WO2018103102A1 - 滤波装置 - Google Patents

滤波装置 Download PDF

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Publication number
WO2018103102A1
WO2018103102A1 PCT/CN2016/109315 CN2016109315W WO2018103102A1 WO 2018103102 A1 WO2018103102 A1 WO 2018103102A1 CN 2016109315 W CN2016109315 W CN 2016109315W WO 2018103102 A1 WO2018103102 A1 WO 2018103102A1
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WO
WIPO (PCT)
Prior art keywords
resonant
housing
filtering device
resonant conductor
cavity
Prior art date
Application number
PCT/CN2016/109315
Other languages
English (en)
French (fr)
Inventor
邓良勇
蔡丹涛
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN202110169132.7A priority Critical patent/CN113013563A/zh
Priority to BR112019011298-7A priority patent/BR112019011298B1/pt
Priority to CN201680091127.6A priority patent/CN109983617B/zh
Priority to EP16923504.1A priority patent/EP3537534A4/en
Priority to PCT/CN2016/109315 priority patent/WO2018103102A1/zh
Publication of WO2018103102A1 publication Critical patent/WO2018103102A1/zh
Priority to US16/435,552 priority patent/US11043724B2/en
Priority to US17/325,958 priority patent/US11664563B2/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
    • 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
    • H01P1/201—Filters for transverse electromagnetic waves
    • H01P1/203—Strip line filters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/18—Phase-shifters
    • H01P1/184—Strip line phase-shifters
    • 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
    • H01P1/201—Filters for transverse electromagnetic waves
    • H01P1/203—Strip line filters
    • H01P1/2039—Galvanic coupling between Input/Output
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P7/00—Resonators of the waveguide type
    • H01P7/08—Strip line resonators
    • H01P7/088—Tunable resonators

Definitions

  • the embodiments of the present application relate to the field of communications technologies, and in particular, to a filtering device.
  • Filters are widely used in microwave communication, radar navigation, electronic countermeasures, satellite communications, missile guidance, test instruments and other systems. With the development of communication, the selectivity of the system to the channel is getting higher and higher, which puts higher requirements on the design of the filter. At the same time, the filter is an important part of the communication system, and its performance has a great influence on the quality of the communication system.
  • a filter is a device with a frequency selective action that allows specific frequency components in a signal to pass while greatly attenuating other frequency components to filter out interference.
  • filters There are many types of filters, and the cavity filter has a wide range of applications in various communication systems due to its high power, low loss, robust structure and use in the microwave frequency band. Moreover, the communication frequency band is increasing, the working bandwidth is wider and wider, and the advantages of the cavity filter are more and more obvious.
  • the performance and reliability of the cavity filter are strongly related to its own structure.
  • the existing cavity filter includes a cavity, a cover plate and a tuning screw.
  • the cover plate is generally fastened to the cavity by screws, and the degree of fastening is uncontrollable, directly affecting the filter frequency selectivity.
  • the tuning screw is mounted on the cover plate, and it is time consuming to adjust the resonance characteristics of the filter by screwing the tuning screw.
  • the assembly and tuning process of the filter is complicated.
  • the embodiment of the present application provides a filtering device, in order to effectively simplify the assembly and tuning process.
  • a filtering apparatus comprising:
  • a housing having an inner cavity
  • Pressing element one end is placed on the housing, the other end is suspended, corresponding to the position of the open end of the resonant conductor, and the resonant frequency is adjusted by pressing or pulling to change the distance between the pressing element and the resonant conductor .
  • the filtering device further includes:
  • a cavity terminal for electrically connecting the short-circuited end of the resonant conductor to the housing and for supporting the resonant conductor.
  • the resonant conductor is built in the cavity by plugging and unplugging.
  • the resonant conductor is built into the inner cavity vertically or horizontally.
  • the resonant conductor is a metal strip or microstrip or stripline or printed circuit board PCB.
  • the housing has at least one inner cavity into which the at least one resonant conductor is placed. Electrical connections are made between the resonant conductors in different cavities using metal pins or metal probes or printed circuit boards.
  • the pressing element is a metal sheet structure.
  • the pressing element may also be a metal nail structure.
  • the filtering device further includes:
  • a fixed terminal placed outside the housing, is used to secure the filter unit.
  • a wiring port placed outside the housing for connecting wires.
  • the above-mentioned pressing member or cavity terminal or fixed terminal or wiring port is integrally formed with the housing, such as a profile housing or an integrated model.
  • the pressing member or the cavity terminal or the fixed terminal or the wiring port is not integrally formed with the housing, such as the above-mentioned component being attached to the housing by soldering.
  • the cumbersome steps of installing the cover and the wall can be omitted by the housing provided by the present application.
  • the resonant conductor is inserted into the inner cavity of the housing to facilitate adjustment or replacement of the resonant conductor.
  • the housing is tightly connected, and the resonance is adjusted by pressing or drawing.
  • the frequency simplifies the means of tuning.
  • the filtering device provided by the present application can be found to effectively simplify the assembly and tuning process.
  • FIG. 1 is a schematic structural diagram of a filter 100 provided by a prior art according to an embodiment of the present application;
  • FIG. 2 is a schematic structural diagram of a filtering apparatus 200 according to an embodiment of the present application.
  • FIG. 3 is a schematic structural diagram of a filtering apparatus 300 according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic structural diagram of a resonant conductor 400 according to an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a pressing element according to an embodiment of the present application.
  • FIG. 6 is a schematic structural view of another pressing element provided by an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of a filtering apparatus 700 according to an embodiment of the present application.
  • Multiple means two or more. "and/or”, describing the association relationship of the associated objects, indicating that there may be three relationships, for example, A and/or B, which may indicate that there are three cases where A exists separately, A and B exist at the same time, and B exists separately.
  • the character "/" generally indicates that the contextual object is an "or" relationship.
  • FIG. 1 is a schematic structural diagram of a filter 100 provided by the prior art.
  • the prior art filter 100 as shown in FIG. 1, includes a cavity 101, a cover plate 102, a support member 104, a resonant element 105, a set screw 106, a tuning mast 107, and the like.
  • the cavity 101 has one or more resonant single cavities 103 therein.
  • the cavity 101 can be formed into an integrated device by machine or die casting, and the cover plate 102 is formed by die casting or using a forming plate machine.
  • the support member 104 is first assembled into a component fixed inside the cavity 101, and the secondary resonant element 105 is fixed at a center position of the resonant single cavity 103 of the cavity 101 to constitute a resonance unit, and then the tuning mast 107 is fixed to the cover plate 102. Finally, the assembled cover assembly and the cavity assembly are assembled together by a set screw 106.
  • the processing and assembly process of the existing filter is relatively complicated, and the resonance performance of the filter is affected by the degree of fastening between the cover plate 102 and the cavity 101, and is also affected by the stability of the grounding of the tuning mast 107. Moreover, the purpose of tuning by screwing the tuning screw 107 is relatively time consuming.
  • the embodiment of the present application provides a filter (also referred to as a filtering device) that can simplify the assembly process and the tuning process, and can effectively improve the filtering performance of the filter.
  • the filtering device provided by the embodiment of the present application can be applied to various communication systems, such as a Global System for Mobile Communications (GSM) system, a general packet radio service (GPRS, General Packet Radio Service) system, and the like; Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), 3G communication systems such as Wideband Code Division Multiple Access (WCDMA); Long Term Evolution ( LTE (Long Term Evolution) system and LTE subsequent evolution system.
  • GSM Global System for Mobile Communications
  • GPRS General Packet Radio Service
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • LTE Long Term Evolution
  • LTE Long Term Evolution
  • the filtering device provided by the embodiment of the present application can be applied to various communication devices that need to perform signal frequency selection, for example, can be used in a base station device.
  • FIG. 2 is a schematic structural diagram of a filtering apparatus 200 according to an embodiment of the present application.
  • the filtering device 200 includes:
  • the housing 210 has an inner cavity.
  • the resonant conductor 220 is built in the inner cavity.
  • the pressing member 230 is disposed at one end on the housing, the other ends are suspended, the pressing member 230 is corresponding to the position of the open end of the resonant conductor, and the distance between the pressing member 230 and the resonant conductor 220 is changed by pressing or pulling the pressing member 230. To adjust the resonant frequency.
  • the filtering device further includes a cavity terminal 240 for electrically connecting the short-circuited end of the resonant conductor to the housing and for supporting the resonant conductor.
  • a cavity terminal 240 for electrically connecting the short-circuited end of the resonant conductor to the housing and for supporting the resonant conductor.
  • other alternative support members may be employed to electrically connect the resonant conductor to the housing by soldering.
  • the cover plate does not need to be assembled, the assembly process of the filtering device is simple, and the influence of the cover assembly on the performance of the filtering device is also reduced.
  • the tuning can be achieved by pressing or pulling the pressing member 230, simplifying the tuning process and shortening the tuning time.
  • FIG. 3 is a schematic structural diagram of the filtering device 300 .
  • the filter device may further include:
  • a fixed terminal 350 is disposed outside the casing for fixing the filtering device.
  • a wiring port 360 placed outside the housing for connecting wires.
  • the filter has a fixed terminal and a wiring port, and the filter device can be conveniently fixed on other devices, and at the same time, it is convenient to connect the input or output wires of the signal.
  • the embodiment of the present application provides a schematic diagram of a resonant conductor 400 to further describe the structure of the resonant conductor 400.
  • the resonant conductor 400 includes:
  • the open end 410 is for adjusting the resonance characteristic in cooperation with the pressing member.
  • the shorting terminal 420 is used for current grounding. Alternatively, the current can be grounded through the cavity terminal.
  • the terminal 430 is used to connect the wire output signal or the input signal, and can also be used to connect the wiring port, such as the wiring port 360 in FIG. .
  • the resonant conductor 400 can be built in the inner cavity of the filtering device by plugging and unplugging. As shown in Figure 2 or In the filtering device shown in FIG. 3, the resonant conductor is horizontally built into the inner cavity. Alternatively, the resonant conductor can also be vertically embedded in the inner cavity, and details are not described herein.
  • the resonant conductor 400 in the figure is only an example, and the number of open ends, the number of short terminals, and the number of terminals are not limited herein.
  • the resonant conductor 400 is a conductor having a resonant performance, such as a metal strip or a microstrip line or a strip line or a printed circuit board (PCB), and the specific implementation form of the resonant conductor is not limited herein.
  • FIG. 5 is a schematic structural diagram of a pressing member according to an embodiment of the present application to further describe the structure of the pressing member 510.
  • the pressing member 510 has a sheet-like structure, one end is placed on the housing 510, and the other three ends are suspended.
  • FIG. 6 is a schematic diagram of another pressing element provided by the present application.
  • the pressing member 600 is a nail-like structure, and includes a nail cap 620 and a nail rod 630.
  • the nail cap 620 of the nail-like structure is connected to the housing 610 of the filter device, and the nail-shaped nail rod 630 is inserted into the shell. In the lumen of the body.
  • FIG. 7 is a schematic structural diagram of another filtering apparatus 700 according to an embodiment of the present application.
  • the housing of the filtering device 700 has two lumens, such as the lumen 710 and the lumen 720 of FIG.
  • Each of the inner cavities is provided with a resonant conductor, that is, the inner cavity 710 has a resonant conductor 730 built therein, and the inner cavity 720 has a resonant conductor 740 built therein.
  • Other components such as pressing members, cavity terminals, and the like, are described with reference to FIG. 2 and will not be described herein.
  • electrical connections may be made between the resonant conductors in the plurality of internal cavities. Electrical connections are made, for example, by metal pins or metal probes or printed circuit board PCBs. For example, metal pins or metal probes may be used between the resonant conductor 730 and the resonant conductor 740 in FIG. The head or PCB is electrically connected.
  • each of the inner cavities may be provided with a plurality of resonant conductors, and details are not described herein. .
  • the above-described pressing member or cavity terminal or fixed terminal or wiring port may be integrally formed with the housing.
  • the advantage of one-piece molding is that the grounding characteristics of the components or terminals or ports are good.
  • the pressing member or the cavity terminal or the fixed terminal or the wiring port is not integrally formed with the housing, for example, by soldering to the housing, and the advantage of the non-integral molding is that the component or the terminal or the port can be It is highly replaceable, that is, if it is damaged, it is operability to replace the new replacement parts.

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Abstract

本申请实施例提供滤波装置，以期有效的简化装配及调谐工艺。该滤波器包括：壳体，具有内腔；谐振导体，具有谐振功能，内置于所述内腔；按压元件，一端置于壳体上，其他端悬空，正对应于所述谐振导体的开路端的位置，通过按压或者拉拔改变所述按压元件与所述谐振导体之间的距离来调节谐振频率。本申请实施例提供的滤波装置可适用于多种需要进行信号频率选择的通信设备。

Description

滤波装置 技术领域
本申请实施例涉及通信技术领域，尤其涉及滤波装置。
背景技术
滤波器被广泛的应用于微波通信、雷达导航，电子对抗、卫星通信、导弹制导、测试仪表等系统中。随着通信的发展，系统对通道的选择性越来越高，这就对滤波器的设计提出了更高的要求。同时滤波器作为通信系统的重要部分，其性能优劣对通信系统的质量有很大的影响。
滤波器是一种具有频率选择作用的装置，可以使信号中特定的频率成分通过，同时极大地衰减其它频率成分，从而滤除干扰。滤波器的种类很多，其中腔体滤波器因其高功率，损耗低，结构坚固且可用于微波频段等特点，在各种通信系统中有着极为广泛的应用。且通信频段日益提高，工作带宽越来越宽，腔体滤波器的优势越来越明显。
腔体滤波器的性能指标及可靠性与自身的结构强相关，现有的腔体滤波器包括腔体、盖板和调谐螺钉。盖板一般是通过螺钉紧固在腔体上，其紧固的程度是不可控的，直接影响滤波器频率选择性。且调谐螺钉安装在盖板上，通过旋拧调谐螺钉来调节滤波器的谐振特性比较费时间。滤波器的装配及调谐工艺复杂。
发明内容
有鉴于此，本申请实施例提供一种滤波装置，以期有效的简化装配及调谐工艺。
第一方面，提供了一种滤波装置，其特征在于，包括：
壳体，具有内腔；
谐振导体，置于所述内腔；
按压元件，一端置于壳体上，其他端悬空，正对应于所述谐振导体的开路端得位置，通过按压或者拉拔改变所述按压元件与所述谐振导体之间的距离来调节谐振频率。
可选的，滤波装置还包括：
腔体端子，用于将谐振导体的短路端与壳体电连接，还用于支撑谐振导体。
进一步的，谐振导体通过插拔的方式内置于腔体。谐振导体垂直的或者水平的内置于内腔。
可选的，谐振导体为金属带线或者微带线或者带状线或者印刷电路板PCB。
可选的，壳体具有至少一个内腔，内腔置入至少一个谐振导体。不同腔体中的谐振导体之间采用金属插针或者金属探头或者印刷电路板实现电连接。
可选的，按压元件是金属片状结构，可选的，按压元件还可以是金属钉状结构。
可选的，滤波装置还包括：
固定端子，置于壳体外侧，用于固定滤波装置。
接线端口，置于壳体外侧，用于连接导线。
以上所述的按压元件或者腔体端子或者固定端子或者接线端口，与壳体一体成型，如采用型材壳体或者一体的模型。
可选的，按压元件或者腔体端子或者固定端子或者接线端口，与壳体不是一体成型的，如可以通过焊接的方式将上述的部件接与壳体上。
可见，通过本申请提供的壳体，可以省去安装盖板与墙体的繁琐步骤。谐振导体插拔于壳体的内腔，方便了谐振导体的调整或者更换。通过本申请提供的按压元件，与壳体连接紧密，通过按压或者拉拔的方式调节谐振 频率，简化了调谐的手段。综上，可以发现本申请提供的滤波装置有效的简化装配及调谐工艺。
附图说明
为了更清楚地说明本申请实施例的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本申请实施例现有技术提供的一种滤波器100结构示意图；
图2是本申请实施例提供的滤波装置200的结构示意图；
图3是本申请实施例提供的滤波装置300的结构示意图；
图4是本申请实施例提供的一种谐振导体400的结构示意图；
图5是本申请实施例提供的一种按压元件的结构示意图；
图6是本申请实施例提供的另一种按压元件的结构示意图；
图7是本申请实施例提供的一种滤波装置700的结构示意图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。
以上，对本申请中的用语进行说明，便于本领域技术人员理解。
请参考图1，其为现有技术提供的一种滤波器100结构示意图。现有技术中的滤波器100，如图1所示，包括：腔体101，盖板102，支撑件104，谐振元件105，固定螺钉106，和调谐镙杆107等等。腔体101内具有一个或多个谐振单腔103。腔体101可以通过机加或压铸方式形成一体化器件，盖板102通过压铸或使用成型板材机加而成。装配时，先将支撑件104装配成组件固定在腔体101内部,其次谐振元件105固定在腔体101的谐振单腔103的中心位置构成谐振单元，然后将调谐镙杆107固定在盖板102上，最后通过固定螺钉106将装配好的盖板组件和腔体组件组装在一起。
可见，现有滤波器的加工及装配工艺比较复杂，滤波器的谐振性能会受到盖板102和腔体101之间紧固程度的影响，也会受到调谐镙杆107接地的稳定性的影响。且通过旋拧调谐螺杆107来达到调谐的目的比较费时。
有鉴于此，本申请实施例提供了一种可以简化装配工艺和调谐工艺的滤波器(又称为滤波装置)，同时可以有效的提高滤波器的滤波性能。
本申请实施例提供的滤波装置，可适用于多种通信系统，例如全球移动通信系统(GSM，Global System for Mobile communications)，通用分组无线业务(GPRS，General Packet Radio Service)系统等2G通信系统；码分多址(CDMA，Code Division Multiple Access)系统，时分多址(TDMA，Time Division Multiple Access)系统，宽带码分多址(WCDMA，Wideband Code Division Multiple Access Wireless)等3G通信系统；长期演进(LTE，Long Term Evolution)系统以及LTE后续演进系统等。
本申请实施例提供的滤波装置可适用于多种需要进行信号频率选择的通信设备，例如可以在基站设备中使用。
图2所示为本申请实施例提供的一种滤波装置200的结构示意图。该滤波装置200包括：
壳体210，具有内腔。
谐振导体220，内置于所述内腔。
按压元件230，一端设置于壳体上，其他端悬空，按压元件230正对应于所述谐振导体的开路端的位置，通过按压或者拉拔按压元件230改变按压元件230与谐振导体220之间的距离来调节谐振频率。
可选的，如图2所示，滤波装置还包括腔体端子240，用于将所述谐振导体的短路端与壳体进行电连接，还用于支撑所述谐振导体。当图2所示的滤波装置没有腔体端子240时，可以采用其他可替代的支撑元件，通过焊接的方式将谐振导体与壳体进行电连接。
采用以上结构，滤波装置的装配过程中，不需要再装配盖板，滤波装置的装配工艺简单，同时也就减少了盖板装配对滤波装置性能的影响。且，通过按压或者拉拔按压元件230就可以达到调谐的目的，简化了调谐的过程，缩短了调谐时间。
可选的，请参考图3，其为滤波装置300的结构示意图。如图3所示，除了如图2所示的滤波装置所包括的壳体310，谐振导体320和按压元件330，以及可选的包括腔体端子340以外，滤波器装置还可以包括：
固定端子350，置于所述壳体外侧，用于固定所述滤波装置。
接线端口360，置于所述壳体外侧，用于连接导线。
可见，滤波器有了固定端子和接线端口，可以很方便的将滤波装置固定在其他设备上，同时还便于连接信号的输入或者输出导线。
下面结合图4，其本申请实施例提供一种谐振导体400的示意图，来进一步描述谐振导体400的结构。如图4所示，该谐振导体400包括：
开路端410，用于配合按压元件调节谐振特性。
短路端420，用于电流接地，可选的，可以通过腔体端子电流接地。
接线端430，用于连接导线输出信号或者输入信号，还可以用于连接接线端口，如图3中的接线端口360。。
谐振导体400可以通过插拔的方式内置于滤波装置的内腔。如图2或 者图3所示的滤波装置，谐振导体是水平的内置于内腔的，可选的，谐振导体还可以垂直的内置于内腔，此处不再赘述。
需要说明的是，图中的谐振导体400只是示例，此处对开路端个数、短路端个数及接线端的个数不做限制。谐振导体400是具有谐振性能的导体，如，可以是金属带线或者微带线或者带状线或者印刷电路板(printed circuit board，PCB)，此处对谐振导体的具体实现形式不做限制。
下面结合图5，其为本申请实施例提供的一种按压元件的结构示意图，来进一步描述按压元件510的结构。如图5所示，在本实施例中按压元件510为片状结构，一端置于壳体510上，其他三端悬空。
请继续参考图6，其为本申请提供的另一种按压元件示意图。如图6所示，按压元件600为图钉状结构，包括钉帽620和钉杆630，通过图钉状结构的钉帽620与滤波装置的壳体610相连接，图钉状的钉杆630探入壳体的内腔中。
需要说明的是，以上按压元件只是示例，本申请对按压元件的具体形状不做限制，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。任何通过按压或者拉拔按压元件来调节谐振特性，都属于本申请的保护范围。
以上实施例所示的滤波装置以壳体具有一个内腔为例。可选的，壳体可以具有多个内腔，如合路器。请参考图7，其为本申请实施例提供的另一种滤波装置700的结构示意图。如图7所示，滤波装置700的壳体具有两个内腔，如图7中的内腔710和内腔720。每个内腔置入一个谐振导体，即内腔710内置谐振导体730，内腔720内置谐振导体740。其他的部件，例如按压元件，腔体端子等参考图2，此处不再赘述。
当壳体具有多个内腔时，多个内腔中的谐振导体之间可以进行电连接。例如通过金属插针或者金属探头或者印刷电路板PCB实现电连接。例如，图7中的谐振导体730和谐振导体740之间可以采用金属插针或者金属探 头或者PCB实现电连接。
需要说明的是，在以上实施例的滤波装置700中，仅示例了每个内腔置入一个谐振导体的情况，可选的每个内腔可以置入多个谐振导体，此处不再赘述。
无论单个壳体具有一个内腔或者多个内腔的滤波装置，上述的按压元件或者腔体端子或者固定端子或者接线端口，与壳体可以是一体成型的。一体成型的好处是，元件或者端子或者端口的接地特性好。
可选的，按压元件或者腔体端子或者固定端子或者接线端口，与壳体非一体成型，如，通过焊接的方式与壳体相连接，非一体成型的好处是，元件或者端子或者端口的可替换性强，即若有损坏，更换新的替换件的可操作性强。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应所述以权利要求的保护范围为准。

Claims (8)

  1. 一种滤波装置，其特征在于，包括：
    壳体，具有内腔；
    谐振导体，内置于所述内腔；
    按压元件，一端置于壳体上，其他端悬空，正对应于所述谐振导体的开路端的位置，通过按压或者拉拔改变所述按压元件与所述谐振导体之间的距离来调节谐振频率。
  2. 根据权利要求1所述的滤波装置，其特征在于，所述滤波装置还包括：
    腔体端子，用于将所述谐振导体的短路端与所述壳体电连接，且用于支撑所述谐振导体。
  3. 根据权利要求1或2所述的滤波装置，其特征在于，所述壳体具有至少一个所述内腔，所述内腔置入至少一个所述谐振导体。
  4. 根据权利要求1至3任一权利要求所述的滤波装置，其特征在于，包括：
    所述谐振导体通过插拔的方式内置于腔体；所述谐振导体垂直的或者水平的内置于所述内腔。
  5. 根据权利要求1至4任一权利要求所述的滤波装置，其特征在于，所述谐振导体为金属带线或者微带线或者带状线或者印刷电路板PCB。
  6. 根据权利要求1至5任一所述的滤波装置，其特征在于，当所述壳体具有多个内腔时，
    所述多个内腔中的所述谐振导体之间采用金属插针或者金属探头或者印刷电路板实现电连接。
  7. 根据权利要求1所述的滤波装置，其特征在于，
    所述按压元件是金属片状结构或者金属钉状结构。
  8. 根据权利要求1至7任一权利要求所述的滤波装置，其特征在于，还包括：
    固定端子，置于所述壳体外侧，用于固定所述滤波装置；
    接线端口，置于所述壳体外侧，用于连接导线。
PCT/CN2016/109315 2016-12-09 2016-12-09 滤波装置 WO2018103102A1 (zh)

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