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WO2013016924A1 - Cavité résonante et filtre ayant la cavité résonante - Google Patents

Cavité résonante et filtre ayant la cavité résonante Download PDF

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Publication number
WO2013016924A1
WO2013016924A1 PCT/CN2011/084005 CN2011084005W WO2013016924A1 WO 2013016924 A1 WO2013016924 A1 WO 2013016924A1 CN 2011084005 W CN2011084005 W CN 2011084005W WO 2013016924 A1 WO2013016924 A1 WO 2013016924A1
Authority
WO
WIPO (PCT)
Prior art keywords
resonant cavity
cavity according
branches
artificial microstructure
cavity
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/CN2011/084005
Other languages
English (en)
Chinese (zh)
Inventor
刘若鹏
栾琳
刘京京
刘豫青
李平军
任春阳
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.)
Kuang-Chi Institute of Advanced Technology
Kuang Chi Innovative Technology Ltd
Original Assignee
Kuang-Chi Institute of Advanced Technology
Kuang Chi Innovative Technology 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 Kuang-Chi Institute of Advanced Technology, Kuang Chi Innovative Technology Ltd filed Critical Kuang-Chi Institute of Advanced Technology
Publication of WO2013016924A1 publication Critical patent/WO2013016924A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/35—Non-linear optics
    • 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
    • H01P1/2082—Cascaded cavities; Cascaded resonators inside a hollow waveguide structure with multimode resonators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P7/00—Resonators of the waveguide type
    • H01P7/06—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
    • H01P7/08—Strip line resonators
    • H01P7/082—Microstripline resonators
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/35—Non-linear optics
    • G02F1/353—Frequency conversion, i.e. wherein a light beam is generated with frequency components different from those of the incident light beams
    • G02F1/3542—Multipass arrangements, i.e. arrangements to make light pass multiple times through the same element, e.g. using an enhancement cavity
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2202/00—Materials and properties
    • G02F2202/30—Metamaterials

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 resonant cavity is a resonant component that operates at a microwave frequency and includes an arbitrary shape of a cavity surrounded by a conductive wall (or a magnetically conductive wall) and capable of forming an electromagnetically oscillating dielectric region therein, which has a storage electromagnetic energy and a certain selection The characteristics of the frequency signal.
  • S11 is the input reflection parameter, that is, the input return loss, and the smaller the value, the better
  • S21 is the forward transmission parameter, that is, the gain, and the closer the value is to OdB, the better.
  • the resonant frequency of the microwave cavity depends on the volume of the cavity. Generally, the larger the cavity volume is, the lower the resonance frequency is. The cavity volume is reduced. The higher the resonance frequency is, so how to achieve the case without increasing the cavity size. Reducing the resonant frequency 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 is to provide a resonant cavity which can reduce the resonant frequency without increasing the size of the cavity and which has better performance.
  • the present invention provides a resonant cavity including a cavity and a resonator disposed within the cavity.
  • the resonator includes at least one cuboid metamaterial, each of the metamaterials including at least one sheet of material, each sheet of material comprising a substrate and an artificial microstructure attached to the substrate, the blocks of metamaterials
  • the layers are sequentially stacked in the height direction of the metamaterial, and the length directions of the adjacent two metamaterials are perpendicular to each other.
  • each of the block metamaterials is sequentially stacked in a vertical direction.
  • a cavity is disposed in the cavity, and the resonator is fixed on the support, and the support is made of a microwave wave transmitting material.
  • the support is made of foam.
  • the support is a cylindrical structure. The liquid substrate material is filled and cured, and the two are fused together to form a whole.
  • adjacent substrates are fused together by mechanical or by filling a liquid substrate material between two adjacent substrates to form a whole.
  • the artificial microstructure comprises four branches, and any of the branches overlaps the other three branches respectively by rotating 90 degrees, 180 degrees and 270 degrees clockwise with a point as a center of rotation.
  • one end of any one of the branches of the artificial microstructure is an intersection of the four branches, and the other end is a free end connected with a line segment.
  • any of the branches of the artificial microstructure is connected to the midpoint of the line segment.
  • the branch road comprises at least one bent portion.
  • the bent portion of the artificial microstructure is a right angle, a rounded corner or a sharp corner.
  • each of the branches includes a T-shape and at least one line segment that intersects the T-shaped intermediate connection line and is divided by the T-shaped intermediate connection line.
  • the substrate is a ceramic material.
  • the substrate is made of polytetrafluoroethylene, ferroelectric material, ferrite material, ferromagnetic material, SiO 2 or FR-4.
  • the artificial microstructure is made of metal wire.
  • the artificial microstructure is made of copper wire.
  • the artificial microstructure is made of silver wire.
  • the metal wire used in the artificial microstructure has a cross section of a cylindrical shape or a flat shape.
  • embodiments of the present invention also provide a filter including at least one of the above-described resonant cavities.
  • the technical solution of the present invention has the following beneficial effects: According to the technical solution of the present invention, by changing the position of the adjacent metamaterials in the resonant cavity, the resonant frequency of the resonant cavity can be lowered to improve the performance of the resonant cavity, which is beneficial to achieve resonance. The miniaturization of the cavity. BRIEF DESCRIPTION OF THE DRAWINGS The drawings, which are required to be used in the description of the drawings or in the description of the prior art, are described in detail in the drawings. The drawings in the drawings are only some embodiments of the present invention, and those skilled in the art can obtain other drawings according to the drawings without any inventive labor.
  • FIG. 1 is a schematic structural view of a resonant cavity in the first embodiment
  • FIG. 2 is a schematic view showing the arrangement of artificial microstructures on a material layer in the metamaterial 2 of FIG. 1;
  • FIG. 3 is a plan view of three metamaterials in FIG.
  • Figure 4 is a characteristic diagram of the S11 parameter of the resonant cavity of Figure 1;
  • Figure 5 is a characteristic diagram of the S21 parameter of the resonant cavity of Figure 1;
  • FIG. 6 is a schematic structural view of three metamaterials in the resonant cavity of FIG. 1 when the horizontal direction is not rotated;
  • FIG. 7 is a characteristic curve of the S11 parameter of the resonant cavity of FIG.
  • Figure 8 is a characteristic diagram of the S21 parameter of the resonant cavity of Figure 6;
  • FIG. 9 is a schematic structural view of a resonant cavity in the second embodiment.
  • Figures 10 through 17 are schematic views of possible structures of an artificial microstructure. Specific embodiment
  • the invention relates to a resonant cavity for a filter, the filter comprising at least one of the resonant cavities.
  • the resonant cavity comprises a cavity 1, three cuboidal metamaterials 2, 3 and 4 disposed in the cavity 1, the metamaterial 2 comprises 8 material sheets, and the metamaterial 3 comprises 2
  • the material layer, the metamaterial 4 comprises two material sheets, each material layer comprises a substrate and an artificial microstructure attached to the substrate, the substrate is made of a ceramic material, and the thickness of the ceramic material is 1 mm, of course, the polymer can also be selected.
  • the artificial microstructure is a structure having a certain geometric shape composed of a wire, wherein the wire is made of copper wire, and the cross section of the selected copper wire is rectangular, and the cross-sectional dimension is 0.1 mm X 0.018 mm, wherein the line width of the copper wire is 0.1 mm, the thickness of the copper wire is 0.018 mm.
  • the metal wire may also use other metal wires such as a silver wire.
  • the cross section of the metal wire may also be cylindrical, flat or other shapes, and the size may be other sizes.
  • the structure of the artificial microstructure is two I-shapes orthogonal to each other, and the intersection point is located at the midpoint of the two I-shapes.
  • the cavity 1 shown in Fig. 1 is a cube of 30 mm X 30 mm X 30 mm
  • the size of the metamaterial 2 is 12 mm X 18 mm X 8.144 mm
  • the size of the metamaterial 3 is 12 mm ⁇ 18 mm ⁇ 2.036 mm
  • the size of the metamaterial 4 is 12 mm X 18 mm X 2.036 mm.
  • the metamaterials 2, 3, and 4 are sequentially stacked in the height direction of the metamaterial, and the length directions of the adjacent two metamaterials are perpendicular to each other.
  • the adjacent metamaterials are vertically stacked 90 degrees and then vertically stacked together, and the adjacent material sheets and the different metamaterials are mechanically connected or filled between adjacent substrates, for example, a substance that can connect the two.
  • a liquid substrate material which, after curing, bonds adjacent two substrates to form a plurality of material sheets and different metamaterials as a whole; as shown in FIG. 2, each substrate is virtually divided into 24 units.
  • Each unit is 3 mm x 3 mm, and each person has a micro-structure attached to it; the top view of the three meta-materials in Figure 1 is shown in Figure 3, and the adjacent meta-materials are rotated 90 degrees in the horizontal direction, artificial micro
  • the structure includes four T-shaped branches with co-intersection points. Each branch is rotated clockwise by 90 degrees, 180 degrees and 270 degrees with the intersection point as the center of rotation, and then coincides with the other three branches.
  • the resonant frequency of the corresponding cavity is 10.63 GHz; when the metamaterial shown in Fig. 1 is placed in the cavity 1, the resonant frequency of the cavity is 2.94 GHz.
  • the parameter S11 corresponding to the cavity at the resonance point is -38.079 dB, and S21 is -0.5929 dB.
  • the resonant frequency of the corresponding cavity is 3.029 GHz, as shown in FIG. 7 and FIG. 8, at the resonance point.
  • the parameter S11 corresponding to the cavity is -17.986 dB, and S21 is -1.05 dB.
  • S11 is the input reflection parameter, that is, the input return loss, the smaller the value, the better;
  • S21 is the forward transmission parameter, and the closer the value is to the OdB, the better. It can be seen from the experimental results that by changing the relative placement position of adjacent metamaterials in the cavity, the resonance frequency of the cavity can be lowered to improve the performance of the cavity, which is advantageous for miniaturization of the cavity.
  • the present embodiment is different from the first embodiment in that, as shown in FIG. 9, a cavity 5 is disposed in the cavity 1 under the metamaterial 2 for supporting three metamaterials located thereon, and the support 5 is foamed.
  • the cylindrical structure can be made, and the support 5 can also be other structures.
  • the support can also be made of other microwave-transparent materials, and the microwave-transparent material refers to the wavelength of l ⁇
  • a material having a transmittance of 1000 mm and an electromagnetic wave having a frequency in the range of 0.3 to 300 GHz of more than 70% may be an inorganic material, a polymer material, an inorganic/polymer composite material, or a diamond material.
  • the shape of the artificial microstructure may also be as shown in Figs. 10 and 11, the artificial micro
  • the structure includes four branches of the co-intersection point, each branch including a T-shape and at least one line segment intersecting the T-shaped intermediate connection line and being bisected by the T-shaped intermediate connection line, the line segment
  • the lengths can be the same or different.
  • each of the artificial microstructures comprising four branches of a common intersection, each of which is rotated clockwise by 90 degrees, 180 degrees and 270 degrees with the intersection as the center of rotation. Respectively coincide with the other three branches, each branch includes at least one bent portion, each bent portion may be a right angle, a rounded corner or a sharp corner, and one end of each branch is the intersection of four branches, and the other One end is a free end, and the free end can be suspended or connected to a midpoint of the line segment.
  • the four branches of the artificial microstructure may also not co-intersection, and respectively rotate 90 degrees, 180 degrees, and 270 degrees clockwise with respect to a point in the space to coincide with the other three branches.
  • the structures in Figs. 10 to 17 are all drawn with thin lines, and in fact, the above structures all have a certain width. These are all within the protection of the present invention.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Road Signs Or Road Markings (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

L'invention porte sur une cavité résonante et un filtre ayant la cavité résonante, comprenant une cavité (1) et un oscillateur harmonique disposé dans la cavité. L'oscillateur harmonique comprend au moins une matière cuboïde rectangulaire (2, 3, 4). Chaque pièce de métamatériau comprend au moins une lamelle de matière. Chaque lamelle de matière comprend un substrat et une microstructure artificielle adhérant au substrat. Chaque pièce de métamatériau est empilée le long de la direction de la hauteur du métamatériau, et les directions de la hauteur de quelconques deux pièces adjacentes de métamatériau sont perpendiculaires l'une par rapport à l'autre. Par changement des positions des matières adjacentes dans la cavité résonante, la fréquence de résonance de la cavité résonante peut être diminuée, et la performance de la cavité résonante peut être améliorée, facilitant ainsi la miniaturisation de la cavité résonante.
PCT/CN2011/084005 2011-07-29 2011-12-14 Cavité résonante et filtre ayant la cavité résonante Ceased WO2013016924A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201110216427.1 2011-07-29
CN201110216427.1A CN102903995B (zh) 2011-07-29 2011-07-29 一种谐振腔

Publications (1)

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WO2013016924A1 true WO2013016924A1 (fr) 2013-02-07

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CN (1) CN102903995B (fr)
WO (1) WO2013016924A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9906198B2 (en) 2015-03-20 2018-02-27 Nokia Technologies Oy Narrowing audio filter transition band
CN107910651A (zh) * 2017-11-07 2018-04-13 齐齐哈尔大学 极化和入射角度不敏感的低损耗电磁感应透明全介质超材料结构

Citations (4)

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US5484764A (en) * 1992-11-13 1996-01-16 Space Systems/Loral, Inc. Plural-mode stacked resonator filter including superconductive material resonators
CN101150218A (zh) * 2007-11-02 2008-03-26 清华大学 基于铁电陶瓷颗粒的温度可调谐负磁导率器件及制备方法
US20080212921A1 (en) * 2007-03-02 2008-09-04 Georgia Tech Research Corporation Optical interconnect devices and structures based on metamaterials
CN101494310A (zh) * 2008-11-27 2009-07-29 电子科技大学 一种可调谐微波负折射率材料

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CN100541906C (zh) * 2007-02-09 2009-09-16 哈尔滨工业大学 超小型谐振腔
US8134774B2 (en) * 2009-04-16 2012-03-13 Shih-Yuan Wang Dynamically reconfigurable negative index material crossbars with gain
CN102064374A (zh) * 2010-12-17 2011-05-18 哈尔滨工程大学 基于异向介质的分裂式谐振器
CN202150531U (zh) * 2011-07-29 2012-02-22 深圳光启高等理工研究院 一种谐振腔

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US5484764A (en) * 1992-11-13 1996-01-16 Space Systems/Loral, Inc. Plural-mode stacked resonator filter including superconductive material resonators
US20080212921A1 (en) * 2007-03-02 2008-09-04 Georgia Tech Research Corporation Optical interconnect devices and structures based on metamaterials
CN101150218A (zh) * 2007-11-02 2008-03-26 清华大学 基于铁电陶瓷颗粒的温度可调谐负磁导率器件及制备方法
CN101494310A (zh) * 2008-11-27 2009-07-29 电子科技大学 一种可调谐微波负折射率材料

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9906198B2 (en) 2015-03-20 2018-02-27 Nokia Technologies Oy Narrowing audio filter transition band
US10056876B2 (en) 2015-03-20 2018-08-21 Nokia Technologies Oy Narrowing audio filter transition band
CN107910651A (zh) * 2017-11-07 2018-04-13 齐齐哈尔大学 极化和入射角度不敏感的低损耗电磁感应透明全介质超材料结构

Also Published As

Publication number Publication date
CN102903995B (zh) 2015-04-22
CN102903995A (zh) 2013-01-30

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