[go: up one dir, main page]

WO2013016925A1 - Cavité résonante et filtre ayant la cavité résonante - Google Patents

Cavité résonante et filtre ayant la cavité résonante Download PDF

Info

Publication number
WO2013016925A1
WO2013016925A1 PCT/CN2011/084008 CN2011084008W WO2013016925A1 WO 2013016925 A1 WO2013016925 A1 WO 2013016925A1 CN 2011084008 W CN2011084008 W CN 2011084008W WO 2013016925 A1 WO2013016925 A1 WO 2013016925A1
Authority
WO
WIPO (PCT)
Prior art keywords
resonant cavity
entire entire
branches
shaped structure
degrees
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/CN2011/084008
Other languages
English (en)
Chinese (zh)
Inventor
刘若鹏
栾琳
刘京京
苏翠
李平军
钟果
许宁
付少丽
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
Priority claimed from CN2011102164360A external-priority patent/CN102903996A/zh
Priority claimed from CN201110216440.7A external-priority patent/CN103187608B/zh
Priority claimed from CN201110216478.4A external-priority patent/CN103035996B/zh
Priority claimed from CN201110216461.9A external-priority patent/CN102903997B/zh
Application filed by Kuang-Chi Institute of Advanced Technology, Kuang Chi Innovative Technology Ltd filed Critical Kuang-Chi Institute of Advanced Technology
Publication of WO2013016925A1 publication Critical patent/WO2013016925A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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 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.
  • 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 resonator and a filter which can reduce the resonance frequency without increasing the size of the cavity.
  • the present invention provides a resonant cavity including a cavity and a resonator disposed within the cavity.
  • the resonator is a metamaterial comprising at least one sheet of material, each sheet of material comprising a substrate and at least one artificial microstructure attached to the substrate, the artificial microstructure comprising four branches, Any of the branches is rotated clockwise by 90 degrees, 180 degrees, and 270 degrees with a point as a center of rotation, and then coincides with the other three branches.
  • the four branches are all intersected at one intersection, and any branch of the four branches is at the intersection
  • the rotation center is rotated clockwise by 90 degrees, 180 degrees, and 270 degrees, respectively, and then coincides with the other three branches.
  • 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.
  • one end of any one of the branches of the artificial microstructure that is away from the center of rotation is connected with a line segment.
  • one end of any one of the branches of the artificial microstructure connected to the line segment is connected to a midpoint of the line segment.
  • the midpoint of the structure is connected to a midpoint of the line segment.
  • the artificial microstructure further comprises at least one line segment connected to the intermediate connecting line of the I-shaped structure, and the line segment is axisymmetric with the intermediate connecting line of the I-shaped structure, and the intermediate connection of the I-shaped structure The intersection of the line and the line segment is the midpoint of the line segment.
  • each of the line segments connected to the intermediate connecting line of the I-shaped structure is a straight line segment, and each of the line segments is perpendicular to an intermediate connecting line of the I-shaped structure.
  • each of the line segments connected to the intermediate connecting line of the I-shaped structure is an arc segment.
  • each of the line segments connected to the intermediate connecting line of the I-shaped structure is a bent line segment.
  • the line segments connected to the intermediate connecting line of the I-shaped structure appear in pairs, and are symmetric with respect to a midpoint of the I-shaped structure.
  • each of the line segments connected to the intermediate connecting line of the I-shaped structure is of equal length.
  • the length of each of the line segments connected to the intermediate connecting line of the I-shaped structure gradually decreases from the midpoint of the I-shaped structure to both sides of the I-shaped structure.
  • the artificial microstructure further comprises four I-shaped structures that are rotationally symmetric with respect to one point or a derivative structure of the I-shaped structure.
  • any of the branches and any of the I-shaped structures or the I-shaped structures are rotated clockwise by 90 degrees, 180 degrees, and 270 degrees with a point as a center of rotation, respectively, and the other three branches and others
  • the three I-shaped structures or the derivative structures of the I-shaped structures coincide.
  • the intermediate connecting lines of the I-shaped structure which is rotationally symmetric with respect to one point are respectively on the same straight line as the both ends of the four branches.
  • an embodiment of the present invention further provides a filter, the filter comprising at least one of the above-mentioned resonant cavities.
  • the technical solution of the present invention has the following beneficial effects.
  • the frequency of the resonant cavity can be reduced by providing a metamaterial in the resonant cavity: improving the quality factor Q of the resonant cavity, which is beneficial to improving the performance and implementation of the resonant cavity.
  • the miniaturization of the resonant cavity BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is a schematic view of a resonant cavity of a first embodiment of the present invention
  • FIG. 2 is a schematic view of a resonant cavity according to a second embodiment of the present invention.
  • 3 to 7 are schematic views of possible structures of an artificial microstructure
  • Figure 8 is a schematic view of a resonant cavity in accordance with a third embodiment of the present invention.
  • Figure 9 is a schematic view of the dual substrate unit of Figure 8 and the artificial microstructure sandwiched between the two substrate units;
  • Figure 10 is a schematic view of the artificial microstructure of Figure 9;
  • Figure 11 is a schematic structural view of a resonant cavity in the fourth embodiment
  • Figure 16 is a schematic structural view of a resonant cavity in the fifth embodiment
  • Figure 17 is a schematic view of the dual substrate unit of Figure 16 and the artificial microstructure sandwiched between the two substrate units;
  • Figure 18 is a schematic view of the artificial microstructure of Figure 16;
  • Figure 19 is a schematic view showing a double substrate unit in a resonant cavity in Embodiment 6 and an artificial microstructure sandwiched between the two substrate units;
  • Figure 20 is a schematic view of the artificial microstructure of Figure 19;
  • 21 to 29 are schematic views showing possible structures of an artificial microstructure
  • Figure 30 is a schematic structural view of a resonant cavity in the seventh embodiment
  • Figure 31 is a schematic view showing the arrangement of metal microstructures on a sheet of material in Figure 30;
  • Figure 32 is a schematic view showing the arrangement of the metal microstructures on the material sheets when they are not connected to each other; 33 to 34 are schematic diagrams showing possible structures of an artificial microstructure.
  • the resonant cavity comprises a cavity 1, a support 2 and a metamaterial 3 fixed on a support 2, the metamaterial 3 comprising two layers of material, each of the material layers comprising a substrate and an attachment Artificial microstructure 4 on the substrate.
  • the artificial microstructure can be attached to the substrate by etching, electroplating, drilling, photolithography, electron engraving or ion etching; the adjacent material layers are formed by a certain packaging process such as soldering, riveting, bonding, etc.
  • a substance, such as a liquid substrate material, which is connected to the whole or by filling, is bonded to the adjacent two sheets of material after curing, so that the plurality of material sheets are integrated.
  • the substrate is made of ceramic material.
  • the thickness of the ceramic material is 1 mm.
  • it can also be made of PTFE, ferroelectric material, ferrite material, ferromagnetic material or FR-4.
  • the support 2 is in the shape of a rectangular parallelepiped made of foam, and the support 3 can also be other structures, as long as the super material 3 can be fixed, the support can also be made of other microwave-transparent materials, and the microwave-transparent material refers to
  • the material having a transmittance of electromagnetic waves having a wavelength of from 1 to 1000 mm and a frequency of from 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 artificial microstructure is a structure having a certain geometric shape composed of a wire, wherein the wire uses a copper wire, and the selected copper wire has a rectangular cross section, and the cross-sectional dimension is 0.1 mm ⁇ ⁇ .018 mm, wherein the wire width of the copper wire The thickness of the copper wire is 0.018 mm.
  • the metal wire can also use other metal wires such as silver wire.
  • the cross section of the metal wire can also be cylindrical, flat or other shapes, and the specifications can also be other sizes.
  • the structure of the artificial microstructure is two I-shaped structures orthogonal to each other, and the intersection point is the midpoint of the I-shaped structure.
  • the cavity 1 shown in Fig. 1 is a cube of 20 mm x 20 mm x 20 mm, and the size of the metamaterial 3 is 10 mm x 10 mm X 2.036 mm.
  • the resonance frequency of the cavity is 3.898 GHz by simulation.
  • the metal copper of the same size as the metamaterial 3 is placed in the cavity 1, the resonant frequency of the resonant cavity is 7.621 GHz. From the simulation results, it is known that the resonance frequency of the resonant cavity is lowered after the placement of the metamaterial 3, so The placement of the metamaterial 3 in the cavity 1 facilitates miniaturization of the resonant cavity.
  • a second embodiment of the present invention provides a difference between a resonant cavity and a first embodiment in that the shape of the artificial microstructure is different.
  • the artificial microstructure includes four branches of a common intersection, and each branch includes a plurality of bends. Folded portion, each bent portion is bent at a right angle, and any branch is rotated clockwise by 90 degrees, 180 degrees, and 270 degrees with the intersection point as the center of rotation, respectively, and coincides with the other three branches, each of which is far away One of the center of rotation
  • the ends are respectively connected to a line segment and connected to the midpoint of the line segment.
  • the resonant frequency of the resonant cavity is further reduced by increasing the length of the bent portion, that is, increasing the length of the metal line. Therefore, improving the shape of the artificial microstructure (such as adding a bent portion) facilitates miniaturization of the resonant cavity.
  • the four branches of the artificial microstructure may not intersect, and the artificial microstructure may be as shown in FIG. 3 to FIG. 7 , the bent portion may be rounded or pointed, and the free end may be connected to the line segment or not connected to the line segment;
  • the structures in FIGS. 3 to 7 are all drawn with thin lines. In fact, the above structures all have a certain width; a substrate is not limited to only one artificial microstructure, and a plurality of artificial micro-structures can be attached. structure.
  • a third embodiment of the present invention provides a resonant cavity that is substantially the same as the resonant cavity substrate of the first embodiment, and includes a cavity 301, a support 302, and a metamaterial 303 fixed on the support 302.
  • Material 303 includes four layers of material, each of which includes two substrates and an artificial microstructure sandwiched between the two substrates. The opposite two substrates are virtually divided into 12 substrate unit pairs, and each substrate unit pair is shown in Fig. 9, and an artificial microstructure as shown in Fig. 10 is sandwiched between the two substrate units included therein.
  • the four branches of the artificial microstructure are constructed by two I-shaped structures orthogonal to each other.
  • the artificial microstructure further includes eight line segments intersecting the intermediate connecting lines of the two I-shaped structures, and the intermediate connecting line of the I-shaped structure intersects perpendicularly with the eight line segments, and the intersection point is the midpoint of the line segment.
  • the length of each line segment, such as the artificial microstructure may also be as shown in Figures 12 and 15; for the sake of tube formation, the structures in Figures 12 and 15 are all drawn with thin lines. In fact, the above structures all have a certain width. ,
  • the cavity 301 shown in Fig. 8 is a 20 mm x 20 mm x 20 mm cube, and the size of the metamaterial 303 is 12 mm x 16 mm X 8.072 mm.
  • the resonance frequency of the cavity is 2.278 GHz by simulation.
  • the cavity corresponds to a resonant frequency of 10.63 GHz.
  • the resonant frequency of the resonant cavity is 4.517 GHz. It can be seen from the simulation results that the resonance frequency of the cavity after the placement of the metamaterial 303 is significantly reduced, so that miniaturization of the cavity is facilitated by placing the metamaterial 303 in the cavity 301.
  • the fourth embodiment of the present invention provides a resonant cavity that is substantially the same as the resonant cavity substrate of the third embodiment, except that the metamaterial layer of the embodiment is a single-layer substrate, and each substrate is Virtually divided into 12 virtual units, each unit is attached with an artificial microstructure.
  • the size of the metamaterial 403 is 12 mm x 16 mm X 4.072 mm.
  • the resonance frequency of the cavity is simulated by simulation. 2.842GHz, when the metamaterial 403 and the support 302 are not placed in the cavity 401, and only the equal volume of the ceramic block is placed, the resonant frequency of the resonant cavity is 4.529 GHz. From the simulation results, the resonance of the resonant cavity after placing the metamaterial 403 is known. The frequency reduction is significant, so miniaturization of the resonant cavity is facilitated by placing the metamaterial 403 in the cavity 401.
  • a resonant cavity according to a fifth embodiment of the present invention is substantially the same as the resonant cavity substrate of the first embodiment.
  • the resonant cavity of the embodiment includes a cavity 501, a metamaterial 502, and a support 503, and the metamaterial 502 is fixed.
  • the metamaterial comprises six layers of material, each of the layers comprising a double substrate and two artificial microstructures sandwiched between the two substrates.
  • Each of the material sheets in this embodiment includes two material units, each of which includes a double substrate unit and an artificial microstructure sandwiched between the two substrate units as shown in Fig. 17; the artificial microstructure is as shown in Fig. 18.
  • the four branches of the artificial microstructure including the co-intersection point in the embodiment further comprise four I-shaped structures distributed around the four branches, and any of the branches and an I-shaped structure rotate clockwise with the intersection as a center of rotation. After 90 degrees, 180 degrees and 270 degrees, they coincide with the other three branches and the other three I-shaped structures.
  • Size of the cavity 501 shown in FIG. 16 is 20 mm x20 mm x20 mm metamaterial 502 mm size of 4 mm x8 X12.108 mm, by simulation of the apparent resonant frequency of the resonant cavity when the cavity 1.986GHz 0
  • the super material 502 is not placed in 501, and the cavity corresponding to the resonant frequency is 10.63 GHz; when placed in the cavity 501 in the same size as the metamaterial 502, the resonant frequency of the cavity is 4.526 GHz; It can be seen that the resonance frequency of the resonant cavity is significantly reduced after the placement of the metamaterial, so that miniaturization of the resonant cavity is facilitated by placing the metamaterial in the cavity 501.
  • a sixth embodiment of the present invention provides a resonant cavity that is substantially the same as the resonant cavity substrate of the fifth embodiment, except that the shape of the artificial microstructure is different.
  • each material unit includes a dual substrate unit. And an artificial microstructure sandwiched between the two substrate units, the artificial microstructure is as shown in FIG.
  • the resonant frequency of the resonant cavity is 1.884 GHz. From the simulation results, it is known that the resonant frequency of the resonant cavity is significantly reduced after the placement of the metamaterial. Therefore, miniaturization of the resonant cavity is facilitated by placing the metamaterial in the cavity.
  • the structure can be as shown in Figure 21 to Figure 25; the four branches can be I-shaped or I-shaped.
  • the substrate may be a double substrate or a single substrate.
  • a seventh embodiment of the present invention provides a resonant cavity substantially the same as the resonant cavity substrate of the first embodiment.
  • the resonant cavity includes a cavity 601, a support 602, and a metamaterial 603 fixed to the support 602.
  • Metamaterial 603 includes six layers of material, each of which includes a substrate and an artificial microstructure attached to the substrate.
  • each material layer is arranged with two rows and three columns of a total of six human microstructures, and the artificial microstructures include four branches of a common intersection, each branch including four bending portions, each The bent portions are bent at right angles, and any of the branches is rotated clockwise by 90 degrees, 180 degrees, and 270 degrees with the intersection point as the center of rotation, respectively, and coincides with the other three branches, and one end of each branch away from the center of rotation
  • Each line segment is connected and connected to the midpoint of the line segment.
  • Two adjacent microstructures in each row of each material layer are connected by metal lines aa, bb', cc dd.
  • the cavity 1 shown in Fig. 1 is a cube of 20 mm x 20 mm x 20 mm, and the size of the metamaterial is 9 mm x 6 mm X 6.108 mm.
  • the man-made structure may also be shown in Figures 3-7, 12-15, 33 and 34.
  • the four branches of the man-made structure may or may not intersect, and may of course be other geometric structures;
  • the substrate in the layer may be a single substrate or a double substrate as described in the embodiment.
  • the artificial microstructure is sandwiched between the two substrates; an artificial microstructure connected by wires, wherein the wire may be an embodiment
  • the additionally added wires described in the above may also be a part of the artificial microstructures themselves connected to each other.

Landscapes

  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

La présente invention porte sur une cavité résonante, comprenant une cavité et un oscillateur harmonique disposé dans la cavité. L'oscillateur harmonique est fait d'un métamatériau. Le métamatériau comprend au moins une lamelle de matière. Chaque lamelle de matière comprend un substrat et au moins une microstructure artificielle adhérant au substrat. La microstructure artificielle comprend quatre branches. Un point est le centre de rotation, et chacune des branches tourne de 90 degrés, 180 degrés et 270 degrés pour chevaucher les trois autres branches respectivement. Selon la présente invention, par disposition du métamatériau dans la cavité résonante, la fréquence de la cavité résonante peut être diminuée et la miniaturisation de la cavité résonante peut être facilitée. L'invention porte également sur un filtre ayant la cavité résonante.
PCT/CN2011/084008 2011-07-29 2011-12-14 Cavité résonante et filtre ayant la cavité résonante Ceased WO2013016925A1 (fr)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
CN2011102164360A CN102903996A (zh) 2011-07-29 2011-07-29 一种谐振腔
CN201110216440.7A CN103187608B (zh) 2011-07-29 2011-07-29 一种谐振腔
CN201110216478.4A CN103035996B (zh) 2011-07-29 2011-07-29 一种谐振腔
CN201110216461.9 2011-07-29
CN201110216436.0 2011-07-29
CN201110216478.4 2011-07-29
CN201110216440.7 2011-07-29
CN201110216461.9A CN102903997B (zh) 2011-07-29 2011-07-29 一种谐振腔

Publications (1)

Publication Number Publication Date
WO2013016925A1 true WO2013016925A1 (fr) 2013-02-07

Family

ID=47628635

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2011/084008 Ceased WO2013016925A1 (fr) 2011-07-29 2011-12-14 Cavité résonante et filtre ayant la cavité résonante

Country Status (1)

Country Link
WO (1) WO2013016925A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060017651A1 (en) * 2003-08-01 2006-01-26 The Penn State Research Foundation High-selectivity electromagnetic bandgap device and antenna system
CN1787280A (zh) * 2004-12-09 2006-06-14 上海方盛信息科技有限责任公司 一种电磁禁带结构材料
US20100264524A1 (en) * 2006-06-13 2010-10-21 Samsung Electronics Co., Ltd. Substrate for semiconductor package

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060017651A1 (en) * 2003-08-01 2006-01-26 The Penn State Research Foundation High-selectivity electromagnetic bandgap device and antenna system
CN1787280A (zh) * 2004-12-09 2006-06-14 上海方盛信息科技有限责任公司 一种电磁禁带结构材料
US20100264524A1 (en) * 2006-06-13 2010-10-21 Samsung Electronics Co., Ltd. Substrate for semiconductor package

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ZHANG, CHAOFA ET AL.: "Development of Stealth Technique Compounded Radar Absorbing Material and FSS", MATERIALS REVIEW, vol. 21, no. 1, January 2007 (2007-01-01), pages 118 - 121 *

Similar Documents

Publication Publication Date Title
CN202150533U (zh) 一种谐振腔
CN202150531U (zh) 一种谐振腔
CN202217774U (zh) 一种谐振腔
CN102480009B (zh) 一种具有高介电常数的超材料
CN202275917U (zh) 一种谐振腔
CN102544739B (zh) 一种具有高介电常数的超材料
WO2012139370A1 (fr) Microstructure artificielle et métamatériau à résonance magnétique pour lequel la microstructure artificielle est utilisée
WO2013016925A1 (fr) Cavité résonante et filtre ayant la cavité résonante
CN202275915U (zh) 一种谐振腔
CN102903997B (zh) 一种谐振腔
WO2013016924A1 (fr) Cavité résonante et filtre ayant la cavité résonante
CN102903999B (zh) 一种谐振腔
CN202275914U (zh) 一种谐振腔
CN103035996B (zh) 一种谐振腔
CN103000980B (zh) 一种谐振腔
CN103199346B (zh) 一种具有高介电常数的超材料
CN103187609B (zh) 一种谐振腔
CN202423529U (zh) 一种谐振腔
WO2013023424A1 (fr) Cavité résonante et filtre d'ondes à cavité résonante
WO2012122814A1 (fr) Métamatériau électromagnétique transparent
CN202217777U (zh) 一种谐振腔
CN103187608B (zh) 一种谐振腔
WO2013023423A1 (fr) Cavité résonante et filtre d'ondes à cavité résonante
WO2013000224A1 (fr) Microstructure artificielle et matériau électromagnétique artificiel l'appliquant
CN102810758B (zh) 一种新型超材料

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: 11870421

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: 11870421

Country of ref document: EP

Kind code of ref document: A1