CN106486760B - Terminal antenna and terminal based on metal backshell - Google Patents

Terminal antenna and terminal based on metal backshell Download PDF

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Publication number
CN106486760B
CN106486760B CN201610863634.9A CN201610863634A CN106486760B CN 106486760 B CN106486760 B CN 106486760B CN 201610863634 A CN201610863634 A CN 201610863634A CN 106486760 B CN106486760 B CN 106486760B
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Prior art keywords
metal
antenna
point
metal frame
rear shell
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CN201610863634.9A
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CN106486760A (en
Inventor
李鹏鹏
陈龙
张昌顺
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Zhejiang Fengze Technology Co., Ltd
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Zhejiang Fengze Technology Co Ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/44—Details of, or arrangements associated with, antennas using equipment having another main function to serve additionally as an antenna, e.g. means for giving an antenna an aesthetic aspect
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/48—Earthing means; Earth screens; Counterpoises
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/30—Arrangements for providing operation on different wavebands
    • H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
    • H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
    • H01Q5/328—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors between a radiating element and ground
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/50—Feeding or matching arrangements for broad-band or multi-band operation
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/04—Metal casings

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Telephone Set Structure (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

A terminal antenna and terminal based on metal backshell includes: the antenna comprises a metal rear shell, a metal front shell and a metal rear shell, wherein one end of the metal rear shell is provided with a gap, and the metal rear shell is divided into a bottom metal frame and a back metal plate by the gap, wherein the bottom metal frame is used as an antenna radiation unit, and the back metal plate is used as the ground; the conductive medium is arranged on the side edge or the top of the metal frame of the metal rear shell; at least one point on the conductive medium is coupled or shorted with the bottom metal frame; a grounding element connected to the back metal plate; the antenna comprises a feed matching network and a feed point, wherein the feed matching network is fed into the antenna radiation unit through the feed point. The gap of the embodiment of the invention is very close to the bottom end of the metal frame, so that the common three-section design is very close to the all-metal integrated design, and the conductive medium is arranged on the side edge or the top of the metal frame of the metal rear shell to extend the coverage frequency band of the antenna, so that the antenna frequency band range is larger.

Description

Terminal antenna and terminal based on metal backshell
Technical Field
The invention relates to an antenna technology, in particular to a terminal antenna based on a metal rear shell and a terminal.
Background
With the rapid development of the fourth generation (4G, 4th generation) communication technology, the current mobile terminals also increasingly support 4G networks, such as Long Term Evolution (LTE) networks, which requires the antenna to have a wider bandwidth to meet the user's requirements. On the other hand, with the further popularization of 4G terminals, the homogeneity of mobile phones is more and more serious, and people have higher and higher requirements on mobile phones, such as: body texture, user internet experience, and the like. Therefore, a plurality of mobile phone manufacturers have introduced metal models, and the all-metal integrated mobile phone is popular with consumers due to beauty and fashion. All-metal mobile phones improve the texture and the grade of the mobile phones, reduce the performance of the antenna because the metal has natural signal shielding characteristics, and meet the 4G standard without influencing the user experience, so that great challenge is brought to the antenna design.
In order to not affect the performance of the antenna, the performance of the antenna can be realized through the metal rear shell slot, but the slot is too much to affect the beauty, the three-section type all-metal rear shell becomes the trend of designing the smart phone, the proportion of the upper section metal and the lower section metal is the focus of the angular force of each mobile phone manufacturer, but in terms of the current popular mobile phone style in the market, the upper section metal and the lower section metal are still too wide, the width is usually between 5mm and 15mm, so that the non-conductive plastic area at the broken seam is obvious, and the appearance of the mobile phone is seriously affected.
Disclosure of Invention
In order to solve the above problems, embodiments of the present invention provide a terminal antenna and a terminal based on a metal back shell, which can reduce the width of a metal back shell occupied by an antenna radiation unit, so that the metal back shell of the terminal is close to an all-metal integrated design.
In order to achieve the above object, an embodiment of the present invention provides a terminal antenna based on a metal back shell, where the antenna includes:
the antenna comprises a metal rear shell, a metal front shell and a metal rear shell, wherein one end of the metal rear shell is provided with a gap, and the metal rear shell is divided into a bottom metal frame and a back metal plate by the gap, wherein the bottom metal frame is used as an antenna radiation unit, and the back metal plate is used as the ground;
the conductive medium is arranged on the side edge or the top of the metal frame of the metal rear shell; at least one point on the conductive medium is coupled or shorted with the bottom metal frame;
a grounding element connected to the back metal plate;
the antenna comprises a feed matching network and a feed point, wherein the feed matching network is fed into the antenna radiation unit through the feed point.
Optionally, the conductive medium is a metal sheet or a metal sheet embedded in the leather sheath or a metal coating embedded in the leather sheath.
Optionally, the distance between the coupling point and the bottom metal frame is 0.1 mm-3 mm;
and the coupling point is a point on the conductive medium coupled with the bottom metal frame.
Optionally, the distance between the other points on the conductive medium except the coupling point and the short-circuit point and the bottom metal frame is greater than or equal to 0.5 mm;
wherein the coupling point is a point on the conductive medium coupled with the bottom metal frame; the short-circuit point is a point on the conductive medium and is in short circuit with the bottom metal frame.
Optionally, one point on the conductive medium is coupled or shorted with the bottom metal frame.
Optionally, a coupling point or a short-circuit point is located between the right end of the slot and the ground element;
wherein the coupling point is a point on the conductive medium coupled with the bottom metal frame; the short-circuit point is a point on the conductive medium and is in short circuit with the bottom metal frame.
Optionally, the antenna further includes:
a switching element connecting the antenna radiation unit and the back metal plate.
Optionally, a coupling point or a shorting point is located between the feeding point and the switching element;
wherein the coupling point is a point on the conductive medium coupled with the bottom metal frame; the short-circuit point is a point on the conductive medium and is in short circuit with the bottom metal frame.
Optionally, when the switch element is in a connected state, the antenna radiation unit operates in a first frequency band and a second frequency band by adjusting circuit parameters of the feed matching network, and a frequency of the first frequency band is higher than a frequency of the second frequency band.
Optionally, when the switch element is in an off state, the antenna radiation unit operates in a third frequency band by adjusting circuit parameters of the feed matching network, and a frequency of the third frequency band is lower than the first frequency band and the second frequency band.
Optionally, the area occupied by the gap is a non-conductive area.
The terminal provided by the embodiment of the invention comprises: a terminal antenna based on a metal rear shell; wherein the antenna comprises:
the antenna comprises a metal rear shell, a first end of the metal rear shell is provided with a gap, and the metal rear shell is divided into a bottom metal frame and a back metal plate by the gap, wherein the bottom metal frame is used as an antenna radiation unit, and the back metal plate is used as the ground;
the conductive medium is arranged on the side edge or the top of the metal frame of the metal rear shell; at least one point on the conductive medium is coupled or shorted with the bottom metal frame;
a grounding element connected to the back metal plate;
the antenna comprises a feed matching network and a feed point, wherein the feed matching network is fed into the antenna radiation unit through the feed point.
Optionally, the conductive medium is a metal sheet or a metal sheet embedded in the leather sheath or a metal coating embedded in the leather sheath.
Optionally, the distance between the coupling point and the bottom metal frame is 0.1 mm-3 mm;
and the coupling point is a point on the conductive medium coupled with the bottom metal frame.
Optionally, the distance between the other points on the conductive medium except the coupling point and the short-circuit point and the bottom metal frame is greater than or equal to 0.5 mm;
wherein the coupling point is a point on the conductive medium coupled with the bottom metal frame; the short-circuit point is a point on the conductive medium and is in short circuit with the bottom metal frame.
Optionally, one point on the conductive medium is coupled or shorted with the bottom metal frame.
Optionally, a coupling point or a short-circuit point is located between the right end of the slot and the ground element;
wherein the coupling point is a point on the conductive medium coupled with the bottom metal frame; the short-circuit point is a point on the conductive medium and is in short circuit with the bottom metal frame.
Optionally, the antenna further includes:
a switching element connecting the antenna radiation unit and the back metal plate.
Optionally, when the switch element is in a connected state, the antenna radiation unit operates in a first frequency band and a second frequency band by adjusting circuit parameters of the feed matching network, and a frequency of the first frequency band is higher than a frequency of the second frequency band.
Optionally, a coupling point or a shorting point is located between the feeding point and the switching element;
wherein the coupling point is a point on the conductive medium coupled with the bottom metal frame; the short-circuit point is a point on the conductive medium and is in short circuit with the bottom metal frame.
Optionally, when the switch element is in an off state, the antenna radiation unit operates in a third frequency band by adjusting circuit parameters of the feed matching network, and a frequency of the third frequency band is lower than the first frequency band and the second frequency band.
Optionally, the area occupied by the gap is a non-conductive area.
In the technical scheme of the embodiment of the invention, the terminal antenna based on the metal rear shell comprises: the antenna comprises a metal rear shell, a metal front shell and a metal rear shell, wherein one end of the metal rear shell is provided with a gap, and the metal rear shell is divided into a bottom metal frame and a back metal plate by the gap, wherein the bottom metal frame is used as an antenna radiation unit, and the back metal plate is used as the ground; the conductive medium is arranged on the side edge or the top of the metal frame of the metal rear shell; at least one point on the conductive medium is coupled or shorted with the bottom metal frame; a grounding element connected to the back metal plate; the antenna comprises a feed matching network and a feed point, wherein the feed matching network is fed into the antenna radiation unit through the feed point. The gap of the embodiment of the invention is very close to the bottom end of the metal frame, so that the common three-section design is very close to the all-metal integrated design. The antenna area is smaller, the occupied ratio of a clearance area is reduced, the occupied ratio of a screen is greatly increased, and the visual experience is better. The metal plate at the back accounts for up to 95%, and the metal touch feeling is excellent, and the heat-conducting property is excellent. The metal body is ultra-thin. In addition, the antenna is simple in structure, integrated with the rear shell, convenient to process and produce, and conductive media are arranged on the side edge or the top of the metal frame of the metal rear shell to extend the coverage frequency band of the antenna, so that the antenna frequency band range is larger.
Drawings
The accompanying drawings in the embodiments of the present invention are described below, and the drawings in the embodiments are provided for further understanding of the present invention, and together with the description serve to explain the present invention without limiting the scope of the present invention.
Fig. 1 is a schematic diagram of a hardware structure of a mobile terminal implementing various embodiments of the present invention;
FIG. 2 is a diagram of a wireless communication system for the mobile terminal shown in FIG. 1;
fig. 3 is a schematic diagram of a terminal antenna based on a metal rear shell according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a terminal according to an embodiment of the invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The following further description of the present invention, in order to facilitate understanding of those skilled in the art, is provided in conjunction with the accompanying drawings and is not intended to limit the scope of the present invention. In the present application, the embodiments and various aspects of the embodiments may be combined with each other without conflict.
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
A mobile terminal implementing various embodiments of the present invention will now be described with reference to the accompanying drawings. In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for facilitating the explanation of the present invention, and have no specific meaning in themselves. Thus, "module" and "component" may be used in a mixture.
The mobile terminal may be implemented in various forms. For example, the terminal described in the present invention may include a mobile terminal such as a mobile phone, a smart phone, a notebook computer, a digital broadcast receiver, a PDA (personal digital assistant), a PAD (tablet computer), a PMP (portable multimedia player), a navigation device, and the like, and a stationary terminal such as a digital TV, a desktop computer, and the like. In the following, it is assumed that the terminal is a mobile terminal. However, it will be understood by those skilled in the art that the configuration according to the embodiment of the present invention can be applied to a fixed type terminal in addition to elements particularly used for moving purposes.
Fig. 1 is a schematic hardware configuration of a mobile terminal implementing various embodiments of the present invention.
The mobile terminal 100 may include a wireless communication unit 110, an a/V (audio/video) input unit 120, a user input unit 130, a sensing unit 140, an output unit 150, a memory 160, an interface unit 170, a controller 180, and a power supply unit 190, etc. Fig. 1 illustrates a mobile terminal having various components, but it is to be understood that not all illustrated components are required to be implemented. More or fewer components may alternatively be implemented. Elements of the mobile terminal will be described in detail below.
The wireless communication unit 110 typically includes one or more components that allow radio communication between the mobile terminal 100 and a wireless communication system or network. For example, the wireless communication unit may include at least one of a broadcast receiving module 111, a mobile communication module 112, a wireless internet module 113, a short-range communication module 114, and a location information module 115.
The broadcast receiving module 111 receives a broadcast signal and/or broadcast associated information from an external broadcast management server via a broadcast channel. The broadcast channel may be in packetsIncluding satellite channels and/or terrestrial channels. The broadcast management server may be a server that generates and transmits a broadcast signal and/or broadcast associated information or a server that receives a previously generated broadcast signal and/or broadcast associated information and transmits it to a terminal. The broadcast signal may include a TV broadcast signal, a radio broadcast signal, a data broadcast signal, and the like. Also, the broadcast signal may further include a broadcast signal combined with a TV or radio broadcast signal. The broadcast associated information may also be provided via a mobile communication network, and in this case, the broadcast associated information may be received by the mobile communication module 112. The broadcast signal may exist in various forms, for example, it may exist in the form of an Electronic Program Guide (EPG) of Digital Multimedia Broadcasting (DMB), an Electronic Service Guide (ESG) of digital video broadcasting-handheld (DVB-H), and the like. The broadcast receiving module 111 may receive a signal broadcast by using various types of broadcasting systems. In particular, the broadcast receiving module 111 may receive a broadcast signal by using a signal such as multimedia broadcasting-terrestrial (DMB-T), digital multimedia broadcasting-satellite (DMB-S), digital video broadcasting-handheld (DVB-H), forward link media (MediaFLO)@) A digital broadcasting system of a terrestrial digital broadcasting integrated service (ISDB-T), etc. receives digital broadcasting. The broadcast receiving module 111 may be constructed to be suitable for various broadcasting systems that provide broadcast signals as well as the above-mentioned digital broadcasting systems. The broadcast signal and/or broadcast associated information received via the broadcast receiving module 111 may be stored in the memory 160 (or other type of storage medium).
The mobile communication module 112 transmits and/or receives radio signals to and/or from at least one of a base station (e.g., access point, node B, etc.), an external terminal, and a server. Such radio signals may include voice call signals, video call signals, or various types of data transmitted and/or received according to text and/or multimedia messages.
The wireless internet module 113 supports wireless internet access of the mobile terminal. The module may be internally or externally coupled to the terminal. The wireless internet access technology to which the module relates may include WLAN (wireless LAN) (Wi-Fi), Wibro (wireless broadband), Wimax (worldwide interoperability for microwave access), HSDPA (high speed downlink packet access), and the like.
The short-range communication module 114 is a module for supporting short-range communication. Some examples of short-range communication technologies include bluetoothTMRadio Frequency Identification (RFID), infrared data association (IrDA), Ultra Wideband (UWB), zigbeeTMAnd so on.
The location information module 115 is a module for checking or acquiring location information of the mobile terminal. A typical example of the location information module is a GPS (global positioning system). According to the current technology, the GPS module 115 calculates distance information and accurate time information from three or more satellites and applies triangulation to the calculated information, thereby accurately calculating three-dimensional current location information according to longitude, latitude, and altitude. Currently, a method for calculating position and time information uses three satellites and corrects an error of the calculated position and time information by using another satellite. In addition, the GPS module 115 can calculate speed information by continuously calculating current position information in real time.
The a/V input unit 120 is used to receive an audio or video signal. The a/V input unit 120 may include a camera 121 and a microphone 1220, and the camera 121 processes image data of still pictures or video obtained by an image capturing apparatus in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 151. The image frames processed by the camera 121 may be stored in the memory 160 (or other storage medium) or transmitted via the wireless communication unit 110, and two or more cameras 1210 may be provided according to the construction of the mobile terminal. The microphone 122 may receive sounds (audio data) via the microphone in a phone call mode, a recording mode, a voice recognition mode, or the like, and can process such sounds into audio data. The processed audio (voice) data may be converted into a format output transmittable to a mobile communication base station via the mobile communication module 112 in case of a phone call mode. The microphone 122 may implement various types of noise cancellation (or suppression) algorithms to cancel (or suppress) noise or interference generated in the course of receiving and transmitting audio signals.
The user input unit 130 may generate key input data according to a command input by a user to control various operations of the mobile terminal. The user input unit 130 allows a user to input various types of information, and may include a keyboard, dome sheet, touch pad (e.g., a touch-sensitive member that detects changes in resistance, pressure, capacitance, and the like due to being touched), scroll wheel, joystick, and the like. In particular, when the touch pad is superimposed on the display unit 151 in the form of a layer, a touch screen may be formed.
The sensing unit 140 detects a current state of the mobile terminal 100 (e.g., an open or closed state of the mobile terminal 100), a position of the mobile terminal 100, presence or absence of contact (i.e., touch input) by a user with the mobile terminal 100, an orientation of the mobile terminal 100, acceleration or deceleration movement and direction of the mobile terminal 100, and the like, and generates a command or signal for controlling an operation of the mobile terminal 100. For example, when the mobile terminal 100 is implemented as a slide-type mobile phone, the sensing unit 140 may sense whether the slide-type phone is opened or closed. In addition, the sensing unit 140 can detect whether the power supply unit 190 supplies power or whether the interface unit 170 is coupled with an external device. The sensing unit 140 may include a proximity sensor 1410 as will be described below in connection with a touch screen.
The interface unit 170 serves as an interface through which at least one external device is connected to the mobile terminal 100. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The identification module may store various information for authenticating a user using the mobile terminal 100 and may include a User Identity Module (UIM), a Subscriber Identity Module (SIM), a Universal Subscriber Identity Module (USIM), and the like. In addition, a device having an identification module (hereinafter, referred to as an "identification device") may take the form of a smart card, and thus, the identification device may be connected with the mobile terminal 100 via a port or other connection means. The interface unit 170 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the mobile terminal 100 or may be used to transmit data between the mobile terminal and the external device.
In addition, when the mobile terminal 100 is connected with an external cradle, the interface unit 170 may serve as a path through which power is supplied from the cradle to the mobile terminal 100 or may serve as a path through which various command signals input from the cradle are transmitted to the mobile terminal. Various command signals or power input from the cradle may be used as signals for recognizing whether the mobile terminal is accurately mounted on the cradle. The output unit 150 is configured to provide output signals (e.g., audio signals, video signals, alarm signals, vibration signals, etc.) in a visual, audio, and/or tactile manner. The output unit 150 may include a display unit 151, an audio output module 152, an alarm unit 153, and the like.
The display unit 151 may display information processed in the mobile terminal 100. For example, when the mobile terminal 100 is in a phone call mode, the display unit 151 may display a User Interface (UI) or a Graphical User Interface (GUI) related to a call or other communication (e.g., text messaging, multimedia file downloading, etc.). When the mobile terminal 100 is in a video call mode or an image capturing mode, the display unit 151 may display a captured image and/or a received image, a UI or GUI showing a video or an image and related functions, and the like.
Meanwhile, when the display unit 151 and the touch pad are overlapped with each other in the form of a layer to form a touch screen, the display unit 151 may serve as an input device and an output device. The display unit 151 may include at least one of a Liquid Crystal Display (LCD), a thin film transistor LCD (TFT-LCD), an Organic Light Emitting Diode (OLED) display, a flexible display, a three-dimensional (3D) display, and the like. Some of these displays may be configured to be transparent to allow a user to view from the outside, which may be referred to as transparent displays, and a typical transparent display may be, for example, a TOLED (transparent organic light emitting diode) display or the like. Depending on the particular desired implementation, the mobile terminal 100 may include two or more display units (or other display devices), for example, the mobile terminal may include an external display unit (not shown) and an internal display unit (not shown). The touch screen may be used to detect a touch input pressure as well as a touch input position and a touch input area.
The audio output module 152 may convert audio data received by the wireless communication unit 110 or stored in the memory 160 into an audio signal and output as sound when the mobile terminal is in a call signal reception mode, a call mode, a recording mode, a voice recognition mode, a broadcast reception mode, or the like. Also, the audio output module 152 may provide audio output related to a specific function performed by the mobile terminal 100 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output module 152 may include a speaker, a buzzer, and the like.
The alarm unit 153 may provide an output to notify the mobile terminal 100 of the occurrence of an event. Typical events may include call reception, message reception, key signal input, touch input, and the like. In addition to audio or video output, the alarm unit 153 may provide output in different ways to notify the occurrence of an event. For example, the alarm unit 153 may provide an output in the form of vibration, and when a call, a message, or some other incoming communication (incomingmunication) is received, the alarm unit 153 may provide a tactile output (i.e., vibration) to inform the user thereof. By providing such a tactile output, the user can recognize the occurrence of various events even when the user's mobile phone is in the user's pocket. The alarm unit 153 may also provide an output notifying the occurrence of an event via the display unit 151 or the audio output module 152.
The memory 160 may store software programs and the like for processing and controlling operations performed by the controller 180, or may temporarily store data (e.g., a phonebook, messages, still images, videos, and the like) that has been or will be output. Also, the memory 160 may store data regarding various ways of vibration and audio signals output when a touch is applied to the touch screen.
The memory 160 may include at least one type of storage medium including a flash memory, a hard disk, a multimedia card, a card-type memory (e.g., SD or DX memory, etc.), a Random Access Memory (RAM), a Static Random Access Memory (SRAM), a read-only memory (ROM), an electrically erasable programmable read-only memory (EEPROM), a programmable read-only memory (PROM), a magnetic memory, a magnetic disk, an optical disk, and the like. Also, the mobile terminal 100 may cooperate with a network storage device that performs a storage function of the memory 160 through a network connection.
The controller 180 generally controls the overall operation of the mobile terminal. For example, the controller 180 performs control and processing related to voice calls, data communications, video calls, and the like. In addition, the controller 180 may include a multimedia module 1810 for reproducing (or playing back) multimedia data, and the multimedia module 1810 may be constructed within the controller 180 or may be constructed separately from the controller 180. The controller 180 may perform a pattern recognition process to recognize a handwriting input or a picture drawing input performed on the touch screen as a character or an image.
The power supply unit 190 receives external power or internal power and provides appropriate power required to operate various elements and components under the control of the controller 180.
The various embodiments described herein may be implemented in a computer-readable medium using, for example, computer software, hardware, or any combination thereof. For a hardware implementation, the embodiments described herein may be implemented using at least one of an Application Specific Integrated Circuit (ASIC), a Digital Signal Processor (DSP), a Digital Signal Processing Device (DSPD), a Programmable Logic Device (PLD), a Field Programmable Gate Array (FPGA), a processor, a controller, a microcontroller, a microprocessor, an electronic unit designed to perform the functions described herein, and in some cases, such embodiments may be implemented in the controller 180. For a software implementation, the implementation such as a process or a function may be implemented with a separate software module that allows performing at least one function or operation. The software codes may be implemented by software applications (or programs) written in any suitable programming language, which may be stored in the memory 160 and executed by the controller 180.
Up to this point, mobile terminals have been described in terms of their functionality. Hereinafter, a slide-type mobile terminal among various types of mobile terminals, such as a folder-type, bar-type, swing-type, slide-type mobile terminal, and the like, will be described as an example for the sake of brevity. Accordingly, the present invention can be applied to any type of mobile terminal, and is not limited to a slide type mobile terminal.
The mobile terminal 100 as shown in fig. 1 may be configured to operate with communication systems such as wired and wireless communication systems and satellite-based communication systems that transmit data via frames or packets.
A communication system in which a mobile terminal according to the present invention is operable will now be described with reference to fig. 2.
Such communication systems may use different air interfaces and/or physical layers. For example, the air interface used by the communication system includes, for example, Frequency Division Multiple Access (FDMA), Time Division Multiple Access (TDMA), Code Division Multiple Access (CDMA), and Universal Mobile Telecommunications System (UMTS) (in particular, Long Term Evolution (LTE)), global system for mobile communications (GSM), and the like. By way of non-limiting example, the following description relates to a CDMA communication system, but such teachings are equally applicable to other types of systems.
Referring to fig. 2, the CDMA wireless communication system may include a plurality of mobile terminals 100, a plurality of Base Stations (BSs) 270, Base Station Controllers (BSCs) 275, and a Mobile Switching Center (MSC) 280. The MSC280 is configured to interface with a Public Switched Telephone Network (PSTN) 290. The MSC280 is also configured to interface with a BSC275, which may be coupled to the base station 270 via a backhaul. The backhaul may be constructed according to any of several known interfaces including, for example, E1/T1, ATM, IP, PPP, frame Relay, HDSL, ADSL, or xDSL. It will be understood that a system as shown in fig. 2 may include multiple BSCs 2750.
Each BS270 may serve one or more sectors (or regions), each sector covered by a multi-directional antenna or an antenna pointing in a particular direction being radially distant from the BS 270. Alternatively, each partition may be covered by two or more antennas for diversity reception. Each BS270 may be configured to support multiple frequency allocations, with each frequency allocation having a particular frequency spectrum (e.g., 1.25MHz,5MHz, etc.).
The intersection of partitions with frequency allocations may be referred to as a CDMA channel. The BS270 may also be referred to as a Base Transceiver Subsystem (BTS) or other equivalent terminology. In such a case, the term "base station" may be used to generically refer to a single BSC275 and at least one BS 270. The base stations may also be referred to as "cells". Alternatively, each sector of a particular BS270 may be referred to as a plurality of cell sites.
As shown in fig. 2, a Broadcast Transmitter (BT)295 transmits a broadcast signal to the mobile terminal 100 operating within the system. A broadcast receiving module 111 as shown in fig. 1 is provided at the mobile terminal 100 to receive a broadcast signal transmitted by the BT 295. In fig. 2, several Global Positioning System (GPS) satellites 300 are shown. The satellite 300 assists in locating at least one of the plurality of mobile terminals 100.
In fig. 2, a plurality of satellites 300 are depicted, but it is understood that useful positioning information may be obtained with any number of satellites. The GPS module 115 as shown in fig. 1 is generally configured to cooperate with satellites 300 to obtain desired positioning information. Other techniques that can track the location of the mobile terminal may be used instead of or in addition to GPS tracking techniques. In addition, at least one GPS satellite 300 may selectively or additionally process satellite DMB transmission.
As a typical operation of the wireless communication system, the BS270 receives reverse link signals from various mobile terminals 100. The mobile terminal 100 is generally engaged in conversations, messaging, and other types of communications. Each reverse link signal received by a particular base station 270 is processed within the particular BS 270. The obtained data is forwarded to the associated BSC 275. The BSC provides call resource allocation and mobility management functions including coordination of soft handoff procedures between BSs 270. The BSCs 275 also route the received data to the MSC280, which provides additional routing services for interfacing with the PSTN 290. Similarly, the PSTN290 interfaces with the MSC280, the MSC interfaces with the BSCs 275, and the BSCs 275 accordingly control the BS270 to transmit forward link signals to the mobile terminal 100.
Based on the above mobile terminal hardware structure and communication system, the present invention provides various embodiments of the method.
The embodiment of the invention provides a terminal antenna based on a metal rear shell, which comprises: the antenna comprises a metal rear shell, a metal front shell and a metal rear shell, wherein one end of the metal rear shell is provided with a gap, and the metal rear shell is divided into a bottom metal frame and a back metal plate by the gap, wherein the bottom metal frame is used as an antenna radiation unit, and the back metal plate is used as the ground; a grounding element connected to the back metal plate; the antenna comprises a feed matching network and a feed point, wherein the feed matching network is fed into the antenna radiation unit through the feed point. The gap of the embodiment of the invention is very close to the bottom end of the metal frame, so that the common three-section design is very close to the all-metal integrated design. The antenna area is smaller, the occupied ratio of a clearance area is reduced, the occupied ratio of a screen is greatly increased, and the visual experience is better. The metal plate at the back accounts for up to 95%, and the metal touch feeling is excellent, and the heat-conducting property is excellent. The metal fuselage is ultra-thin. In addition, the antenna has a simple structure, is integrally designed with the rear shell, and is convenient to process and produce.
Fig. 3 is a terminal antenna based on a metal back shell according to an embodiment of the present invention, and as shown in fig. 3, the antenna includes:
the antenna comprises a metal rear shell, wherein a gap 31 is arranged at one end of the metal rear shell, and the metal rear shell is divided into a bottom metal frame 32 and a back metal plate 33 by the gap 31, wherein the bottom metal frame 32 is used as an antenna radiation unit, and the back metal plate 33 is used as a ground.
Here, the metal rear case refers to a rear case of the terminal, and the rear case of the terminal is made of a metal material. In the embodiment of the invention, one side of the terminal with the display screen is called a front side, the back side of the terminal is called a back side, and the back side of the terminal is provided with the metal back shell.
In the embodiment of the present invention, the bottom metal frame 32 located at the bottom of the metal back shell is designed as an antenna radiation unit, and the antenna radiation unit is used for receiving radio frequency signals and/or sending radio frequency signals. The bottom metal frame 32 occupies only the bottom of the metal back case, and the occupied area is very small. In one embodiment, the bottom metal frame 32 is configured as shown in FIG. 3, wherein the bottom metal frame 32 has a thickness of 0.6mm, a height of 5mm, and an effective length of 86 mm.
The shape and size of the bottom metal frame 32 are not limited to the above description, and may be designed according to the product requirements.
In the embodiment of the present invention, a gap 31 is formed between the bottom metal frame 32 and the back metal plate 33, and the area occupied by the gap 31 is a non-conductive area. In one embodiment, the non-conductive region is a plastic region. The bottom metal frame 32 and the back metal plate 33 are connected through the non-conductive area, the width of the non-conductive area is 2mm, the non-conductive area and the bottom metal frame 32 are connected through the radian design, and the width of the bottom metal frame 32 is further reduced in the aspect of vision.
The shape and size of the non-conductive region are not limited to the above description, and may be designed according to the needs of the product.
In one embodiment, the back metal plate 33 has dimensions of 138mm x 71mm x 0.3mm, where 138mm represents length, 71mm represents width, and 0.3mm represents thickness. The entire back metal plate 33 is at a ratio of up to 95% when viewed from the back, and the integrated visual impact of the all-metal appearance can be well satisfied.
According to the technical scheme of the embodiment of the invention, the bottom metal frame is fully utilized as the antenna radiation unit, the non-conductive area moves to the bottom as much as possible, and the common three-section design is very close to the all-metal integrated design visually.
The terminal antenna based on the metal rear shell of the embodiment of the invention can meet the requirements of appearance design and can provide multiple communication modes and multiple communication frequency bands. The communication modes comprise seven modes, and the communication frequency bands comprise eighteen frequency bands. By adopting a reconfigurable technology, the coverage of the whole high, middle and low frequency bands can be effectively realized by switching the switches, and the specific realization method is as follows:
the antenna further includes:
a ground element 34, the ground element 34 being connected to the back metal plate 33;
a feed matching network 35 and a feed point 36, wherein the feed matching network 35 feeds the antenna radiation unit through the feed point 36.
A switching element 37, the switching element 37 connecting the antenna radiation unit and the back metal plate 33.
When the switch element 37 is in a connection state, the antenna radiation unit operates in a first frequency band and a second frequency band by adjusting the circuit parameters of the feed matching network 35, wherein the frequency of the first frequency band is higher than the frequency of the second frequency band.
Specifically, when the switching element 37 is in the connected state, the high and medium frequency coverage of the antenna can be realized by adjusting the inductance parameter of the feed matching network 35. Here, the first band refers to a high frequency band, and the second band refers to an intermediate frequency band. The high and medium frequency bands include: digital Cellular System (DCS), Personal Communication System (PCS), Wideband Code Division Multiple Access (WCDMA) i, WCDMA ii, Time Division-Synchronous Code Division Multiple Access (TD-SCDMA) A, TD-SCDMA, Long Term Evolution (LTE) 1, LTE3, LTE7, LTE38, LTE39, LTE40, and LTE 41.
When the switch element 37 is in an off state, the antenna radiation unit operates in a third frequency band by adjusting circuit parameters of the feed matching network 35, and the frequency of the third frequency band is lower than the first frequency band and the second frequency band.
Specifically, when the switching element 37 is in the off state, only the capacitance parameter in the matching network needs to be changed, so that the switching from the high frequency and the intermediate frequency to the low frequency can be realized. The low frequency band includes: code Division Multiple Access (CDMA) BC0, Global System for Mobile Communications (GSM) 850, GSM900, WCDMA v, WCDMA viii.
The antenna further includes: the conductive medium is arranged on the side edge or the top of the metal frame of the metal rear shell; at least one point on the conductive medium is coupled or shorted with the bottom metal frame.
Optionally, the conductive medium is a metal sheet or a metal sheet embedded in the leather sheath or a metal coating embedded in the leather sheath. When at least one point on the conductive medium is coupled with the bottom metal frame (namely the antenna 2), the conductive medium can be completely embedded in the leather sheath, and the distance between the coupling point and the bottom metal frame is larger than 0mm, namely, the coupling point and the bottom metal frame are not connected, for example, the influence on the volume of the mobile terminal is considered, and the range of the coupling point and the bottom metal frame can be within 0.1-3 mm; when at least one point on the conductive medium is in short circuit with the bottom metal frame, at least one point on the conductive medium is exposed outside the leather sheath.
Optionally, the distance between the conductive medium and the bottom metal frame is greater than or equal to 0.5mm except for the coupling point and the short-circuit point.
When the coupling point or the short-circuit point is between the right end of the slot 31 and the ground element 34 (e.g., the conductive medium 173 and the conductive medium 174 in fig. 3), the frequency band of the antenna can be extended toward a low frequency (e.g., to 700MHz or lower), and the performance of the high frequency band of the antenna can be improved; when the coupling point or the shorting point is between the feeding point 36 and the switching element 37 (e.g., the conductive medium 171 and the conductive medium 172 in fig. 3), the performance of the high frequency band of the antenna can be improved.
The coupling point is a point on the conductive medium coupled with the bottom metal frame, and the short-circuit point is a point on the conductive medium short-circuited with the bottom metal frame.
Optionally, the coupling point and the shorting point are one.
The length of the conductive medium extending from the side edge or the top of the metal frame of the metal rear shell is not limited, and can be adjusted correspondingly according to the actual extending frequency band requirement.
The gap of the embodiment of the invention is very close to the bottom end of the metal frame, so that the common three-section design is very close to the all-metal integrated design. The antenna area is smaller, the occupied ratio of a clearance area is reduced, the occupied ratio of a screen is greatly increased, and the visual experience is better. The metal plate at the back accounts for up to 95%, and the metal touch feeling is excellent, and the heat-conducting property is excellent. The metal body is ultra-thin. In addition, the antenna is simple in structure, integrated with the rear shell, convenient to process and produce, and conductive media are arranged on the side edge or the top of the metal frame of the metal rear shell to extend the coverage frequency band of the antenna, so that the antenna frequency band range is larger.
Based on the above terminal antenna based on the metal back shell, an embodiment of the present invention further provides a terminal, and with reference to fig. 4, the terminal includes: a terminal antenna based on a metal rear shell; wherein the antenna comprises:
the antenna comprises a metal rear shell, a first end of the metal rear shell is provided with a gap, and the metal rear shell is divided into a bottom metal frame and a back metal plate by the gap, wherein the bottom metal frame is used as an antenna radiation unit, and the back metal plate is used as the ground;
the conductive medium is arranged on the side edge or the top of the metal frame of the metal rear shell; at least one point on the conductive medium is coupled or shorted with the bottom metal frame;
a grounding element connected to the back metal plate;
the antenna comprises a feed matching network and a feed point, wherein the feed matching network is fed into the antenna radiation unit through the feed point.
The antenna further includes:
a switching element connecting the antenna radiation unit and the back metal plate.
When the switch element is in a connection state, the antenna radiation unit is enabled to work in a first frequency band and a second frequency band by adjusting circuit parameters of the matching network, and the frequency of the first frequency band is higher than that of the second frequency band.
When the switch element is in an off state, the antenna radiation unit is enabled to work in a third frequency band by adjusting circuit parameters of the matching network, and the frequency of the third frequency band is lower than the first frequency band and the second frequency band.
The area occupied by the gap is a non-conductive area.
Optionally, the conductive medium is a metal sheet or a metal sheet embedded in the leather sheath or a metal coating embedded in the leather sheath. When at least one point on the conductive medium is coupled with the bottom metal frame (namely the antenna 2), the conductive medium can be completely embedded in the leather sheath, and the distance between the coupling point and the bottom metal frame is larger than 0mm, namely, the coupling point and the bottom metal frame are not connected, for example, the influence on the volume of the mobile terminal is considered, and the range of the coupling point and the bottom metal frame can be within 0.1-3 mm; when at least one point on the conductive medium is in short circuit with the bottom metal frame, at least one point on the conductive medium is exposed outside the leather sheath.
Optionally, the distance between the conductive medium and the bottom metal frame is greater than or equal to 0.5mm except for the coupling point and the short-circuit point.
When the coupling point or the short-circuit point is between the right end of the slot 31 and the ground element 34 (e.g., the conductive medium 173 and the conductive medium 174 in fig. 3), the frequency band of the antenna can be expanded toward a low frequency (e.g., to 700MHz or lower), and the performance of the high frequency band of the antenna can be improved; when the coupling point or the shorting point is between the feeding point 36 and the switching element 37 (e.g., the conductive medium 171 and the conductive medium 172 in fig. 3), the performance of the high frequency band of the antenna can be improved.
The coupling point is a point on the conductive medium coupled with the bottom metal frame, and the short-circuit point is a point on the conductive medium short-circuited with the bottom metal frame.
Optionally, the coupling point and the shorting point are one.
The length of the conductive medium extending from the side edge or the top of the metal frame of the metal rear shell is not limited, and can be adjusted correspondingly according to the actual extending frequency band requirement.
The terminal provided by the embodiment of the invention is provided with the terminal antenna based on the metal rear shell, and the gap is very close to the bottom end of the metal frame, so that the common three-section design is very close to the all-metal integrated design. The antenna area is smaller, the occupied ratio of a clearance area is reduced, the occupied ratio of a screen is greatly increased, and the visual experience is better. The metal plate at the back accounts for up to 95%, and the metal touch feeling is excellent, and the heat-conducting property is excellent. The metal body is ultra-thin. In addition, the antenna is simple in structure, integrated with the rear shell, convenient to process and produce, and conductive media are arranged on the side edge or the top of the metal frame of the metal rear shell to extend the coverage frequency band of the antenna, so that the antenna frequency band range is larger.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (6)

1. A terminal antenna based on a metal back shell, the antenna comprising:
the antenna comprises a metal rear shell, a metal front shell and a metal rear shell, wherein one end of the metal rear shell is provided with a gap, and the metal rear shell is divided into a bottom metal frame and a back metal plate by the gap, wherein the bottom metal frame is used as an antenna radiation unit, and the back metal plate is used as the ground;
the conductive medium is arranged on the side edge of the metal frame of the metal rear shell; at least one point on the conductive medium is coupled with the bottom metal frame;
a grounding element connected to the back metal plate;
a feed matching network and a feed point, the feed matching network feeding the antenna radiating element through the feed point,
the distance between the coupling point and the bottom metal frame is 0.1-3 mm, and the distance between the other points on the conductive medium except the coupling point and the bottom metal frame is more than or equal to 0.5 mm;
wherein the coupling point is a point on the conductive medium coupled with the bottom metal frame,
wherein a coupling point is located between the right end of the slot and the ground element, or
The antenna further includes: a switching element connecting the antenna radiation unit and the back metal plate,
a coupling point is located between the feed point and the switching element.
2. A terminal antenna according to claim 1, wherein the conductive medium is a metal sheet or a metal sheet embedded in a leather sheath or a metal coating embedded in the leather sheath.
3. A terminal antenna according to claim 1 or 2, wherein the coupling point is a point.
4. A terminal, characterized in that the terminal comprises: a terminal antenna based on a metal rear shell; wherein the antenna comprises:
the antenna comprises a metal rear shell, a first end of the metal rear shell is provided with a gap, and the metal rear shell is divided into a bottom metal frame and a back metal plate by the gap, wherein the bottom metal frame is used as an antenna radiation unit, and the back metal plate is used as the ground;
the conductive medium is arranged on the side edge of the metal frame of the metal rear shell; at least one point on the conductive medium is coupled with the bottom metal frame;
a grounding element connected to the back metal plate;
a feed matching network and a feed point, the feed matching network feeding the antenna radiating element through the feed point,
the distance between the coupling point and the bottom metal frame is 0.1-3 mm, and the distance between the other points on the conductive medium except the coupling point and the bottom metal frame is more than or equal to 0.5 mm;
wherein the coupling point is a point on the conductive medium coupled with the bottom metal frame,
wherein a coupling point is located between the right end of the slot and the ground element, or
The antenna further includes: a switching element connecting the antenna radiation unit and the back metal plate,
a coupling point is located between the feed point and the switching element.
5. A terminal as claimed in claim 4, characterised in that the conductive medium is a metal sheet or a metal sheet embedded in a holster or a metal coating embedded in the holster.
6. A terminal as claimed in claim 4 or 5, characterised in that the coupling point is a point.
CN201610863634.9A 2016-09-29 2016-09-29 Terminal antenna and terminal based on metal backshell Active CN106486760B (en)

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