WO2018119824A1 - 一种滤波器及通信设备 - Google Patents

一种滤波器及通信设备 Download PDF

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Publication number
WO2018119824A1
WO2018119824A1 PCT/CN2016/112892 CN2016112892W WO2018119824A1 WO 2018119824 A1 WO2018119824 A1 WO 2018119824A1 CN 2016112892 W CN2016112892 W CN 2016112892W WO 2018119824 A1 WO2018119824 A1 WO 2018119824A1
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WO
WIPO (PCT)
Prior art keywords
filter
tuning screw
resonator
cavity
cover plate
Prior art date
Application number
PCT/CN2016/112892
Other languages
English (en)
French (fr)
Inventor
孙兴华
杨绍春
Original Assignee
深圳市大富科技股份有限公司
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 深圳市大富科技股份有限公司 filed Critical 深圳市大富科技股份有限公司
Priority to CN201680027480.8A priority Critical patent/CN107690728A/zh
Priority to PCT/CN2016/112892 priority patent/WO2018119824A1/zh
Publication of WO2018119824A1 publication Critical patent/WO2018119824A1/zh

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Classifications

    • 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
    • H01P1/207—Hollow waveguide filters
    • H01P1/209—Hollow waveguide filters comprising one or more branching arms or cavities wholly outside the main waveguide
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P5/00—Coupling devices of the waveguide type
    • H01P5/04—Coupling devices of the waveguide type with variable factor of coupling

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a filter and a communication device.
  • a filter is used to select a communication signal to filter out clutter or interference signals outside the frequency of the communication signal.
  • a cavity filter typically includes a filter cavity, a cover plate, a tuning screw, a resonator, and a media disk.
  • the prior art medium disk is located between the cover plate and the resonator, and both are closely matched. Due to assembly restrictions, there must be at least one active connection between the media disk and the resonator or cover. This active connection must be tightly fitted and in good contact. Therefore, the structure requires the cavity height, the height of the resonator, and the height of the medium disk to be very precise.
  • the prior art relies on adding an elastic mechanism on the cover to make a pressure contact connection. To achieve the purpose of close connection.
  • the structure of the cavity filter in the prior art is complicated, the spare parts require high manufacturing precision, the adjustable range of the screw is small, and the screw is only tuned into the resonator. And because the contact surfaces are all flat, under the action of elastic pressure and production tolerance, the contact surface will be unevenly formed to form partial contact, resulting in poor contact, which greatly affects the realization or uncontrollable radio frequency index. In addition, the medium disk is easily broken under pressure, and it is difficult to find that the filter function is invalid in actual work, the rework is difficult, and the defect rate is high.
  • the invention provides a filter and a communication device, which can change the capacitance in a large range to achieve the purpose of adjusting the filter parameters, thereby correspondingly reducing the manufacturing and assembly precision of the components, improving the yield of the filter product, and improving the filtering.
  • the possibility of greater power can also achieve the purpose of filter miniaturization.
  • a filter comprising: a filter cavity, a cover plate, a tuning screw, a resonator, and a media disk.
  • a cover plate is disposed on the filter cavity to form a resonant cavity
  • the resonator and the dielectric disk are disposed in the resonant cavity
  • the resonator is relatively fixed to the filter cavity.
  • a tuning screw is disposed on the cover plate, the medium disk is fixed to one of the tuning screw and the resonator, and is spaced apart from the other of the tuning screw and the resonator And adjusting, by the tuning screw, a separation distance between the medium disk and the other of the tuning screw and the resonator.
  • the cover plate is provided with a threaded through hole, and the tuning screw is disposed through the threaded through hole, and the spacing distance is adjusted by rotation.
  • the medium disk is fixed to an end surface of one of the tuning screw and the resonator, and along an axial direction of the tuning screw and the other of the tuning screw and the resonator End face spacing setting.
  • the medium disk, the tuning screw and the resonator are disposed coaxially with each other.
  • the medium disk is fixed on an end surface of the resonator facing the cover plate, and is disposed along an axial direction of the tuning screw from an end surface of the tuning screw facing a bottom of the filter cavity.
  • the tuning screw includes a rod body and an end plate, wherein the rod body is disposed on the cover plate, and the end plate is disposed on an end surface of the rod body facing the bottom of the filter cavity, and the The outer diameter of the end plate is larger than the outer diameter of the rod, and the medium disk is spaced apart from the end plate.
  • the end plate is coaxially disposed with the rod body.
  • the medium disk is fixed on an end surface of the tuning screw facing the bottom of the filter cavity, and is disposed along an axial direction of the tuning screw from an end surface of the resonator facing the cover plate.
  • the resonant cavity is filled with a dielectric material.
  • another technical solution adopted by the present invention is to provide a communication device including the above filter, which is used for selecting a signal transmission and reception of the communication device.
  • the communication device is one of a simplexer, a duplexer, a splitter, a combiner, and a tower top amplifier.
  • the invention has the beneficial effects of providing a filter and a communication device, wherein the medium disk is fixed on the end surface of one of the resonator and the tuning screw, and the original unadjustable fixed connection is changed to an adjustable floating connection.
  • the capacitance can be changed in a wide range to achieve the purpose of adjusting the filter parameters, thereby reducing the manufacturing and assembly precision of the components, improving the yield of the filter, and increasing the possibility of the filter being more powerful. Achieve the purpose of filter miniaturization design.
  • FIG. 1 is a schematic cross-sectional view of a filter according to a first embodiment of the present invention
  • FIG. 2 is a schematic cross-sectional view of a filter in accordance with a second embodiment of the present invention.
  • the medium disk is fixed to one of the tuning screw and the resonator, and is spaced apart from the other of the tuning screw and the resonator, and the medium disk is harmonized with the tuning screw by the tuning screw The separation distance between the other of the vibrators is adjusted. Also, in a preferred embodiment, the medium disk is fixed to the end face of one of the tuning screw and the resonator, and is disposed along the axial direction of the tuning screw from the end face of the other of the tuning screw and the resonator.
  • FIG. 1 is a schematic cross-sectional view of a filter according to a first embodiment of the present invention.
  • the filter 10 includes a filter cavity 12, a cover plate 14, a tuning screw 16, a resonator 18, and a media disk 11;
  • the cover 14 is capped on the filter cavity 12 to form a resonant cavity 13, and the resonant cavity 13 can be used to fill the dielectric material.
  • the resonator 18 and the dielectric disk 11 are disposed in the cavity 13, and the resonator 18 is fixed opposite to the filter cavity 12.
  • the tuning screw 16 is disposed on the cover plate 14.
  • the dielectric disk 11 is fixed on the resonator 18, and
  • the tuning screws 16 are spaced apart and the spacing distance between the tuning screw 16 and the resonator 18 is adjusted by the tuning screw 16.
  • the cover plate 14 is provided with a threaded through hole 15, and the tuning screw 16 is disposed through the threaded through hole 15 to adjust the separation distance by rotation.
  • the media disk 11 is fixed to the end face of the resonator 18 facing the cover plate 14 and is spaced apart from the end face of the tuning screw 16 facing the bottom of the filter cavity 12 along the axial direction of the tuning screw 16.
  • the medium disk 11, the tuning screw 16, and the resonator 18 are disposed coaxially with each other.
  • the fixing manner of the medium disk 11 and the resonator 18 includes, but is not limited to, welding, bonding, and screw fixing.
  • the tuning screw 16 includes a rod body 162 and an end plate 164.
  • the rod body 162 is disposed on the cover plate 14.
  • the end plate 164 is disposed on the end surface of the rod body 162 facing the bottom of the filter cavity 12, and the end plate 164 is outside.
  • the diameter is larger than the outer diameter of the rod body 162, and the medium disk 11 is spaced apart from the end plate 164.
  • the rod body 162 of the tuning screw 16 is integrated or separated from the end plate 164, and the distance between the medium disk 11 and the end plate 164 can be effectively adjusted to change the tuning screw 16 and the resonator 18 in a wide range.
  • the capacitance between the two is achieved for the purpose of adjusting the filter parameters.
  • the end plate 164 is disposed coaxially with the rod body 162.
  • the medium disk is fixed on the end surface of the resonator facing the cover plate, so that the original unadjustable fixed connection is changed to an adjustable floating connection, and the capacitance can be changed in a wide range to achieve the adjustment filter.
  • the purpose of the parameters can reduce the manufacturing and assembly accuracy of the components, improve the yield of the filter, and increase the possibility of higher power of the filter, and also achieve the purpose of miniaturization of the filter.
  • a second embodiment of the present invention is different from the first embodiment in that the medium disk in the first embodiment is fixed on the end surface of the tuning screw, and the medium disk in the second embodiment. It is fixed to the end face of the resonator.
  • the specific description is as follows:
  • FIG. 2 is a schematic cross-sectional view of a filter according to a second embodiment of the present invention.
  • the filter 20 includes a filter cavity 22, a cover plate 24, a tuning screw 26, a resonator 28, and a media disk 21;
  • the cover 24 is covered on the filter cavity 22 to form a resonant cavity 23, and the resonant cavity 23 is used to fill the dielectric material.
  • the resonator 28 and the dielectric disk 11 are disposed in the resonant cavity 23, and the resonator 28 is fixed opposite to the filter cavity 22.
  • the tuning screw 26 is disposed on the cover plate 24, and the dielectric disk 21 is fixed on the tuning screw 26, and is resonant.
  • the spacers 28 are spaced apart and the distance between the dielectric disk 21 and the resonator 28 is adjusted by the tuning screw 26.
  • the cover plate 24 is provided with a threaded through hole 25, and the tuning screw 26 is disposed through the threaded through hole 25, thereby adjusting the separation distance by rotation.
  • the medium tray 21 is fixed to the end surface of the tuning screw 26 facing the bottom of the filter chamber 22, and is disposed along the axial direction of the tuning screw 26 from the end surface of the resonator 28 facing the cover. Among them, the medium tray 21, the tuning screw 26, and the resonator 28 are disposed coaxially with each other.
  • the fixing manner of the medium tray 21 and the tuning screw 26 includes, but is not limited to, welding, bonding, and screw fixing.
  • the tuning screw 26 includes a rod body 262 and an end plate 264.
  • the rod body 262 is disposed on the cover plate 24, and the end plate 264 is disposed on the end surface of the rod body 262 facing the bottom of the filter cavity 22, and the end plate 264 is outside.
  • the diameter is larger than the outer diameter of the rod body 262, and the medium tray 21 and the end plate 264 are relatively fixed.
  • the rod body 262 of the tuning screw 26 is integrated or separated from the end plate 264, and the distance between the medium disk 21 and the resonator 28 can be effectively adjusted to change the tuning screw 26 and the resonator 28 in a wide range.
  • the capacitance between the two is achieved for the purpose of adjusting the filter parameters.
  • the end plate 264 is disposed coaxially with the rod body 262.
  • the medium disk is fixed on the end surface of the tuning screw facing the bottom of the filtering cavity, so that the original unadjustable fixed connection is changed to an adjustable floating connection, and the capacitance can be changed in a wide range to achieve
  • the purpose of adjusting the filter parameters can reduce the manufacturing and assembly precision of the components, improve the yield of the filter, and increase the possibility of higher power of the filter, and also achieve the purpose of miniaturization of the filter.
  • the filter provided by the above embodiments can be applied to a communication system, such as a communication device, which can be a simplex, a duplexer, a splitter, a combiner, and a tower amplifier.
  • a communication device which can be a simplex, a duplexer, a splitter, a combiner, and a tower amplifier.
  • the communication device can also be applied to a radar system, which is not specifically limited in the present invention.
  • the filter is used to select the signal transmission and reception of the communication device.
  • the present invention provides a filter and communication device capable of changing the capacitance in a wide range to achieve the purpose of adjusting the filter parameters, thereby correspondingly reducing the manufacture and assembly of components. Accuracy, improve the yield of the filter, and increase the possibility of higher power of the filter, can also achieve the purpose of filter miniaturization design.

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Abstract

本发明公开了一种滤波器及通信设备，该滤波器包括：滤波腔体、盖板、调谐螺杆、谐振器以及介质盘；其中，盖板封盖于滤波腔体上，进而形成一谐振腔，谐振器和介质盘设置于谐振腔内，且谐振器与滤波腔体相对固定，调谐螺杆穿设于盖板上，介质盘固定于调谐螺杆和谐振器中的一者上，且与调谐螺杆和谐振器中的另一者间隔设置，并通过调谐螺杆对介质盘与调谐螺杆和谐振器中的另一者之间的间隔距离进行调整。通过上述方式，本发明提供一种滤波器及通信设备，能够大范围改变电容量，以达到调节滤波器参数的目的，进而可相应减小零部件的制造及装配精度，提高滤波器成品良率，并提高滤波器更大功率的可能性，也能达成滤波器小型化设计的目的。

Description

一种滤波器及通信设备
【技术领域】
本发明涉及通信技术领域，特别是涉及一种滤波器及通信设备。
【背景技术】
移动滤波器作为一种频率选择装置被广泛应用于通信领域，尤其是射频通信领域。在基站中，滤波器用于选择通信信号，滤除通信信号频率外的杂波或干扰信号。
以腔体滤波器为例，腔体滤波器通常包含滤波腔体、盖板、调谐螺杆、谐振器以及介质盘。其中，现有技术介质盘位于盖板及谐振器之间，且均为紧密配合。因装配方式限制，介质盘与谐振器或盖板之间至少会存在一处活动连接，此活动连接须紧密配合，且接触良好。因此在结构上要求腔体内腔高度、谐振器高度以及介质盘高度等几方面制造尺寸非常精密，现有技术在上述基础上还要依靠在盖板上增加弹性机构，使之成压力接触连接，以达成紧密连接的目的。
由此可见，现有技术中腔体滤波器结构复杂，零配件要求制造精度高，螺杆可调节范围小，仅靠螺杆伸入谐振器内调谐。且因其接触面均是平面，在弹性压力及生产公差作用下势必会造成接触面不平形成局部接触，产生接触不良现象，极大影响射频指标的实现或不可控。此外，在压力作用下介质盘容易碎裂，实际工作中很难发现致滤波器功能失效，返工困难，不良率高。
【发明内容】
本发明提供一种滤波器及通信设备，能够大范围改变电容量，以达到调节滤波器参数的目的，进而可相应减小零部件的制造及装配精度，提高滤波器成品良率，并提高滤波器更大功率的可能性，也能达成滤波器小型化设计的目的。
本发明采用的一个技术方案是：提供一种滤波器，包括：滤波腔体、盖板、调谐螺杆、谐振器以及介质盘。盖板封盖于所述滤波腔体上，进而形成一谐振腔，所述谐振器和所述介质盘设置于所述谐振腔内，且所述谐振器与所述滤波腔体相对固定，所述调谐螺杆穿设于所述盖板上，所述介质盘固定于所述调谐螺杆和所述谐振器中的一者上，且与所述调谐螺杆和所述谐振器中的另一者间隔设置，并通过所述调谐螺杆对所述介质盘与所述调谐螺杆和所述谐振器中的另一者之间的间隔距离进行调整。
其中，所述盖板上设有螺纹通孔，所述调谐螺杆穿设于所述螺纹通孔，进而通过转动调节所述间隔距离。
其中，所述介质盘固定于所述调谐螺杆和所述谐振器中的一者的端面上，且沿所述调谐螺杆的轴向与所述调谐螺杆和所述谐振器中的另一者的端面间隔设置。
其中，所述介质盘、所述调谐螺杆以及所述谐振器彼此同轴设置。
其中，所述介质盘固定于所述谐振器的朝向所述盖板的端面上，且沿所述调谐螺杆的轴向与所述调谐螺杆的朝向所述滤波腔体的底部的端面间隔设置。
其中，所述调谐螺杆包括杆体及端板，其中所述杆体穿设于所述盖板上，所述端板设置于所述杆体的朝向所述滤波腔体的底部的端面上，且所述端板的外径大于所述杆体的外径，所述介质盘与所述端板间隔设置。
其中，所述端板与所述杆体同轴设置。
其中，所述介质盘固定于所述调谐螺杆的朝向所述滤波腔体的底部的端面上，且沿所述调谐螺杆的轴向与所述谐振器的朝向所述盖板的端面间隔设置。
其中，所述谐振腔中填充有介质材料。
为解决上述技术问题，本发明采用的另一个技术方案是：提供一种通信设备，包括上述滤波器，所述滤波器用于对所述通信设备的信号收发进行选择。
其中，所述通信设备为单工器、双工器、分路器、合路器以及塔顶放大器中的一种。
本发明的有益效果是：提供一种滤波器及通信设备，其中介质盘固定于谐振器和调谐螺杆一者的端面上，使其原有的不可调节的固定连接变更为距离可调节的浮动连接，可大范围改变电容量，以达到调节滤波器参数的目的，进而可相应减小零部件的制造及装配精度，提高滤波器成品良率，并提高滤波器更大功率的可能性，也能达成滤波器小型化设计的目的。
【附图说明】
图1是根据本发明第一实施方式的滤波器的截面示意图；
图2是根据本发明第二实施方式的滤波器的截面示意图。
【具体实施方式】
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，显然，所描述的实施例仅是本发明的一部分实施例，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。
在本发明中，通过将介质盘固定于调谐螺杆和所述谐振器中的一者上，且与调谐螺杆和谐振器中的另一者间隔设置，并通过调谐螺杆对介质盘与调谐螺杆和谐振器中的另一者之间的间隔距离进行调整。并且，在一优选实施例中，介质盘固定于调谐螺杆和谐振器中的一者的端面上，且沿调谐螺杆的轴向与调谐螺杆和谐振器中的另一者的端面间隔设置。通过上述方式，可相应减小零部件的制造及装配精度，提高滤波器成品良率，并提高滤波器更大功率的可能性，也能达成滤波器小型化设计的目的。下面将结合具体实施例进行详细描述如下：
请参阅图1，图1是根据本发明第一实施方式的滤波器的截面示意图，该滤波器10包括：滤波腔体12、盖板14、调谐螺杆16、谐振器18以及介质盘11；
其中，盖板14封盖于滤波腔体12上，进而形成一谐振腔13，且谐振腔13可用于填充介质材料。谐振器18和介质盘11设置于谐振腔13内，且谐振器18与滤波腔体12相对固定，调谐螺杆16穿设于盖板14上，介质盘11固定于谐振器中18上，且与调谐螺杆16间隔设置，并通过调谐螺杆16对调谐螺杆16和谐振器18之间的间隔距离进行调整。
具体的，盖板14上设有螺纹通孔15，调谐螺杆16穿设于螺纹通孔15，进而通过转动调节间隔距离。
在具体实施方式中，介质盘11固定于谐振器18的朝向盖板14的端面上，且沿调谐螺杆16的轴向与调谐螺杆16的朝向滤波腔体12的底部的端面间隔设置。其中，介质盘11、调谐螺杆16以及谐振器18彼此同轴设置。其中，介质盘11与谐振器的18的固定方式包括但不限于焊接、粘接、螺钉固定。
进一步的，调谐螺杆16包括杆体162及端板164，其中杆体162穿设于盖板14上，端板164设置于杆体162的朝向滤波腔体12的底部的端面上，且端板164的外径大于杆体162的外径，介质盘11与端板164间隔设置。在具体实施方式中，调谐螺杆16的杆体162与端板164成一体或分体形式，可有效调节介质盘11与端板164之间的距离，以大范围改变调谐螺杆16与谐振器18之间的电容量，达到调节滤波器参数的目的。此外，端板164与杆体162同轴设置。
上述实施方式中，介质盘固定于谐振器的朝向盖板的端面上，使其原有的不可调节的固定连接变更为距离可调节的浮动连接，可大范围改变电容量，以达到调节滤波器参数的目的，进而可相应减小零部件的制造及装配精度，提高滤波器成品良率，并提高滤波器更大功率的可能性，也能达成滤波器小型化设计的目的。
参阅图2，为本发明第二实施方式，该实施方式与第一实施方式不同之处在于，第一实施例方式中的介质盘固定于调谐螺杆端面上，第二实施例方式中的介质盘固定于谐振器的端面上。具体描述如下:
请参阅图2，图2是根据本发明第二实施方式的滤波器的截面示意图，该滤波器20包括：滤波腔体22、盖板24、调谐螺杆26、谐振器28以及介质盘21；
其中，盖板24封盖于滤波腔体22上，进而形成一谐振腔23，且谐振腔23用于填充介质材料。谐振器28和介质盘11设置于谐振腔23内，且谐振器28与滤波腔体22相对固定，调谐螺杆26穿设于盖板24上，介质盘21固定于调谐螺杆26上，且与谐振器28间隔设置，并通过调谐螺杆26对介质盘21与谐振器28之间的间隔距离进行调整。
具体的，盖板24上设有螺纹通孔25，调谐螺杆26穿设于螺纹通孔25，进而通过转动调节间隔距离。
进一步地，介质盘21固定于调谐螺杆26的朝向滤波腔体22的底部的端面上，且沿调谐螺杆26的轴向与谐振器28的朝向所述盖板的端面间隔设置。其中，介质盘21、调谐螺杆26以及谐振器28彼此同轴设置。其中，介质盘21与调谐螺杆26的固定方式包括但不限于焊接、粘接、螺钉固定。
进一步的，调谐螺杆26包括杆体262及端板264，其中杆体262穿设于盖板24上，端板264设置于杆体262的朝向滤波腔体22的底部的端面上，且端板264的外径大于杆体262的外径，介质盘21与端板264相对固定。在具体实施方式中，调谐螺杆26的杆体262与端板264成一体或分体形式，可有效调节介质盘21与谐振器28之间的距离，以大范围改变调谐螺杆26与谐振器28之间的电容量，达到调节滤波器参数的目的。此外，端板264与杆体262同轴设置。
上述实施方式中，介质盘固定于调谐螺杆的朝向滤波腔体的底部的端面上，使其原有的不可调节的固定连接变更为距离可调节的浮动连接，可大范围改变电容量，以达到调节滤波器参数的目的，进而可相应减小零部件的制造及装配精度，提高滤波器成品良率，并提高滤波器更大功率的可能性，也能达成滤波器小型化设计的目的。
可以理解的是，以上实施方式提供的滤波器，可以应用于通信系统，如一种通信设备，所述通信设备可以为单工器、双工器、分路器、合路器以及塔顶放大器中的一种。具体地，该通信设备也可以应用于雷达系统，本发明不作具体限定。且滤波器用于对通信设备的信号收发进行选择。
综上所述，本领域技术人员容易理解，本发明提供一种滤波器及通信设备，能够大范围改变电容量，以达到调节滤波器参数的目的，进而可相应减小零部件的制造及装配精度，提高滤波器成品良率，并提高滤波器更大功率的可能性，也能达成滤波器小型化设计的目的。
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。

Claims (11)

  1. 一种滤波器，其特征在于，所述滤波器包括：滤波腔体、盖板、调谐螺杆、谐振器以及介质盘；
    其中，所述盖板封盖于所述滤波腔体上，进而形成一谐振腔，所述谐振器和所述介质盘设置于所述谐振腔内，且所述谐振器与所述滤波腔体相对固定，所述调谐螺杆穿设于所述盖板上，所述介质盘固定于所述调谐螺杆和所述谐振器中的一者上，且与所述调谐螺杆和所述谐振器中的另一者间隔设置，并通过所述调谐螺杆对所述介质盘与所述调谐螺杆和所述谐振器中的另一者之间的间隔距离进行调整。
  2. 根据权利要求1所述的滤波器，其特征在于，所述盖板上设有螺纹通孔，所述调谐螺杆穿设于所述螺纹通孔，进而通过转动调节所述间隔距离。
  3. 根据权利要求1所述的滤波器，其特征在于，所述介质盘固定于所述调谐螺杆和所述谐振器中的一者的端面上，且沿所述调谐螺杆的轴向与所述调谐螺杆和所述谐振器中的另一者的端面间隔设置。
  4. 根据权利要求3所述的滤波器，其特征在于，所述介质盘、所述调谐螺杆以及所述谐振器彼此同轴设置。
  5. 根据权利要求3所述的滤波器，其特征在于，所述介质盘固定于所述谐振器的朝向所述盖板的端面上，且沿所述调谐螺杆的轴向与所述调谐螺杆的朝向所述滤波腔体的底部的端面间隔设置。
  6. 根据权利要求5所述的滤波器，其特征在于，所述调谐螺杆包括杆体及端板，其中所述杆体穿设于所述盖板上，所述端板设置于所述杆体的朝向所述滤波腔体的底部的端面上，且所述端板的外径大于所述杆体的外径，所述介质盘与所述端板间隔设置。
  7. 根据权利要求6所述的滤波器，其特征在于，所述端板与所述杆体同轴设置。
  8. 根据权利要求3所述的滤波器，其特征在于，所述介质盘固定于所述调谐螺杆的朝向所述滤波腔体的底部的端面上，且沿所述调谐螺杆的轴向与所述谐振器的朝向所述盖板的端面间隔设置。
  9. 根据权利要求1所述的滤波器，其特征在于，所述谐振腔中填充有介质材料。
  10. 一种通信设备，其特征在于，包括权利要求1至9任意一项所述滤波器，所述滤波器用于对所述通信设备的信号收发进行选择。
  11. 根据权利要求10所述的通信设备，其特征在于，所述通信设备为单工器、双工器、分路器、合路器以及塔顶放大器中的一种。
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