WO2011113279A1 - Résonateur diélectrique, pièce de blindage conductrice élastique, filtre diélectrique et dispositif de communication - Google Patents

Résonateur diélectrique, pièce de blindage conductrice élastique, filtre diélectrique et dispositif de communication Download PDF

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Publication number
WO2011113279A1
WO2011113279A1 PCT/CN2010/078089 CN2010078089W WO2011113279A1 WO 2011113279 A1 WO2011113279 A1 WO 2011113279A1 CN 2010078089 W CN2010078089 W CN 2010078089W WO 2011113279 A1 WO2011113279 A1 WO 2011113279A1
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WO
WIPO (PCT)
Prior art keywords
elastic conductive
elastic
dielectric resonator
cavity
dielectric
Prior art date
Application number
PCT/CN2010/078089
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English (en)
Chinese (zh)
Inventor
孙尚传
童恩东
Original Assignee
深圳市大富网络技术有限公司
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Filing date
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Application filed by 深圳市大富网络技术有限公司 filed Critical 深圳市大富网络技术有限公司
Publication of WO2011113279A1 publication Critical patent/WO2011113279A1/fr

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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
    • H01P1/208—Cascaded cavities; Cascaded resonators inside a hollow waveguide structure
    • H01P1/2084—Cascaded cavities; Cascaded resonators inside a hollow waveguide structure with dielectric resonators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P7/00—Resonators of the waveguide type
    • H01P7/10—Dielectric resonators

Definitions

  • Dielectric resonator Dielectric resonator, elastic conductive shield, dielectric filter and communication device
  • Embodiments of the present invention relate to the field of dielectric filter technologies, and in particular, to a dielectric resonator, an elastic conductive shield, a dielectric filter, and a communication device.
  • the dielectric filter is designed and manufactured by the dielectric ceramic material with low loss, high dielectric constant, small temperature coefficient of temperature, small thermal expansion coefficient and high power consumption. It is characterized by low insertion loss and good power resistance.
  • FIG. 1 the figure is a schematic diagram of a TM (transverse magnetic) mode dielectric filter, which is mainly composed of a dielectric resonator 101 and a metal cavity 102.
  • TM transverse magnetic
  • Medium of the resonator in the mode dielectric filter It is important to ground the upper and lower end faces of the resonator column, otherwise the performance of the filter will be affected.
  • the dielectric resonator includes a dielectric resonator column 202 and a metal cavity 204.
  • the dielectric resonator column 202 is located in the housing, and a bottom surface of the dielectric resonator column 202 is in contact with a bottom surface of the housing.
  • the dielectric resonator further includes: a cap plate 203 and a conductive elastomer 201.
  • the cover plate 203 is located on the upper surface of the metal cavity 204, that is, the cavity top, for sealing the metal cavity 304.
  • the conductive elastic body 201 is located between the cover plate 203 and the dielectric resonator column 202 for sealingly contacting the cover plate 203 and the medium of the dielectric resonator column 202.
  • the dielectric resonator column 202 is grounded through the shield cover 203.
  • the inventors of the present invention have found that in the prior art, in order to solve the problem of grounding on the upper surface of the dielectric resonator column, a conductive elastic body is used, and the conductive elastic body is in contact with the cover plate, and then passed.
  • the cavity is grounded, but during the installation process, due to manufacturing defects such as reinforcement and conductive elastomer, uneven force, temperature variation, and assembly error, it is difficult to ensure close contact between the dielectric resonator and the reinforcement.
  • the ground surface of the dielectric resonator column cannot be reliably grounded.
  • Embodiments of the present invention provide a shield resonator, an elastic conductive shield, and a dielectric filter, which can make the grounding of the upper surface of the dielectric resonator column more reliable.
  • a dielectric resonator includes a dielectric resonator column and a cavity.
  • the dielectric resonator column is disposed in the cavity, and further includes: an elastic conductive shielding member, the elastic conductive shielding member sealing the cavity.
  • the body forms a resonant cavity, and the elastic conductive shielding member is in elastic contact with the dielectric resonant column, so that the upper surface of the dielectric resonant column is directly grounded through the elastic conductive shielding member.
  • An elastic conductive shielding member is applied to a dielectric filter, wherein the elastic conductive shielding member seals the cavity to form a resonant cavity, and the elastic conductive shielding member comprises an elastic shielding region and a common shielding region, and the elastic A through hole is disposed in the shielding area for the screw to pass through the through hole, and the common shielding area of the elastic conductive shielding member is locked between the reinforcing member and the cavity to realize the elastic conductive shielding member to the cavity Sealed.
  • a dielectric filter includes a cavity and a dielectric resonator column, and further includes: an integral elastic conductive shielding member, the elastic conductive shielding member sealing the cavity to form a resonant cavity, and the elastic conductive shielding member Elastic contact with the respective dielectric resonator columns in the cavity, such that the upper surface of the dielectric resonator column is directly grounded through the elastic conductive shield.
  • a communication device includes the medium filter described above, and the media filter is disposed in a signal transmitting and receiving circuit portion of the communication device for selecting a signal.
  • the dielectric resonator of the embodiment of the present invention includes a dielectric resonator column and a cavity.
  • the dielectric resonator column is disposed in the cavity, and further includes: an elastic conductive shielding member, the elastic conductive shielding member sealing the cavity to form The resonant cavity, the elastic conductive shield is in elastic contact with the dielectric resonator column, such that the upper surface of the dielectric resonator column is directly grounded through the elastic conductive shield. Because the cavity is directly sealed by the elastic conductive shielding member to form a resonant cavity, instead of the function of the original cover plate, the design cost is reduced, and the upper surface of the dielectric resonant column is directly grounded through the elastic conductive shielding member, and grounded.
  • FIG. 1 is a schematic structural view of a prior art TM mode dielectric filter
  • FIG. 2 is a schematic structural view of another prior art TM mode dielectric filter
  • FIG. 3 (a) is a schematic structural view of a dielectric resonator according to an embodiment of the present invention.
  • 3(b) is a schematic structural view of another dielectric resonator according to Embodiment 1 of the present invention.
  • FIG. 4 is a schematic structural view of an elastic conductive shield used in a dielectric resonator according to Embodiment 2 of the present invention
  • FIG. 5 is a schematic structural view of an elastic conductive shield used in a dielectric filter according to Embodiment 3 of the present invention
  • FIG. 6(a) is the present invention
  • Embodiment 4 is a schematic cross-sectional structure of a dielectric filter
  • Figure 6 (b) is a perspective view showing the structure of a dielectric filter according to a fourth embodiment of the present invention.
  • the present invention provides a dielectric resonator comprising a dielectric resonator column and a cavity.
  • the dielectric resonator column is disposed in the cavity, and further includes: an elastic conductive shielding member, the elastic conductive shielding member sealing the cavity to form a resonance
  • the elastic conductive shielding member is in elastic contact with the dielectric resonant column, so that the upper surface of the dielectric resonant column is directly grounded through the elastic conductive shielding member.
  • the elasticity of the elastic conductive shield allows the dielectric resonator column to maintain good contact with the elastic conductive shield under temperature changes, thereby achieving good grounding of the upper surface of the dielectric resonator column, thereby improving the filtering performance.
  • the dielectric resonator provided by the present invention will be described in detail below with reference to the embodiments.
  • Embodiment 1 A dielectric resonator is shown in FIG. 3( a ) and includes: The dielectric resonator 310, the cavity 320, the dielectric resonator 310 is disposed in the cavity 320, and further includes: an elastic conductive shield 340, the elastic conductive shield 340 sealing the cavity 320 to form a resonant cavity, The elastic conductive shield 340 is in elastic contact with the dielectric resonator 310, such that the upper surface of the dielectric resonator 310 is directly grounded through the elastic conductive shield 340.
  • the dielectric resonant column 310 provided in this embodiment may further include: a stiffener 330.
  • the specific elastic conductive shield 340 may include an elastic shielding region 341 and a common shielding region 342, and the elastic conductive shielding member.
  • a through hole is disposed in the common shielding area, and the screw 331 passes through the through hole to lock the common shielding area 342 of the elastic conductive shielding member 340 between the reinforcing member 330 and the cavity 320.
  • the elastic shielding region 341 of the conductive shield 340 is in elastic contact with the dielectric resonator column 310 such that the dielectric resonator column 310 is directly grounded through the elastic conductive shield 340. As shown in FIG.
  • the reinforcing member 330 is a metal plate, and the structure is similar to that of the prior art cover. It can be understood that the structure of the reinforcing member 330 can also be a mesh structure or a separate structure.
  • the structure of the specific reinforcing member may take various forms, and the specific implementation form does not constitute a limitation on the present invention. Of course, the material of the reinforcing material may also be a non-metallic material that meets the required strength, such as Plastic, or wood materials, etc.
  • the elastic conductive shield 340 can always maintain good contact with the dielectric resonator 310 by elastic deformation after the entire dielectric resonator is assembled.
  • the elastic shielding portion 341 of the elastic conductive shielding member 340 and the ordinary shielding portion 342 can be stamped by integral molding.
  • the material of the elastic conductive shielding member may be beryllium copper. In order to ensure high electrical conductivity, the surface of the beryllium copper may be plated with silver.
  • the elastic conductive shielding member can also be made of other materials, such as phosphor bronze. The specific conductive material does not constitute a limitation of the present invention.
  • the elastic conductive shielding member is designed to seal the size of the cavity, so that the elastic conductive shielding member can replace the functional sealing cavity of the original cover plate, and is composed of an elastic conductive shielding member and a cavity.
  • Resonant cavity, and the reinforcement is similar to the existing cover, but its function is only used to reinforce the elastic conductive shield and the mounting screws, so the design of the reinforcement is flexible, for example, it is not limited by the materials currently used. Non-conductive materials such as rigid plastics, glass, etc. are used.
  • “Sealed" means preventing electromagnetic leakage from the resonant cavity.
  • the upper surface of the dielectric resonator column may be metallized. After the metallization treatment, the upper surface of the dielectric resonator column and the elastic shielding region of the elastic conductive shielding member are in close contact with each other by welding, and further Improve the contact reliability between the elastic conductive shield and the dielectric resonator.
  • the lower surface of the dielectric resonator column is mounted on the bottom surface of the cavity by soldering.
  • the lower surface of the dielectric resonator column may be metallized after the medium.
  • the metal mounting seat is welded to the lower surface of the resonant column, and the metal mounting seat is fixed to the bottom surface of the cavity by screws, so that the ground surface of the dielectric resonant column is grounded. This makes it easier to install the resonant column, and also allows the technician to avoid damage to the cavity during subsequent repair or replacement of the resonant column, reducing maintenance costs.
  • the dielectric resonator of the embodiment of the present invention includes a dielectric resonator column and a cavity.
  • the dielectric resonator column is disposed in the cavity, and further includes: an elastic conductive shielding member, the elastic conductive shielding member sealing the cavity to form The resonant cavity, the elastic conductive shield is in elastic contact with the dielectric resonator column, such that the upper surface of the dielectric resonator column is directly grounded through the elastic conductive shield. Because the cavity is directly sealed by the elastic conductive shielding member to replace the original cover plate, and the upper surface of the dielectric resonator column is directly grounded through the elastic conductive shield, the grounding is more reliable, and the medium is improved. Performance indicators of the resonator.
  • the elastic conductive shielding member directly seals the cavity to form a resonance space, which replaces the function of the original cavity resonator cover plate, reduces the requirement of the filter parameter on the cover plate, and can further reduce the cover plate. Production costs.
  • the dielectric resonant column may be made of ceramic material or other high dielectric constant material.
  • the manufacturing method and process of the specific dielectric resonant column may refer to the existing dielectric ceramic forming process, and the present invention is no longer Narration.
  • the dielectric resonator is described.
  • the structure of the elastic conductive shield used in the first embodiment will be specifically described below.
  • Embodiment 2 An elastic conductive shielding member is applied to a dielectric filter, wherein the elastic conductive shielding member seals the cavity to form a resonant cavity, and the structural schematic diagram is as shown in FIG. 4, including: including an elastic shielding region 341 and a common shielding area 342, the elastic shielding area 341 is provided with a through hole 343 for the screw to pass through the through hole, and the common shielding area of the elastic conductive shielding member is locked to the reinforcing member and the cavity Between the bodies, the sealing of the cavity by the elastic conductive shield is realized.
  • a through hole 344 is provided in the middle of the existing elastic shielding region, and the tuning screw for the dielectric filter passes through.
  • the elastic shielding zone and the common shielding zone may be integrally formed.
  • the elastic shielding zone and the through hole may be realized by stamping.
  • the elastic conductive shielding member is made of beryllium copper. And the copper surface is silver plated.
  • the elastic conductive shielding member may also adopt other materials, such as phosphor bronze, etc., and the specific conductive material does not constitute a limitation of the present invention.
  • the dielectric resonators in the plurality of embodiments 2 may be composed of a dielectric filter, and each cavity of the dielectric filter uses an integral elastic conductive shield.
  • each cavity of the dielectric filter uses an integral elastic conductive shield.
  • Embodiment 3 An elastic conductive shielding member, a schematic structural view is shown in FIG. 5 (only a part of the structure is shown), the elastic conductive shielding member includes a plurality of elastic shielding regions 510, and a plurality of elastic shielding regions are adopted.
  • the common shielding regions 520 are connected, and each of the elastic shielding regions 510 corresponds to the position of the dielectric resonator column in the dielectric filter.
  • the elastic conductive shield can be integrally formed by stamping or other processes.
  • the plurality of elastic shielding regions and the through holes through which the screws pass may be pressed out by one or more punching.
  • the elastic conductive shielding member is generally sized to be equivalent to the size of the reinforcing member, directly replacing the function of the original cover plate, forming a closed space with the cavity to form a resonant cavity, and using a reinforcing device instead
  • the original cover, the choice of material and shape structure can be more flexible.
  • the elastic shielding regions of the elastic conductive shielding members are connected by a common shielding region, and the overall design makes the processing cost of the elastic conductive shielding member greatly reduced, the assembly is convenient, the structure is stable, and Reliable performance.
  • Embodiment 4 A dielectric filter, comprising: a cavity and a dielectric resonator column, further comprising: an integral elastic conductive shield, the integral elastic conductive shield sealing the cavity to form a resonant cavity,
  • the integral elastic conductive shield is in elastic contact with each of the dielectric resonator columns in the cavity, such that the upper surface of the dielectric resonator column is directly grounded through the integral elastic conductive shield.
  • the conventional components contained therein or the technical solutions obtained by simple replacement are all within the scope of the present invention.
  • a dielectric filter as shown in FIG. 6) and FIG. 6(b), includes: a cavity 610 and a reinforcing member 620 and an integral elastic conductive shield 630 fixed between the cavity and the reinforcing member 620.
  • An elastic shielding region 631 is disposed on the entire elastic conductive shielding member 630 corresponding to each of the dielectric resonator columns 640 in the cavity, and the remaining portion is a common shielding region 632.
  • the common shielding region 632 is provided with a through hole 633 for fixing the overall elastic conductive
  • the fixing screw 621 passes through the through hole 633 to lock the common shielding area 632 of the integral elastic conductive shielding member 630 between the reinforcing member 620 and the cavity 610, and the integral elastic conductive shielding
  • the elastic shielding region 631 of the member is in elastic contact with the dielectric resonator column 640 such that the dielectric resonator column 640 is directly grounded through the integral elastic conductive shield. It can be understood that a central portion of the elastic shielding portion of the integral elastic conductive shield is provided with a through hole for the screw to pass through.
  • the reinforcing member may not be included, but the ordinary shielding region of the integral elastic conductive shield is directly screwed to the cavity.
  • the protection plate it is also possible to increase the protection plate to cover the integral elastic conductive shielding member to form a protection by means of screws or snaps.
  • the elastic shielding zone and the ordinary shielding zone of the integral elastic conductive shielding member may be integrally formed, for example, one or more stampings may be performed on one integral plate.
  • the material of the integral elastic conductive shield can be made of beryllium copper, and the surface of the beryllium copper is plated with silver to increase the electrical conductivity.
  • the whole elastic conductive shielding member can also adopt other materials, such as phosphor bronze, etc., and the specific conductive material does not constitute a limitation of the present invention.
  • the upper surface of the dielectric resonator column and the elastic shielding region of the integral elastic conductive shielding member may be further adopted; 1: the early contact mode is in close contact, so that the conductive performance is better.
  • the dielectric resonator and the dielectric filter provided by the present invention, only the parts related to the technical solutions of the present invention and the technical problems to be solved are pointed out. It is understood that the dielectric resonator or medium
  • the filter may also include other conventional components, and the use of specific components does not constitute a limitation of the present invention.
  • the dielectric resonator, the elastic conductive shielding member and the dielectric filter provided by the embodiments of the present invention are described in detail above, wherein:
  • a dielectric resonator includes a dielectric resonator column and a cavity.
  • the dielectric resonator column is disposed in the cavity, and further includes: an elastic conductive shielding member, the elastic conductive shielding member sealing the cavity to form The resonant cavity, the elastic conductive shield is in elastic contact with the dielectric resonator column, such that the upper surface of the dielectric resonator column is directly grounded through the elastic conductive shield. Since the cavity is directly formed by sealing the cavity with an elastic conductive shield, the elastic conductive shield replaces the function of the original cover plate, thereby reducing the cost of the product, and the upper surface of the dielectric resonator column directly passes through the elastic conductive shield.
  • the elastic conductive shielding member directly seals the cavity to form a resonance space, which replaces the function of the original cavity resonator cover plate, reduces the requirement of the filter parameter on the cover plate, and can further reduce the cover plate. Production costs.
  • the elastic shielding regions of the elastic conductive shielding members are connected by an ordinary shielding region, and the overall design makes the processing cost of the elastic conductive shielding member greatly reduced, and the assembly is convenient.
  • the structure is stable and reliable.
  • a metal mount is soldered on the lower surface of the dielectric resonator column, and the metal mount is fixed to the cavity by screws.
  • the inner bottom surface of the body enables the grounding of the lower surface of the dielectric resonator column. This makes it easier to install the resonant column, and also allows the technician to avoid damage to the cavity during subsequent repair or replacement of the resonant column, reducing maintenance costs.
  • the description of the examples is only for helping to understand the method of the present invention and its core ideas; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in specific embodiments and application scopes. The description is not to be construed as limiting the invention.

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Abstract

Des modes de réalisation de la présente invention portent sur un résonateur diélectrique, une pièce de blindage conductrice élastique, un filtre diélectrique et un dispositif de communication. Le résonateur diélectrique décrit par les modes de réalisation de la présente invention comprend une colonne résonante diélectrique et un corps à cavité, ladite colonne résonante diélectrique étant placée dans ledit corps à cavité. Le résonateur diélectrique comprend également une pièce de blindage conductrice élastique. Ladite pièce de blindage conductrice élastique ferme ledit corps à cavité et forme une cavité résonante. Ladite pièce de blindage conductrice élastique est en contact élastique avec ladite colonne résonante diélectrique, ce qui permet à la surface supérieure de la colonne résonante diélectrique d'être directement mise à la masse par l'intermédiaire de ladite pièce de blindage conductrice élastique. Etant donné que la pièce de blindage conductrice possédant de l'élasticité est directement utilisée pour fermer ledit corps à cavité et former la cavité résonante, la fonction de la plaque de recouvrement originale est remplacée par la pièce de blindage conductrice élastique, et le coût du produit est réduit. En même temps, la surface supérieure de la colonne résonante diélectrique est directement mise à la masse par l'intermédiaire de ladite pièce de blindage conductrice élastique, ce qui permet de rendre plus fiable la mise à la masse et d'améliorer l'indice de performance du résonateur diélectrique.
PCT/CN2010/078089 2010-03-17 2010-10-25 Résonateur diélectrique, pièce de blindage conductrice élastique, filtre diélectrique et dispositif de communication WO2011113279A1 (fr)

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Application Number Priority Date Filing Date Title
CN2010101313804A CN101895004A (zh) 2010-03-17 2010-03-17 介质谐振器、弹性导电屏蔽件和介质滤波器
CN201010131380.4 2010-03-17

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Cited By (3)

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GB2505873A (en) * 2012-08-07 2014-03-19 Filtronic Wireless Ltd A microwave TM mode cavity resonator wherein a portion of the length of the resonator body is a dielectric and a further portion is a metal
US20150325902A1 (en) * 2012-12-14 2015-11-12 Zte Corporation Tm dielectric resonator, method for implementing tm dielectric resonator and tm dielectric filter
US20150364807A1 (en) * 2012-12-10 2015-12-17 Zte Corporation Dielectric Resonator, Assembly Method Therefor, and Dielectric Filter

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CN102509826A (zh) * 2011-11-17 2012-06-20 摩比天线技术（深圳）有限公司 一种tm模介质滤波器
CN103296370B (zh) * 2012-02-29 2018-02-16 深圳光启创新技术有限公司 谐振腔
US9190705B2 (en) * 2012-03-26 2015-11-17 The Chinese University Of Hong Kong Dual mode dielectric resonator filter having plural holes formed therein for receiving tuning and coupling screws
KR101588874B1 (ko) * 2014-03-28 2016-01-27 주식회사 이너트론 공진기 및 이를 포함하는 필터
CN108539355A (zh) * 2018-06-12 2018-09-14 南京林业大学 一种基于金属纳米介质柱的多频率谐振腔

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GB2505873A (en) * 2012-08-07 2014-03-19 Filtronic Wireless Ltd A microwave TM mode cavity resonator wherein a portion of the length of the resonator body is a dielectric and a further portion is a metal
GB2505873B (en) * 2012-08-07 2019-10-02 Filtronic Wireless Ltd A microwave TM mode resonator and an electrical filter including such a resonator
US20150364807A1 (en) * 2012-12-10 2015-12-17 Zte Corporation Dielectric Resonator, Assembly Method Therefor, and Dielectric Filter
US9941564B2 (en) * 2012-12-10 2018-04-10 Zte Corporation Dielectric resonator, assembly method therefor, and dielectric filter
US20150325902A1 (en) * 2012-12-14 2015-11-12 Zte Corporation Tm dielectric resonator, method for implementing tm dielectric resonator and tm dielectric filter
US9935348B2 (en) * 2012-12-14 2018-04-03 Zte Corporation TM dielectric resonator, method for implementing TM dielectric resonator and TM dielectric filter

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