦传输线34的第二端连接的第二连接端口。The first end of the second transmission line 322' is connected to the first end of the sixth transmission line 326', and the second end of the second transmission line 322' forms an input port connected to the three-port network 31'. The first end of the third transmission line 323' is connected to the second end of the sixth transmission line 326', and the second end of the third transmission line 323' forms an output port connected to the antenna unit 20. The first end of the fourth transmission line 324' is connected to the first end of the eighth transmission line 328', and the second end of the fourth transmission line 324' forms a first connection port connected to the second end of the first decoupling transmission line 33. The first end of the fifth transmission line 325' is connected to the second end of the eighth transmission line 328', and the second end of the fifth transmission line 325' forms a second connection port connected to the second end of the second decoupling transmission line 34.

第四传输线324’和第五传输线325’可设计成具有较短长度，例如，第四传输线324’和第五传输线325’的长度仅能与第一去耦传输线33和第二去耦传输线34连接即可，而不再具有冗余长度。这可降低对第一去耦传输线33和第二去耦传输线34的长度设计的影响。The fourth transmission line 324' and the fifth transmission line 325' can be designed to have a shorter length. For example, the length of the fourth transmission line 324' and the fifth transmission line 325' can only be the same as the first decoupling transmission line 33 and the second decoupling transmission line 34. Just connect, and no longer have redundant length. This can reduce the influence on the length design of the first decoupling transmission line 33 and the second decoupling transmission line 34.

第六传输线326’和第八传输线328’的特性阻抗可设计为Z ₁，第七传输线327’和第九传输线329’的特性阻抗可设计为Z ₂。另外，第六传输线326’、第七传输线327’、第八传输线328’和第九传输线329’的长度均可设置为(1/4)λ。 The characteristic impedance of the sixth transmission line 326 ′ and the eighth transmission line 328 ′ may be designed as Z ₁ , and the characteristic impedance of the seventh transmission line 327 ′ and the ninth transmission line 329 ′ may be designed as Z ₂ . In addition, the lengths of the sixth transmission line 326', the seventh transmission line 327', the eighth transmission line 328', and the ninth transmission line 329' can all be set to (1/4)λ.

再结合图4所示，第一去耦传输线33的第一端连接第一去耦网络30的第一连接端口，也就是连接第四传输线324的第二端；第一去耦传输线33的第二端连接第二去耦网络30’的第一连接端口，也就是连接第四传输线324’的第二端。类似地，第二去耦传输线34的第一端连接第一去耦网络30的第二连接端口，也就是连接第五传输线325的第二端；第二去耦传输线34的第二端连接第二去耦网络30’的第二连接端口，也就是连接第五传输线325’的第二端。As shown in FIG. 4 again, the first end of the first decoupling transmission line 33 is connected to the first connection port of the first decoupling network 30, that is, to the second end of the fourth transmission line 324; the first end of the first decoupling transmission line 33 The two ends are connected to the first connection port of the second decoupling network 30', that is, to the second end of the fourth transmission line 324'. Similarly, the first end of the second decoupling transmission line 34 is connected to the second connection port of the first decoupling network 30, that is, to the second end of the fifth transmission line 325; the second end of the second decoupling transmission line 34 is connected to the second connection port of the fifth transmission line 325; The second connection port of the second decoupling network 30' is connected to the second end of the fifth transmission line 325'.

在图4至图6中，第二传输线322、第三传输线323、第四传输线324、第五传输线325、第二传输线322’、第三传输线323’、第四传输线324’、第五传输线325’、第一去耦传输线33和第二去耦传输线34的特性阻抗可设计为Z ₀。其中，在将上述三端口网络Z’ ₀计算出来之后，可以将Z ₀配置为与Z’ ₀相等。另外，第一去耦传输线33的长度可设为d3，第二去耦传输线34的长度可设为d ₄。 In FIGS. 4 to 6, the second transmission line 322, the third transmission line 323, the fourth transmission line 324, the fifth transmission line 325, the second transmission line 322', the third transmission line 323', the fourth transmission line 324', and the fifth transmission line 325 The characteristic impedance of the first decoupling transmission line 33 and the second decoupling transmission line 34 can be designed as Z ₀ . Wherein, in the above-described three-port network Z 'calculated after _0, ₀ may be configured to the Z Z' is equal to _0. In addition, the length of the first decoupling transmission line 33 can be set to d3, and the length of the second decoupling transmission line 34 can be set to d ₄ .

第一去耦传输线33和第二去耦传输线34用于传输信号以抵消两个天线单元10、20之间的在第二频段的互耦。其中，第一频段和第二频段不同，且相互邻近。两个天线单元10、20之间在第二频段的的耦合度D1可以通过第一去耦网络30的四端口网络32和第二去耦网络30’的四端口网络32’的散射参数(即，S参数)以及第一去耦传输线33与第二去耦传输线34的长度d ₃和d ₄来进行定义。例如，如果要求两个天线单元10、20之间的耦合度D1达到预设耦合度，则可以将四端口网络32的S参数和第一去耦传输线33与第二去耦传输线34的长度d ₃，d ₄配置为使天线单元10、20之间在第二频段的的耦合度D1满足预设的耦合度。在此指出，两个天线单元10、20之间在第二频段的的耦合度D1与两个天线单元10、20之间在第二频段的的隔离度成反比关系；也就是说，两个天线单元10、20之间在第二频段的的隔离度越高，则两个天线单元10、20之间在第二频段的的耦合度D1越低。 The first decoupling transmission line 33 and the second decoupling transmission line 34 are used to transmit signals to cancel the mutual coupling between the two

antenna units

10 and 20 in the second frequency band. Among them, the first frequency band and the second frequency band are different and adjacent to each other. The degree of coupling D1 between the two

antenna units

10 and 20 in the second frequency band can be determined by the scattering parameters of the four-port network 32 of the first decoupling network 30 and the four-port network 32' of the second decoupling network 30' (ie , S-parameters), and a first decoupling transmission line 33 to define the length of the transmission line 34 of the second decoupling and d ₃ of d _4. For example, if the coupling degree D1 between the two

antenna units

10 and 20 is required to reach the preset coupling degree, the S parameter of the four-port network 32 and the length d of the first decoupling transmission line 33 and the second decoupling transmission line 34 can be combined. _3, d ₄ arranged such that the degree of coupling between the antenna elements of the second frequency band between 10,20 D1 satisfies the preset degree of coupling. It is pointed out here that the coupling degree D1 between the two

antenna elements

10 and 20 in the second frequency band is inversely proportional to the isolation degree between the two

antenna elements

10 and 20 in the second frequency band; that is, two The higher the isolation between the

antenna units

10 and 20 in the second frequency band, the lower the coupling degree D1 between the two

antenna units

10 and 20 in the second frequency band.

容易明白的是，当四端口网络32和四端口网络32’采用相同的结构时，他们的S参数也是相同的。从而，在四端口网络32和四端口网络32’相同的情况下，两个天线单元10、20之间在第二频段的的耦合度D1与四端口网络32的S参数以及第一去耦传输线33与第二去耦传输线34的长度d ₃，d ₄之间的关系可以通过以下方式获得。 It is easy to understand that when the four-port network 32 and the four-port network 32' adopt the same structure, their S parameters are also the same. Therefore, when the four-port network 32 and the four-port network 32' are the same, the coupling degree D1 between the two

antenna units

10 and 20 in the second frequency band is the same as the S-parameter of the four-port network 32 and the first decoupling transmission line. _{The relationship between the lengths d 3} and d _{4 of the} second

decoupling transmission line

34 and 33 can be obtained in the following manner.

四端口网络32的S参数的矩阵S0为：The S parameter matrix S0 of the four-port network 32 is:

其中，S72、S73、S37是四端口网络32的其中三个S参数。Among them, S72, S73, and S37 are three of the S parameters of the four-port network 32.

在图3中参考面Ⅲ处，四端口网络32的第一连接端口和第二连接端口分别连接了长度为d ₃和d ₄的第一去耦传输线33和第二去耦传输线34，故四端口网络32的S参数的矩阵S可由式(25)中的S参数演算得到： At the reference plane III in FIG. 3, the first connection port and the second connection port of the four-port network 32 are connected to the first decoupling transmission line 33 and the second decoupling transmission line 34 _{with lengths d 3} and d _{4, respectively.} The S-parameter matrix S of the port network 32 can be calculated by the S-parameter calculation in equation (25):

其中，e为自然常数，j为虚数的表示符号，k为波数，且式(25)中的S ₃₇等于式(26)中的S ₇₃。 Among them, e is a natural constant, j is the sign of an imaginary number, k is the wave number, and S ₃₇ _{in equation (25) is equal to S 73} in equation (26).

四端口网络32与四端口网络32’未连接前组成一个八端口网络，其S参数的关系式为：The four-port network 32 and the four-port network 32' form an eight-port network before they are connected, and the relational formula of the S parameter is:

其中：in:

表示将式(27)中的矩阵写为分块矩阵形式：Indicates that the matrix in equation (27) is written in the form of a block matrix:

其中，S ₇₇、S ₂₂、S ₂₇是四端口网络32的其中三个S参数，且S ₂₇是互耦系数。 Among them, S ₇₇ , S ₂₂ , and S ₂₇ are three of the S parameters of the four-port network 32, and S ₂₇ is the mutual coupling coefficient.

写成方程组形式：Written in the form of a system of equations:

由式(30)可将式(28)简写为：From equation (30), equation (28) can be abbreviated as:

[a ₂]＝[Γ]·[b ₂] (31) [a ₂ ]=[Γ]·[b ₂ ] (31)

将式(31)代入式(30)可知：Substituting equation (31) into equation (30), we know:

由式(32)中第②式可得：From the formula ② in formula (32), we can get:

[b ₂]＝{E-[S ₂₂][Γ]} ^-1[S ₂₇][a ₇] (33) [b ₂ ]={E-[S ₂₂ ][Γ]} ^-1 [S ₂₇ ][a ₇ ] (33)

式(33)中，E代表单位矩阵。In formula (33), E represents the identity matrix.

将式(33)代入式(32)中第①式可得：Substituting formula (33) into formula (32), formula ① can be obtained:

[b ₇]＝[S ₇₇][a ₇]+[S ₇₂][Γ]{E-[S ₂₂][Γ]} ^-1[S ₂₇][a ₇] (34) [b ₇ ]=[S ₇₇ ][a ₇ ]+[S ₇₂ ][Γ]{E-[S ₂₂ ][Γ]} ^-1 [S ₂₇ ][a ₇ ] (34)

由式(34)可得到，四端口网络32和四端口网络32’之间通过第一去耦传输线33和第二去耦传输线34连接后形成的新的四端口网络(7、2、7’、2’)的S参数的矩阵S _Four-port为： It can be obtained from equation (34) that the four-port network 32 and the four-port network 32' are connected by the first decoupling transmission line 33 and the second decoupling transmission line 34 to form a new four-port network (7, 2, 7' , 2') S parameter matrix S _Four-port is:

S _Four-port＝[S ₇₇]+[S ₇₂][Γ]{E-[S ₂₂][Γ]} ^-1[S ₂₇] (35) S _Four-port = [S ₇₇ ]+[S ₇₂ ][Γ]{E-[S ₂₂ ][Γ]} ^-1 [S ₂₇ ] (35)

在此指出，这里的新的四端口网络的四个端口是指四端口网络32和四端口网络32’连接后，组成的整体对外的四个端口(a ₇,b ₇)、(a ₂,b ₂)、(a’ ₇,b’ ₇)和(a’ ₂,b’ ₂)。 It is pointed out here that the four ports of the new four-port network here refer to the four external ports (a ₇ , b ₇ ), (a ₂ , b ₂ ), (a' ₇ ,b' ₇ ) and (a' ₂ ,b' ₂ ).

将式(27)和式(29)所规划的分块矩阵代入式(35)，即可得到该新的四端口网络的新的S参数的矩阵S _Four-port为： Substituting the block matrix planned by equation (27) and equation (29) into equation (35), the new S parameter matrix S _Four-port of the new four-port network can be obtained as:

通过数字运算，可得该新的四端口网络的S参数的矩阵S _Four-port为： Through numerical calculation, the S-parameter matrix S _Four-port of the new four-port network can be obtained as:

将该新的四端口网络的端口顺序调整为7→7’→2→2’，则式(37)变为：Adjust the port sequence of the new four-port network to 7→7'→2→2', then the formula (37) becomes:

将式(38)改写成分块矩阵的形式：Rewrite formula (38) into the form of a block matrix:

设该两个天线单元10和20形成的二元天线的S参数的矩阵S _array为： _{Suppose the S parameter matrix S array} of the binary antenna formed by the two antenna elements 10 and 20 is:

式(16)中，S’ ₁₂为二元天线在第二频段初始隔离度的强度，即，两个相邻的天线单元10和20之间未连接去耦网络时在第二频段的隔离度的强度；S’ ₁₁、S’ ₂₁和S’ ₂₂分别为两个相邻的天线单元10和20之间未连接去耦网络时的输入反射系数、正向传输系数(增益)和输出反射系数。 In the formula (16), S _'12 is a binary intensity initial isolation of the antenna a second frequency band, i.e., two adjacent antenna isolation unit is not in the second frequency band when the decoupling network is connected between the 10 and the 20 strength; S _'11, S' ₂₁ and S _'22, respectively two

adjacent antenna elements

10 and 20 are not connected between the input reflection coefficient when the decoupling network, the forward transmission coefficient (gain) and output reflection coefficients .

四端口网络32和四端口网络32’之间通过第一去耦传输线33和第二去耦传输线34连接在一起后，形成的新的四端口网络再与两个天线单元10和20连接后，组建成一个二端口网络。该二端口网络的S参数的矩阵[S]为：After the four-port network 32 and the four-port network 32' are connected together by the first decoupling transmission line 33 and the second decoupling transmission line 34, the new four-port network formed is connected to the two

antenna units

10 and 20, Build a two-port network. The S parameter matrix [S] of the two-port network is:

[S]＝[S ₇₇]+[S ₇₂][S _array]{E-[S ₂₂][S _array]} ^-1[S ₂₇] (41) [S]=[S ₇₇ ]+[S ₇₂ ][S _array ]{E-[S ₂₂ ][S _array ]} ^-1 [S ₂₇ ] (41)

在此指出，这里的二端口网络的二端口是指该新的四端口网络连接了天线单元10和20之后，只剩下的两个与三端口网络连接的端口(a ₇,b ₇)和(a’ ₇,b’ ₇)。 It is pointed out here that the two ports of the two-port network here means that after the new four-port network is connected to the

antenna units

10 and 20, there are only two ports (a ₇ , b ₇ ) and (a' ₇ ,b' ₇ ).

将式(38)与式(39)所定义的分块矩阵代入式(41)，可得：Substituting the block matrix defined by equation (38) and equation (39) into equation (41), we can get:

由式(42)可知，通过设计第一去耦传输线33和第二去耦传输线34的长度d ₃与d ₄，以及四端口网络的S参数，即可精确定义天线单元间在第二频段的耦合度D1。也即，当预设好所需的耦合度后，上式可表示为： It can be seen from equation (42) that by designing the lengths d ₃ and d _{4 of the} first decoupling transmission line 33 and the second decoupling transmission line 34, and the S parameter of the four-port network, it is possible to precisely define the antenna unit in the second frequency band. Coupling degree D1. That is, when the required degree of coupling is preset, the above formula can be expressed as:

因此，可以将第一去耦传输线33和第二去耦传输线34的长度d ₃与d ₄和四端口网络的S参数配置为使天线单元10、20之间在第二频段的耦合度D1满足预设耦合度。 _{Therefore, the lengths d 3} and d _{4 of the} first decoupling transmission line 33 and the second decoupling transmission line 34 and the S parameter of the four-port network can be configured such that the coupling degree D1 between the

antenna units

10 and 20 in the second frequency band satisfies Preset the degree of coupling.

举例而言，当需要去耦网络将两个天线单元10、20之间在第二频段的互耦完全抵消时，令预设耦合度为0，则：For example, when the decoupling network is required to completely cancel the mutual coupling between the two antenna units 10 and 20 in the second frequency band, the preset coupling degree is set to 0, then:

进一步地，在令预设耦合度为0的情况下，可将S’ ₁₂用四端口网络的S参数表示： Further, S-parameters, in a case where the preset order of the degree of coupling is 0, may be S _'12 four-port network represented by:

令四端口网络(例如，前述的定向耦合器)的耦合系数S ₇₃＝D，则

代入上式可得： _{Let the coupling coefficient S 73} =D of the four-port network (for example, the aforementioned directional coupler), then

Substituting the above formula to get:

令k(d ₃+d ₄)＝2π，φs ₇₂＝π， Let k(d ₃ +d ₄ )=2π, φs ₇₂ =π,

其中，φs ₇₂代表四端口网络的参数S ₇₂的相位，φs ₇₃代表四端口网络的参数S ₇₃的相位。 Among them, φs ₇₂ represents the phase of the parameter S ₇₂ of the four-port network, and φs ₇₃ represents the phase _{of the parameter S 73 of the four-port network.}

进而，可算得耦合器的耦合度D，如下：Furthermore, the coupling degree D of the coupler can be calculated as follows:

并且，第一去耦传输线33和第二去耦传输线34的长度d ₃与d ₄分别为： _{In addition, the lengths d 3} and d _{4 of the} first decoupling transmission line 33 and the second decoupling transmission line 34 are respectively:

其中，φ ₂₁为去耦前隔离度的相位，Pi对应的数值为3.14，S’ ₁₂为去耦前隔离度的强度。 Wherein, φ ₂₁ is decoupled phase before isolation, the corresponding value of Pi is 3.14, S _'12 decoupling strength before isolation.

由此可知，能够根据S’ ₁₂计算出所需定向耦合器的耦合度D；还能够根据φ ₂₁计算出第一去耦传输线33和第二去耦传输线34的长度d ₃与d ₄。 This indicates that D can be calculated desired degree of coupling of the directional coupler according to S _'12; also possible to calculate the length of the transmission line 33 is coupled to a first and second decoupling the transmission line 34 and d ₃ of d ₄ according to φ _21.

另外，在令预设耦合度为0的情况下，所需定向耦合器还可满足以下结构参数：In addition, when the preset coupling degree is 0, the required directional coupler can also meet the following structural parameters:

其中，第二传输线322、第三传输线323、第四传输线324、第五传输线325、第一去耦传输线33和第二去耦传输线34的特性阻抗Z ₀通常是预先设定的，例如设定成50Ω；h可为阻抗变换因子。因此，依据由式(46)计算出的定向耦合器的耦合度D，再根据上述三端口网络31的计算得出的d’ ₁的特性阻抗Z’ ₀，Z ₀＝Z’ ₀，以及式(48)和式(49)，就能够确定如图5所示的定向耦合器各枝节的特性阻抗，也就是：第六传输线326和第八传输线328的特性阻抗Z ₁，以及第七传输线327和第九传输线329的特性阻抗Z ₂。进而，能够计算出对应特性阻抗的传输线的线宽，以便制作出定向耦合器。基于此方法，可以提高多天线***的隔离度。 _{Among them, the characteristic impedance Z 0 of the} second transmission line 322, the third transmission line 323, the fourth transmission line 324, the fifth transmission line 325, the first decoupling transmission line 33 and the second decoupling transmission line 34 is usually preset, for example, set Into 50Ω; h can be the impedance conversion factor. Thus, based on calculated by the formula (46) coupling the directional coupler D, and then calculates the three-port network according to the derived 31 d 'is the characteristic impedance Z _{_{_1' 0, Z 0 = Z '}} 0, and the formula (48) and equation (49), the characteristic impedance of each branch of the directional coupler as shown in FIG. 5 can be determined, that is: the characteristic impedance Z _{1 of the} sixth transmission line 326 and the eighth transmission line 328, and the seventh transmission line 327 And the characteristic impedance Z _{2 of the} ninth transmission line 329. Furthermore, the line width of the transmission line corresponding to the characteristic impedance can be calculated in order to fabricate a directional coupler. Based on this method, the isolation of the multi-antenna system can be improved.

一些实施例中，可以通过配置传输线的线宽来使传输线的特性阻抗满足要求。例如，按照上述关系式获得第二传输线322、第三传输线323、第四传输线324、第五传输线325、第一去耦传输线33和第二去耦传输线34的特性阻抗Z ₀之后，可以将这些传输线的线宽配置为使其特性阻抗满足上述特性阻抗Z ₀。举例而言，确定所需的第二传输线322、第三传输线323、第四传输线324、第五传输线325、第一去耦传输线33和第二去耦传输线34的厚度、PCB板材的相对介电常数以及介质层厚度等因素后，根据特性阻抗和线宽之间的关系以及所需的特性阻抗Z ₀，即可计算出这些传输线的线宽。因此，根据该计算结果来配置第二传输线322、第三传输线323、第四传输线324、第五传输线325、第一去耦传输线33和第二去耦传输线34的线宽，从而获得具有上述特性阻抗Z ₀的多个传输线。 In some embodiments, the characteristic impedance of the transmission line can meet the requirements by configuring the line width of the transmission line. _{For example, after obtaining the characteristic impedance Z 0 of the} second transmission line 322, the third transmission line 323, the fourth transmission line 324, the fifth transmission line 325, the first decoupling transmission line 33, and the second decoupling transmission line 34 according to the above relationship, these The line width of the transmission line is configured such that its characteristic impedance satisfies the aforementioned characteristic impedance Z ₀ . For example, determine the required thickness of the second transmission line 322, the third transmission line 323, the fourth transmission line 324, the fifth transmission line 325, the first decoupling transmission line 33 and the second decoupling transmission line 34, and the relative dielectric of the PCB board. After factors such as the constant and the thickness of the dielectric layer, according to the relationship between the characteristic impedance and the line width and the required characteristic impedance Z ₀ , the line width of these transmission lines can be calculated. Therefore, according to the calculation result, the line widths of the second transmission line 322, the third transmission line 323, the fourth transmission line 324, the fifth transmission line 325, the first decoupling transmission line 33, and the second decoupling transmission line 34 are configured to obtain the above-mentioned characteristics. Multiple transmission lines with impedance Z _0.

类似地，可以通过配置第六传输线326和第八传输线328的线宽来使他们满足上述所需的特性阻抗Z ₁。第七传输线327和第九传输线329的线宽则可以根据特性阻抗和线宽之间的关系以及所需的特性阻抗Z ₂来计算。因此，根据该计算结果来配置第六传输线326和第八传输线328以及第七传输线327和第九传输线329的线宽，从而获得具有上述特性阻抗Z ₁和Z ₂的多个传输线。 Similarly, the line widths of the sixth transmission line 326 and the eighth transmission line 328 can be configured to satisfy the aforementioned required characteristic impedance Z ₁ . The line width of the seventh transmission line 327 and the ninth transmission line 329 can be calculated based on the relationship between the characteristic impedance and the line width and the required characteristic impedance Z ₂ . Thus, based on the calculation result 326 to configure the transmission line 328 and an eighth transmission line and the seventh transmission line 329 and the width of the ninth sixth transmission line 327, thereby obtaining a plurality of transmission line impedance Z ₁ and Z ₂ has the above properties.

可以理解地，上述四端口网络还可以是其他形式的定向耦合器，例如耦合线定向耦合器、小型化定向耦合器，宽带化定向耦合器。It is understandable that the aforementioned four-port network may also be other forms of directional couplers, such as coupled line directional couplers, miniaturized directional couplers, and broadband directional couplers.

在一些实施例中，本申请的电子设备可以是如图7所示的手机100a，该手机100a包括但不限于以下结构：壳体41以及与壳体50连接的显示屏组件50。其中，壳体41和显示屏组件50之间形成容置空间。手机的其他电子元器件，例如，主板、电池和天线装置60等均设置在容置空间内。In some embodiments, the electronic device of the present application may be a mobile phone 100a as shown in FIG. Wherein, an accommodating space is formed between the housing 41 and the display screen assembly 50. Other electronic components of the mobile phone, such as the main board, battery, and antenna device 60, are all arranged in the accommodating space.

具体而言，壳体41可以由塑料、玻璃、陶瓷、纤维复合材料、金属(例如，不锈钢，铝等)或者其他合适的材料制成。图6所示的壳体41大体为具有圆角的矩形。当然，壳体41也可以具有其他形状，例如圆形，长圆形和椭圆形等。Specifically, the housing 41 may be made of plastic, glass, ceramic, fiber composite material, metal (for example, stainless steel, aluminum, etc.), or other suitable materials. The housing 41 shown in FIG. 6 is substantially rectangular with rounded corners. Of course, the housing 41 can also have other shapes, such as a circular shape, an oblong shape, an oval shape, and so on.

显示屏组件50包括显示屏盖板51以及显示模组52。显示模组52贴设于显示屏盖板51的内表面。壳体41与显示屏组件50的显示屏盖板51连接。其中，显示屏盖板51可以为玻璃材质；显示模组52可以为OLED柔性显示屏结构，具体可以包括基板、显示面板(Panel)以及辅料层等，另外，显示模组52与显示屏盖板51之间还可以夹设偏光膜片等结构，关于显示模组52的详细层叠结构此处不做限定。34The display assembly 50 includes a display cover 51 and a display module 52. The display module 52 is attached to the inner surface of the display cover 51. The housing 41 is connected to the display cover 51 of the display assembly 50. Among them, the display cover 51 may be made of glass; the display module 52 may be an OLED flexible display structure, which may specifically include a substrate, a display panel (Panel), and auxiliary material layers, etc., in addition, the display module 52 and the display cover Structures such as a polarizing film can also be sandwiched between 51, and the detailed laminated structure of the display module 52 is not limited here. 34

天线装置60可以完全收容在壳体41内部，或者，也可以嵌设在壳体41上，并且，天线装置60的一部分可暴露在壳体41外表面上。The antenna device 60 may be completely contained in the housing 41, or may be embedded in the housing 41, and a part of the antenna device 60 may be exposed on the outer surface of the housing 41.

一些实施例中，天线装置60可以包括多个间隔设置的天线单元、多个去耦网络以及第一、第二和第三去耦传输线。多个去耦网络与多个天线单元一一对应，第一、第二和第三去耦传输线则连接在相邻的去耦网络之间。其中，去耦网络则可以是上述任一实施例的去耦网络。In some embodiments, the antenna device 60 may include a plurality of antenna units arranged at intervals, a plurality of decoupling networks, and first, second, and third decoupling transmission lines. The multiple decoupling networks correspond to the multiple antenna units one-to-one, and the first, second, and third decoupling transmission lines are connected between adjacent decoupling networks. Wherein, the decoupling network may be the decoupling network of any of the above embodiments.

一些实施例中，天线装置60的多个天线单元可以是图8至图11所示的四元直线阵，即，具有四个沿直线排列的天线单元10a、20a、10b和20b。In some embodiments, the multiple antenna elements of the antenna device 60 may be a four-element linear array as shown in FIGS. 8 to 11, that is, there are four

antenna elements

10a, 20a, 10b, and 20b arranged in a straight line.

具体地，结合图12，该天线装置60包括依次叠层设置的第一基板61、第二基板62、第三基板63和射频芯片64，以及形成在第一基板61上的多个天线单元(图11仅示出两个天线单元10a、20a)，形成在第一基板61和第三基板63上的多个金属层661-668(其中，金属层665为接地层665)、穿设在第三基板63和第二基板62内的多根馈线以及设置在第三基板63内的多个去耦网络(例如，第一去耦网络30和第二去耦网络30’)以及连接在他们之间的第一去耦传输线33a、第二去耦传输线34a和第三去耦传输线313a。其中，多根馈线、多个去耦网络以及多个天线单元一一对应。馈线用于将对应的天线单元10a、20a、去耦网络与射频芯片64连接。第一去耦网络30和第二去耦网络30’以及连接在他们之间的第一去耦传输线33a、第二去耦传输线34a和第三去耦传输线313a则用于将相邻的天线单元10a、20a对应的第一去耦网络30和第二去耦网络30’连接在一起，用以抵消天线单元10a、20a之间的耦合。可以理解地，天线装置60还可以包括其他信号传输线。Specifically, with reference to FIG. 12, the antenna device 60 includes a first substrate 61, a second substrate 62, a third substrate 63, and a radio frequency chip 64 that are sequentially stacked in layers, and a plurality of antenna units formed on the first substrate 61 ( FIG. 11 only shows two

antenna elements

10a, 20a), and a plurality of metal layers 661-668 (among them, the metal layer 665 is the ground layer 665) formed on the first substrate 61 and the third substrate 63, pass through the first substrate 61 and the third substrate 63. The multiple feeders in the three substrates 63 and the second substrate 62 and the multiple decoupling networks (for example, the first decoupling network 30 and the second decoupling network 30') arranged in the third substrate 63 and connected between them Between the first decoupling transmission line 33a, the second decoupling transmission line 34a, and the third decoupling transmission line 313a. Among them, multiple feeders, multiple decoupling networks, and multiple antenna units are in one-to-one correspondence. The feeder line is used to connect the

corresponding antenna unit

10a, 20a and the decoupling network to the radio frequency chip 64. The first decoupling network 30 and the second decoupling network 30' and the first decoupling transmission line 33a, the second decoupling transmission line 34a, and the third decoupling transmission line 313a connected between them are used to connect adjacent antenna units The first decoupling network 30 and the second decoupling network 30' corresponding to 10a, 20a are connected together to cancel the coupling between the

antenna units

10a, 20a. Understandably, the antenna device 60 may also include other signal transmission lines.

天线单元10a、20a用于收发射频信号。如图12所示，两个天线单元10a、20a相互间隔设置。天线单元10a、20a为双层贴片天线，包括相互隔离且一一对应的表层辐射片11a、21a和内层辐射片12a、22a。The

antenna units

10a, 20a are used to send and receive radio frequency signals. As shown in Fig. 12, the two

antenna units

10a, 20a are arranged at intervals. The

antenna units

10a, 20a are double-layer patch antennas, including surface radiating plates 11a, 21a and

inner radiating plates

12a, 22a that are isolated from each other and correspond to each other one-to-one.

第一基板61包括相对设置的第一外表面611和第一内表面612。表层辐射片11a、21a设置在第一外表面611，内层辐射片12a、22a设置在第一内表面612。通过第一基板61将内层辐射片12a、22a和表层辐射片11a、21a隔离，使得表层辐射片11a、21a和内层辐射片12a、22a之间间隔一定的距离，从而满足天线频段的性能要求。表层辐射片11a、21a和内层辐射片12a、22a在第一基板61的垂直投影至少部分重合。The first substrate 61 includes a first outer surface 611 and a first inner surface 612 that are oppositely disposed. The surface layer radiating sheets 11 a and 21 a are arranged on the first outer surface 611, and the inner

layer radiating sheets

12 a and 22 a are arranged on the first inner surface 612. The

inner radiating fins

12a, 22a and the surface radiating fins 11a, 21a are isolated by the first substrate 61, so that the surface radiating fins 11a, 21a and the

inner radiating fins

12a, 22a are separated by a certain distance, so as to meet the performance of the antenna frequency band Require. The vertical projections of the surface radiating sheets 11a, 21a and the

inner radiating sheets

12a, 22a on the first substrate 61 at least partially overlap.

第一基板61可以由诸如环氧树脂的热固性树脂、诸如聚酰亚胺树脂的热塑性树脂、包括诸如玻璃纤维(或玻璃布，或玻璃织物)和/或无机填料的增强材料以及热固性树脂和热塑性树脂的绝缘材料(例如，半固化片、ABF(Ajinomoto Build-up Film)、感光电介质(PID)等)制成。然而，第一基板61的材料不限于此。也就是说，玻璃板或陶瓷板也可用作第一基板61的材料。可选地，具有低的介电损耗的液晶聚合物(LCP)也可用作第一基板61的材料，以减小信号损耗。The first substrate 61 may be made of thermosetting resin such as epoxy resin, thermoplastic resin such as polyimide resin, reinforcing material including glass fiber (or glass cloth, or glass fabric) and/or inorganic filler, and thermosetting resin and thermoplastic resin. Resin insulating materials (for example, prepreg, ABF (Ajinomoto Build-up Film), photosensitive dielectric (PID), etc.) are made. However, the material of the first substrate 61 is not limited to this. That is, a glass plate or a ceramic plate can also be used as the material of the first substrate 61. Optionally, liquid crystal polymer (LCP) with low dielectric loss can also be used as the material of the first substrate 61 to reduce signal loss.

在一些实施例中，第一基板61可以是半固化片，如图12所示，第一基板61包括叠设的三层半固化片。第一基板61的三层半固化片中，相邻的半固化片之间分别设有金属层662和663。第一基板61的第一外表面还设有金属层661，该金属层661与表层辐射片11a、21a位于同一层，且相互绝缘。第一基板61的第一内表面612设有金属层664，该金属层664与内层辐射片12a、22a位于同一层，且相互绝缘。金属层661、662、663和664可以由金属铜、铝、银、锡、金、镍、铅、钛或他们的合金等导电材料制成。本实施例中，金属层661、662、663和664均为铜层。In some embodiments, the first substrate 61 may be a prepreg. As shown in FIG. 12, the first substrate 61 includes three layers of prepregs stacked. Among the three-layer prepregs of the first substrate 61,

metal layers

662 and 663 are respectively provided between adjacent prepregs. The first outer surface of the first substrate 61 is further provided with a metal layer 661, and the metal layer 661 is located on the same layer as the surface radiation sheets 11a, 21a and insulated from each other. The first inner surface 612 of the first substrate 61 is provided with a metal layer 664, and the metal layer 664 is located on the same layer as the

inner radiating sheets

12a, 22a and insulated from each other. The metal layers 661, 662, 663, and 664 may be made of conductive materials such as metallic copper, aluminum, silver, tin, gold, nickel, lead, titanium, or their alloys. In this embodiment, the metal layers 661, 662, 663, and 664 are all copper layers.

金属层661的设置使得第一基板61的第一外表面611的铺铜率与第一基板61的其他半固化片的表面的铺铜率差异减少，在第一基板61制造的过程中，铺铜率差异减少能够减少气泡的产生，从而提升第一基板61的制造良率。同理，金属层664的设置也使得第一基板61的第一内表面612的铺铜率与第一基板61的其他半固化片的表面的铺铜率差异减少，以减少第一基板61制造过程中气泡的产生，从而提升第一基板61的制造良率。The arrangement of the metal layer 661 reduces the difference between the copper spreading rate of the first outer surface 611 of the first substrate 61 and the copper spreading rate of other prepreg surfaces of the first substrate 61. During the manufacturing process of the first substrate 61, the copper spreading rate The reduction of the difference can reduce the generation of bubbles, thereby improving the manufacturing yield of the first substrate 61. In the same way, the arrangement of the metal layer 664 also reduces the difference between the copper spreading rate of the first inner surface 612 of the first substrate 61 and the copper spreading rate of other prepreg surfaces of the first substrate 61, so as to reduce the manufacturing process of the first substrate 61. The air bubbles are generated, thereby improving the manufacturing yield of the first substrate 61.

第一基板61上还设有贯穿第一内表面612和第一外表面611接地过孔613，以使不同的金属层661、662、663和664彼此连接，并进一步连接到接地层665。具体地，可以将导电材料完全填充接地过孔613，或者可以将导电材料沿着接地过孔613的孔壁形成导电层。其中，导电材料可以是铜、铝、银、锡、金、镍、铅、钛或他们的合金等。接地过孔613可以具有圆柱状、沙漏状或者锥体状等。The first substrate 61 is also provided with grounding vias 613 penetrating through the first inner surface 612 and the first outer surface 611 to connect

different metal layers

661, 662, 663 and 664 to each other and further to the ground layer 665. Specifically, the conductive material may be completely filled in the ground via 613, or the conductive material may be formed along the wall of the ground via 613 to form a conductive layer. Among them, the conductive material may be copper, aluminum, silver, tin, gold, nickel, lead, titanium, or their alloys. The ground via 613 may have a cylindrical shape, an hourglass shape, a cone shape, or the like.

第二基板62包括第一侧表面621和第二侧表面622，其中，第一侧表面621叠设在第一基板61的第一内表面612上。第二基板62可以为PCB板的核层，由聚酰亚胺、聚对苯二甲酸乙二醇酯、聚萘二甲酸乙二醇酯等材料制成。第二基板62上设有贯穿第一侧表面621和第二侧表面622的接地过孔623和馈线过孔624。The second substrate 62 includes a first side surface 621 and a second side surface 622, wherein the first side surface 621 is stacked on the first inner surface 612 of the first substrate 61. The second substrate 62 may be the core layer of a PCB board, and is made of materials such as polyimide, polyethylene terephthalate, and polyethylene naphthalate. The second substrate 62 is provided with a ground via 623 and a feeder via 624 penetrating through the first side surface 621 and the second side surface 622.

接地层665夹设在第二基板62和第三基板63之间。接地层665上开设有馈线过孔665a。The ground layer 665 is sandwiched between the second substrate 62 and the third substrate 63. The ground layer 665 is provided with a feeder via 665a.

第三基板63包括相对设置的第二外表面631和第二内表面632。第三基板63的第二内表面632叠设于第二基板62的第二侧表面622，接地层665夹设在第二侧表面622和第二内表面632之间。The third substrate 63 includes a second outer surface 631 and a second inner surface 632 opposite to each other. The second inner surface 632 of the third substrate 63 is stacked on the second side surface 622 of the second substrate 62, and the ground layer 665 is sandwiched between the second side surface 622 and the second inner surface 632.

第三基板63的形成材料可以与第一基板61的材料相同。在一些实施例中，第三基板63可以是半固化片，并为多层解耦股。如图11所示，第三基板63包括三层半固化片。第三基板63的三层半固化片中，相邻的半固化片之间设有金属层666和667，分别作为馈电网络和控制线布线层。第三基板63的第二外表面631上设有金属层668，金属层668与射频芯片64焊接在一起。其中，金属层666、667和668可以由金属铜、铝、银、锡、金、镍、铅、钛或他们的合金等导电材料制成。本实施例中，金属层666、667和668均为铜层。The formation material of the third substrate 63 may be the same as the material of the first substrate 61. In some embodiments, the third substrate 63 may be a prepreg and a multilayer decoupling strand. As shown in FIG. 11, the third substrate 63 includes a three-layer prepreg. Among the three-layer prepregs of the third substrate 63,

metal layers

666 and 667 are provided between adjacent prepregs, which serve as feeder network and control line wiring layers, respectively. A metal layer 668 is provided on the second outer surface 631 of the third substrate 63, and the metal layer 668 and the radio frequency chip 64 are welded together. Among them, the metal layers 666, 667, and 668 may be made of conductive materials such as metallic copper, aluminum, silver, tin, gold, nickel, lead, titanium, or their alloys. In this embodiment, the metal layers 666, 667, and 668 are all copper layers.

第三基板63上开设有布线过孔。布线过孔包括接地过孔633，以使不同的金属层666、667和668彼此连接，并进一步连接到接地层665。布线过孔还包括供馈线穿过的馈线过孔634和供控制线穿过的信号过孔635等。与第一基板61上的接地过孔613类似，第三基板63上的布线过孔内可以完全填充导电材料，也可以在孔壁上形成导电层。各种布线过孔的形状可以是圆柱状、沙漏状或者锥体状。The third substrate 63 is provided with wiring vias. The wiring via includes a ground via 633 to connect the

different metal layers

666, 667, and 668 to each other and further to the ground layer 665. The wiring vias also include a feeder via 634 for the feeder to pass through, and a signal via 635 for the control line to pass through. Similar to the ground via 613 on the first substrate 61, the wiring via on the third substrate 63 can be completely filled with conductive material, or a conductive layer can be formed on the wall of the hole. The shape of the various wiring vias can be cylindrical, hourglass, or cone-shaped.

射频芯片64设置在第三基板63远离接地层665的一侧，相当于前述实施例的馈源，例如第一馈源40和第二馈源40’。当有多个馈源时，多个馈源可以相同或不同。The radio frequency chip 64 is arranged on the side of the third substrate 63 away from the ground layer 665, which is equivalent to the feed sources of the foregoing embodiment, such as the first feed source 40 and the second feed source 40'. When there are multiple feed sources, the multiple feed sources can be the same or different.

馈线包括第一馈线65和第二馈线67。去耦网络30、30’分别连接在对应的第一馈线65和第二馈线67之间。第一馈线65的一端设置在第三基板63远离第二基板62的一侧以连接射频芯片64，另一端延伸至第三基板63内，即，穿过第三基板63的馈线过孔634以连接至去耦网络30。第二馈线67的一部分设置在第三基板67内以连接去耦网络30，另一部分贯穿第二基板，即，穿过第二基板62的馈线过孔624以将连接对应的天线单元10a。因此，射频芯片64、第一馈线65、去耦网络30、第二馈线67和天线单元10依次连接，实现了天线单元10和射频芯片64之间的信号传输。。馈线与各金属层，例如本实施例的金属层666、667、668以及接地层相互绝缘。The feeder line includes a first feeder line 65 and a second feeder line 67. The decoupling networks 30, 30' are respectively connected between the corresponding first feeder 65 and the second feeder 67. One end of the first feeder 65 is arranged on a side of the third substrate 63 away from the second substrate 62 to connect to the radio frequency chip 64, and the other end extends into the third substrate 63, that is, passes through the feeder via 634 of the third substrate 63. Connected to the decoupling network 30. A part of the second feeder 67 is disposed in the third substrate 67 to connect to the decoupling network 30, and the other part penetrates the second substrate, that is, passes through the feeder via 624 of the second substrate 62 to connect the corresponding antenna unit 10a. Therefore, the radio frequency chip 64, the first feeder line 65, the decoupling network 30, the second feeder line 67, and the antenna unit 10 are connected in sequence to realize signal transmission between the antenna unit 10 and the radio frequency chip 64. . The feeder is insulated from each metal layer, such as the metal layers 666, 667, 668 and the ground layer in this embodiment.

此外，第三基板63上还设有其他信号传输线，例如控制线68和电源线69等。如图12所示，电源线69设置在第三基板63的第二外表面631上，并焊接在射频芯片64上。控制线68设置在第三基板63靠近射频芯片64的半固化片和与其相邻的半固化片之间，并穿过半固化片上的信号过孔635而与射频芯片64连接。In addition, other signal transmission lines are provided on the third substrate 63, such as a control line 68 and a power line 69. As shown in FIG. 12, the power cord 69 is disposed on the second outer surface 631 of the third substrate 63 and soldered on the radio frequency chip 64. The control line 68 is arranged between the prepreg of the third substrate 63 close to the radio frequency chip 64 and the adjacent prepreg, and passes through the signal via 635 on the prepreg to connect to the radio frequency chip 64.

此外，第三基板63还用于承载多个去耦网络以及连接在他们之间的第一去耦传输线33a、第二去耦传输线34a和第三去耦传输线313a。去耦网络可以是前述实任一实施例的去耦网络。第一去耦网络30的三端口网络31中的第一传输线311通过第一馈线连接至射频芯片64，四端口网络32的第三传输线323通过第二馈线67连接至对应的天线单元10a。In addition, the third substrate 63 is also used to carry multiple decoupling networks and the first decoupling transmission line 33a, the second decoupling transmission line 34a, and the third decoupling transmission line 313a connected between them. The decoupling network can be the decoupling network of any of the foregoing embodiments. The first transmission line 311 in the three-port network 31 of the first decoupling network 30 is connected to the radio frequency chip 64 through a first feeder, and the third transmission line 323 of the four-port network 32 is connected to the corresponding antenna unit 10a through a second feeder 67.

由于在天线装置的两个相邻天线单元10a和20a之间设置了第一去耦网络30和第二去耦网络30’，并且第一去耦传输线33a、第二去耦传输线34a和第三去耦传输线313a在第一去耦网络30和第二去耦网络30’之间连接，因此从射频芯片64发出的信号输入三端口网络31之后，一部分输入至四端口网络32，另一部分经第三去耦传输线传输至第二去耦网络30’以到达相邻的天线单元20a。输入至四端口网络32的信号的一部分经第三传输线323a传输至天线单元的内层辐射片12a，另一部分经第一去耦传输线33a和第二去耦传输线34a传输至第二去耦网络30’以到达相邻的天线单元20a，从而抵消两个天线单元10a、20a之间的耦合。Since the first decoupling network 30 and the second decoupling network 30' are provided between the two

adjacent antenna units

10a and 20a of the antenna device, and the first decoupling transmission line 33a, the second decoupling transmission line 34a and the third decoupling network The decoupling transmission line 313a is connected between the first decoupling network 30 and the second decoupling network 30'. Therefore, after the signal sent from the radio frequency chip 64 is input to the three-port network 31, one part is input to the four-port network 32, and the other part passes through the first The three decoupling transmission lines are transmitted to the second decoupling network 30' to reach the adjacent antenna unit 20a. Part of the signal input to the four-port network 32 is transmitted to the inner radiating sheet 12a of the antenna unit through the third transmission line 323a, and the other part is transmitted to the second decoupling network 30 through the first decoupling transmission line 33a and the second decoupling transmission line 34a 'To reach the adjacent antenna unit 20a, thereby canceling the coupling between the two

antenna units

10a, 20a.

两个天线单元10a、20a之间的耦合度可以通过三端口网络和四端口网络的散射参数和第一、第二及第三去耦传输线313a、33a、34a的长度来进行定义。The degree of coupling between the two

antenna units

10a, 20a can be defined by the scattering parameters of the three-port network and the four-port network and the length of the first, second, and third

decoupling transmission lines

313a, 33a, 34a.

具体地，如上述阵列天线的实施例，本实施例的天线装置60的去耦网络中，三端口网络的第三去耦传输线313a的长度d5以及三端口网络的S参数以及预设耦合度满足以下关系：

其中，改预设耦合度是在第一频段内的预设耦合度。 Specifically, as in the above-mentioned embodiment of the array antenna, in the decoupling network of the antenna device 60 of this embodiment, the length d5 of the third decoupling transmission line 313a of the three-port network and the S parameter and the preset coupling degree of the three-port network satisfy The following relationships:

Wherein, changing the preset coupling degree is the preset coupling degree in the first frequency band.

天线装置60去耦网络中，四端口网络32的第一去耦传输线33a和第二去耦传输线34a的长度d ₃与d ₄，四端口网络32的S参数，以及预设耦合度满足以下关系： _{In the decoupling network of the antenna device 60, the lengths d 3} and d ₄ of the first decoupling transmission line 33a and the second decoupling transmission line 34a of the four-port network 32, the S parameters of the four-port network 32, and the preset coupling degree satisfy the following relationship :

其中，该预设耦合度是在第二频段内的预设耦合度。Wherein, the predetermined degree of coupling is a predetermined degree of coupling in the second frequency band.

一些实施例中，三端口网络中的去耦传输线313a的长度和功分器的功分比配置为使两个天线单元10a、20a之间在第一频段的耦合度置零。进一步地，可以将四端口网络32中的第一去耦传输线33a和第二去耦传输线34a的长度d ₃与d ₄和四端口网络32的S参数配置为使两个天线单元10a、20a之间在第二频段的耦合度D1置零。 In some embodiments, the length of the decoupling transmission line 313a in the three-port network and the power division ratio of the power divider are configured to zero the coupling degree between the two

antenna units

10a, 20a in the first frequency band. Further, the length of the first decoupling the transmission line 32 and the second four-port decoupling network 33a of the transmission line 34a can be the parameter d S ₃ and d ₄ and four-port network 32 is configured such that two

antenna elements

10a, 20a of The coupling degree D1 in the second frequency band is set to zero.

一些实施例中，第三去耦传输线313a的长度和功分器的功分比根据两个天线单元10a、20a之间的初始隔离度来进行配置。具体地，三端口网络的功分比根据初始隔离度的强度来进行配置，第三去耦传输线313a的长度则根据初始隔离度的相位来进行配置，具体参见前述关系式(21)和(22)。In some embodiments, the length of the third decoupling transmission line 313a and the power division ratio of the power divider are configured according to the initial isolation between the two

antenna units

10a, 20a. Specifically, the power division ratio of the three-port network is configured according to the strength of the initial isolation, and the length of the third decoupling transmission line 313a is configured according to the phase of the initial isolation. For details, refer to the aforementioned relations (21) and (22). ).

进一步地，在一些实施例中，在将两个天线单元10a、20a之间在第二频段的耦合度D1置零的情况下，再根据两个天线单元10a、20a之间的初始隔离度S’ ₁₂计算出所需定向耦合器的耦合度D，具体参见前述的公式(46)。 Further, in some embodiments, when the coupling degree D1 between the two

antenna units

10a and 20a in the second frequency band is set to zero, the initial isolation degree S between the two

antenna units

10a and 20a is set to zero. _'12 Calculate the coupling degree D of the required directional coupler, see the aforementioned formula (46) for details.

一些实施例中，还能够根据去耦前隔离度的相位φ ₂₁计算出第一去耦传输线33a和第二去耦传输线34a的长度d ₃与d ₄，具体参见前述的公式(47)。 _{In some embodiments, the lengths d 3} and d ₄ of the first decoupling transmission line 33 a and the second decoupling transmission line 34 a can also be calculated according to the phase φ _{21 of the} isolation before decoupling. For details, refer to the aforementioned formula (47).

可以理解地，由于第二去耦网络30’可以与第一去耦网络30相同，因此第二去耦网络30’的传输线的长度可与第一去耦网络30中的传输线的长度相同。Understandably, since the second decoupling network 30' can be the same as the first decoupling network 30, the length of the transmission line of the second decoupling network 30' can be the same as the length of the transmission line in the first decoupling network 30.

一些实施例中，功分器的功分比具体可以通过配置第二传输线312a和第三去耦传输线313a的特性阻抗来实现。例如，第二传输线312a的特性阻抗Z’ ₀与第一传输线311a的特性阻抗Z ₆以及功分比(初始隔离度的强度S’ ₁₂)满足上述关系式(23)。第三去耦传输线313a的特性阻抗Z ₅与第一传输线311a的特性阻抗Z ₆以及功分比(即初始隔离度的强度S’ ₁₂)满足上述关系式(24)。 In some embodiments, the power division ratio of the power divider can be specifically realized by configuring the characteristic impedance of the second transmission line 312a and the third decoupling transmission line 313a. For example, the second transmission line 312a characteristic impedance Z _'0 of the first transmission line characteristic impedance Z ₆ 311a and a power divider ratio (initial isolation strength S' ₁₂₎ satisfies the above relation (23). The third characteristic decoupling the transmission line characteristic impedance Z ₅ 313a and 311a of the first transmission line impedance Z ₆ and power dividing ratio (i.e. the initial isolation strength S _'12) satisfies the above relation (24).

一些实施例中，由于四端口网络的第二传输线322a与三端口网络的第二传输线312a同为一根传输线，通过三端口网络31可以计算出第二传输线312a(322a)的特性阻抗Z’ ₀之后，四端口网络的第二传输线322a的特性阻抗Z0即可根据Z ₀＝Z’ ₀得知。四端口网络的第三、第四、第五传输线的特性阻抗均配置为Z’ ₀。根据所计算出的定向耦合器的耦合度D，就能够确定定向耦合器各枝节的特性阻抗，也就是：第六传输线326和第八传输线328的特性阻抗Z ₁，以及第七传输线327和第九传输线329的特性阻抗Z ₂，具体参见前述的公式(24)和(25)。 Some embodiments, since the second transmission line of the second transmission line four-port network 322a and the three-port network 312a impedance Z 31 can calculate the characteristics of the second transmission line 312a (322a) is the same one transmission line, through a three-port network _'0 Thereafter, the characteristics of the transmission line 322a of the second four-port network according to the impedance Z0 of Z _₀ = Z _'0 known. Four-port network of the third, fourth, fifth characteristic impedance of the transmission line are configured as Z _'0. According to the calculated coupling degree D of the directional coupler, the characteristic impedance of each branch of the directional coupler can be determined, that is, the characteristic impedance Z _{1 of the} sixth transmission line 326 and the eighth transmission line 328, and the seventh transmission line 327 and the first transmission line 327 For the characteristic impedance Z _{2 of the} nine transmission line 329, refer to the aforementioned formulas (24) and (25) for details.

如上述天线阵列的实施例所述，可以通过配置传输线的线宽来使传输线的特性阻抗满足要求。例如，例如，第二传输线312a(322a)的线宽配置为使第二传输线312a(322a)满足上述所需的特性阻抗Z’ ₀。第三去耦传输线313a的线宽配置为使第三去耦传输线313a满足上述所需的特性阻抗Z ₅。第二传输线322、第三传输线323、第四传输线324、第五传输线325、第一去耦传输线33a和第二去耦传输线34a的线宽配置为使其特性阻抗满足上述特性阻抗Z ₀。第六传输线326和第八传输线328的线宽配置为使其特性阻抗满足上述特性阻抗Z ₁。第七传输线327和第九传输线329的线宽配置为使其特性阻抗满足上述特性阻抗Z ₂。 As described in the foregoing antenna array embodiment, the characteristic impedance of the transmission line can be configured to meet the requirements by configuring the line width of the transmission line. For example, for example, the line width of the second transmission line 312a (322a) is configured such that the second transmission line 312a (322a) meets the aforementioned required characteristic impedance Z′ ₀ . The line width of the third decoupling transmission line 313a is configured such that the third decoupling transmission line 313a meets the aforementioned required characteristic impedance Z ₅ . The line widths of the second transmission line 322, the third transmission line 323, the fourth transmission line 324, the fifth transmission line 325, the first decoupling transmission line 33a, and the second decoupling transmission line 34a are configured such that their characteristic impedance satisfies the aforementioned characteristic impedance Z ₀ . The line widths of the sixth transmission line 326 and the eighth transmission line 328 are configured such that their characteristic impedance satisfies the aforementioned characteristic impedance Z ₁ . The line widths of the seventh transmission line 327 and the ninth transmission line 329 are configured such that their characteristic impedance satisfies the aforementioned characteristic impedance Z ₂ .

第一去耦网络30、第二去耦网络30’、第一去耦传输线33a、第二去耦传输线34a和第三去耦传输线313a均可以设置在第三基板63的同一层上，例如，第三基板63靠近射频芯片64的半固化片上或者位于中间的半固化片上。图12所示的第一去耦网络30与去耦传输线33a设置在第三基板63位于中间的半固化片上，即，与金属层666同层。第一去耦网络30的传输线和第一、第二、第三去耦传输线33a、34a、313a均在该层上延伸并形成图案。The first decoupling network 30, the second decoupling network 30', the first decoupling transmission line 33a, the second decoupling transmission line 34a, and the third decoupling transmission line 313a may all be arranged on the same layer of the third substrate 63, for example, The third substrate 63 is close to the prepreg of the radio frequency chip 64 or on the prepreg in the middle. The first decoupling network 30 and the decoupling transmission line 33 a shown in FIG. 12 are arranged on the prepreg with the third substrate 63 in the middle, that is, the same layer as the metal layer 666. The transmission lines of the first decoupling network 30 and the first, second, and third

decoupling transmission lines

33a, 34a, and 313a all extend and form patterns on this layer.

因此，可以在金属层666所在层上形成长度满足上述所需长度的第一去耦传输线33a、第二去耦传输线34a和第三去耦传输线313a。其中，图12的截面中仅展示了第三去耦传输线313a，而第一去耦传输线33a、第二去耦传输线34a以及四端口网络32因与第三去耦传输线313a同层而未在该截面图中展示。可以理解地，相邻的天线单元10a、20a所对应的馈线之间的直线距离较小时，第一去耦传输线33a、第二去耦传输线34a和第三去耦传输线313a可以形成弯折的图案，以满足长度的要求，如图8-图11所示的第一去耦传输线33a和第二去耦传输线34a均形成弯折的图案。在其他一些实施例中，第一去耦传输线33a、第二去耦传输线34a和第三去耦传输线313a也可以呈弯曲的图案。Therefore, the first decoupling transmission line 33a, the second decoupling transmission line 34a, and the third decoupling transmission line 313a can be formed on the layer where the metal layer 666 is located. Among them, only the third decoupling transmission line 313a is shown in the cross-section of FIG. Shown in cross-section. It is understandable that when the linear distance between the feed lines corresponding to the

adjacent antenna units

10a, 20a is small, the first decoupling transmission line 33a, the second decoupling transmission line 34a, and the third decoupling transmission line 313a may form a bent pattern To meet the length requirement, the first decoupling transmission line 33a and the second decoupling transmission line 34a as shown in FIGS. 8-11 both form a bent pattern. In some other embodiments, the first decoupling transmission line 33a, the second decoupling transmission line 34a, and the third decoupling transmission line 313a may also be in a curved pattern.

一些实施例中，第一去耦传输线33a朝远离所述第二去耦传输线34a的方向弯曲或弯折。第二去耦传输线34a朝远离第一去耦传输线33a的方向弯曲或弯折(如图9所示)。另一些实施例中，第一去耦传输线33a朝远离所述第二去耦传输线34a的方向弯曲或弯折。第二去耦传输线34a的两端部朝所述第三去耦传输线313a的方向延伸，中部朝远离所述第三去耦传输线313a的方向弯曲或弯折(如图10所示)。In some embodiments, the first decoupling transmission line 33a is bent or bent in a direction away from the second decoupling transmission line 34a. The second decoupling transmission line 34a is bent or bent in a direction away from the first decoupling transmission line 33a (as shown in FIG. 9). In other embodiments, the first decoupling transmission line 33a is bent or bent in a direction away from the second decoupling transmission line 34a. Both ends of the second decoupling transmission line 34a extend in the direction of the third decoupling transmission line 313a, and the middle part is bent or bent in a direction away from the third decoupling transmission line 313a (as shown in FIG. 10).

第一去耦网络30和第二去耦网络30’以及连接在他们之间的第一去耦传输线33a、第二去耦传输线34a和第三去耦传输线313a与表层辐射片11a、21a和内层辐射片12a、22a位于不同的层。如图12所示，三端口网络31和四端口网络32以及连接在他们之间的第一去耦传输线33a、第二去耦传输线34a和第三去耦传输线313a设置在天线单元10a、20a的下方，例如第三基板63内。图12所示的第一去耦网络31和第二去耦网络31’以及连接在他们之间的第一去耦传输线33a、第二去耦传输线34a、第三去耦连接线313a与金属层666位于同一层，即，设置在第三基板63的最靠近接地层665的半固化片及其相邻的半固化片之间。可以理解地，在其他一些实施例中，第一去耦网络30和第二去耦网络30’以及连接在他们之间的第一去耦传输线33a、第二去耦传输线34a、第三去耦连接线313a也可以与金属层667或者668同层。第一去耦传输线33a、第二去耦传输线34a和第三去耦连接线313a各自均可以分布在不同的层，例如，第一去耦传输线33a与去耦网络连接的一部分分布与去耦网络相同的层(例如金属层666)，另一部分通过过孔而分布在金属层667所在层；或者，另一部分通过过孔分布在金属层667所在层，或者进一步穿过过孔而分布在金属层668所在层。The first decoupling network 30 and the second decoupling network 30' and the first decoupling transmission line 33a, the second decoupling transmission line 34a, and the third decoupling transmission line 313a connected between them and the surface radiation sheets 11a, 21a and inner The

layer radiating sheets

12a, 22a are located in different layers. As shown in FIG. 12, the three-port network 31 and the four-port network 32, and the first decoupling transmission line 33a, the second decoupling transmission line 34a, and the third decoupling transmission line 313a connected between them are arranged in the

antenna units

10a, 20a. Below, for example, in the third substrate 63. The first decoupling network 31 and the second decoupling network 31' shown in FIG. 12 and the first decoupling transmission line 33a, the second decoupling transmission line 34a, the third decoupling connection line 313a and the metal layer connected between them 666 is located on the same layer, that is, between the prepreg closest to the ground layer 665 of the third substrate 63 and the adjacent prepreg. Understandably, in some other embodiments, the first decoupling network 30 and the second decoupling network 30' and the first decoupling transmission line 33a, the second decoupling transmission line 34a, and the third decoupling network connected between them The connection line 313a may also be in the same layer as the

metal layer

667 or 668. Each of the first decoupling transmission line 33a, the second decoupling transmission line 34a, and the third decoupling connection line 313a may be distributed in different layers. For example, a portion of the first decoupling transmission line 33a and the decoupling network are connected to the distribution and decoupling network. For the same layer (for example, the metal layer 666), another part is distributed on the layer where the metal layer 667 is located through via holes; or, the other part is distributed on the layer where the metal layer 667 is located through via holes, or further distributed on the metal layer through via holes 668 is on the floor.

在一些实施例中，去耦传输线上还可以设置枝节。举例而言，如图9所示的第三去耦传输线313a上设置有朝第二去耦传输线34a凸出的第一枝节351，第一枝节351包括相互连接的第一部和第二部以使其呈L形，其中，第一部垂直第三去耦传输线313,第二部平行所述第三去耦传输线313；第二去耦传输线34a上设置有朝第三去耦传输线313a凸出的第二枝节352,第二枝节352垂直于第二去耦传输线34a。其中，第一枝节351和第二枝节352分别设置在高频和低频的传输零点电流反向的位置，可以将高低频传输零点间的距离拉大，因而可以展宽网络的传输带宽。可以理解地，当采用不同去耦网络时，第一枝节351和第二枝节352的形状、位置和尺寸均可不同，具体根据实际采用的网络的特性进行设置。In some embodiments, stubs may also be provided on the decoupling transmission line. For example, the third decoupling transmission line 313a shown in FIG. 9 is provided with a first stub 351 protruding toward the second decoupling transmission line 34a, and the first stub 351 includes a first part and a second part that are connected to each other. The first part is perpendicular to the third decoupling transmission line 313, and the second part is parallel to the third decoupling transmission line 313; the second decoupling transmission line 34a is provided with a third decoupling transmission line 313a. The protruding second stub 352, the second stub 352 is perpendicular to the second decoupling transmission line 34a. Among them, the first branch 351 and the second branch 352 are respectively arranged at positions where the transmission zero currents of the high frequency and low frequency are reversed, which can increase the distance between the high and low frequency transmission zeros, and thus can broaden the transmission bandwidth of the network. It is understandable that when different decoupling networks are used, the shapes, positions, and sizes of the first branch 351 and the second branch 352 can be different, and the settings are specifically set according to the characteristics of the network actually used.

如图10所示的第三去耦传输线313a上设置背向第二去耦传输线34a的第三枝节353，即，第三枝节353朝远离第二去耦传输线34a的方向延伸。第三枝节353垂直于第三去耦传输线313a，使得第三去耦传输线313a整体呈T型结构。该第三枝节353可以调节阻抗匹配。在其它一些实施例中，枝节可以具有不同的形状和朝向，如图11所示，第三去耦传输线313a上设置有朝第二去耦传输线34a凸出的L型枝节354。枝节的形状和朝向可以根据枝节的作用和网络的特性进行设置。The third decoupling transmission line 313a shown in FIG. 10 is provided with a third stub 353 facing away from the second decoupling transmission line 34a, that is, the third stub 353 extends in a direction away from the second decoupling transmission line 34a. The third branch 353 is perpendicular to the third decoupling transmission line 313a, so that the third decoupling transmission line 313a has a T-shaped structure as a whole. The third branch 353 can adjust impedance matching. In some other embodiments, the branches may have different shapes and orientations. As shown in FIG. 11, the third decoupling transmission line 313a is provided with an L-shaped branch 354 protruding toward the second decoupling transmission line 34a. The shape and orientation of the branches can be set according to the function of the branches and the characteristics of the network.

此外四端口网络32中还包括开路枝节354,图9所示的实施例中，开路枝节354形成在第二传输线322、第三传输线323、第四传输线324和第五传输线325围成的方形的四个角内。开路枝节354是具有自由端的枝节，该自由端在实际应用中不与其他传输线连接，从而不将电流/信号进行传输；而所述的定向耦合器各枝节的两端则在实际应用中会与其他传输线连接，以进行电流/信号的传输。在一些实施例中，开路枝节354可以包括连接线3541和连接在连接线3541末端的方形块3542(如图10所示)。在其他实施例中，所述开路枝节354形状、位置和尺寸均可不同，具体可根据实际采用的网络的特性进行设置。In addition, the four-port network 32 also includes open stubs 354. In the embodiment shown in FIG. 9, the open stubs 354 are formed in a square surrounded by the second transmission line 322, the third transmission line 323, the fourth transmission line 324, and the fifth transmission line 325. Inside the four corners. The open stub 354 is a stub with a free end, and the free end is not connected to other transmission lines in practical applications, so as not to transmit current/signal; while the two ends of each stub of the directional coupler will be connected to other transmission lines in practical applications. Other transmission lines are connected for current/signal transmission. In some embodiments, the open branch 354 may include a connecting line 3541 and a square block 3542 connected at the end of the connecting line 3541 (as shown in FIG. 10). In other embodiments, the shape, position, and size of the open branches 354 can be different, and can be specifically set according to the characteristics of the network actually used.

以上针对两个天线单元10a和20a、第一去耦网络30和第二去耦网络30’以及第一去耦传输线33a、第二去耦传输线34a和第三去耦传输线313a进行了介绍。然而，容易理解的是，还可以为天线单元20a和10b以及天线单元10b和20b同样地设置本申请的去耦结构。可为天线单元20a和10b设置第三去耦网络35和第四去耦网络35’以及连接在第三去耦网络35和第四去耦网络35’之间的第一去耦传输线33’、第二去耦传输线34’和第三去耦传输线313’；该第三去耦网络35可与上述的第一去耦网络31相同或相类似，该第四去耦网络35’可与上述的第二去耦网络31’相同或相类似；第一去耦传输线33a’、第二去耦传输线34a’和第三去耦传输线313a’也可以与上述第一去耦传输线33a、第二去耦传输线34a和第三去耦传输线313a相同或相类似。另外，所述第二去耦网络31’和所述第三去耦网络35可共用部分传输线，例如共用第二去耦网络31’的第一传输线311’、第二传输线312’和第五传输线315’(参见图10)。The two

antenna units

10a and 20a, the first decoupling network 30 and the second decoupling network 30', and the first decoupling transmission line 33a, the second decoupling transmission line 34a and the third decoupling transmission line 313a have been introduced above. However, it is easy to understand that the decoupling structure of the present application can also be provided for the

antenna units

20a and 10b and the

antenna units

10b and 20b in the same way. The

antenna units

20a and 10b may be provided with a third decoupling network 35 and a fourth decoupling network 35', and a first decoupling transmission line 33' connected between the third decoupling network 35 and the fourth decoupling network 35', The second decoupling transmission line 34' and the third decoupling transmission line 313'; the third decoupling network 35 can be the same as or similar to the aforementioned first decoupling network 31, and the fourth decoupling network 35' can be the same as the aforementioned first decoupling network 31. The second decoupling network 31' is the same or similar; the first decoupling transmission line 33a', the second decoupling transmission line 34a' and the third decoupling transmission line 313a' can also be the same as the first decoupling transmission line 33a and the second decoupling The transmission line 34a and the third decoupling transmission line 313a are the same or similar. In addition, the second decoupling network 31' and the third decoupling network 35 may share part of the transmission line, for example, the first transmission line 311', the second transmission line 312', and the fifth transmission line of the second decoupling network 31'. 315' (see Figure 10).

当采用如图8至图11所示的三个以上的天线单元时，这些去耦网络和去耦传输线也可以分布在不同的层。例如，第一去耦网络30和第二去耦网络30’以及连接在他们之间的去耦传输线33a可分布在图12所示的金属层666所在层，而第三去耦网络35和第四去耦网络35’以及连接在第三去耦网络35和第四去耦网络35’之间的去耦传输线33a’可分布在图8所示的金属层667所在层。When more than three antenna units as shown in FIG. 8 to FIG. 11 are used, these decoupling networks and decoupling transmission lines can also be distributed in different layers. For example, the first decoupling network 30 and the second decoupling network 30' and the decoupling transmission line 33a connected between them can be distributed on the metal layer 666 shown in FIG. The four decoupling network 35' and the decoupling transmission line 33a' connected between the third decoupling network 35 and the fourth decoupling network 35' may be distributed on the layer where the metal layer 667 shown in FIG. 8 is located.

参见图13，其是本申请另一实施例的天线装置的示意图。在此实施例的天线装置60中，可将例如手机的中框42的顶端部分通过缝隙44分割为两段，这两段可分别作为第一天线10a和第二天线20a。该中框42中可设置一电路板43，本申请上述的第一去耦网络30和第二去耦网络30’以及第一去耦传输线33a、第二去耦传输线34a和第三去耦传输线313a(参见图4)可布置在该电路板43上。第一馈源40和第二馈源40’可与该电路板43连接，该电路板43又与该第一天线10a和第二天线20a连接。缝隙44通常可非居中设置，例如靠近中框42的左侧或右侧设置。Refer to FIG. 13, which is a schematic diagram of an antenna device according to another embodiment of the present application. In the antenna device 60 of this embodiment, for example, the top portion of the middle frame 42 of the mobile phone can be divided into two sections by the slot 44, and the two sections can be used as the first antenna 10a and the second antenna 20a, respectively. The middle frame 42 can be provided with a circuit board 43, the first decoupling network 30 and the second decoupling network 30', the first decoupling transmission line 33a, the second decoupling transmission line 34a, and the third decoupling transmission line mentioned above in this application 313a (see FIG. 4) may be arranged on the circuit board 43. The first feed source 40 and the second feed source 40' can be connected to the circuit board 43, which in turn is connected to the first antenna 10a and the second antenna 20a. The slit 44 can usually be arranged non-centrally, for example, arranged close to the left side or the right side of the middle frame 42.

本实施例以如图8和图9所示的四元直线阵进行去耦设计作为示例，该四元直线阵的中心工作频率为28GHz。在此指出，根据3GPP TS 38.101协议的规定，处在24.25GHz至52.6GHz之间的频率通常称为毫米波(mm Wave)；因此，本申请提出的去耦结构可为一种毫米波阵列天线去耦结构。在进行去耦设计前，该四元直线阵的反射系数如图14所示。In this embodiment, the decoupling design of the four-element linear array shown in FIG. 8 and FIG. 9 is taken as an example, and the center operating frequency of the four-element linear array is 28 GHz. It is pointed out here that according to the 3GPP TS 38.101 protocol, the frequency between 24.25 GHz and 52.6 GHz is usually called millimeter wave (mm Wave); therefore, the decoupling structure proposed in this application can be a millimeter wave array antenna Decoupling structure. Before the decoupling design, the reflection coefficient of the four-element linear array is shown in Figure 14.

图15为连接去耦网络前后，本申请实施例的天线装置中的天线单元的反射系数的比对曲线。由图15可见：受耦合效应影响，去耦前阵中单元的-10dB工作带宽为26.68GHz～29.78GHz，-6dB工作带宽为25.57GHz～29.94GHz；去耦后-6dB工作带宽为22.74GHz～30.38GHz，工作带宽展宽，显著改善了天线的匹配特性。FIG. 15 is a comparison curve of the reflection coefficient of the antenna unit in the antenna device of the embodiment of the present application before and after connecting the decoupling network. It can be seen from Figure 15 that affected by the coupling effect, the -10dB working bandwidth of the unit in the decoupling front array is 26.68GHz～29.78GHz, and the -6dB working bandwidth is 25.57GHz～29.94GHz; after decoupling, the -6dB working bandwidth is 22.74GHz～ 30.38GHz, the working bandwidth is expanded, which significantly improves the matching characteristics of the antenna.

图16为连接去耦网络前后，本申请实施例的天线装置中的两个天线单元间的耦合强度的比对曲线。由图16可见：在25.3GHz～29.1GHz频段内，耦合系数较之前均有所降低，实现了宽带互耦抑制；在频率25.9GHz处，受耦合效应影响，去耦前天线单元间的耦合系数为-11.5dB，去耦后天线的耦合系数降低了7dB，有效抑制了单元间的耦合效应。16 is a comparison curve of the coupling strength between two antenna units in the antenna device of the embodiment of the present application before and after connecting the decoupling network. It can be seen from Figure 16: In the frequency band of 25.3GHz～29.1GHz, the coupling coefficient is lower than before, achieving broadband mutual coupling suppression; at the frequency of 25.9GHz, affected by the coupling effect, the coupling coefficient between the antenna elements before decoupling It is -11.5dB, and the coupling coefficient of the antenna is reduced by 7dB after decoupling, effectively suppressing the coupling effect between the units.

图17-图19分别为连接去耦网络前后波束扫描至0°、45°与50°时，本申请实施例的天线装置的增益扫频比对曲线。根据图17，波束指向0°时，在24.4GHz～30GHz频率范围内，去耦前后增益基本一致。根据图18，波束指向45°时，在24.4GHz～29.4GHz频率范围内，去耦后增益较去耦前均有所提升，在25.7GHz增益提升最大值为1.24dB。根据图19，波束指向50°时，在24.4GHz～29.4GHz频率范围内,去耦后增益较去耦前均有所提升，在25.8GHz增益提升最大值为1.44dB，显著提升了阵列天线的辐射能力。Figures 17-19 are comparison curves of the gain sweep frequency of the antenna device according to the embodiment of the present application when the beam is scanned to 0°, 45°, and 50° before and after the decoupling network is connected. According to Figure 17, when the beam is pointed at 0°, the gain is basically the same before and after decoupling in the frequency range of 24.4GHz to 30GHz. According to Figure 18, when the beam is pointed at 45°, in the frequency range of 24.4GHz～29.4GHz, the gain after decoupling is improved compared with that before decoupling, and the maximum gain increase at 25.7GHz is 1.24dB. According to Figure 19, when the beam is pointed at 50°, in the frequency range of 24.4GHz～29.4GHz, the gain after decoupling is improved compared with that before decoupling. The maximum gain increase at 25.8GHz is 1.44dB, which significantly improves the array antenna's gain. Radiation ability.

综上所述，本申请的天线装置，在天线单元下方引入去耦网络(五端口网络)的概念，五端口网络则包括逐级设计和逐级连接的三端口网络和四端口网络，三端口网络和四端口网络级联实现去耦和带宽展宽。本申请无需改变阵列天线单元的结构，只需对第一去耦传输线33、第二去耦传输线34和第三去耦传输线313的长度d ₃、d ₄和d ₅以及三端口网络31的S参数和四端口网络32的S参数进行配置，即可调节天线单元10、20之间在第一频段和第二频段的耦合度，即能降低天线单元间的互耦，拓展扫描角，提升扫描增益。另外，还能依据去耦前隔离度的幅度计算出功分器的功分比和定向耦合器的耦合度，再依据公式确定功分器各枝节的特性阻抗，进而确定定向耦合器各枝节的特性阻抗，从而能够计算出对应特性阻抗的传输线的线宽，以便制作出对应的功分器和定向耦合器。基于此方法，可以提高多天线***的隔离度。 To sum up, the antenna device of the present application introduces the concept of a decoupling network (five-port network) under the antenna unit. The five-port network includes a three-port network and a four-port network that are designed and connected step by step. The network and the four-port network are cascaded to achieve decoupling and bandwidth expansion. _{This application does not need to change the structure of the array antenna unit, only the lengths d 3} , d ₄ and d ₅ of the first decoupling transmission line 33, the second decoupling transmission line 34 and the third decoupling transmission line 313 and the S of the three-port network 31 Configure the parameters and the S parameters of the four-port network 32 to adjust the coupling between the

antenna units

10 and 20 in the first frequency band and the second frequency band, that is, to reduce the mutual coupling between the antenna units, expand the scanning angle, and improve the scanning Gain. In addition, the power split ratio of the power splitter and the coupling degree of the directional coupler can be calculated according to the magnitude of the isolation before decoupling, and then the characteristic impedance of each branch of the power splitter can be determined according to the formula, and then the characteristic impedance of each branch of the directional coupler can be determined. Characteristic impedance, which can calculate the line width of the transmission line corresponding to the characteristic impedance, so as to make the corresponding power divider and directional coupler. Based on this method, the isolation of the multi-antenna system can be improved.

以上所述仅为本申请的实施例，并非因此限制本申请的专利范围，凡是利用本申请说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本申请的专利保护范围内。The above are only examples of this application, and do not limit the scope of this application. Any equivalent structure or equivalent process transformation made using the content of the description and drawings of this application, or directly or indirectly applied to other related technologies In the same way, all fields are included in the scope of patent protection of this application.

Claims

一种天线装置，其特征在于，包括：An antenna device, characterized in that it comprises:

多个间隔设置的天线单元；Multiple antenna units arranged at intervals;

多个去耦网络，与所述多个天线单元一一对应，其中，每个所述去耦网络均具有输入端口、输出端口、第一连接端口、第二连接端口和第三连接端口；所述输出端口与对应的天线单元之间连接，所述输入端口用于与射频芯片连接；A plurality of decoupling networks corresponding to the plurality of antenna units one-to-one, wherein each of the decoupling networks has an input port, an output port, a first connection port, a second connection port, and a third connection port; The output port is connected to the corresponding antenna unit, and the input port is used to connect to a radio frequency chip;

第一去耦传输线，连接在相邻的所述去耦网络的第一连接端口之间；The first decoupling transmission line is connected between the first connection ports of the adjacent decoupling networks;

第二去耦传输线，连接在相邻的所述去耦网络的第二连接端口之间；以及The second decoupling transmission line is connected between the second connection ports of the adjacent decoupling networks; and

第三去耦传输线，连接在相邻的所述去耦网络的第三连接端口之间。The third decoupling transmission line is connected between the third connection ports of the adjacent decoupling networks.
根据权利要求1所述的天线装置，其特征在于，每个所述去耦网络均包括相互连接的三端口网络和四端口网络；The antenna device according to claim 1, wherein each of the decoupling networks includes a three-port network and a four-port network connected to each other;

所述三端口网络包括第一传输线和第二传输线；所述第一传输线的一端形成所述输入端口，所述第一传输线的另一端与所述第二传输线的一端连接，并在连接处形成所述第三连接端口，所述第二传输线的另一端与所述四端口网络连接。The three-port network includes a first transmission line and a second transmission line; one end of the first transmission line forms the input port, the other end of the first transmission line is connected to one end of the second transmission line, and is formed at a connection point For the third connection port, the other end of the second transmission line is connected to the four-port network.
根据权利要求2所述的天线装置，其特征在于，相邻的所述天线单元之间在第一频段的耦合度根据所述第三去耦传输线的长度和所述天线单元对应的去耦网络中的三端口网络的散射参数来确定。The antenna device according to claim 2, wherein the degree of coupling between the adjacent antenna units in the first frequency band is based on the length of the third decoupling transmission line and the decoupling network corresponding to the antenna unit The scattering parameters of the three-port network are determined.
根据权利要求2所述的天线装置，其特征在于，相邻的所述天线单元之间在第一频段的耦合度与所述第三去耦传输线的长度和所述天线单元对应的所述去耦网络中的三端口网络的散射参数之间满足以下关系：The antenna device according to claim 2, wherein the degree of coupling between the adjacent antenna elements in the first frequency band is equal to the length of the third decoupling transmission line and the corresponding decoupling of the antenna elements. The scattering parameters of the three-port network in the coupling network satisfy the following relationship:

其中，S’ ₁₂为相邻的所述天线单元之间的初始隔离度的强度，所述初始隔离度为相邻的所述天线单元未连接所述去耦网络时的隔离度；S ₁₆、S ₁₅为所述三端口网络的散射参数；d ₅为所述第三去耦传输线的长度，k为波数，e为自然常数，j为虚数的表示符号。 Wherein, S _'12 as the initial strength of the isolation between adjacent antenna elements, the initial isolation of the adjacent unit is not connected to the antenna isolation during the decoupling network; S _16, S ₁₅ is the scattering parameter of the three-port network; d ₅ is the length of the third decoupling transmission line, k is the wave number, e is the natural constant, and j is the symbol of the imaginary number.
根据权利要求2所述的天线装置，其特征在于，定义相邻的所述天线单元未连接所述去耦网络时的隔离度为初始隔离度；The antenna device according to claim 2, wherein the isolation degree when the adjacent antenna unit is not connected to the decoupling network is defined as the initial isolation degree;

所述第一传输线、所述第二传输线和所述第三去耦传输线形成功分器；The first transmission line, the second transmission line and the third decoupling transmission line-shaped success splitter;

所述功分器的功分比与所述初始隔离度的强度，以及所述第三去耦传输线的长度与所述初始隔离度的相位满足以下关系：The power division ratio of the power divider and the strength of the initial isolation, and the length of the third decoupling transmission line and the phase of the initial isolation satisfy the following relationship:

其中，S’ ₁₂为所述初始隔离度的强度；S ₁₅和S ₁₆为所述天线单元对应的去耦网络中的三端口网络的散射参数；
为所述功分比；φ' ₁₂为所述初始隔离度的相位；d ₅为去耦传输线的长度，k为波数。 Wherein, S _'12 to the intensity of the initial isolation; S ₁₅ and S ₁₆ is the scattering parameter of the antenna element corresponding to the decoupling network three-port network;
Said power divider ratio; φ _'12 are the phase of initial isolation; d ₅ decoupling the transmission line length, k is the wave number.
根据权利要求2所述的天线装置，其特征在于，所述四端口网络为定向耦合器，所述定向耦合器包括：The antenna device according to claim 2, wherein the four-port network is a directional coupler, and the directional coupler comprises:

定向耦合器主体，和The main body of the directional coupler, and

四条传输线，连接在所述定向耦合器主体上；其中，所述定向耦合器与所述三端口网络共用所述第二传输线；所述四条传输线包括所述第二传输线、第三传输线、第四传输线和第五传输线；所述第三传输线的一端连接所述定向耦合器主体，另一端形成所述输出端口；所述第四传输线的一端连接所述定向耦合器主体，另一端形成所述第一连接端口；所述第五传输线的一端连接所述定向耦合器主体，另一端形成所述第二连接端口。Four transmission lines are connected to the main body of the directional coupler; wherein, the directional coupler and the three-port network share the second transmission line; the four transmission lines include the second transmission line, the third transmission line, and the fourth transmission line. A transmission line and a fifth transmission line; one end of the third transmission line is connected to the directional coupler main body, and the other end forms the output port; one end of the fourth transmission line is connected to the directional coupler main body, and the other end forms the first A connection port; one end of the fifth transmission line is connected to the directional coupler main body, and the other end forms the second connection port.
根据权利要求6所述的天线装置，其特征在于，相邻的所述天线单元之间在第二频段的耦合度根据所述第一去耦传输线的第一长度、所述第二去耦传输线的第二长度以及所述相邻的去耦网络的散射参数来确定。The antenna device according to claim 6, wherein the degree of coupling between the adjacent antenna elements in the second frequency band is based on the first length of the first decoupling transmission line and the second decoupling transmission line The second length of and the scattering parameters of the adjacent decoupling network are determined.
根据权利要求6所述的天线装置，其特征在于，所述定向耦合器主体包括首尾顺次连接的第六传输线、第七传输线、第八传输线和第九传输线以围成方形。7. The antenna device according to claim 6, wherein the main body of the directional coupler comprises a sixth transmission line, a seventh transmission line, an eighth transmission line, and a ninth transmission line that are sequentially connected end to end to form a square.
根据权利要求8所述的天线装置，其特征在于，定义所述四端口网络的耦合度为D，定义相邻的所述天线单元之间未连接所述去耦网络时的隔离度的强度为S’ ₁₂，这些参数之间满足以下关系： The antenna device according to claim 8, wherein the coupling degree of the four-port network is defined as D, and the isolation strength when the decoupling network is not connected between adjacent antenna units is defined as S _'12, the relationship between these parameters satisfy the following:
根据权利要求9所述的天线装置，其特征在于，所述第六传输线和所述第八传输线的特性阻抗为Z ₁，所述第七传输线和所述第九传输线的特性阻抗为Z ₂，所述第一去耦传输线和所述第二去耦传输线的特性阻抗均为Z ₀；其中，所述四端口网络的耦合度D与Z ₀、Z ₁和Z ₂满足以下关系： The antenna device according to claim 9, wherein the characteristic impedance of the sixth transmission line and the eighth transmission line is Z ₁ , and the characteristic impedance of the seventh transmission line and the ninth transmission line is Z ₂ , The characteristic impedances of the first decoupling transmission line and the second decoupling transmission line are both Z ₀ ; wherein the coupling degree D of the four-port network and Z ₀ , Z ₁ and Z ₂ satisfy the following relationship:

其中，h为阻抗变换因子。Among them, h is the impedance transformation factor.
根据权利要求1所述的天线装置，其特征在于，还包括依次叠层设置的第一基板、第二基板、接地层以及第三基板；所述多个天线单元设置在所述第一基板上；所述多个去耦网络设置在所述第三基板内。The antenna device of claim 1, further comprising a first substrate, a second substrate, a ground layer, and a third substrate that are sequentially stacked; the plurality of antenna units are provided on the first substrate ; The plurality of decoupling networks are arranged in the third substrate.
根据权利要求11所述的天线装置，其特征在于，所述第三基板为多层结构，所述去耦网络设置在所述第三基板的一层上；所述第一去耦传输线、所述第二去耦传输线和所述第三去耦传输线均设置在该层上。The antenna device according to claim 11, wherein the third substrate has a multilayer structure, and the decoupling network is provided on a layer of the third substrate; the first decoupling transmission line, the The second decoupling transmission line and the third decoupling transmission line are both arranged on this layer.
根据权利要求12所述的天线装置，其特征在于，所述第一去耦传输线朝远离所述第二去耦传输线的方向弯曲或弯折；所述第二去耦传输线朝远离所述第一去耦传输线的方向弯曲或弯折。The antenna device according to claim 12, wherein the first decoupling transmission line is bent or bent in a direction away from the second decoupling transmission line; and the second decoupling transmission line is facing away from the first decoupling transmission line. The direction of the decoupling transmission line is bent or bent.
根据权利要求13所述的天线装置，其特征在于，所述第三去耦传输线上设置有朝向所述第二去耦传输线的第一枝节，所述第一枝节包括相互连接的第一部和第二部，所述第一部垂直于所述第三去耦传输线，所述第二部平行所述第三去耦传输线；The antenna device according to claim 13, wherein the third decoupling transmission line is provided with a first stub facing the second decoupling transmission line, and the first stub includes first stubs connected to each other. Part and a second part, the first part is perpendicular to the third decoupling transmission line, and the second part is parallel to the third decoupling transmission line;

所述第二去耦传输线上设置有朝向所述第三去耦传输线的第二枝节，所述第二枝节垂直于所述第二去耦传输线。The second decoupling transmission line is provided with a second stub facing the third decoupling transmission line, and the second stub is perpendicular to the second decoupling transmission line.
根据权利要求12所述的天线装置，其特征在于，所述第一去耦传输线朝远离所述第二去耦传输线的方向弯曲或弯折；所述第二去耦传输线的两端部朝所述第三去耦传输线的方向延伸，中部朝远离所述第三去耦传输线的方向弯曲或弯折。The antenna device according to claim 12, wherein the first decoupling transmission line is bent or bent in a direction away from the second decoupling transmission line; both ends of the second decoupling transmission line face toward the The third decoupling transmission line extends in the direction, and the middle portion is bent or bent in a direction away from the third decoupling transmission line.
根据权利要求15所述的天线装置，其特征在于，所述第三去耦传输线上设置有背向所述第二去耦传输线的第三枝节，所述第三枝节垂直于所述第三去耦传输线。The antenna device according to claim 15, wherein the third decoupling transmission line is provided with a third stub that faces away from the second decoupling transmission line, and the third stub is perpendicular to the first decoupling transmission line. Three decoupling transmission lines.
根据权利要求11所述的天线装置，其特征在于，每个天线单元均包括相互隔离且对应设置的表层辐射片和内层辐射片，所述表层辐射片设置在所述第一基板远离所述第二基板的表面，所述内层辐射片设置在所述第一基板靠近所述第二基板的表面。The antenna device according to claim 11, wherein each antenna unit comprises a surface radiation sheet and an inner radiation sheet that are isolated from each other and arranged correspondingly, and the surface radiation sheet is arranged on the first substrate away from the On the surface of the second substrate, the inner layer radiating sheet is arranged on the surface of the first substrate close to the second substrate.
根据权利要求1所述的天线装置，其特征在于，所述多个天线单元具有相同的辐射特性；所述多个去耦网络配置为具有相同的散射参数。The antenna device according to claim 1, wherein the multiple antenna elements have the same radiation characteristics; and the multiple decoupling networks are configured to have the same scattering parameters.
一种电子设备，其特征在于，包括：An electronic device, characterized in that it comprises:

壳体，case,

显示屏组件，与所述壳体连接，并与所述壳体形成容置空间；The display screen assembly is connected to the housing and forms an accommodation space with the housing;

射频芯片，设置在所述容置空间内；以及The radio frequency chip is arranged in the accommodating space; and

天线装置，至少部分设置在所述容置空间内，所述天线装置包括：The antenna device is at least partially arranged in the accommodating space, and the antenna device includes:

多个间隔设置的天线单元；Multiple antenna units arranged at intervals;

多个去耦网络，与所述多个天线单元一一对应，其中，每个去耦网络均具有输入端口、输出端口、第一连接端口、第二连接端口和第三连接端口；所述输出端口与对应的天线单元连接，所述输入端口用于与所述射频芯片连接；A plurality of decoupling networks correspond to the plurality of antenna units one-to-one, wherein each decoupling network has an input port, an output port, a first connection port, a second connection port, and a third connection port; the output The port is connected to the corresponding antenna unit, and the input port is used to connect to the radio frequency chip;

第一去耦传输线，连接在相邻的所述去耦网络的第一连接端口之间；The first decoupling transmission line is connected between the first connection ports of the adjacent decoupling networks;

第二去耦传输线，连接在相邻的所述去耦网络的第二连接端口之间；以及The second decoupling transmission line is connected between the second connection ports of the adjacent decoupling networks; and

第三去耦传输线，连接在相邻的所述去耦网络的第三连接端口之间。The third decoupling transmission line is connected between the third connection ports of the adjacent decoupling networks.
根据权利要求19所述的电子设备，其特征在于，所述天线装置还包括依次叠层设置的第一基板、第二基板、接地层以及第三基板；所述多个天线单元设置在所述第一基板上；所述多个去耦网络设置在所述第三基板内；所述射频芯片设置在所述第三基板远离所述接地层的一侧。The electronic device according to claim 19, wherein the antenna device further comprises a first substrate, a second substrate, a ground layer, and a third substrate that are sequentially stacked; the plurality of antenna units are provided on the On the first substrate; the plurality of decoupling networks are arranged in the third substrate; the radio frequency chip is arranged on a side of the third substrate away from the ground layer.