WO2020029183A1 - Filter, duplexer, and communication device - Google Patents

Filter, duplexer, and communication device Download PDF

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Publication number
WO2020029183A1
WO2020029183A1 PCT/CN2018/099675 CN2018099675W WO2020029183A1 WO 2020029183 A1 WO2020029183 A1 WO 2020029183A1 CN 2018099675 W CN2018099675 W CN 2018099675W WO 2020029183 A1 WO2020029183 A1 WO 2020029183A1
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WIPO (PCT)
Prior art keywords
hole
resonator
groove cavity
screw
insulating substrate
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PCT/CN2018/099675
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French (fr)
Chinese (zh)
Inventor
雷培林
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深圳市大富科技股份有限公司
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Priority to CN201880041292.XA priority Critical patent/CN111033884B/en
Priority to PCT/CN2018/099675 priority patent/WO2020029183A1/en
Publication of WO2020029183A1 publication Critical patent/WO2020029183A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/20—Frequency-selective devices, e.g. filters
    • H01P1/207—Hollow waveguide filters

Definitions

  • the present invention relates to the field of communication technologies, and in particular, to a filter, a duplexer, and a communication device.
  • filters are mainly used to suppress unwanted clutter signals and allow their useful signals to pass.
  • Filters can be divided into four categories according to their functions: band-pass filters, band-stop filters, low-pass filters, and high-pass filters.
  • band-pass filters when a certain frequency point or a certain frequency band signal interferes with the system very much, and when strong suppression is needed, a band stop filter is more suitable.
  • a band stop filter is usually implemented by connecting several resonators 12 to a main transmission line 11.
  • the technical problem mainly solved by the present invention is to provide a filter, a duplexer and a communication device, so as to realize a design that is convenient for processing, convenient for debugging and miniaturization.
  • a filter including:
  • the housing includes a cover plate and a groove cavity.
  • the cover plate is disposed on the open side of the groove cavity.
  • the groove cavity includes at least two grooves. A first through hole penetrating through the sidewall of the groove;
  • At least two resonators are respectively disposed in the at least two grooves, and the resonators are in contact with the grooves and grounded;
  • An insulating substrate is provided on the groove cavity corresponding to the first through hole, and a metal layer is provided on a side of the insulating substrate away from the groove cavity for transmitting signals.
  • the insulating substrate corresponds to A position of the first through hole is provided with a second through hole;
  • the resonator is electrically connected to the metal layer through the first through hole and the second through hole.
  • a duplexer is provided, the duplexer includes a filter, and the filter includes:
  • the housing includes a cover plate and a groove cavity.
  • the cover plate is disposed on the open side of the groove cavity.
  • the groove cavity includes at least two grooves. A side wall of each groove is provided. A first through hole penetrating through the sidewall of the groove;
  • An insulating substrate is provided on the groove cavity corresponding to the first through hole, and a metal layer is provided on a side of the insulating substrate away from the groove cavity for transmitting signals.
  • the insulating substrate corresponds to A position of the first through hole is provided with a second through hole;
  • the resonator is electrically connected to the metal layer through the first through hole and the second through hole.
  • the beneficial effect of the present invention is that, different from the prior art, the present invention provides a resonator in the groove of the groove cavity of the housing, and an insulating substrate with a metal layer is provided on one side of the groove cavity.
  • the resonator is electrically connected to the metal layer through a first through hole provided on the casing and a second through hole on the insulating substrate, thereby achieving a compact design with convenient processing, convenient debugging, and small size. .
  • FIG. 1 is a schematic structural diagram of a conventional band stop filter
  • FIG. 3 is a schematic structural diagram of a conventional coaxial cavity band-rejection filter
  • FIG. 4 is a schematic structural diagram of a filter according to the present invention.
  • FIG. 5 is a schematic structural breakdown diagram of a filter of the present invention.
  • FIG. 7 is a schematic structural diagram of a metal layer on an insulating substrate of a filter of the present invention.
  • FIG. 8 is a schematic structural diagram of a longitudinal axis section of a housing of the filter of the present invention.
  • FIG. 9 is a schematic diagram of a simulation waveform of the filter of the present invention.
  • FIG. 10 is a schematic structural diagram of a duplexer according to the present invention.
  • FIG. 11 is a schematic structural diagram of an amplifier of the present invention.
  • FIG. 12 is a schematic structural diagram of a communication device of the present invention.
  • FIG. 4 is a schematic structural diagram of a filter of the present invention.
  • the filter 1 includes:
  • At least two resonators 200 are respectively disposed in the at least two grooves 121, and the resonator 200 is in contact with the grooves 121;
  • the resonator 200 is electrically connected to the metal layer 310 through the first through hole 122 and the second through hole 320.
  • the resonance signal is input from one end of the metal layer 310, passes through each of the resonators 200, and is output from the other end of the metal layer 310.
  • the resonance frequency of each of the resonators 200 corresponds to the stopband frequency of the filter 1.
  • the metal layer 310 is a strip-shaped metal wire.
  • the metal wire is a folded line structure.
  • FIG. 6 it is a schematic structural diagram of an unsoldered insulating substrate 300 of the filter 1 of the present invention, wherein the metal wire has a square wave structure.
  • the direction of the metal wire is perpendicular to the axial direction of the resonator 200.
  • FIG. 8 is a schematic structural diagram of a longitudinal axis section of a housing of the filter 1 according to the present invention.
  • a longitudinal section along a dotted line a in FIG. 4 a third through hole 111 is provided on the cover plate 110 corresponding to the resonator 200.
  • the resonance bolt 112 is connected to the resonator 200 through the third through hole 111, and the resonance frequency of the resonator 200 is tuned by the resonance bolt 112.
  • the groove cavity 120 is rectangular, the groove 121 is sequentially disposed along the long side of the groove cavity 120, and the insulating substrate 300 is disposed on the long side of the groove cavity 120.
  • the filter 1 includes four of the resonators 200. 112 tune the resonance screw 230 so that the four resonators 200 obtain two resonance frequencies, that is, the resonance frequencies corresponding to the two resonators 200 are the same. In other embodiments, the resonance of the resonator 200 is the same. The frequencies can be tuned to be exactly the same, partially the same or completely different.
  • the stopband point m1 corresponds to a stopband frequency of 2.975GHz
  • the stopband point m2 corresponds to a stopband frequency of 2.122GHz.
  • FIG. 10 is a schematic structural diagram of a duplexer according to the present invention.
  • the duplexer 2 includes the filter 1 according to any one of the above.
  • FIG. 11 is a schematic structural diagram of an amplifier according to the present invention.
  • the amplifier 3 includes the filter 1 according to any one of the above.
  • FIG. 12 is a schematic structural diagram of a communication device according to the present invention.
  • the communication device 4 includes the filter 1 according to any one of the above.

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Abstract

A filter (1), a duplexer (2), and a communication device (4). The filter (1) comprises: a housing (100) comprising a cover plate (110) and a multi-recess compartment (120), wherein the multi-recess compartment (120) has recesses (121), and first through holes (122) are arranged at, and extend through, one sidewalls of the recesses (121); and resonators (200) provided inside the recesses (121), wherein the multi-recess compartment (120) is provided with an insulation substrate (300) corresponding to the first through holes (122), a metal layer (310) is provided at one surface of the insulation substrate (300) away from the multi-recess compartment (120), the insulation substrate (300) has second through holes (320) arranged at positions corresponding to the first through holes (122), and the resonators (200) are electrically connected to the metal layer (310) by means of the first through holes and the second through holes (320). The filter (1) of the present invention combines advantages of a microstrip bandstop filter and a cavity bandstop filter, and thus can be processed conveniently, has a smaller size, and can be debugged easily.

Description

一种滤波器、双工器及通信设备Filter, duplexer and communication equipment 【技术领域】[Technical Field]
本发明涉及通信技术领域，特别是涉及一种滤波器、双工器及通信设备。The present invention relates to the field of communication technologies, and in particular, to a filter, a duplexer, and a communication device.
【背景技术】【Background technique】
在无线通信***中，滤波器主要用于抑制不需要的杂波信号，让其有用的信号通过。滤波器按功能分可分为四类：带通滤波器，带阻滤波器，低通滤波器，高通滤波器。其中，在通信***中，当某一频点或者某一频段信号对***干扰很大，这时需要对其进行强抑制时，带阻滤波器更适用。如图1所示，通常带阻滤波器是通过在一条主传输线11上连接几个谐振器12来实现的。In wireless communication systems, filters are mainly used to suppress unwanted clutter signals and allow their useful signals to pass. Filters can be divided into four categories according to their functions: band-pass filters, band-stop filters, low-pass filters, and high-pass filters. Among them, in a communication system, when a certain frequency point or a certain frequency band signal interferes with the system very much, and when strong suppression is needed, a band stop filter is more suitable. As shown in FIG. 1, a band stop filter is usually implemented by connecting several resonators 12 to a main transmission line 11.
常用的谐振器有微带线谐振器和同轴腔体谐振器。图2为微带线带阻滤波器，采用短截线谐振器22沿主传输线21一字排列连接构成，具有加工方便，体积小等优点，缺点是不易调试，对加工要求较高；图3为同轴腔体带阻滤波器，由封闭金属腔31中放置一段金属导体32构成，其中，金属导体32与主传输线33连接，所述金属导体32可调节带阻频率，具有调试方便，对加工要求不高等优点，但体积较大，加工难度较大。Commonly used resonators are microstrip line resonators and coaxial cavity resonators. Figure 2 is a microstrip line band-stop filter, which uses stub resonators 22 arranged in a line along the main transmission line 21. It has the advantages of convenient processing, small size, etc. The disadvantage is that it is not easy to debug and has high processing requirements; Figure 3 It is a coaxial cavity band-rejection filter. It consists of a metal conductor 32 placed in a closed metal cavity 31. The metal conductor 32 is connected to the main transmission line 33. The metal conductor 32 can adjust the band-stop frequency and is easy to debug. The processing requirements are not high, but the volume is large and the processing is difficult.
【发明内容】[Summary of the Invention]
本发明主要解决的技术问题是提供一种滤波器、双工器及通信设备，以实现加工方便，便于调试以及小型化的设计。The technical problem mainly solved by the present invention is to provide a filter, a duplexer and a communication device, so as to realize a design that is convenient for processing, convenient for debugging and miniaturization.
为解决上述技术问题，本发明采用的一个技术方案是：To solve the above technical problems, a technical solution adopted by the present invention is:
一种滤波器，包括：A filter including:
壳体，包括盖板及凹槽腔体，所述盖板设置于所述凹槽腔体开口侧，所述凹槽腔体包括至少两凹槽，每一所述凹槽的一侧壁设有贯穿所述凹 槽侧壁的第一通孔；The housing includes a cover plate and a groove cavity. The cover plate is disposed on the open side of the groove cavity. The groove cavity includes at least two grooves. A first through hole penetrating through the sidewall of the groove;
至少两谐振器，分别设置于所述至少两凹槽内，所述谐振器与所述凹槽接触并接地；At least two resonators are respectively disposed in the at least two grooves, and the resonators are in contact with the grooves and grounded;
对应所述第一通孔的所述凹槽腔体上设有一绝缘基板，所述绝缘基板上远离所述凹槽腔体的一面设有金属层，用于传输信号，所述绝缘基板上对应所述第一通孔的位置设有第二通孔；An insulating substrate is provided on the groove cavity corresponding to the first through hole, and a metal layer is provided on a side of the insulating substrate away from the groove cavity for transmitting signals. The insulating substrate corresponds to A position of the first through hole is provided with a second through hole;
所述谐振器通过所述第一通孔及第二通孔与所述金属层电性连接。The resonator is electrically connected to the metal layer through the first through hole and the second through hole.
为解决上述技术问题，本发明采用的另一个技术方案是：To solve the above technical problems, another technical solution adopted by the present invention is:
提供一种双工器，所述双工器包括滤波器，所述滤波器包括：A duplexer is provided, the duplexer includes a filter, and the filter includes:
壳体，包括盖板及凹槽腔体，所述盖板设置于所述凹槽腔体开口侧，所述凹槽腔体包括至少两凹槽，每一所述凹槽的一侧壁设有贯穿所述凹槽侧壁的第一通孔；The housing includes a cover plate and a groove cavity. The cover plate is disposed on the open side of the groove cavity. The groove cavity includes at least two grooves. A side wall of each groove is provided. A first through hole penetrating through the sidewall of the groove;
至少两谐振器，分别设置于所述至少两凹槽内，所述谐振器与所述凹槽接触；At least two resonators are respectively disposed in the at least two grooves, and the resonators are in contact with the grooves;
对应所述第一通孔的所述凹槽腔体上设有一绝缘基板，所述绝缘基板上远离所述凹槽腔体的一面设有金属层，用于传输信号，所述绝缘基板上对应所述第一通孔的位置设有第二通孔；An insulating substrate is provided on the groove cavity corresponding to the first through hole, and a metal layer is provided on a side of the insulating substrate away from the groove cavity for transmitting signals. The insulating substrate corresponds to A position of the first through hole is provided with a second through hole;
所述谐振器通过所述第一通孔及第二通孔与所述金属层电性连接。The resonator is electrically connected to the metal layer through the first through hole and the second through hole.
为解决上述技术问题，本发明采用的另一个技术方案是：To solve the above technical problems, another technical solution adopted by the present invention is:
提供一种通信设备，所述通信设备包括滤波器，所述滤波器包括：A communication device is provided. The communication device includes a filter, and the filter includes:
壳体，包括盖板及凹槽腔体，所述盖板设置于所述凹槽腔体开口侧，所述凹槽腔体包括至少两凹槽，每一所述凹槽的一侧壁设有贯穿所述凹槽侧壁的第一通孔；The housing includes a cover plate and a groove cavity. The cover plate is disposed on the open side of the groove cavity. The groove cavity includes at least two grooves. A side wall of each groove is provided. A first through hole penetrating through the sidewall of the groove;
至少两谐振器，分别设置于所述至少两凹槽内，所述谐振器与所述凹槽接触；At least two resonators are respectively disposed in the at least two grooves, and the resonators are in contact with the grooves;
对应所述第一通孔的所述凹槽腔体上设有一绝缘基板，所述绝缘基板上远离所述凹槽腔体的一面设有金属层，用于传输信号，所述绝缘基板上对应所述第一通孔的位置设有第二通孔；An insulating substrate is provided on the groove cavity corresponding to the first through hole, and a metal layer is provided on a side of the insulating substrate away from the groove cavity for transmitting signals. The insulating substrate corresponds to A position of the first through hole is provided with a second through hole;
所述谐振器通过所述第一通孔及第二通孔与所述金属层电性连接。The resonator is electrically connected to the metal layer through the first through hole and the second through hole.
本发明的有益效果是：区别于现有技术的情况，本发明通过壳体凹槽腔体的凹槽内设有谐振器，凹槽腔体一面设有带有金属层的绝缘基板，所述谐振器通过设置在所述壳体上的第一通孔与所述绝缘基板上的第二通孔与所述金属层电性连接，进而实现加工方便、便于调试，体积小的小型化设计目的。The beneficial effect of the present invention is that, different from the prior art, the present invention provides a resonator in the groove of the groove cavity of the housing, and an insulating substrate with a metal layer is provided on one side of the groove cavity. The resonator is electrically connected to the metal layer through a first through hole provided on the casing and a second through hole on the insulating substrate, thereby achieving a compact design with convenient processing, convenient debugging, and small size. .
【附图说明】[Brief Description of the Drawings]
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例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发明的一些实施例，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。In order to more clearly explain the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some of the present invention. For those of ordinary skill in the art, other embodiments may be obtained based on these drawings without paying creative labor.
图1是现有的带阻滤波器结构示意图；FIG. 1 is a schematic structural diagram of a conventional band stop filter;
图2是现有的微带线带阻滤波器结构示意图；FIG. 2 is a schematic structural diagram of an existing microstrip line band-rejection filter;
图3是现有的同轴腔体带阻滤波器结构示意图；3 is a schematic structural diagram of a conventional coaxial cavity band-rejection filter;
图4是本发明滤波器的结构示意图；4 is a schematic structural diagram of a filter according to the present invention;
图5是本发明滤波器的结构拆分示意图；FIG. 5 is a schematic structural breakdown diagram of a filter of the present invention; FIG.
图6是本发明滤波器未经焊接的绝缘基板的结构示意图；6 is a schematic structural diagram of an unsoldered insulating substrate of the filter of the present invention;
图7是本发明滤波器的绝缘基板上的金属层的结构示意图；7 is a schematic structural diagram of a metal layer on an insulating substrate of a filter of the present invention;
图8是本发明滤波器的壳体纵轴剖面结构示意图；8 is a schematic structural diagram of a longitudinal axis section of a housing of the filter of the present invention;
图9是本发明滤波器的仿真波形示意图；FIG. 9 is a schematic diagram of a simulation waveform of the filter of the present invention; FIG.
图10是本发明双工器的结构示意图；10 is a schematic structural diagram of a duplexer according to the present invention;
图11是本发明放大器的结构示意图；11 is a schematic structural diagram of an amplifier of the present invention;
图12是本发明通信设备的结构示意图。FIG. 12 is a schematic structural diagram of a communication device of the present invention.
【具体实施方式】【detailed description】
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述。以下各实施例中不冲突的可以相互结合。显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，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，都属于本发明保护的范围。The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. In the following embodiments, those that do not conflict may be combined with each other. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
本发明的说明书和权利要求书及上述附图中的术“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、***、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。The terms "including" and "having" and any variants thereof in the description and claims of the present invention and the above drawings are intended to cover non-exclusive inclusions, for example, processes, methods, including a series of steps or units, The system, product, or device need not be limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or inherent to these processes, methods, products, or devices.
下面结合附图和实施例对本发明进行详细的说明。The present invention is described in detail below with reference to the drawings and embodiments.
请参阅图4，是本发明滤波器的结构示意图。所述滤波器1包括：Please refer to FIG. 4, which is a schematic structural diagram of a filter of the present invention. The filter 1 includes:
壳体100，包括盖板110及凹槽腔体120，所述盖板110设置于所述凹槽腔体120开口侧，所述凹槽腔体120包括至少两凹槽121，每一所述凹槽121的一侧壁设有贯穿所述凹槽121侧壁的第一通孔122；The housing 100 includes a cover plate 110 and a groove cavity 120. The cover plate 110 is disposed on the open side of the groove cavity 120. The groove cavity 120 includes at least two grooves 121, each of which A side wall of the groove 121 is provided with a first through hole 122 penetrating the side wall of the groove 121;
至少两谐振器200，分别设置于所述至少两凹槽121内，所述谐振器200与所述凹槽121接触；At least two resonators 200 are respectively disposed in the at least two grooves 121, and the resonator 200 is in contact with the grooves 121;
对应所述第一通孔122的所述凹槽腔体120上设有一绝缘基板300，所述绝缘基板300上远离所述凹槽腔体120的一面设有金属层310，用于传输信号，所述绝缘基板300上对应所述第一通孔122的位置设有第二通孔320；An insulating substrate 300 is provided on the groove cavity 120 corresponding to the first through hole 122, and a metal layer 310 is provided on a side of the insulating substrate 300 away from the groove cavity 120 for transmitting signals. A second through hole 320 is provided on the insulating substrate 300 at a position corresponding to the first through hole 122;
所述谐振器200通过所述第一通孔122及第二通孔320与所述金属层310电性连接。The resonator 200 is electrically connected to the metal layer 310 through the first through hole 122 and the second through hole 320.
其中，所述凹槽腔体120开口侧四角分别设有第一螺孔123，所述盖板110上与所述第一螺孔123对应的位置设有第二螺孔113，第一螺钉130通过第一螺孔123及第二螺孔113将所述盖板110与所述凹槽腔体120固定。Wherein, four corners of the opening side of the groove cavity 120 are provided with first screw holes 123, and a second screw hole 113 and a first screw 130 are provided on the cover plate 110 at positions corresponding to the first screw holes 123. The cover plate 110 and the groove cavity 120 are fixed through the first screw hole 123 and the second screw hole 113.
本实施例中，所述壳体100为导电外壳，所述谐振器200与所述凹槽121接触并接地。In this embodiment, the case 100 is a conductive case, and the resonator 200 is in contact with the groove 121 and grounded.
结合图5，是本发明滤波器1结构拆分示意图(盖板未示出)，其中，所述凹槽腔体120相对所述绝缘基板300侧四角分别设有第三螺孔124，所述绝缘基板300上与所述第三螺孔124对应的位置设有第四螺孔301，第二螺钉330通过第三螺孔124及第四螺孔301将所述绝缘基板300与 所述凹槽腔体120固定。5 is a schematic structural disassembly diagram of the filter 1 of the present invention (the cover plate is not shown), wherein the groove cavity 120 is provided with third screw holes 124 at four corners of the insulating substrate 300 side. A fourth screw hole 301 is provided on the insulating substrate 300 at a position corresponding to the third screw hole 124, and the second screw 330 connects the insulating substrate 300 and the groove through the third screw hole 124 and the fourth screw hole 301. The cavity 120 is fixed.
谐振信号从所述金属层310一端输入，经过各个所述谐振器200，从所述金属层310的另一端输出，各个所述谐振器200的谐振频率对应所述滤波器1的阻带频率。The resonance signal is input from one end of the metal layer 310, passes through each of the resonators 200, and is output from the other end of the metal layer 310. The resonance frequency of each of the resonators 200 corresponds to the stopband frequency of the filter 1.
其中，所述金属层310为带状金属线。所述金属线为折线结构。The metal layer 310 is a strip-shaped metal wire. The metal wire is a folded line structure.
本实施例中，如图6所示，是本发明滤波器1未经焊接的绝缘基板300的结构示意图，其中，所述金属线为方形波结构。In this embodiment, as shown in FIG. 6, it is a schematic structural diagram of an unsoldered insulating substrate 300 of the filter 1 of the present invention, wherein the metal wire has a square wave structure.
其中，所述谐振器200与所述金属线通过导线210焊接连接，所述导线210穿过所述第一通孔122及所述第二通孔320。Wherein, the resonator 200 and the metal wire are connected by welding with a wire 210, and the wire 210 passes through the first through hole 122 and the second through hole 320.
如图7所示，所述谐振器200与所述金属线相邻两个焊接点311在所述金属线上的距离为d＝λ/4，其中，d为距离，λ为阻带频率所对应的工作波长。As shown in FIG. 7, the distance between the two soldering points 311 adjacent to the resonator 200 and the metal line on the metal line is d = λ / 4, where d is the distance and λ is the stopband frequency. Corresponding working wavelength.
其中，所述金属线的走向与所述谐振器200的轴线方向垂直。The direction of the metal wire is perpendicular to the axial direction of the resonator 200.
请参阅图8，是本发明滤波器1的壳体纵轴剖面结构示意图，沿图4中虚线a纵剖，所述盖板110上对应所述谐振器200处设有第三通孔111，谐振螺栓112通过所述第三通孔111与所述谐振器200连接，通过所述谐振螺栓112调谐所述谐振器200的谐振频率。Please refer to FIG. 8, which is a schematic structural diagram of a longitudinal axis section of a housing of the filter 1 according to the present invention. A longitudinal section along a dotted line a in FIG. 4, a third through hole 111 is provided on the cover plate 110 corresponding to the resonator 200. The resonance bolt 112 is connected to the resonator 200 through the third through hole 111, and the resonance frequency of the resonator 200 is tuned by the resonance bolt 112.
其中，所述谐振器200包括柱状中空导体220及设置于所述柱状中空导体220内的调谐螺杆230，所述谐振螺栓112通过连接所述调谐螺杆230对所述谐振器200的谐振频率进行调谐。The resonator 200 includes a columnar hollow conductor 220 and a tuning screw 230 disposed in the columnar hollow conductor 220. The resonance bolt 112 tunes the resonance frequency of the resonator 200 by connecting the tuning screw 230. .
其中，所述凹槽腔体120为长方形，所述凹槽121沿所述凹槽腔体120的长边依次设置，所述绝缘基板300设置在所述凹槽腔体120的长边上。Wherein, the groove cavity 120 is rectangular, the groove 121 is sequentially disposed along the long side of the groove cavity 120, and the insulating substrate 300 is disposed on the long side of the groove cavity 120.
如图9所示，是本发明带阻滤波器的1仿真波形示意图，结合图7和图8，本实施例中，所述滤波器1包括四个所述谐振器200，通过所述谐振螺栓112对所述谐振螺杆230进行调谐，使四个所述谐振器200得到两种谐振频率，即两两所述谐振器200对应的谐振频率相同，在其他实施例中所述谐振器200的谐振频率可调谐为完全相同、部分相同或完全不相同，由图9可知，阻带点m1对应阻带频率为2.975GHz，阻带 点m2对应阻带频率为2.122GHz。As shown in FIG. 9, it is a schematic diagram of a simulated waveform 1 of the band-rejection filter of the present invention. In conjunction with FIG. 7 and FIG. 8, in this embodiment, the filter 1 includes four of the resonators 200. 112 tune the resonance screw 230 so that the four resonators 200 obtain two resonance frequencies, that is, the resonance frequencies corresponding to the two resonators 200 are the same. In other embodiments, the resonance of the resonator 200 is the same. The frequencies can be tuned to be exactly the same, partially the same or completely different. As can be seen from FIG. 9, the stopband point m1 corresponds to a stopband frequency of 2.975GHz, and the stopband point m2 corresponds to a stopband frequency of 2.122GHz.
请参阅图10，是本发明双工器的结构示意图。所述双工器2包括上述任一项所述的滤波器1。Please refer to FIG. 10, which is a schematic structural diagram of a duplexer according to the present invention. The duplexer 2 includes the filter 1 according to any one of the above.
请参阅图11，是本发明放大器的结构示意图。所述放大器3包括上述任一项所述的滤波器1。Please refer to FIG. 11, which is a schematic structural diagram of an amplifier according to the present invention. The amplifier 3 includes the filter 1 according to any one of the above.
请参阅图12，是本发明通信设备的结构示意图。所述通信设备4包括上述任一项所述的滤波器1。Please refer to FIG. 12, which is a schematic structural diagram of a communication device according to the present invention. The communication device 4 includes the filter 1 according to any one of the above.
本发明通过壳体凹槽腔体的凹槽内设有谐振器，凹槽腔体一面设有带有方形波金属线的绝缘基板，所述谐振器通过设置在所述凹槽腔体上的第一通孔与所述绝缘基板上的第二通孔与所述金属线电性连接，所述盖板上对应所述谐振器处设有第三通孔，谐振螺栓通过所述第三通孔与所述谐振器连接，通过调谐螺杆调谐所述谐振器的谐振频率使得所述滤波器对对应谐振频率进行阻带，本发明滤波器综合了微带和腔体带阻滤波器各自的优点，实现了加工方便，体积小，易调试的目的；尤其对比带阻腔体滤波器而言，采用金属线基板即信号线基板显然比带阻腔体滤波器中的信号线缆占用空间少，并且由于基板的可贴片性使得滤波器整体设计局限性得以突破。According to the present invention, a resonator is provided in a groove of a groove cavity of a housing, and an insulating substrate with a square wave metal wire is provided on one side of the groove cavity. A first through hole is electrically connected to a second through hole on the insulating substrate and the metal wire, a third through hole is provided on the cover corresponding to the resonator, and a resonant bolt passes through the third through The hole is connected to the resonator, and the resonance frequency of the resonator is tuned by a tuning screw so that the filter stops the corresponding resonance frequency. The filter of the present invention combines the advantages of the microstrip and cavity band-stop filters. , To achieve the purpose of convenient processing, small size, and easy debugging; especially compared to the band-elimination cavity filter, the use of a metal wire substrate, that is, the signal line substrate, obviously takes up less space than the signal cable in the band-elimination cavity filter. And because of the patchability of the substrate, the overall design limitations of the filter can be broken.
以上所述仅为本发明的实施方式，并非因此限制本发明的专利范围，凡是利用本发明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，均同理包括在本发明的专利保护范围内。The above description is only an embodiment of the present invention, and thus does not limit the scope of the patent of the present invention. Any equivalent structure or equivalent process transformation made by using the description and drawings of the present invention, or directly or indirectly applied to other related technologies The same applies to the fields of patent protection of the present invention.

Claims (20)

  1. 一种滤波器，其中，包括：A filter, including:
    壳体，包括盖板及凹槽腔体，所述盖板设置于所述凹槽腔体开口侧，所述凹槽腔体包括至少两凹槽，每一所述凹槽的一侧壁设有贯穿所述凹槽侧壁的第一通孔；The housing includes a cover plate and a groove cavity. The cover plate is disposed on the open side of the groove cavity. The groove cavity includes at least two grooves. A side wall of each groove is provided. A first through hole penetrating through the sidewall of the groove;
    至少两谐振器，分别设置于所述至少两凹槽内，所述谐振器与所述凹槽接触；At least two resonators are respectively disposed in the at least two grooves, and the resonators are in contact with the grooves;
    对应所述第一通孔的所述凹槽腔体上设有一绝缘基板，所述绝缘基板上远离所述凹槽腔体的一面设有金属层，用于传输信号，所述绝缘基板上对应所述第一通孔的位置设有第二通孔；An insulating substrate is provided on the groove cavity corresponding to the first through hole, and a metal layer is provided on a side of the insulating substrate away from the groove cavity for transmitting signals. The insulating substrate corresponds to A position of the first through hole is provided with a second through hole;
    所述谐振器通过所述第一通孔及第二通孔与所述金属层电性连接。The resonator is electrically connected to the metal layer through the first through hole and the second through hole.
  2. 根据权利要求1所述滤波器，其中，所述金属层为带状金属线；所述金属线为折线结构；所述金属线为方形波结构。The filter according to claim 1, wherein the metal layer is a strip-shaped metal line; the metal line is a folded line structure; and the metal line is a square wave structure.
  3. 根据权利要求1所述滤波器，其中，所述凹槽腔体开口侧四角分别设有第一螺孔，所述盖板上与所述第一螺孔对应的位置设有第二螺孔，第一螺钉通过第一螺孔及第二螺孔将所述盖板与所述凹槽腔体固定。The filter according to claim 1, wherein the four corners of the opening side of the groove cavity are respectively provided with first screw holes, and the cover plate is provided with second screw holes at positions corresponding to the first screw holes, The first screw fixes the cover plate and the groove cavity through the first screw hole and the second screw hole.
  4. 根据权利要求1所述滤波器，其中，所述凹槽腔体相对所述绝缘基板侧的四角分别设有第三螺孔，所述绝缘基板上与所述第三螺孔对应的位置设有第四螺孔，第二螺钉通过第三及第四螺孔将所述绝缘基板与所述凹槽腔体固定。The filter according to claim 1, wherein a third screw hole is provided at each of four corners of the groove cavity opposite to the insulating substrate side, and a position corresponding to the third screw hole is provided on the insulating substrate. The fourth screw hole and the second screw fix the insulating substrate and the groove cavity through the third and fourth screw holes.
  5. 根据权利要求2所述滤波器，其中，所述谐振器与所述金属线通过导线焊接连接，所述导线穿过第一通孔及所述第二通孔。The filter according to claim 2, wherein the resonator and the metal wire are connected by welding with a wire, and the wire passes through the first through hole and the second through hole.
  6. 根据权利要求5所述滤波器，其中，所述谐振器与所述金属线相邻两个焊接点在所述金属线上的距离为d＝λ/4，其中，d为距离，λ为阻带频率所对应的工作波长。The filter according to claim 5, wherein the distance between the two soldering points adjacent to the resonator and the metal line on the metal line is d = λ / 4, where d is the distance and λ is the resistance The operating wavelength corresponding to the band frequency.
  7. 根据权利要求2所述滤波器，其中，所述金属线的走向与所述谐振器的轴线方向垂直。The filter according to claim 2, wherein a direction of the metal wire is perpendicular to an axial direction of the resonator.
  8. 根据权利要求1所述滤波器，其中，所述盖板上对应所述谐振器处设有第三通孔，谐振螺栓通过所述第三通孔与所述谐振器连接，通过所述谐振螺栓调谐所述谐振器的谐振频率；The filter according to claim 1, wherein a third through hole is provided on the cover plate corresponding to the resonator, and a resonance bolt is connected to the resonator through the third through hole, and is connected through the resonance bolt Tuning a resonance frequency of the resonator;
  9. 根据权利要求8所述滤波器，其中，所述谐振器包括柱状中空导体及设置于所述柱状中空导体内的调谐螺杆，所述谐振螺栓通过连接所述调谐螺杆对所述谐振器的谐振频率进行调谐。The filter according to claim 8, wherein the resonator includes a cylindrical hollow conductor and a tuning screw provided in the cylindrical hollow conductor, and the resonant bolt connects the resonant frequency of the resonator to the resonator by connecting the tuning screw. Perform tuning.
  10. 根据权利要求1所述滤波器，其中，所述凹槽腔体为长方形，所述凹槽沿所述凹槽腔体的长边依次设置，所述绝缘基板设置在所述凹槽腔体的长边上。The filter according to claim 1, wherein the groove cavity is rectangular, the grooves are sequentially arranged along the long side of the groove cavity, and the insulating substrate is provided in the groove cavity. On the long side.
  11. 一种双工器，其中，所述双工器包括滤波器，所述滤波器包括：A duplexer, wherein the duplexer includes a filter, and the filter includes:
    壳体，包括盖板及凹槽腔体，所述盖板设置于所述凹槽腔体开口侧，所述凹槽腔体包括至少两凹槽，每一所述凹槽的一侧壁设有贯穿所述凹槽侧壁的第一通孔；The housing includes a cover plate and a groove cavity. The cover plate is disposed on the open side of the groove cavity. The groove cavity includes at least two grooves. A side wall of each groove is provided. A first through hole penetrating through the sidewall of the groove;
    至少两谐振器，分别设置于所述至少两凹槽内，所述谐振器与所述凹槽接触；At least two resonators are respectively disposed in the at least two grooves, and the resonators are in contact with the grooves;
    对应所述第一通孔的所述凹槽腔体上设有一绝缘基板，所述绝缘基板上远离所述凹槽腔体的一面设有金属层，用于传输信号，所述绝缘基板上对应所述第一通孔的位置设有第二通孔；An insulating substrate is provided on the groove cavity corresponding to the first through hole, and a metal layer is provided on a side of the insulating substrate away from the groove cavity for transmitting signals. The insulating substrate corresponds to A position of the first through hole is provided with a second through hole;
    所述谐振器通过所述第一通孔及第二通孔与所述金属层电性连接。The resonator is electrically connected to the metal layer through the first through hole and the second through hole.
  12. 根据权利要求11所述双工器，其中，所述金属层为带状金属线；所述金属线为折线结构；所述金属线为方形波结构；The duplexer according to claim 11, wherein the metal layer is a strip-shaped metal wire; the metal wire is a folded line structure; and the metal wire is a square wave structure;
    所述谐振器与所述金属线通过导线焊接连接，所述导线穿过第一通孔及所述第二通孔；The resonator and the metal wire are connected by welding with a wire, and the wire passes through the first through hole and the second through hole;
    所述金属线的走向与所述谐振器的轴线方向垂直；A direction of the metal wire is perpendicular to an axial direction of the resonator;
    所述谐振器与所述金属线相邻两个焊接点在所述金属线上的距离为d＝λ/4，其中，d为距离，λ为阻带频率所对应的工作波长。The distance between the two soldering points adjacent to the resonator and the metal line on the metal line is d = λ / 4, where d is the distance and λ is the working wavelength corresponding to the stopband frequency.
  13. 根据权利要求11所述双工器，其中，所述凹槽腔体开口侧四角分别设有第一螺孔，所述盖板上与所述第一螺孔对应的位置设有第二螺孔，第一螺钉通过第一螺孔及第二螺孔将所述盖板与所述凹槽腔体固 定。The duplexer according to claim 11, wherein the four corners of the open side of the groove cavity are provided with first screw holes, and the cover plate is provided with second screw holes at positions corresponding to the first screw holes. A first screw fixes the cover plate and the groove cavity through a first screw hole and a second screw hole.
  14. 根据权利要求11所述双工器，其中，所述凹槽腔体相对所述绝缘基板侧的四角分别设有第三螺孔，所述绝缘基板上与所述第三螺孔对应的位置设有第四螺孔，第二螺钉通过第三及第四螺孔将所述绝缘基板与所述凹槽腔体固定。The duplexer according to claim 11, wherein the groove cavity is provided with a third screw hole at each of four corners of the insulating substrate side, and the insulating substrate is provided at a position corresponding to the third screw hole. There is a fourth screw hole, and a second screw fixes the insulating substrate and the groove cavity through the third and fourth screw holes.
  15. 根据权利要求11所述双工器，其中，所述盖板上对应所述谐振器处设有第三通孔，谐振螺栓通过所述第三通孔与所述谐振器连接，通过所述谐振螺栓调谐所述谐振器的谐振频率；The duplexer according to claim 11, wherein a third through hole is provided on the cover plate corresponding to the resonator, and a resonance bolt is connected to the resonator through the third through hole and through the resonance The bolt tunes the resonance frequency of the resonator;
    所述谐振器包括柱状中空导体及设置于所述柱状中空导体内的调谐螺杆，所述谐振螺栓通过连接所述调谐螺杆对所述谐振器的谐振频率进行调谐；The resonator includes a columnar hollow conductor and a tuning screw provided in the columnar hollow conductor, and the resonance bolt tunes the resonance frequency of the resonator by connecting the tuning screw;
    所述凹槽腔体为长方形，所述凹槽沿所述凹槽腔体的长边依次设置，所述绝缘基板设置在所述凹槽腔体的长边上。The groove cavity is rectangular, the grooves are sequentially arranged along the long side of the groove cavity, and the insulating substrate is disposed on the long side of the groove cavity.
  16. 一种通信设备，其中，所述通信设备包括滤波器，所述滤波器包括：A communication device, wherein the communication device includes a filter, and the filter includes:
    壳体，包括盖板及凹槽腔体，所述盖板设置于所述凹槽腔体开口侧，所述凹槽腔体包括至少两凹槽，每一所述凹槽的一侧壁设有贯穿所述凹槽侧壁的第一通孔；The housing includes a cover plate and a groove cavity. The cover plate is disposed on the open side of the groove cavity. The groove cavity includes at least two grooves. A side wall of each groove is provided. A first through hole penetrating through the sidewall of the groove;
    至少两谐振器，分别设置于所述至少两凹槽内，所述谐振器与所述凹槽接触；At least two resonators are respectively disposed in the at least two grooves, and the resonators are in contact with the grooves;
    对应所述第一通孔的所述凹槽腔体上设有一绝缘基板，所述绝缘基板上远离所述凹槽腔体的一面设有金属层，用于传输信号，所述绝缘基板上对应所述第一通孔的位置设有第二通孔；An insulating substrate is provided on the groove cavity corresponding to the first through hole, and a metal layer is provided on a side of the insulating substrate away from the groove cavity for transmitting signals. The insulating substrate corresponds to A position of the first through hole is provided with a second through hole;
    所述谐振器通过所述第一通孔及第二通孔与所述金属层电性连接。The resonator is electrically connected to the metal layer through the first through hole and the second through hole.
  17. 根据权利要求16所述通信设备，其中，所述金属层为带状金属线；所述金属线为折线结构；所述金属线为方形波结构；The communication device according to claim 16, wherein the metal layer is a strip-shaped metal line; the metal line is a folded line structure; and the metal line is a square wave structure;
    所述谐振器与所述金属线通过导线焊接连接，所述导线穿过第一通孔及所述第二通孔；The resonator and the metal wire are connected by welding with a wire, and the wire passes through the first through hole and the second through hole;
    所述金属线的走向与所述谐振器的轴线方向垂直；A direction of the metal wire is perpendicular to an axial direction of the resonator;
    所述谐振器与所述金属线相邻两个焊接点在所述金属线上的距离为d＝λ/4，其中，d为距离，λ为阻带频率所对应的工作波长。The distance between the two soldering points adjacent to the resonator and the metal line on the metal line is d = λ / 4, where d is the distance and λ is the working wavelength corresponding to the stopband frequency.
  18. 根据权利要求16所述通信设备，其中，所述凹槽腔体开口侧四角分别设有第一螺孔，所述盖板上与所述第一螺孔对应的位置设有第二螺孔，第一螺钉通过第一螺孔及第二螺孔将所述盖板与所述凹槽腔体固定。The communication device according to claim 16, wherein four corners of the opening side of the groove cavity are respectively provided with first screw holes, and the cover plate is provided with second screw holes at positions corresponding to the first screw holes, The first screw fixes the cover plate and the groove cavity through the first screw hole and the second screw hole.
  19. 根据权利要求16所述通信设备，其中，所述凹槽腔体相对所述绝缘基板侧的四角分别设有第三螺孔，所述绝缘基板上与所述第三螺孔对应的位置设有第四螺孔，第二螺钉通过第三及第四螺孔将所述绝缘基板与所述凹槽腔体固定。The communication device according to claim 16, wherein a third screw hole is provided at each of four corners of the groove cavity opposite to the side of the insulating substrate, and a position corresponding to the third screw hole on the insulating substrate is provided The fourth screw hole and the second screw fix the insulating substrate and the groove cavity through the third and fourth screw holes.
  20. 根据权利要求16所述通信设备，其中，所述盖板上对应所述谐振器处设有第三通孔，谐振螺栓通过所述第三通孔与所述谐振器连接，通过所述谐振螺栓调谐所述谐振器的谐振频率；The communication device according to claim 16, wherein a third through hole is provided on the cover plate corresponding to the resonator, and a resonance bolt is connected to the resonator through the third through hole, and is connected to the resonator through the resonance bolt Tuning a resonance frequency of the resonator;
    所述谐振器包括柱状中空导体及设置于所述柱状中空导体内的调谐螺杆，所述谐振螺栓通过连接所述调谐螺杆对所述谐振器的谐振频率进行调谐；The resonator includes a columnar hollow conductor and a tuning screw provided in the columnar hollow conductor, and the resonance bolt tunes the resonance frequency of the resonator by connecting the tuning screw;
    所述凹槽腔体为长方形，所述凹槽沿所述凹槽腔体的长边依次设置，所述绝缘基板设置在所述凹槽腔体的长边上。The groove cavity is rectangular, the grooves are sequentially arranged along the long side of the groove cavity, and the insulating substrate is disposed on the long side of the groove cavity.
PCT/CN2018/099675 2018-08-09 2018-08-09 Filter, duplexer, and communication device WO2020029183A1 (en)

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