WO2018129719A1 - 腔体谐振器、滤波器及通信设备 - Google Patents

腔体谐振器、滤波器及通信设备 Download PDF

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Publication number
WO2018129719A1
WO2018129719A1 PCT/CN2017/071174 CN2017071174W WO2018129719A1 WO 2018129719 A1 WO2018129719 A1 WO 2018129719A1 CN 2017071174 W CN2017071174 W CN 2017071174W WO 2018129719 A1 WO2018129719 A1 WO 2018129719A1
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WIPO (PCT)
Prior art keywords
cavity
cover plate
resonant column
resonant
column
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2017/071174
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English (en)
French (fr)
Inventor
吴大淼
崔铮
张欢庆
朱运涛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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 Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to EP17891734.0A priority Critical patent/EP3561948B1/en
Priority to CN201780035539.2A priority patent/CN109314293B/zh
Priority to PCT/CN2017/071174 priority patent/WO2018129719A1/zh
Priority to BR112019014267-3A priority patent/BR112019014267B1/pt
Publication of WO2018129719A1 publication Critical patent/WO2018129719A1/zh
Priority to US16/510,414 priority patent/US10978775B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P7/00—Resonators of the waveguide type
    • H01P7/06—Cavity resonators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P7/00—Resonators of the waveguide type
    • H01P7/04—Coaxial resonators
    • 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

Definitions

  • the present application relates to the field of wireless communications, and in particular, to a cavity resonator, a filter, and a communication device.
  • the cavity filter is a type of filter commonly used in wireless communication devices.
  • the existing cavity filter may include at least one cavity resonator, and each cavity resonator may be as shown in FIG.
  • the device may include a cavity 1, a resonant column 2, a screw 3, a nut 4, a cover plate 5, a spacer 6, and a tuning screw 7.
  • the inner bottom surface of the cavity 1 is provided with a boss
  • the boss is provided with a threaded hole
  • the resonant column 2 can be mounted on the boss by a screw 3
  • the cover plate 5 is provided with a threaded hole
  • the tuning screw 7 can be fixed to the cover 5 by the nut 4 and the backing plate 6.
  • the tuning screw 7 is rotated in a threaded hole in the cover plate 5 to adjust the distance between the bottom of the tuning screw 7 and the top of the resonant column 2, thereby functioning to adjust the resonant frequency.
  • the threads of the tuning screw that are not in contact with the cover plate are usually directly exposed to a strong electric field and generate a plurality of different resonant frequencies under the action of a strong electric field.
  • the signal, the signals of the plurality of different resonant frequencies may be modulated with each other to generate an intermodulation interference signal, that is, the cavity resonator may be sensitive to intermodulation.
  • the intermodulation interference signal will affect the filtering capability of the cavity resonator, resulting in a decrease in the filtering capability of the cavity resonator, that is, a decrease in the through rate of the cavity resonator.
  • the tuning screw and the cover plate are connected by screwing, and may be loosened after a long time of use, which also causes the problem of mutual adjustment sensitivity in the cavity resonator.
  • the embodiment of the present application provides a cavity resonator, a filter and a communication device.
  • a cavity resonator comprising a cover plate, a resonant column and a cavity; the cover plate is mounted at an opening at a top of the cavity, the resonant column being disposed at a bottom of the cavity, and a top of the resonant column faces the cover plate; wherein a material of at least one of the cover plate, the resonant column, and the cavity is a plastic metal material to pass the The deformation of the plastic metal material is subjected to resonance frequency adjustment.
  • the cover plate Since the cover plate is mounted on the opening at the top of the cavity, the resonant column is disposed at the bottom of the cavity, and the distance between the cover plate and the resonant column changes the size of the distributed capacitance, and the distance between the cavity and the resonant column changes the distribution.
  • the size of the inductor therefore, when at least one of the cover or the resonant rod is deformed, causing a change in the distance between the cover and the resonant rod, the size of the distributed capacitance will be changed, at least in the resonant column or cavity
  • the size of the distributed inductance will be changed, thereby achieving the purpose of adjusting the resonant frequency, thereby avoiding the contact failure between the tuning screw and the cover plate.
  • Intermodulation sensitive issues have improved the pass-through rate.
  • the structure of the cavity resonator is simplified, the space occupied by the height of the tuning screw is avoided, thereby reducing the overall height of the cavity resonator and reducing the space occupation of the cavity resonator.
  • the cover plate, the resonance column or the cavity can be deformed by the action of external force striking, pressing, pulling, etc., and the cover plate, the resonance column and the cavity are not deformed. Counter The bomb resumed.
  • an opening is disposed at the top of the cavity, the resonant column is mounted on an inner bottom surface of the cavity, and at least one of the cover plate and the cavity is made of a plastic metal material.
  • the resonant column can be directly mounted on the inner bottom surface of the cavity by screws, welding or the like.
  • a boss may be disposed in the cavity, and the boss is provided with a threaded hole, and the resonant column may be mounted on the boss by a screw.
  • an opening is disposed at the top and the bottom of the cavity, an opening is disposed at a bottom of the resonant column, and an opening of the bottom of the resonant column is connected to a bottom opening of the cavity to form the cavity.
  • the bottom surface is disposed at the top and the bottom of the cavity.
  • the opening at the bottom of the resonant column is connected to the bottom opening of the cavity by extension.
  • the materials of the resonant column, the cover plate and the cavity are all plastic metal materials, only the resonant column may be deformed for resonance frequency adjustment, or only the cover plate may be deformed for resonance frequency adjustment, or Only the cavity is deformed for resonance frequency adjustment, or any two of the resonant column, the cover plate and the cavity are simultaneously deformed for resonance frequency adjustment, and the resonance column, the cover plate and the cavity are simultaneously Deformation occurs to make resonance frequency adjustment.
  • the material of the cover plate is a plastic metal material, and the cover plate is provided with a groove.
  • the cover plate Since the thickness of the position where the groove is located in the cover plate becomes thinner when the cover plate is provided with a groove, the cover plate is more susceptible to deformation.
  • the cover plate is provided with a protrusion.
  • the cover Since the cover is provided with a protrusion, it is convenient to deform the cover by pulling the protrusion to be away from the resonant column. When the cover is deformed downward, in order to restore the deformed cover to the position before the deformation, it can also be achieved by pulling the projection upward.
  • the protrusion may be disposed on the groove of the cover.
  • the material of the cover plate is a plastic metal material, and the cover plate is provided with a pull ring.
  • the cover plate can be deformed by the operation of pulling the pull ring away from the resonant column to increase the distance between the cover plate and the resonant column. After the cover plate is deformed downward, in order to restore the deformed cover plate to the position before the deformation, it can also be achieved by pulling the pull ring upward.
  • the resonant column is integrally or separately connected to the cavity.
  • the resonant column and the cavity may be connected by welding, screwing or the like.
  • the resonant column is a barrel-shaped resonant column, and the vertical cross-sectional shape of the resonant column is H-shaped, U-shaped or stepped.
  • the vertical cross section of the resonant column is a cross section perpendicular to the horizontal plane, and the vertical cross-sectional shape may be H-shaped, U-shaped or stepped.
  • the vertical section of the resonant column can also be other shapes, such as n-type and the like. Among them, the n-type can also be referred to as a U-shaped opening.
  • an embodiment of the present application provides a filter including the cavity resonator as provided in the first aspect above.
  • an embodiment of the present application provides a communications device, where the communications device includes the foregoing second aspect. Filter.
  • the resonant column Since the cover is mounted on the opening at the top of the cavity, the resonant column is mounted at the bottom of the cavity, and usually the distance between the cover and the resonant column changes the size of the distributed capacitance, the distance between the cavity and the resonant column.
  • FIG. 1 is a schematic structural view of a cavity resonator provided in the prior art.
  • FIG. 2 is a schematic structural view of a first cavity resonator provided by an embodiment of the present application.
  • FIG. 3 is a schematic structural diagram of a second cavity resonator provided by an embodiment of the present application.
  • FIG. 4 is a schematic structural view of a third cavity resonator provided by an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a fourth cavity resonator provided by an embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of a fifth cavity resonator provided by an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of a sixth cavity resonator provided by an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a seventh cavity resonator provided by an embodiment of the present application.
  • Embodiments of the present application 8: cover plate, 9: resonant column, 10: cavity.
  • the cavity resonator includes a cover plate 8, a resonant column 9 and a cavity 10;
  • the cover plate 8 is mounted at the opening at the top of the cavity 10, the resonant column 9 is disposed at the bottom of the cavity 10, and the top of the resonant column 9 faces the cover plate 8; wherein at least the cover plate 8, the resonant column 9 and the cavity 10 are at least One material is a plastic metal material to adjust the resonance frequency by the deformation of the plastic metal material.
  • the resonant column 9 Since the cover 8 is mounted at the top of the cavity 10, the resonant column 9 is disposed at the bottom of the cavity 10, and the distance between the cover 8 and the resonant column 9 changes the size of the distributed capacitance, the cavity 10 and the resonant column The distance between 9 changes the size of the distributed inductance, so when at least one of the cover 8 or the resonant rod 9 is deformed, causing a change in the distance between the cover 8 and the resonant rod 9, the distribution will change.
  • the size of the capacitor when at least one of the resonant column 9 or the cavity 10 is deformed, causing a change in the distance between the resonant column 9 or the cavity 10, will change the magnitude of the distributed inductance, thereby achieving the adjustment of the resonant frequency.
  • Purpose avoiding the sensitivity of intermodulation caused by poor contact between the tuning screw and the cover plate Problem, improved the straight-through rate.
  • the structure of the cavity resonator is simplified, the space occupied by the height of the tuning screw is avoided, thereby reducing the overall height of the cavity resonator and reducing the space occupation of the cavity resonator.
  • the cross-sectional view of the cavity resonator is taken as an example, and the embodiment of the present application is not limited.
  • the plastic metal material may be a plastic metal material such as aluminum or copper, or may be another plastic metal material.
  • the resonant column 9 and the cavity 10 may be integrally formed or may be connected separately. Wherein, when the resonant column 9 is connected to the cavity 10 separately, the resonant column 9 and the cavity 10 may be connected by welding, screws or the like.
  • the resonant column 9 is a barrel-shaped resonant column
  • the vertical cross-section of the resonant column is a cross-section perpendicular to a horizontal plane
  • the vertical cross-sectional shape may be H-shaped, U-shaped or stepped.
  • the shape of the vertical section of the resonant column may also be other shapes, such as n-type and the like. Among them, the n-type can also be referred to as a U-shaped opening.
  • the embodiment of the present application may include at least the following four implementation manners according to the shape of the resonant column 9.
  • the vertical cross-sectional shape of the resonant column 9 may be H-shaped, the cavity 10 is provided with an opening at the top, the resonant column 9 may be mounted on the inner bottom surface of the cavity, and the cover 8 may be installed.
  • the material of at least one of the cover plate 8 and the cavity 10 is a plastic metal material.
  • the resonant column 9 and the cavity 10 can be integrally formed, they can also be connected separately. Therefore, when the resonant column 9 is connected to the cavity, the resonant column 9 can be directly mounted in the cavity by screws, welding, or the like. On the inner bottom surface of the body.
  • a boss can be disposed in the cavity 10, and the boss is provided with a threaded hole, and the resonator column 9 can be mounted on the boss by screws.
  • the cavity 10 may be a cylindrical cavity with an opening at the top, a rectangular cavity with an opening at the top, or an irregularity at the top of the opening. Shaped cavity.
  • the material of the cover 8 may be a plastic metal material
  • the material of the cavity 10 may be a plastic metal material
  • the material of the cover 8 and the cavity 10 may be plastic metal. material.
  • the cover plate 8 When the material of the cover plate 8 is a plastic metal material, the cover plate 8 can be deformed by an external force striking, pressing, etc., and the deformation of the cover plate 8 can change the distance between the cover plate 8 and the resonant column 9, so that the cavity can be changed.
  • the size of the capacitance distributed in the bulk resonator to adjust the resonant frequency is a plastic metal material.
  • the cover plate 8 when the material of the cover plate 8 is a plastic metal material, referring to FIG. 3, the cover plate 8 may be provided with a groove. Since the thickness of the position where the groove is located in the cover plate 8 is thinned when the cover plate 8 is provided with a groove, the cover plate 8 is more susceptible to deformation.
  • the cover 8 may be provided with a projection 11, and when the cover 8 is provided with a recess, the projection 11 may be disposed on the recess of the cover 8.
  • the direction near the bottom of the cavity is referred to as the lower side
  • the direction away from the bottom of the cavity is referred to as the upper side.
  • the cover plate 8 can be deformed by the operation of pulling the projection 11 upward, thereby being away from the resonance column 9 to increase the distance between the cover plate 8 and the resonance column 9. After the cover plate 8 is deformed downward, in order to restore the downwardly deformed cover plate 8 to the position before the deformation, it can also be achieved by pulling the projection 11 upward.
  • the protrusion 11 can be arranged on the cover 8 but also the upward direction of the protrusion 8 can be achieved by the upward traction of the protrusion 11 , and the pull ring can be arranged on the cover 8 and passed through. Pulling the pull ring upwards achieves the purpose of the cover plate 8 being away from the resonant column 9.
  • the material of the cavity 10 can also be a plastic metal material, and the cavity 10 can be deformed under the action of external force striking, pressing, etc., and the deformation of the cavity 10 can change between the cavity 10 and the resonant column 9. Distance so that you can The magnitude of the inductance distributed in the cavity resonator is varied to adjust the resonant frequency.
  • any one of the cover 8 and the cavity 10 can be deformed for resonance frequency adjustment, of course, the cover 8 and the cavity 10 It is also possible to simultaneously deform to perform resonance frequency adjustment.
  • the cover plate 8 or the cavity 10 can be deformed by an external force, and the cover plate 8 and the cavity 10 are not deformed after being deformed. .
  • the vertical cross-sectional shape of the resonant column 9 may be U-shaped, and the bottom of the resonant column is connected to the inner bottom surface of the cavity 10 to be mounted on the inner bottom surface of the cavity 10.
  • the cover plate 8 is mounted at the opening at the top of the cavity 10, and the material of at least one of the cover plate 8 and the cavity 10 is a plastic metal material.
  • the cavity 10 may be a cylindrical cavity with an opening at the top, a rectangular cavity with an opening at the top, or an irregularity at the top of the opening. Shaped cavity.
  • the material of the cover plate 8 may be a plastic metal material
  • the material of the cavity 10 may be a plastic metal material
  • the material of the cover plate 8 and the cavity 10 may be plastic metal. material.
  • the cover plate 8 when the material of the cover plate 8 is a plastic metal material, referring to FIG. 5, the cover plate 8 may be provided with a groove to facilitate deformation.
  • the recess may also be provided with a protrusion 11 for facilitating the upward pulling of the cover 8 and the like, so as to achieve the purpose of the cover 8 away from the resonant column 9.
  • the cavity 10 when the material of the cavity 10 is a plastic metal material, the cavity 10 can be deformed by an external force, and the deformation of the cavity 10 can change the distance between the cavity 10 and the resonant column 9, thereby changing the cavity resonance.
  • the size of the inductance distributed in the device to adjust the resonant frequency when the material of the cavity 10 is a plastic metal material, the cavity 10 can be deformed by an external force, and the deformation of the cavity 10 can change the distance between the cavity 10 and the resonant column 9, thereby changing the cavity resonance.
  • the size of the inductance distributed in the device to adjust the resonant frequency.
  • any one of the cover 8 and the cavity 10 can be deformed for resonance frequency adjustment, of course, the cover 8 and The cavity 10 can also be deformed simultaneously for resonance frequency adjustment.
  • the vertical cross-sectional shape of the resonant column 9 may be a stepped type, and the top and bottom of the cavity 10 are provided with openings, and the bottom of the resonant column 9 is provided with an opening, and the resonant column 9 The opening at the bottom is connected to the bottom opening of the cavity 10 by extension to form the bottom surface of the cavity.
  • the cavity 10 may be a cylindrical cavity with an opening at the top and the bottom, or a rectangular cavity with an opening at the top and the bottom, or a top and a bottom.
  • An open, irregularly shaped cavity is provided.
  • the material of the resonant column 9 may be a plastic metal material, and when the material of the resonant column 9 is a plastic metal material, the resonant column 9 may be struck, pressed, etc. by an external force. Deformation occurs under operation. When the resonance column 9 is deformed close to the cover plate 8, that is, the resonance column 9 is deformed in the axial direction, and the distance between the resonance column 9 and the cover plate 8 is reduced, so that the distribution in the cavity resonator can be changed.
  • the size of the capacitance is adjusted for the resonance frequency; when the resonance column 9 is deformed close to the cavity 10, that is, the resonance column 9 is deformed in the lateral direction, increasing the distance between the resonance column 9 and the cavity 10.
  • the magnitude of the inductance distributed in the cavity resonator can be changed to adjust the resonance frequency.
  • the material of the cover plate 8 may be a plastic metal material, or the material of the cavity 10 may be a plastic metal material.
  • the material of the cover plate 8, the resonant column 9 and any two of the cavities 10 may be a plastic metal material, or The material of the cover plate 8, the resonant column 9 and the cavity 10 may each be a plastic metal material.
  • the cover 8 when the material of the cover 8 is a plastic metal material, the cover 8 can be deformed to perform resonance frequency adjustment.
  • the cover plate 8 can also be provided with a groove so that the cover plate is easily deformed.
  • the groove may be provided with a protrusion 11 to facilitate the upward pulling of the cover plate 8 and the like, so as to achieve the purpose of the cover plate 8 away from the resonant column 9.
  • the cavity 10 when the material of the cavity 10 is a plastic metal material, the cavity 10 is deformed by an external force, and the deformation of the cavity 10 can be a distance between the cavity 10 and the resonant column 9, thereby changing the cavity resonance.
  • the size of the inductance distributed in the device to adjust the resonant frequency when the material of the cavity 10 is a plastic metal material, the cavity 10 is deformed by an external force, and the deformation of the cavity 10 can be a distance between the cavity 10 and the resonant column 9, thereby changing the cavity resonance.
  • the size of the inductance distributed in the device to adjust the resonant frequency.
  • the materials of the resonant column 9, the cover 8 and the cavity 10 are all plastic metal materials, only the resonant column 9 may be deformed to perform resonance frequency adjustment, and Only the cover 8 is deformed for resonance frequency adjustment, or only the cavity 10 is deformed for resonance frequency adjustment, or alternatively, any two of the resonant column 9, the cover 8 and the cavity 10 may be simultaneously Deformation occurs to perform resonance frequency adjustment, and it is also possible that the resonant column 9, the cover 8 and the cavity 10 are simultaneously deformed for resonance frequency adjustment.
  • the vertical cross-sectional shape of the resonant column 9 may be an n-type, the bottom of the resonant column 9 is provided with an opening, and the opening at the bottom of the resonant column 9 is extended with the cavity 10 The bottom opening is connected to form the bottom surface of the cavity.
  • the cavity 10 may be a cylindrical cavity with an opening at the top and the bottom, or a rectangular cavity with an opening at the top and the bottom, or a top and a bottom.
  • An open, irregularly shaped cavity is provided.
  • the material of the resonant column 9 may be a plastic metal material.
  • the material of the cover plate 8 may be a plastic metal material
  • the material of the resonant column 9 may be a plastic metal material
  • the material of the cavity 10 may also be a plastic metal material.
  • the cover plate 8, the resonant column 9 and the cavity The material of any two of the 10 may be a plastic metal material, or the material of the cover 8, the resonance column 9 and the cavity 10 may be a plastic metal material.
  • the cover plate 8 When the material of the cover plate 8 is a plastic metal material, the cover plate 8 can be deformed, and the cover plate 8 can be provided with a groove to facilitate deformation of the cover plate 8.
  • the groove may be provided with a protrusion 11 to facilitate the upward pulling of the cover plate 8 and the like, so as to achieve the purpose of the cover plate 8 away from the resonant column 9.
  • the operation of adjusting the resonant frequency by the cavity resonator is the same as the operation of adjusting the resonant frequency by the cavity resonator when the vertical cross-sectional shape of the resonant column along the resonant column is stepped
  • This embodiment of the present application does not describe this one by one.
  • the different cover plates 8 and the shape of the resonant column 9 may also be combined into other combinations.
  • the resonant rod in FIG. 7 or FIG. 8 may also be combined with the cover plate in FIGS. 2 to 4. It can also be used in combination with other forms of cover plates in the prior art.
  • the cover plates in FIGS. 2 to 8 can also be used in combination with other forms of resonant columns in the prior art. limited.
  • the cover plate since the cover plate is installed at the opening of the top of the cavity, the resonant column is installed at the bottom of the cavity, and the distance between the cover plate and the resonant column changes the size of the distributed capacitance, the cavity and the resonant column. The distance between them changes the size of the distributed inductance. Therefore, when at least one of the cover or the resonant rod is deformed, causing a change in the distance between the cover and the resonant rod, the size of the distributed capacitance will be changed.
  • the size of the distributed inductance is changed, thereby achieving the purpose of adjusting the resonant frequency, and avoiding the tuning screw and the cover.
  • the problem of intermodulation sensitivity caused by poor contact between the boards improves the straight-through rate.
  • the structure of the cavity resonator is simplified, the space occupied by the height of the tuning screw is avoided, thereby reducing the overall height of the cavity resonator and reducing the space occupation of the cavity resonator.
  • Embodiments of the present application provide a filter including the cavity resonator in the above embodiment.
  • the filter may also include other types of resonators that are cascaded with the cavity resonators described above.
  • other components may be included in the filter.
  • the filter may further include a capacitor, a resistor, an inductor, and the like.
  • the cavity resonator can avoid mutual sensitivity and improve the through rate, when the cavity resonator is included in the filter, the efficiency of filtering by the filter can be improved.
  • the embodiment of the present application provides a communication device, which includes the filter in the above embodiment.
  • the communication device may be a duplexer, a wireless transceiver device, a base station, or the like.
  • the filtering is performed by the filter, the problem of mutual adjustment sensitivity can be avoided, and the through rate is improved. Therefore, when the filter is included in the communication device, the interference signal to the communication signal can be avoided. Interference improves the transmission quality and efficiency of communication signals.

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Abstract

本申请实施例提供了一种腔体谐振器、滤波器及通信设备，涉及无线通信领域，该腔体谐振器包括盖板、谐振柱和腔体；盖板安装在腔体顶部的开口，谐振柱设置在腔体的底部，由于盖板与谐振柱之间的距离会改变分布的电容的大小，腔体与谐振柱之间的距离会改变分布电感的大小，且盖板、谐振柱和腔体中至少一个的材料为塑性金属材料。因此，当盖板、谐振柱或腔体中至少一个发生形变时，会改变分布的电容或分布的电感的大小，从而达到调节谐振频率的目的。另外，由于塑性金属材料具有形变后不反弹的特性，当盖板、谐振柱或腔体中至少一个发生形变时，不会主动进行反弹恢复，避免了因接触不良导致的互调敏感问题，提高了直通率。

Description

腔体谐振器、滤波器及通信设备 技术领域
本申请涉及无线通信领域，特别涉及一种腔体谐振器、滤波器及通信设备。
背景技术
腔体滤波器是无线通信设备中常用的一种滤波器类型，现有的腔体滤波器可以包括至少一个腔体谐振器，每个腔体谐振器可以如图1所示，该腔体谐振器可以包括腔体1、谐振柱2、螺钉3、螺母4、盖板5、垫片6和调谐螺杆7。其中，该腔体1的内底面上设置有凸台，该凸台上设置有螺纹孔，谐振柱2可以通过螺钉3安装在凸台上，该盖板5上设置有螺纹孔，该调谐螺杆7可以通过螺母4和垫板6固定在盖板5上。该调谐螺杆7通过在盖板5上的螺纹孔内进行旋转，以调节调谐螺杆7的底部与谐振柱2的顶部之间的距离，从而起到调节谐振频率的作用。
由于腔体谐振器通常是工作在强电场环境中，因此，该调谐螺杆上未与盖板接触部分的螺纹通常直接暴露在强电场中，并在强电场的作用下产生多个不同谐振频率的信号，该多个不同谐振频率的信号可能会相互进行调制，产生互调干扰信号，也即，腔体谐振器会发生互调敏感的问题。该互调干扰信号将会影响腔体谐振器的滤波能力，导致腔体谐振器滤波能力下降，也即是导致腔体谐振器的直通率降低。同时，该调谐螺杆和盖板之间是通过螺纹连接，长时间使用后可能会有所松动，同样也会导致腔体谐振器中发生互调敏感的问题。
发明内容
为了降低腔体谐振器中互调敏感问题的发生，提高腔体谐振器的直通率，本申请实施例提供了一种腔体谐振器、滤波器及通信设备。
第一方面，提供了一种腔体谐振器，所述腔体谐振器包括盖板、谐振柱和腔体；所述盖板安装在所述腔体顶部的开口处，所述谐振柱设置在所述腔体的底部，且所述谐振柱的顶部朝向所述盖板；其中，所述盖板、所述谐振柱和所述腔体中至少一个的材料为塑性金属材料，以通过所述塑性金属材料的形变进行谐振频率调节。
由于盖板安装在腔体顶部的开口，谐振柱设置在腔体的底部，且盖板与谐振柱之间的距离会改变分布的电容的大小，腔体与谐振柱之间的距离会改变分布电感的大小，因此，当盖板或谐振杆中的至少一个发生形变，导致盖板与谐振杆之间的距离产生变化时，将会改变分布的电容的大小，当谐振柱或腔体中至少一个发生形变，导致谐振柱或腔体之间的距离发生变化时，将会改变分布的电感的大小，从而达到调节谐振频率的目的，避免了因调谐螺杆与盖板之间的接触不良导致的互调敏感问题，提高了直通率。同时，由于简化了腔体谐振器的结构，避免了调谐螺钉的高度所占用的空间，从而降低了腔体谐振器的整体高度，减少了腔体谐振器对空间的占用。
由于塑性金属材料具有形变后不反弹的特性，因此，盖板、谐振柱或腔体可以通过外力的打击、按压、牵引等操作发生形变，且盖板、谐振柱以及腔体发生形变后不会进行反 弹恢复。
可选地，所述腔体顶部设置开口，所述谐振柱安装在所述腔体的内底面上，所述盖板和所述腔体中至少一个的材料为塑性金属材料。
其中，谐振柱可以直接通过螺钉、焊接等方式安装在该腔体的内底面上。或者，该腔体中可以设置凸台，该凸台上设置有螺纹孔，谐振柱可以通过螺钉安装在凸台上。
可选地，所述腔体顶部与底部均设置开口，所述谐振柱的底部设置有开口，且所述谐振柱底部的开口通过延伸与所述腔体的底部开口连接，构成所述腔体的底面。
其中，当该谐振柱的垂直剖面形状为台阶型或者n型时，谐振柱底部的开口通过延伸与所述腔体的底部开口连接。
另外，当该谐振柱、盖板和腔体的材料均为塑性金属材料时，可以只是谐振柱发生形变，以进行谐振频率调节，也可以只是盖板发生形变，以进行谐振频率调节，或者，只是腔体发生形变，以进行谐振频率调节，又或者是谐振柱、盖板和腔体中的任意两个同时发生形变，以进行谐振频率调节，还可以是谐振柱、盖板和腔体同时发生形变，以进行谐振频率调节。
可选地，所述盖板的材料为塑性金属材料，且所述盖板上设置有凹槽。
由于当该盖板设置有凹槽时，盖板中凹槽所处位置的厚度将变薄，盖板较为容易发生形变。
可选地，所述盖板上设置有凸起。
由于盖板上设置有凸起，方便通过牵引该凸起使盖板发生形变，从而远离该谐振柱。当盖板发生向下形变后，为了使发生形变的盖板恢复到形变之前的位置，同样可以通过向上牵引凸起来实现。
可选地，当该盖板上设置有凹槽时，该凸起可以设置在该盖板的凹槽上。
可选地，所述盖板的材料为塑性金属材料，且所述盖板上设置有拉环。
盖板可以通过牵引该拉环的操作下发生形变，从而远离该谐振柱，以增大盖板与谐振柱之间的距离。当盖板发生向下的形变后，为了使发生形变的盖板恢复到形变之前的位置，同样可以通过向上牵引拉环来实现。
可选地，所述谐振柱与所述腔体一体成型或者分体连接。
其中，当谐振柱与腔体分体连接时，谐振柱与腔体可以通过焊接、螺钉等方式进行连接。
可选地，所述谐振柱为桶状谐振柱，且所述谐振柱的垂直剖面形状为H型、U型或者台阶型。
需要说明的是，该谐振柱的垂直剖面为垂直于水平面的剖面，且该垂直剖面形状可以为H型、U型或者台阶型。当然在实际应用中，该谐振柱的垂直剖面还可以是其他形状，比如，n型等等。其中，n型还可以称为开口向下的U型。
第二方面，本申请实施例提供了一种滤波器，所述滤波器包括如上述第一方面提供的腔体谐振器。
第三方面，本申请实施例提供了一种通信设备，所述通信设备包括上述第二方面提供 的滤波器。
由于盖板安装在腔体顶部的开口，谐振柱安装在腔体的底部，且通常情况下盖板与谐振柱之间的距离会改变分布的电容的大小，腔体与谐振柱之间的距离会改变分布电感的大小，因此，当盖板或谐振杆中的至少一个发生形变，导致盖板与谐振杆之间的距离产生变化时，将会改变分布的电容的大小，当谐振柱或腔体中至少一个发生形变，导致谐振柱或腔体之间的距离发生变化时，将会改变分布的电感的大小，从而达到调节谐振频率的目的，避免了因调谐螺杆与盖板之间的接触不良导致的互调敏感问题，提高了直通率。同时，由于简化了腔体谐振器的结构，避免了调谐螺钉的高度所占用的空间，从而降低了腔体谐振器的整体高度，减少了腔体谐振器对空间的占用。
附图说明
图1是现有技术中提供的一种腔体谐振器的结构示意图。
图2是本申请实施例提供的第一种腔体谐振器的结构示意图。
图3是本申请实施例提供的第二种腔体谐振器的结构示意图。
图4是本申请实施例提供的第三种腔体谐振器的结构示意图。
图5是本申请实施例提供的第四种腔体谐振器的结构示意图。
图6是本申请实施例提供的第五种腔体谐振器的结构示意图。
图7是本申请实施例提供的第六种腔体谐振器的结构示意图。
图8是本申请实施例提供的第七种腔体谐振器的结构示意图。
附图标记：
现有技术：1：腔体，2：谐振柱，3：螺钉，4：螺母，5：盖板，6：垫片，7：调谐螺杆；
本申请实施例：8：盖板、9：谐振柱，10：腔体。
具体实施方式
下面将结合附图对本申请实施方式作进一步地描述。
图2是本申请实施例提供的一种腔体谐振器的结构示意图，参见图2，该腔体谐振器包括盖板8、谐振柱9和腔体10；
盖板8安装在腔体10顶部的开口处，谐振柱9设置在腔体10的底部，且谐振柱9的顶部朝向盖板8；其中，盖板8、谐振柱9和腔体10中至少一个的材料为塑性金属材料，以通过该塑性金属材料的形变进行谐振频率调节。
由于盖板8安装在腔体10顶部的开口，谐振柱9设置在腔体10的底部，且盖板8与谐振柱9之间的距离会改变分布的电容的大小，腔体10与谐振柱9之间的距离会改变分布的电感的大小，因此，当盖板8或谐振杆9中的至少一个发生形变，导致盖板8与谐振杆9之间的距离产生变化时，将会改变分布的电容的大小，当谐振柱9或腔体10中至少一个发生形变，导致谐振柱9或腔体10之间的距离发生变化时，将会改变分布的电感的大小，从而达到调节谐振频率的目的，避免了因调谐螺杆与盖板之间的接触不良导致的互调敏感问 题，提高了直通率。同时，由于简化了腔体谐振器的结构，避免了调谐螺钉的高度所占用的空间，从而降低了腔体谐振器的整体高度，减少了腔体谐振器对空间的占用。
在本申请实施例中，均以该腔体谐振器的剖面图为例进行说明，并不对本申请实施例构成限定。
其中，该塑性金属材料可以是铝、铜等塑性金属材料，也可以是其他塑性金属材料。
需要说明的是，在本申请实施例中，谐振柱9与腔体10可以一体成型，也可以分体连接。其中，当谐振柱9与腔体10分体连接时，谐振柱9与腔体10可以通过焊接、螺钉等方式进行连接。
另外，该谐振柱9为桶状谐振柱，且该谐振柱的垂直剖面为垂直于水平面的剖面，且该垂直剖面形状可以为H型、U型或者台阶型。当然在实际应用中，该谐振柱的垂直剖面的形状还可以是其他形状，比如，n型等等。其中，n型还可以称为开口向下的U型。
其中，根据谐振柱9的形状的不同，本申请实施例可以至少包括如下4种实现方式。
在第一种可能的实现方式中，谐振柱9的垂直剖面形状可以为H型，该腔体10顶部设置开口，该谐振柱9可以安装在该腔体的内底面上，盖板8可以安装在腔体10顶部的开口处，该盖板8和腔体10中至少一个的材料为塑性金属材料。
其中，由于谐振柱9与腔体10可以一体成型，也可以分体连接，因此，当该谐振柱9与腔体分体连接时，谐振柱9可以直接通过螺钉、焊接等方式安装在该腔体的内底面上。或者，参见图2，该腔体10中可以设置凸台，该凸台上设置有螺纹孔，谐振柱9可以通过螺钉安装在凸台上。
需要说明的是，在第一种可能的实现方式中，该腔体10可以是顶部设置开口的圆柱形腔体，也可以是顶部设置开口的矩形腔体，还可以是顶部设置开口的不规则形状的腔体。
另外，在第一种可能的实现方式中，盖板8的材料可以为塑性金属材料，腔体10的材料可以为塑性金属材料，当然，盖板8和腔体10的材料均可以为塑性金属材料。
当盖板8的材料为塑性金属材料时，盖板8可以通过外力打击、按压等操作发生形变，盖板8的形变可以改变该盖板8和谐振柱9之间的距离，从而可以改变腔体谐振器中分布的电容的大小，以进行谐振频率调节。
其中，当盖板8的材料为塑性金属材料时，参见图3，该盖板8上可以设置有凹槽。由于当该盖板8设置有凹槽时，盖板8中凹槽所处位置的厚度将变薄，以便盖板8较为容易发生形变。
另外，参见图4，盖板8上可以设置凸起11，且当该盖板8上设置有凹槽时，该凸起11可以设置在该盖板8的凹槽上。为了便于说明，将靠近腔体底部的方向称为下方，将远离腔体底部的方向称为上方。盖板8可以在通过向上牵引该凸起11的操作下发生形变，从而远离谐振柱9，以增大盖板8与谐振柱9之间的距离。当盖板8发生向下的形变后，为了使发生向下形变的盖板8恢复到形变之前的位置，同样可以通过向上牵引凸起11来实现。当然在实际应用中，不仅可以通过在盖板8上设置凸起11，并通过向上牵引凸起11实现盖板8远离谐振柱9的目的，还可以在盖板8上设置拉环，并通过向上牵引拉环实现盖板8远离谐振柱9的目的。
可选的，该腔体10的材料同样可以为塑性金属材料，腔体10可以在外力的打击、按压等操作下发生形变，腔体10的形变可以改变腔体10与谐振柱9之间的距离，从而可以 改变腔体谐振器中分布的电感的大小，以进行谐振频率的调节。
另外，当盖板8和腔体10的材料均为塑性金属材料时，盖板8和腔体10中的任一个均可以发生形变，以进行谐振频率调节，当然，盖板8和腔体10也可以同时发生形变，以进行谐振频率调节。
值得说明的是，由于塑性金属材料具有形变后不反弹的特性，因此，盖板8或腔体10在外力作用下可以发生形变，且盖板8以及腔体10发生形变后不会进行反弹恢复。
在第二种可能的实现方式中，参见图5，谐振柱9的垂直剖面形状可以为U型，该谐振柱的底部与腔体10的内底面连接，从而安装在该腔体10的内底面上，盖板8安装在腔体10顶部的开口处，该盖板8和腔体10中至少一个的材料为塑性金属材料。
需要说明的是，在第二种可能的实现方式中，该腔体10可以是顶部设置开口的圆柱形腔体，也可以是顶部设置开口的矩形腔体，还可以是顶部设置开口的不规则形状的腔体。
另外，在第二种可能的实现方式中，盖板8的材料可以为塑性金属材料，腔体10的材料可以为塑性金属材料，当然，盖板8和腔体10的材料均可以为塑性金属材料。
其中，当盖板8的材料为塑性金属材料时，参见图5，该盖板8上可以设置有凹槽，以方便发生形变。另外，参见图6，该凹槽处还可以设置有凸起11，可以方便对盖板8进行向上牵引等操作，实现盖板8远离谐振柱9的目的。
另外，当该腔体10的材料为塑性金属材料，腔体10可以在外力作用下发生形变，腔体10的形变可以改变腔体10与谐振柱9之间的距离，从而可以改变腔体谐振器中分布的电感的大小，以进行谐振频率的调节。
需要说明的是，当盖板8和腔体10的材料均为塑性金属材料时，盖板8和腔体10中的任一个均可以发生形变，以进行谐振频率调节，当然，盖板8和腔体10也可以同时发生形变，以进行谐振频率调节。
在第三种可能的实现方式中，参见图7，该谐振柱9的垂直剖面形状可以为台阶型，腔体10顶部与底部均设置开口，谐振柱9的底部设置有开口，且谐振柱9底部的开口通过延伸与腔体10的底部开口连接，构成腔体的底面。
其中，在第三种可能的实现方式中，该腔体10可以是顶部与底部均设置开口的圆柱形腔体，也可以是顶部与底部均设置开口的矩形腔体，还可以是顶部与底部均设置开口的不规则形状的腔体。
需要说明的是，在第三种可能的实现方式中，谐振柱9的材料可以为塑性金属材料，且当谐振柱9的材料为塑性金属材料时，谐振柱9可以在外力的打击、按压等操作下发生形变。当谐振柱9发生靠近盖板8的形变时，也即是，谐振柱9在轴向上发生形变，减小谐振柱9与盖板8之间的距离，从而可以改变腔体谐振器中分布的电容的大小，以进行谐振频率调节；当谐振柱9发生靠近腔体10的形变时，也即是，谐振柱9在横向上发生形变，增大谐振柱9与腔体10之间的距离，从而可以改变腔体谐振器中分布的电感的大小，以进行谐振频率的调节。
值得说明的是，由于塑性金属材料具有形变后不反弹的特性，因此，当谐振柱9发生形变后，不会进行反弹恢复。
可选地，盖板8的材料可以为塑性金属材料，或者，腔体10的材料可以为塑性金属材料。当然，盖板8、谐振柱9和腔体10中的任意两个的材料均可以为塑性金属材料，或者， 盖板8、谐振柱9和腔体10的材料均可以为塑性金属材料。
另外，当盖板8的材料为塑性金属材料时，盖板8可以发生形变，以进行谐振频率调节。其中，该盖板8上还可以设置有凹槽，以便盖板容易发生形变。另外，该凹槽处可以设置有凸起11，可以方便对盖板8进行向上牵引等操作，实现盖板8远离谐振柱9的目的。
再者，当该腔体10的材料为塑性金属材料时，腔体10在外力作用下发生形变，腔体10的形变可以腔体10与谐振柱9之间的距离，从而可以改变腔体谐振器中分布的电感的大小，以进行谐振频率的调节。
需要说明的是，在本申请实施例中，当该谐振柱9、盖板8和腔体10的材料均为塑性金属材料时，可以只是谐振柱9发生形变，以进行谐振频率调节，也可以只是盖板8发生形变，以进行谐振频率调节，或者，只是腔体10发生形变，以进行谐振频率调节，又或者，可以是谐振柱9、盖板8和腔体10中的任意两个同时发生形变，以进行谐振频率调节，还可以是谐振柱9、盖板8和腔体10同时发生形变，以进行谐振频率调节。
在第四种可能的实现方式中，参见图8，谐振柱9的垂直剖面形状可以为n型，该谐振柱9的底部设置有开口，且谐振柱9底部的开口通过延伸与腔体10的底部开口连接，构成该腔体的底面。
其中，在第四种可能的实现方式中，该腔体10可以是顶部与底部均设置开口的圆柱形腔体，也可以是顶部与底部均设置开口的矩形腔体，还可以是顶部与底部均设置开口的不规则形状的腔体。
需要说明的是，在第四种可能的实现方式中，该谐振柱9的材料可以为塑性金属材料。
可选地，盖板8的材料可以为塑性金属材料，谐振柱9的材料可以为塑性金属材料，腔体10的材料也可以为塑性金属材料，当然，盖板8、谐振柱9和腔体10中的任意两个的材料均可以为塑性金属材料，或者，盖板8、谐振柱9和腔体10的材料均可以为塑性金属材料。
当盖板8的材料为塑性金属材料时，该盖板8可以发生形变，且该盖板8上可以设置有凹槽，以方便盖板8发生形变。另外，该凹槽处可以设置有凸起11，可以方便对盖板8进行向上牵引等操作，实现盖板8远离谐振柱9的目的。
其中，谐振柱9的形状为n型时，通过腔体谐振器进行谐振频率调节的操作与谐振柱的沿该谐振柱垂直剖面形状为台阶型时通过腔体谐振器进行谐振频率调节的操作相同，本申请实施例对此不在进行一一赘述。
可选的，不同的盖板8以及谐振柱9的形态，还可以构成其他的组合形式，例如图7或图8中的谐振杆还可以与图2至图4中的盖板向相结合使用，也可以与现有技术中的其他形态的盖板相结合使用，图2至图8中的盖板也可以与现有技术中的其他形态的谐振柱相结合使用，本申请对此不做限定。
在本申请实施例中，由于盖板安装在腔体顶部的开口，谐振柱安装在腔体的底部，且盖板与谐振柱之间的距离会改变分布的电容的大小，腔体与谐振柱之间的距离会改变分布的电感的大小，因此，当盖板或谐振杆中的至少一个发生形变，导致盖板与谐振杆之间的距离产生变化时，将会改变分布的电容的大小，当谐振柱或腔体中至少一个发生形变，导致谐振柱或腔体之间的距离发生变化时，将会改变分布的电感的大小，从而达到调节谐振频率的目的，避免了因调谐螺杆与盖板之间的接触不良导致的互调敏感问题，提高了直通 率。同时，由于简化了腔体谐振器的结构，避免了调谐螺钉的高度所占用的空间，从而降低了腔体谐振器的整体高度，减少了腔体谐振器对空间的占用。
本申请实施例提供了一种滤波器，该滤波器包括上述实施例中的腔体谐振器。
可选的，该滤波器中可以包括至少一个上述腔体谐振器。可选的，该滤波器也可以包含其他类型的谐振器，与上述腔体谐振器进行级联。可选的，该滤波器中还可以包括其他元件，比如，该滤波器还可以包括电容、电阻、电感等等。
在本申请实施例中，由于该腔体谐振器可以避免互调敏感，提高直通率，因此，当该滤波器中包括该腔体谐振器时，可以提高滤波器进行滤波的效率。
本申请实施例提供了一种通信设备，该通信设备包括上述实施例中的滤波器。
其中，该通信设备可以为双工器、无线收发设备、基站等等。
在本申请实施例中，由于通过该滤波器进行滤波时，可以避免互调敏感的问题，提高了直通率，因此，当该通信设备中包括该滤波器时，可以避免干扰信号对通信信号的干扰，提高了通信信号的传输质量和效率。
以上所述仅为本申请的较佳实施例，并不用以限制本申请，凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (10)

  1. 一种腔体谐振器，其特征在于，所述腔体谐振器包括盖板、谐振柱和腔体；
    所述盖板安装在所述腔体顶部的开口处，所述谐振柱设置在所述腔体的底部，且所述谐振柱的顶部朝向所述盖板；
    其中，所述盖板、所述谐振柱和所述腔体中至少一个的材料为塑性金属材料，以通过所述塑性金属材料的形变进行谐振频率调节。
  2. 根据权利要求1所述的腔体谐振器，其特征在于，所述腔体顶部设置开口，所述谐振柱安装在所述腔体的内底面上，所述盖板和所述腔体中至少一个的材料为塑性金属材料。
  3. 根据权利要求1所述的腔体谐振器，其特征在于，所述腔体顶部与底部均设置开口，所述谐振柱的底部设置有开口，且所述谐振柱底部的开口通过延伸后与所述腔体的底部开口连接，构成所述腔体的底面。
  4. 根据权利要求1至3任一项所述的腔体谐振器，其特征在于，所述盖板的材料为塑性金属材料，且所述盖板上设置有凹槽。
  5. 根据权利要求1至4任一项所述的腔体谐振器，其特征在于，所述盖板上设置有凸起。
  6. 根据权利要求1至5任一所述的腔体谐振器，其特征在于，所述盖板的材料为塑性金属材料，且所述盖板上设置有拉环。
  7. 根据权利要求1-6任一所述的腔体谐振器，其特征在于，所述谐振柱与所述腔体一体成型或者分体连接。
  8. 根据权利要求1-7任一所述的腔体谐振器，其特征在于，所述谐振柱为桶状谐振柱，且所述谐振柱的垂直剖面形状为H型、U型或者台阶型。
  9. 一种滤波器，其特征在于，包括如权利要求1-8任一项所述的腔体谐振器。
  10. 一种通信设备，其特征在于，包括如权利要求9所述的滤波器。
PCT/CN2017/071174 2017-01-13 2017-01-13 腔体谐振器、滤波器及通信设备 Ceased WO2018129719A1 (zh)

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