WO2013016920A1 - Cavité résonante et filtre ayant la cavité résonante - Google Patents

Cavité résonante et filtre ayant la cavité résonante Download PDF

Info

Publication number
WO2013016920A1
WO2013016920A1 PCT/CN2011/083811 CN2011083811W WO2013016920A1 WO 2013016920 A1 WO2013016920 A1 WO 2013016920A1 CN 2011083811 W CN2011083811 W CN 2011083811W WO 2013016920 A1 WO2013016920 A1 WO 2013016920A1
Authority
WO
WIPO (PCT)
Prior art keywords
resonant cavity
metamaterial
cavity
resonant
sheets
Prior art date
Application number
PCT/CN2011/083811
Other languages
English (en)
Chinese (zh)
Inventor
刘若鹏
栾琳
刘京京
苏翠
刘豫青
刘尧
钟果
李平军
任春阳
Original Assignee
深圳光启高等理工研究院
深圳光启创新技术有限公司
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
Priority claimed from CN201110216460.4A external-priority patent/CN103187609B/zh
Priority claimed from CN201110216572.XA external-priority patent/CN103187604B/zh
Priority claimed from CN201110233307.2A external-priority patent/CN102945997B/zh
Application filed by 深圳光启高等理工研究院, 深圳光启创新技术有限公司 filed Critical 深圳光启高等理工研究院
Publication of WO2013016920A1 publication Critical patent/WO2013016920A1/fr

Links

Classifications

    • 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

Definitions

  • the present invention relates to the field of wireless communications, and more particularly to a resonant cavity and a filter having the same. Background technique
  • the cavity filter is composed of several microwave resonators, each of which has an arbitrary shape of a cavity surrounded by a conductive wall (or a magnetic conductive wall), and can form an electromagnetically oscillated medium region therein, which has a storage Electromagnetic energy and the characteristics of selecting a certain frequency signal.
  • the resonant cavity is a resonant component that operates at a microwave frequency.
  • the resonant frequency of the microwave resonant cavity depends on the volume of the cavity. Generally, the larger the resonant cavity volume, the lower the resonant frequency, and the larger the resonant cavity volume, the higher the resonant frequency. How to reduce the resonant frequency of the resonant cavity without increasing the size of the resonant cavity is of great significance for the miniaturization of the resonant cavity. Summary of the invention
  • the technical problem to be solved by the present invention provides a d, a volume of a resonant cavity and a filter.
  • the invention provides a resonant cavity, the inside of which is a cavity, and at least one metamaterial sheet is placed inside the cavity, and each of the metamaterial sheets comprises a substrate made of a non-metal material and an artificial material attached to the surface of the substrate.
  • Microstructure, the artificial microstructure is a geometrically patterned structure composed of wires of a conductive material.
  • the super-material sheets There are a plurality of the super-material sheets, and the super-material sheets are arranged in parallel with each other. There are a plurality of the super-material sheets, and the surfaces of the super-material sheets are integrally connected in contact with each other. Wherein, a wave-transparent material is placed between adjacent two super-material sheets.
  • the resonant cavity further includes a first metamaterial plate, an input end and an output end, the first metamaterial plate is composed of the at least one metamaterial sheet, the first metamaterial plate is to be the cavity
  • the input end and the output end are respectively located in two chambers, and the input end and the output end are respectively mounted on inner walls of both sides of the cavity.
  • the plurality of metamaterial sheets are provided, and each of the two chambers is respectively provided with a second metamaterial board, and the two second metamaterial boards are respectively coupled with the input end and the output end.
  • the second metamaterial sheet is composed of at least one of the metamaterial sheets.
  • the resonant cavity further includes a tuning screw mounted on the inner wall of the top of the cavity, between the input end and the output end, and located directly above the first metamaterial board.
  • the artificial microstructure is a structure in which a wire is spirally wound.
  • a cavity is disposed in the cavity, and the metamaterial sheet layer is fixed on the support.
  • the support is made of a wave permeable material.
  • the socket is provided with a slot, and the metamaterial sheet layer is inserted into the slot.
  • the artificial microstructure is a cross shape or a cross shape.
  • the cross-shaped derivative has four identical branches, and any of the branches is rotated 90 degrees, 180 degrees, and 270 degrees in a row as a center of rotation, and then coincides with the other three branches in turn.
  • each branch is connected to the other three branches at the same end, and the other end is a free end, and at least one bent portion is disposed between the two ends.
  • the free end of the branch is connected with a line segment.
  • the artificial microstructure is made of metal.
  • the material of the substrate is ceramic, polytetrafluoroethylene, epoxy resin, ferroelectric material, ferrite material, ferromagnetic material or FR-4.
  • embodiments of the present invention also provide a filter including at least one of the above-described resonant cavities.
  • the implementation of the resonant cavity of the present invention has the following beneficial effects:
  • BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in the claims Other drawings may also be obtained from these drawings without the inventive labor.
  • FIG. 1 is a schematic view of a resonant cavity of a first embodiment of the present invention
  • FIG. 2 is a schematic structural view of a metamaterial sheet of the resonator shown in FIG. 1;
  • FIG. 3 is a schematic structural view of a derivative structure in which an artificial microstructure is an I-shaped shape
  • Figure 4 is a schematic view showing the structure of an artificial microstructure having a cross shape
  • FIG. 5 to FIG. 8 are schematic structural views showing the artificial microstructures of the other four cross-shaped derivations;
  • FIG. 9 is a schematic structural view of the resonant cavity of the second embodiment of the present invention.
  • Figure 10 is a schematic view showing the artificial microstructure being the first spiral structure
  • Figure 11 is a schematic view showing the artificial microstructure being a second spiral structure
  • Figure 12 is a schematic view showing the artificial microstructure as a third spiral structure
  • Figure 13 is a schematic view showing the structure of a resonant cavity in accordance with a third embodiment of the present invention.
  • Figure 14 is a simulation diagram when the resonant cavity is not placed in the first metamaterial plate
  • Figure 15 is a simulation diagram after the first metamaterial plate is added to the resonant cavity
  • Fig. 16 is a view showing the configuration of a filter of a fourth embodiment of the present invention. Specific embodiment
  • the invention relates to a resonant cavity, which mainly refers to a microwave resonant cavity.
  • a resonant cavity provided by a first embodiment of the present invention has a cavity 8 filled with a medium inside.
  • the medium filled in the cavity 8 of the present invention is a metamaterial.
  • the metamaterial includes at least one metamaterial sheet 1.
  • the metamaterial sheets 1 When there is one of the metamaterial sheets 1, it can be directly fixed into the cavity 8.
  • a wave-transparent material such as foam may be placed between adjacent two super-material sheets 1 to separate them. open.
  • a cavity can be placed in the cavity 8, and a socket is arranged on the support, and the whole of the plurality of metamaterial sheets 1 is inserted into the slot so that they are placed in parallel with each other.
  • the support is preferably a wave permeable material such as foam.
  • the metamaterial sheet layer 1 includes a flat substrate 3 and an artificial microstructure 2 attached to the surface of the substrate 3.
  • the substrate 3 is made of a non-metallic material such as polytetrafluoroethylene, epoxy resin, ceramics, ferroelectric material, ferrite material, ferromagnetic material, FR-4 material, and the like.
  • the artificial microstructure 2 is a structure of a certain geometric pattern composed of at least one wire on the surface of the substrate 3, such as a "work" shape, an open resonance ring, and the like.
  • the wires of the artificial microstructure 2 are made of a conductive material, usually a metal such as silver, copper, etc., and may also be made of other non-metallic conductive materials such as ITO.
  • the wire has a line width of less than 1 mm, preferably a processable minimum line width of, for example, 0.1 mm; the thickness of the wire is 4 inches, usually the thickness of the plating layer, typically less than 0.1 mm in the present invention, and the column: 3 ⁇ 4 port 0.018 mm.
  • the artificial microstructure 2 such as an I-shape, which includes a first metal wire 201 that is in line and two that are connected at both ends of the first metal wire 201 and are vertically divided by the first metal wire 201.
  • the second metal wire 202; such an I-shaped artificial microstructure can be further derivatized to obtain an I-shaped derivative shape, as shown in FIG. 3, which includes, in addition to the first and second metal wires, respectively connected to each A third metal line 203 at both ends of the second metal line 202 and vertically divided by the second metal line 202, and a fourth metal line 204 respectively connected to each of the third metal lines 203 and vertically divided by the third metal line 203 , and so on, continue to derive.
  • the artificial microstructure 2 of the present invention may also be a cross-shaped derivative shape including two first metal wires 201 that are vertically and halved to form a cross, and are further connected to the ends of each of the first metal wires 201, respectively.
  • a derivative shape formed by the second metal line 202 vertically divided by the first metal line 201 is as shown in FIG. 2; further, when the artificial microstructure is divided into the first and second metal lines, it may further comprise a third metal line 203 at both ends of the second metal line 202 and vertically divided by the second metal line 202, and a first line respectively connected to each of the third metal lines 203 and vertically divided by each of the third metal lines 203
  • the four metal wires 204 are structured as shown in FIG. Other derivatives can also be obtained by analogy.
  • the artificial microstructure 2 includes four identical branches 210, and any of the branches 210 is rotated 90 degrees, 180 degrees, and 270 degrees in sequence with a point as a center of rotation, respectively.
  • the three branches 210 coincide. Therefore, such an artificial microstructure 2 is an isotropic structure, and its response characteristics to electromagnetic waves are the same in all directions of the plane in which it is located, and the above-described cross-shaped derivative artificial microstructures as shown in FIGS. 2 and 4 also have such a structure. Characteristics.
  • the four branches 210 may be connected in one end to be integrated.
  • each branch 210 is connected to the other three branches 210 at the same end, and the other end is a free end, and at least one bent portion is disposed between the two ends.
  • the bend here can be a right angle
  • the bending, as shown in Fig. 5, may also be a sharp corner bending as shown in Fig. 6 and Fig. 7, and may also be a rounded corner, as shown in Fig. 8.
  • the outer portion of the free end may also be connected with a straight line segment. As shown in Figs. 7 and 8, the end point of the free end is preferably connected to the midpoint of the line segment.
  • the metamaterial sheet Due to the existence of the artificial microstructure 2 made of a conductive material, the metamaterial sheet has a high dielectric constant, and after being incorporated into the cavity, the resonant frequency of the cavity can be significantly reduced, so that the filter composed of a plurality of resonators is formed. Miniaturization is possible.
  • the cavity shown in Figure 1 is a 20mm 20mm 20mm cube
  • the metamaterial sheet is 15mm 12mm 1.018mm
  • the substrate is ceramic
  • the thickness is 1mm
  • each artificial microstructure is as shown in Figure 1.
  • the cross-shaped derivative shown in Fig. 2 has a size of 3 mm x 3 mm
  • each of the substrates is arranged with 4 x 5 human microstructures. It can be seen from the simulation that the first and second resonant frequencies are both 0 and the third resonant frequency is 1.9699 GHz.
  • the resonant frequency of the cavity is 10 GHz. It can be seen that after adding the metamaterial structure, its resonant frequency is reduced to 1.9699 GHz.
  • the first and second resonant frequencies are 0, indicating that the low-order modes are suppressed, and the higher-order modes are excited, and the more The higher the Q mode, the higher the Q value means that the loss of the cavity is small.
  • a resonant cavity 200 according to a second embodiment of the present invention is provided.
  • the resonant cavity 200 is substantially the same as the resonant cavity of the first embodiment, except that the resonant cavity 200 is also in the cavity.
  • a tuning screw 106 is mounted on the top inner wall of the 104, and an input end 150 and an output end 105 are mounted on the inner walls of both sides of the cavity 104.
  • the metamaterial sheet layer 101a constitutes a first metamaterial sheet 101.
  • the first metamaterial sheet 101 includes five metamaterial sheets 101a.
  • the first metamaterial sheet 101 is placed on the inner wall of the bottom of the cavity 104.
  • the inner space of the cavity 104 is divided into two, that is, the original one cavity 104 is divided into two. a chamber. Since the first metamaterial sheet 101 is disposed opposite the tuning screw 106 and spaced apart from the tuning screw 106, the two chambers are not completely closed, but the two chambers pass through the first metamaterial. The spacing between the plate 101 and the tuning screw 106 is in communication, the input end 150 and the output end 105 are respectively located in the two chambers, and the wires of the two pass through the first metamaterial sheet 101.
  • the transmission characteristics of the cavity can reach the effect of bandwidth. While realizing the bandwidth, in order to reduce the volume of the resonant cavity, the resonant frequency of the resonant cavity should also be minimized, which can be achieved by utilizing the characteristics of the first metamaterial plate.
  • the metamaterial sheet layer 101a can exhibit special, even natural, properties that are difficult to achieve, such as higher dielectric constant, negative magnetic permeability, negative refractive index, and the like.
  • the metamaterial sheet layer 101a in this embodiment enables the resonant cavity to have a resonance bandwidth effect.
  • Fig. 10 is a clockwise, counterclockwise spiral at both ends of a wire
  • Fig. 11 is a synchronous spiral of a wire folded in half
  • Fig. 12 is a structure in which four identical spirals are connected at one end. Such a spiral structure enables the first metamaterial block to have a high dielectric constant, thereby functioning as a low frequency point.
  • the resonator of the present invention is also at the input terminal 150 and the output terminal 105 in addition to all the components and structures as shown in FIG.
  • the ends are respectively contacted with a second metamaterial plate 107, and the two second metamaterial plates 107 are respectively located in the two chambers, and are not in contact with the first metamaterial plate 101.
  • adjusting the tuning screw 106 changes the coupling form in the cavity, thereby making the frequency and the differential loss adjustable.
  • the second metamaterial sheet 107 is also composed of at least one metamaterial sheet, which may be the same substrate and artificial microstructure as the first metamaterial sheet 101 described above, or may be different, but The size should be smaller than the first metamaterial sheet 101.
  • the resonant cavity shown in FIG. 9 is used when the first metamaterial plate 101 is not placed, and its S-parameter simulation diagram is shown in FIG. 14 , which shows that it has only one resonant frequency and is about 9.8 GHz;
  • the obtained S-parameter simulation map is as shown in FIG. 15, which is known from the figure.
  • the above resonator forms a passband from 6.275 GHz to 6.324 GHz with a bandwidth of about 50 MHz.
  • the resonant frequency is also significantly lower than the previous 9.8 GHz. Therefore, with the resonator of the present invention incorporating the first supermaterial plate, a bandwidth which can be formed by combining at least two resonators can be formed, and the resonance frequency can also be lowered.
  • the cavity in this embodiment can realize the bandwidth by relying on a single cavity, and can effectively reduce the number of resonators in the filter under the same bandwidth, thereby effectively reducing the volume of the filter.
  • FIG. 16 is a filter according to a fourth embodiment of the present invention.
  • the filter of this embodiment mainly refers to a microwave filter.
  • the inside is at least one resonant cavity 208 of the first embodiment.
  • the resonant cavity 208 can also adopt the resonant cavity of the second or third embodiment.
  • the resonant cavity 208 is provided with an input end and an output end on both sides.
  • a total of 14 sheets of metamaterial sheets 201 are bonded to each other, and the input end and the output end are respectively abutted on both side surfaces of the metamaterial sheet layer 201.
  • the input and output terminals may also not be in contact with the metamaterial sheet.
  • the metamaterial sheet 201 can increase the bandwidth of the resonant cavity, thereby reducing the number of filter resonators, thereby achieving miniaturization of the filter.
  • the resonator shown in Figure 16 is a 20mm 20mm 20mm cube
  • the metamaterial sheet is 7mm X 5.6mm X 1.018mm
  • a total of 6 metamaterial sheets
  • the substrate is FR-4 epoxy
  • the thickness is 1mm.
  • Each of the artificial microstructures has a cross-shaped derivative shape as shown in Fig. 2, and has a size of 1.4 mm X 1.4 mm
  • each of the substrates is arranged in an array of 20 human microstructures. It can be seen from the simulation that the first and second resonant frequencies are all 0, and the third and fourth resonant frequencies are 3.810 GHz and 3.861 GHz, respectively, which constitute a bandwidth exceeding at least 50 MHz.
  • the first resonant frequency is 6.100 GHz
  • the second resonant frequency is 8.360 GHz
  • the third resonant frequency is 9.938 GHz
  • the fourth resonant frequency is 9.938 GHz.
  • the second resonant frequency differs by more than 2 GHz and cannot form a wide frequency band.
  • the first and second resonant frequencies are 0, indicating that the low-order modes are suppressed, the higher-order modes are excited, and the higher-order modes are excited.
  • the higher the Q value the higher the Q value means that the loss of the cavity is small. This is also one of the advantages of the present invention.
  • the filter of the present invention when added to the metamaterial layer 201, can pull in multiple resonant frequencies, resulting in a wide bandwidth of a single resonant cavity, and thus can withstand a high power filter, that is, a single
  • the cavity high power filter can therefore achieve miniaturization of the filter, while also having the advantage of suppressing the loss of the low order mode.

Abstract

L'invention porte sur une cavité résonante, ayant l'intérieur qui est une cavité. Au moins une lamelle de métamatériau est placée dans la cavité. Chaque lamelle de métamatériau comprend un substrat fait d'une matière non-métallique et une microstructure artificielle adhérant à une surface du substrat. La microstructure artificielle est une structure qui est formée d'un fil fait d'une matière électroconductrice et qui a un motif géométrique. Lorsque la cavité résonne, et après que la lamelle de métamatériau est ajoutée dans celle-ci, la fréquence de résonance de la cavité résonante peut être diminuée de façon évidente, miniaturisant ainsi la cavité résonante. L'invention porte également sur un filtre ayant la cavité résonante.
PCT/CN2011/083811 2011-07-29 2011-12-12 Cavité résonante et filtre ayant la cavité résonante WO2013016920A1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
CN201110216460.4A CN103187609B (zh) 2011-07-29 2011-07-29 一种谐振腔
CN201110216572.X 2011-07-29
CN201110216572.XA CN103187604B (zh) 2011-07-29 一种滤波器
CN201110216460.4 2011-07-29
CN201110233307.2A CN102945997B (zh) 2011-08-16 2011-08-16 一种谐振腔
CN201110233307.2 2011-08-16

Publications (1)

Publication Number Publication Date
WO2013016920A1 true WO2013016920A1 (fr) 2013-02-07

Family

ID=47628633

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2011/083811 WO2013016920A1 (fr) 2011-07-29 2011-12-12 Cavité résonante et filtre ayant la cavité résonante

Country Status (1)

Country Link
WO (1) WO2013016920A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001084665A1 (fr) * 2000-04-28 2001-11-08 Motorola, Inc. Procede et dispositif de filtrage
CN1890810A (zh) * 2003-12-04 2007-01-03 秦内蒂克有限公司 具有空腔谐振截止元件的电子电路封装
US7417518B2 (en) * 2004-10-11 2008-08-26 Indian Institute Of Technology Dielectric resonator
CN101276952A (zh) * 2008-04-15 2008-10-01 华南理工大学 可控电磁混合耦合同轴腔滤波器
CN101286584A (zh) * 2007-11-12 2008-10-15 杭州电子科技大学 具有双边带陡降特性的新型频率选择表面
CN101465458A (zh) * 2009-01-05 2009-06-24 东南大学 一种小型化高性能微带双模带通滤波器
CN201421872Y (zh) * 2009-04-23 2010-03-10 鸿富锦精密工业（深圳）有限公司 一种空腔滤波器
JP2010278152A (ja) * 2009-05-27 2010-12-09 Mitsubishi Electric Corp 多層高周波パッケージ基板

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001084665A1 (fr) * 2000-04-28 2001-11-08 Motorola, Inc. Procede et dispositif de filtrage
CN1890810A (zh) * 2003-12-04 2007-01-03 秦内蒂克有限公司 具有空腔谐振截止元件的电子电路封装
US7417518B2 (en) * 2004-10-11 2008-08-26 Indian Institute Of Technology Dielectric resonator
CN101286584A (zh) * 2007-11-12 2008-10-15 杭州电子科技大学 具有双边带陡降特性的新型频率选择表面
CN101276952A (zh) * 2008-04-15 2008-10-01 华南理工大学 可控电磁混合耦合同轴腔滤波器
CN101465458A (zh) * 2009-01-05 2009-06-24 东南大学 一种小型化高性能微带双模带通滤波器
CN201421872Y (zh) * 2009-04-23 2010-03-10 鸿富锦精密工业（深圳）有限公司 一种空腔滤波器
JP2010278152A (ja) * 2009-05-27 2010-12-09 Mitsubishi Electric Corp 多層高周波パッケージ基板

Similar Documents

Publication Publication Date Title
CN107946762B (zh) 基于c型夹层雷达罩壁结构的x波段小型化高透波fss
CN110797613B (zh) 一种十阶六陷波的介质波导滤波器
CN109462000B (zh) 一种多层基片集成波导三阶滤波功分器
CN106025464B (zh) 一种基片集成波导式腔体滤波器
CN111883914A (zh) 基于siw馈电的具有滤波特性的介质谐振器宽带天线
US20150280681A1 (en) Resonator and filter having the same
SG186467A1 (en) Coupling mechanism for a pcb mounted microwave re-entrant resonant cavity
CN102610924A (zh) 一种人工电磁材料及使用该材料的滤波器
WO2021134997A1 (fr) Filtre et son procédé de fabrication
CN105406158A (zh) 一种基于金属贴片控制频率和耦合的双模介质滤波器
US10587029B2 (en) Multi-layer substrate with integrated resonator
WO2012139370A1 (fr) Microstructure artificielle et métamatériau à résonance magnétique pour lequel la microstructure artificielle est utilisée
CN103296359A (zh) 一种滤波器
CN110752425A (zh) 一种带通滤波器及通信装置
WO2013016920A1 (fr) Cavité résonante et filtre ayant la cavité résonante
WO2021170119A1 (fr) Filtre diélectrique et dispositif de communication
KR101216433B1 (ko) 메타매질을 이용한 고역 통과 필터
CN205335401U (zh) 一种基于金属贴片控制频率和耦合的双模介质滤波器
CN103296371A (zh) 一种谐振腔
WO2013016922A1 (fr) Cavité résonante et filtre ayant la cavité résonante
WO2013023423A1 (fr) Cavité résonante et filtre d'ondes à cavité résonante
WO2013023424A1 (fr) Cavité résonante et filtre d'ondes à cavité résonante
CN206282952U (zh) 高性能带阻滤波器及其通信腔体器件
WO2013037173A1 (fr) Cavité résonnante et filtre comportant celle-ci
WO2013016924A1 (fr) Cavité résonante et filtre ayant la cavité résonante

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11870337

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 11870337

Country of ref document: EP

Kind code of ref document: A1