WO2013016925A1 - Resonant cavity and filter having the resonant cavity - Google Patents

Resonant cavity and filter having the resonant cavity Download PDF

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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
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WIPO (PCT)
Prior art keywords
resonant cavity
entire entire
branches
shaped structure
degrees
Prior art date
Application number
PCT/CN2011/084008
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French (fr)
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
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.)
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Priority claimed from CN201110216440.7A external-priority patent/CN103187608B/en
Priority claimed from CN201110216461.9A external-priority patent/CN102903997B/en
Priority claimed from CN2011102164360A external-priority patent/CN102903996A/en
Priority claimed from CN201110216478.4A external-priority patent/CN103035996B/en
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 WO2013016925A1 publication Critical patent/WO2013016925A1/en

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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.

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Abstract

The present invention provides a resonant cavity, comprising a cavity and harmonic oscillator disposed in the cavity. The harmonic oscillator is made of a metamaterial. The metamaterial comprises at least one material lamella. Each material lamella comprises a substrate and at least one man-made microstructure adhering to the substrate. The man-made microstructure comprises four branches. With a point being the center of rotation, each of the branches rotates by 90 degrees, 180 degrees, and 270 degrees to overlap the other three branches respectively. According to the technical solution of the present invention, by disposing the metamaterial in the resonant cavity, the frequency of the resonant cavity can be decreased, and miniaturization of the resonant cavity can be facilitated. Also provided is a filter having the resonant cavity.

Description

一种谐振腔及具有该谐振腔的滤波器  Resonant cavity and filter having the same
本申请要求于 2011年 7月 29日提交中国专利局、申请号为 201110216478.4, 发明名称为 "一种谐振腔" 的中国专利申请的优先权， 2011年 7月 29日提交中 国专利局、 申请号为 201110216440.7, 发明名称为 "一种谐振腔" 的中国专利 申请的优先权， 2011年 7月 29日提交中国专利局、 申请号为 201110216461.9, 发明名称为 "一种谐振腔" 的中国专利申请的优先权， 2011年 7月 29日提交中 国专利局、 申请号为 201110216436.0, 发明名称为 "一种谐振腔" 的中国专利 申请的优先权， 其全部内容通过引用结合在本申请中。 技术领域  This application claims the priority of the Chinese Patent Application entitled "A Resonant Cavity" submitted to the China Patent Office on July 29, 2011, and the application number is 201110216478.4. The Chinese Patent Office submitted the application number on July 29, 2011. The priority of the Chinese patent application entitled "A Resonant Cavity", issued on July 29, 2011, filed on Jan. 29, 2011, filed No. 2011. Priority is hereby incorporated by reference in its entirety in its entirety in its entirety in its entirety in the entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire all all all all all all Technical field
本发明涉及无线通信领域， 更具体地说， 涉及一种谐振腔及具有该谐振腔 的滤波器。 背景技术  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
谐振腔是在微波频率下工作的谐振元件， 它包括一个任意形状的由导电壁 (或导磁壁） 包围的腔体， 并能在其中形成电磁振荡的介质区域， 它具有储存 电磁能及选择一定频率信号的特性。 微波谐振腔的谐振频率取决于该腔的容积， 一般来说， 谐振腔容积越大谐振频率越低， 谐振腔容积减小谐振频率越高， 因 此如何实现在不增大谐振腔尺寸的情况下降低谐振腔的谐振频率对于谐振腔的 小型化具有重要的意义。 发明内容  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
本发明要解决的技术问题提供一种在不增大谐振腔尺寸的情况下可以降低 谐振频率的谐振腔及滤波器。  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.
本发明提供一种谐振腔， 包括腔体， 和设置在腔体内的谐振子。 所述谐振 子为超材料， 该超材料包括至少一个材料片层， 每个材料片层包括基板和附着 在所述基板上的至少一个人造微结构， 所述人造微结构包括四个支路， 任一所 述支路以一点为旋转中心依次顺时针旋转 90度、 180度和 270度后分别与其他 三个支路重合。  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.
其中， 所述四个支路均交于一个交点， 所述四个支路的任一支路以该交点 为旋转中心依次顺时针旋转 90度、 180度和 270度后分别与其他三个支路重合。 其中， 所述支路包括至少一个弯折部。 Wherein, 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. Wherein the branch road comprises at least one bent portion.
其中， 所述人造微结构的弯折部为直角、 圓角或者尖角。  Wherein, the bent portion of the artificial microstructure is a right angle, a rounded corner or a sharp corner.
其中， 所述人造微结构的任一所述支路中远离旋转中心的一端连接有一线 段。  Wherein 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.
其中， 所述人造微结构的任一所述支路中连接所述线段的一端与所述线段 的中点相连。 结构的中点。  Wherein 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.
其中， 所述人造微结构还包括至少一个与所述工字形结构的中间连接线相 连接的线段， 且所述线段以所述工字形结构的中间连接线轴对称， 所述工字形 结构的中间连接线与所述线段的交点为所述线段的中点。  Wherein 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.
其中， 与所述工字形结构的中间连接线相连接的各所述线段是直线段， 且 各所述线段与所述工字形结构的中间连接线垂直。  Wherein 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.
其中， 与所述工字形结构的中间连接线相连接的各所述线段是弧线段。 其中， 与所述工字形结构的中间连接线相连接的各所述线段是弯折线段。 其中， 与所述工字形结构的中间连接线相连接的所述线段成对出现， 且关 于所述工字形结构的中点对称。  Wherein, each of the line segments connected to the intermediate connecting line of the I-shaped structure is an arc segment. Wherein, each of the line segments connected to the intermediate connecting line of the I-shaped structure is a bent line segment. Wherein 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.
其中， 与所述工字形结构的中间连接线相连接的各所述线段长度相等。 其中， 与所述工字形结构的中间连接线相连接的各所述线段长度从所述工 字形结构的中点向工字形结构的两侧逐渐减小。  Wherein each of the line segments connected to the intermediate connecting line of the I-shaped structure is of equal length. Wherein, 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.
其中， 所述人造微结构还包括四个相对于一点旋转对称的工字形结构或者 工字形结构的衍生结构。  Wherein, 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.
其中， 任一所述支路以及任一所述工字形结构或者工字形结构的衍生结构 以一点为旋转中心依次顺时针旋转 90度、 180度和 270度后分别与其他三个支 路以及其他三个工字形结构或者工字形结构的衍生结构重合。  Wherein 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.
其中， 所述相对于一点旋转对称的工字形结构的中间连接线分别与所述四 个支路的两端在同一直线上。  Wherein, 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.
其中， 所述人造微结构的任一所述支路中远离旋转中心的一端连接有一线 段。 相应地， 本发明实施例还提供了一种滤波器 所述滤波器包括至少一个上 述的谐振腔。 Wherein 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. Correspondingly, an embodiment of the present invention further provides a filter, the filter comprising at least one of the above-mentioned resonant cavities.
实施本发明的技术方案， 具有以下有益效果 根据本发明的技术方案， 通 过在谐振腔内设置超材料可以降低谐振腔的频率: 提高谐振腔的品质因数 Q , 有利于改善谐振腔的性能和实现谐振腔的小型化。 附图说明 例或现有技术描述中所需要使用的附图作筒单地介绍， 显而易见地， 下面描述 中的附图仅仅是本发明的一些实施例， 对于本领域普通技术人员来讲， 在不付 出创造性劳动性的前提下， 还可以根据这些附图获得其他的附图。  The technical solution of the present invention has the following beneficial effects. According to the technical solution of the present invention, 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 The accompanying drawings, which are incorporated in the claims Other drawings may also be obtained from these drawings without the inventive labor.
图 1为本发明第一实施例的谐振腔的示意图；  1 is a schematic view of a resonant cavity of a first embodiment of the present invention;
图 2为本发明第二实施例的谐振腔的示意图；  2 is a schematic view of a resonant cavity according to a second embodiment of the present invention;
图 3至图 7是人造微结构的可能结构示意图；  3 to 7 are schematic views of possible structures of an artificial microstructure;
图 8为本发明第三实施例的谐振腔的示意图；  Figure 8 is a schematic view of a resonant cavity in accordance with a third embodiment of the present invention;
图 9是图 8中双基板单元与夹在双基板单元之间的人造微结构的示意图； 图 10是图 9中的人造微结构的示意图；  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;
图 11是实施例四中的谐振腔的结构示意图；  Figure 11 is a schematic structural view of a resonant cavity in the fourth embodiment;
图 12至图 15是人造微结构的可能结构示意图；  12 to 15 are schematic views showing possible structures of an artificial microstructure;
图 16是实施例五中的谐振腔的结构示意图；  Figure 16 is a schematic structural view of a resonant cavity in the fifth embodiment;
图 17是图 16中双基板单元与夹在双基板单元之间的人造微结构的示意图； 图 18是图 16中的人造微结构的示意图；  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;
图 19是实施例六中的谐振腔中的双基板单元与夹在双基板单元之间的人造 微结构的示意图；  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;
图 20是图 19中的人造微结构的示意图；  Figure 20 is a schematic view of the artificial microstructure of Figure 19;
图 21至图 29是人造微结构的可能结构示意图；  21 to 29 are schematic views showing possible structures of an artificial microstructure;
图 30是实施例七中的谐振腔的结构示意图；  Figure 30 is a schematic structural view of a resonant cavity in the seventh embodiment;
图 31是图 30中一个材料片层上金属微结构的排布示意图；  Figure 31 is a schematic view showing the arrangement of metal microstructures on a sheet of material in Figure 30;
图 32是材料片层上的金属微结构都互不相连时的排布示意图； 图 33至图 34是人造微结构的可能结构示意图 具体实施例 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.
本实施例提供一种谐振腔， 所述谐振腔用于滤波器。 如图 1 所示， 所述谐 振腔包括腔体 1、 支座 2和固定在支座 2上的超材料 3, 该超材料 3包括两个材 料片层， 每个材料片层包括基板和附着在基板上的人造微结构 4。人造微结构可 以通过蚀刻、 电镀、 钻刻、 光刻、 电子刻或离子刻等方式附着于基板上； 相邻 材料片层之间通过一定的封装工艺例如焊接、 铆接、 粘接等方式制成为一个整 体或者通过填充可连接二者的物质例如液态基板原料， 其在固化后将相邻的两 个材料片层粘合， 从而使多个材料片层构成一个整体。 基板采用陶瓷材料， 陶 瓷材料的厚度采用 1毫米， 当然也可以选择聚四氟乙烯、 铁电材料、 铁氧材料、 铁磁材料或者 FR-4制成。 支座 2采用泡沫制成的长方体形结构， 支座 3也可以 为其他结构， 只要可以固定超材料 3 即可， 支座也可以由其他的微波透波材料 制成， 微波透波材料是指对波长在 l~1000mm、 频率在 0.3~300GHz范围的电磁 波的透过率大于 70%的材料， 可以为无机材料、 高分子材料、 无机 /高分子复合 材料或者金刚石材料等。 人造微结构是由金属丝构成的具有一定几何形状的结 构， 这里金属丝使用铜线， 选择铜线的横截面为长方形， 横截面的尺寸为 0.1毫 米 χθ.018毫米， 其中铜线的线宽为 0.1毫米， 铜线的厚度为 0.018毫米， 当然金 属线也可以使用银线等其他金属线， 金属线的横截面也可以为圓柱状、 扁平状 或者其他形状， 其规格也可以为其他的尺寸。 在本实施例中人造微结构的结构 为相互正交的两个工字形结构， 交点为工字形结构的中点。  This embodiment provides a resonant cavity for a filter. As shown in FIG. 1, 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. Of course, 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 χ θ.018 mm, wherein the wire width of the copper wire The thickness of the copper wire is 0.018 mm. Of course, 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. . In the present embodiment, 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.
图 1所示的腔体 1为 20毫米 x20毫米 x20毫米的立方体， 超材料 3的尺寸 为 10毫米 xlO毫米 X2.036毫米，通过仿真可知该谐振腔的谐振频率为 3.898GHz。 当在腔体 1 中放置于与超材料 3相同尺寸大小的金属铜时， 谐振腔的谐振频率 为 7.621GHz,由仿真结果可知放置超材料 3后谐振腔的谐振频率降低比较显著， 因此通过在在腔体 1中放置超材料 3有利于谐振腔的小型化。  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. When 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.
请参阅图 2,本发明第二实施例提供一种谐振腔与实施例一的区别是人造微 结构的形状不同， 人造微结构包括共交点的四个支路， 每个支路包括多个弯折 部， 每个弯折部弯折为直角， 任一支路以交点为旋转中心依顺时针方向旋转 90 度、 180度和 270度后分别与其他三个支路重合， 每个支路中远离旋转中心的一 端分别连接有一个线段且与线段的中点相连。 通过仿真， 谐振腔的谐振频率为Referring to FIG. 2, 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. Through simulation, the resonant frequency of the resonant cavity is
3.389GHz, 对比实施例一可知， 由于增加了弯折部即增加了金属线的长度进一 步降低了谐振腔的谐振频率。 因此改善人造微结构的形状（比如增加弯折部） 有利于谐振腔的小型化。 3.389 GHz, as compared with the first embodiment, 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.
所述人造微结构的四个支路可以不相交，另外人造微结构可以如图 3至图 7 所示， 弯折部可以为圓角或者尖角， 自由端可以连接线段也可以不连接线段； 为了筒化起见， 图 3至图 7中的结构都用细线来画出， 实际上， 上述结构都具 有一定的宽度； 一个基板上不限于只附着一个人造微结构， 可以附着多个人造 微结构。  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; For the sake of tube formation, 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.
请参阅图 8,本发明第三实施例提供一种谐振腔与第一实施例谐振腔基板基 本相同， 其包括腔体 301、 支座 302和固定在支座 302上的超材料 303, 该超材 料 303 包括四个材料片层， 每个材料片层包括两个基板和夹在两个基板之间的 人造微结构。 相对的两个基板虚拟地划分为 12个基板单元对， 每个基板单元对 如图 9所示， 在其所包括的两个基板单元之间夹着一个如图 10所示的人造微结 构。 所述人造微结构的四个支路由相互正交的两个工字形结构构成。 所述人造 微结构还包括与两个工字形结构的中间连接线相交的 8根线段， 工字形结构的 中间连接线与上述 8根线段的垂直相交， 交点为所述线段的中点。 各线段的长 比如人造微结构还可以为图 12及图 15所示； 为了筒化起见， 图 12及图 15中 的结构都用细线来画出， 实际上， 上述结构都具有一定的宽度，  Referring to FIG. 8, 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. ,
图 8所示的腔体 301为 20毫米 x20毫米 x20毫米的立方体， 超材料 303的 尺寸为 12 毫米 xl6 毫米 X8.072 毫米， 通过仿真可知该谐振腔的谐振频率为 2.278GHz。当在腔体 301中不放置超材料 303,空腔对应的谐振频率为 10.63GHz, 当腔体 301 中不放置超材料 303只放置等体积的陶瓷块时， 谐振腔的谐振频率 为 4.517GHz, 由仿真结果可知放置超材料 303后谐振腔的谐振频率降低比较显 著， 因此通过在在腔体 301中放置超材料 303有利于谐振腔的小型化。  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. When the metamaterial 303 is not placed in the cavity 301, the cavity corresponds to a resonant frequency of 10.63 GHz. When the metamaterial 303 is not placed in the cavity 301 and only an equal volume of ceramic blocks is placed, 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.
如图 11所示， 本发明第四实施例提供一种谐振腔与第三实施例谐振腔基板 基本相同， 其不同之处在于， 本实施例的超材料片层为单层基板， 每个基板虚 拟地划分为 12个虚拟的单元， 每个单元上附着一个人造微结构， 超材料 403的 尺寸为 12 毫米 xl6 毫米 X4.072 毫米， 通过仿真可知该谐振腔的谐振频率为 2.842GHz, 当腔体 401中不放置超材料 403及支座 302, 而只放置等体积的陶瓷 块时， 谐振腔的谐振频率为 4.529GHz, 由仿真结果可知放置超材料 403后谐振 腔的谐振频率降低比较显著， 因此通过在在腔体 401 中放置超材料 403有利于 谐振腔的小型化。 As shown in FIG. 11, 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.
请参阅图 16, 本发明第五实施例提供一种谐振腔与第一实施例谐振腔基板 基本相同，本实施例的谐振腔包括腔体 501、超材料 502和支座 503 ,超材料 502 固定在支座 503 上， 该超材料包括六个材料片层， 每个材料片层包括双基板和 夹在两个基板之间的两个人造微结构。 该实施例中每个材料片层包括两个材料 单元， 每个材料单元如图 17所示包括双基板单元和夹在双基板单元之间的人造 微结构； 人造微结构如图 18所示。  Referring to FIG. 16, 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. On the support 503, 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.
本实施例中的人造微结构包括共交点的四个支路还包括分布在四个支路周 围的四个工字形结构， 任一支路以及一个工字形结构以交点为旋转中心依次顺 时针旋转 90度、 180度和 270度后分别与其他三个支路和其他三个工字形结构 重合。  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.
图 16所示的腔体 501的尺寸为 20毫米 x20毫米 x20毫米，超材料 502的尺 寸为 4 毫米 x8 毫米 X12.108 毫米， 通过仿真可知该谐振腔的谐振频率为 1.986GHz 0当在腔体 501中不放置超材料 502,空腔对应的谐振频率为 10.63GHz; 当在腔体 501 中放置于与超材料 502相同尺寸大小的金属铜时， 谐振腔的谐振 频率为 4.526GHz; 由仿真结果可知放置超材料后谐振腔的谐振频率降低比较显 著， 因此通过在腔体 501中放置超材料有利于谐振腔的小型化。 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.
请参阅图 19, 本发明第六实施例提供一种谐振腔与第五实施例谐振腔基板 基本相同， 区别是人造微结构的形状不同， 如图 19所示， 每个材料单元包括双 基板单元和夹在双基板单元之间的人造微结构， 人造微结构如图 20所示， 包括 T形结构的四条支路，该四条支路构成相互正交的两个工字形结构， 交点为工字 形结构的中点， 还包括相对于上述交点旋转对称的四个工字形结构， 这四个工 字形结构的中间连接线分别与上述四条支路形成的工字形结构的中间连接线的 延长线在同一直线上。 通过仿真可知谐振腔的谐振频率为 1.884GHz, 由仿真结 果可知放置超材料后谐振腔的谐振频率降低比较显著， 因此通过在在腔体中放 置超材料有利于谐振腔的小型化。 可以为圓角或者尖角， 远离旋转中心的一端可以连接线段也可以不连接线段， 其结构可以为图 21至图 25所示； 四个支路的四周可以为工字形也可以为工字 形的衍生结构， 如图 26至图 29所示、 为了筒化起见， 图 21至图 29中的结构 都用细线来画出， 实际上， 上述结构都具有一定的宽度； 每个材料片层中的基 板可以是双基板也可以为单基板。 Referring to FIG. 19, 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. As shown in FIG. 19, 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. 20, and includes four branches of a T-shaped structure, the four branches forming two I-shaped structures orthogonal to each other, and the intersection is an I-shape The midpoint of the structure further includes four I-shaped structures that are rotationally symmetric with respect to the intersection point, and the intermediate connecting lines of the four I-shaped structures are respectively in the same extension line as the intermediate connecting line of the I-shaped structure formed by the four branches On the line. It can be seen from the simulation that 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. It can be rounded or pointed, and the end away from the center of rotation can be connected to the line segment or not. The structure can be as shown in Figure 21 to Figure 25; the four branches can be I-shaped or I-shaped. Derived structure, as shown in Figs. 26 to 29, for the sake of tube formation, the structures in Figs. 21 to 29 are all drawn with thin lines. In fact, the above structures all have a certain width; The substrate may be a double substrate or a single substrate.
请参阅图 30, 本发明第七实施例提供一种谐振腔与第一实施例谐振腔基板 基本相同， 谐振腔包括腔体 601、 支座 602和固定在支座 602上的超材料 603。 超材料 603 包括 6个材料片层， 每个材料片层包括基板和附着在基板上的人造 微结构。  Referring to FIG. 30, 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.
如图 31所示， 每个材料片层上排布有两行三列共 6个人造微结构， 人造微 结构包括共交点的四个支路， 每个支路包括 4个弯折部， 每个弯折部弯折为直 角， 任一支路以交点为旋转中心依顺时针方向旋转 90度、 180度和 270度后分 别与其他三个支路重合， 每个支路中远离旋转中心的一端分别连接有一个线段 且与线段的中点相连。 每个材料片层中每行相邻的两个微结构通过金属线 aa，、 bb' 、 cc dd，相连。  As shown in FIG. 31, 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.
图 1所示的腔体 1为 20毫米 x20毫米 x20毫米的立方体，超材料的尺寸为 9 毫米 x6毫米 X6.108毫米， 通过仿真可知该谐振腔的谐振频率为 1.84GHz, 品质 因数 Q=1319。  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 resonance frequency of the cavity is 1.84 GHz by simulation, and the quality factor Q=1319 .
如图 32所示， 当每个材料片层上的人造微结构彼此独立不相连时， 通过仿 真可知谐振腔对应的谐振频率为 1.98GHz, 品质因数 Q=31。  As shown in Fig. 32, when the artificial microstructures on each material layer are not connected to each other independently, it is known by simulation that the resonant frequency corresponding to the resonant cavity is 1.98 GHz, and the quality factor Q=31.
由上述仿真结果可知， 通过将材料片层上的人造微结构相连， 可以降低谐 振腔的谐振频率， 有利于谐振腔的小型化； 同时品质因数 Q值得到了大幅提高， Q值越高意味着谐振腔的损耗越小， 所以该结构的谐振腔的性能得到了明显的 改善。  It can be seen from the above simulation results that by connecting the artificial microstructures on the material layer, the resonant frequency of the resonant cavity can be reduced, which is advantageous for miniaturization of the resonant cavity; at the same time, the quality factor Q value is greatly improved, and the higher the Q value means resonance The smaller the loss of the cavity, the better the performance of the resonant cavity of the structure.
所述人造 结构还可以为图 3-7、 12- 15、 33及 34所示， 人造 结构的四个 支路可以相交也可以不相交， 当然也可以是其他几何形状的结构； 每个材料片 层中的基板可以为实施例中所述的单基板也可以是双基板， 当基板为双基板时 人造微结构夹在两个基板中间； 通过导线相连的人造微结构， 其中导线可以是 实施例中所述的另外添加的导线也可以是人造微结构本身的一部分彼此相连， 以上所揭露的仅为本发明一种较佳实施例而已， 当然不能以此来限定本发 明之权利范围， 因此依本发明权利要求所作的等同变化， 仍属本发明所涵盖的 范围。 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. When the substrate is a double substrate, 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. The above disclosure is only a preferred embodiment of the present invention, and of course, the present invention cannot be limited thereto. The scope of the claims, therefore, equivalent changes made in the claims of the invention are still within the scope of the invention.

Claims

权 利 要 求 Rights request
1. 一种谐振腔， 包括腔体， 和设置在腔体内的谐振子， 其特征在于， 所述 谐振子为超材料， 该超材料包括至少一个材料片层， 每个材料片层包括基板和 附着在所述基板上的至少一个人造微结构， 所述人造微结构包括四个支路， 任 一所述支路以一点为旋转中心依次顺时针旋转 90度、 180度和 270度后分别与 其他三个支路重合。 A resonant cavity comprising a cavity, and a resonator disposed within the cavity, wherein the resonator is a metamaterial, the metamaterial comprising at least one layer of material, each layer of material comprising a substrate and At least one artificial microstructure attached to the substrate, the artificial microstructure comprising four branches, and any of the branches is rotated clockwise by 90 degrees, 180 degrees, and 270 degrees, respectively, with a point as a center of rotation The other three branches coincide.
2. 如权利要求 1所述的谐振腔， 其特征在于， 所述四个支路均交于一个交 点， 所述四个支路的任一支路以该交点为旋转中心依次顺时针旋转 90度、 180 度和 270度后分别与其他三个支路重合。  2. The resonant cavity according to claim 1, wherein the four branches are each intersected at an intersection, and any one of the four branches rotates clockwise 90 degrees with the intersection as a center of rotation. Degrees, 180 degrees and 270 degrees respectively coincide with the other three branches.
3. 如权利要求 1所述的谐振腔， 其特征在于， 所述支路包括至少一个弯折 部。  3. The resonant cavity of claim 1 wherein the branch comprises at least one bend.
4. 如权利要求 3所述的谐振腔， 其特征在于， 所述人造微结构的弯折部为 直角、 圓角或者尖角。  4. The resonant cavity according to claim 3, wherein the bent portion of the artificial microstructure is a right angle, a rounded corner or a pointed corner.
5. 如权利要求 1-4任一项所述的谐振腔， 其特征在于， 所述人造微结构的 任一所述支路中远离旋转中心的一端连接有一线段。  The resonant cavity according to any one of claims 1 to 4, wherein a line segment is connected to one end of any one of the branches of the artificial microstructure away from the center of rotation.
6. 如权利要求 5所述的谐振腔， 其特征在于， 所述人造微结构的任一所述 支路中连接所述线段的一端与所述线段的中点相连。  The resonant cavity according to claim 5, wherein 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.
7. 如权利要求 1所述的谐振腔， 其特征在于， 所述人造微结构为两个相互 正交的工字形结构， 交点为所述工字形结构的中点。  7. The resonant cavity according to claim 1, wherein the artificial microstructure is two orthogonal I-shaped structures, and an intersection point is a midpoint of the I-shaped structure.
8. 如权利要求 7所述的谐振腔， 其特征在于， 所述人造微结构还包括至少 一个与所述工字形结构的中间连接线相连接的线段， 且所述线段以所述工字形 结构的中间连接线轴对称， 所述工字形结构的中间连接线与所述线段的交点为 所述线段的中点。  8. The resonant cavity according to claim 7, wherein the artificial microstructure further comprises at least one line segment connected to an intermediate connection line of the I-shaped structure, and the line segment is in the I-shaped structure The intermediate connecting line is axisymmetric, and the intersection of the intermediate connecting line of the I-shaped structure and the line segment is the midpoint of the line segment.
9. 如权利要求 8所述的谐振腔， 其特征在于， 与所述工字形结构的中间连 接线相连接的各所述线段是直线段， 且各所述线段与所述工字形结构的中间连 接线垂直。  9. The resonant cavity according to claim 8, wherein each of said line segments connected to an intermediate connecting line of said I-shaped structure is a straight line segment, and said line segments are intermediate with said I-shaped structure The connection line is vertical.
10. 如权利要求 8所述的谐振腔， 其特征在于， 与所述工字形结构的中间连 接线相连接的各所述线段是弧线段。  10. The resonant cavity of claim 8, wherein each of said line segments connected to an intermediate connection of said I-shaped structure is an arc segment.
11. 如权利要求 8所述的谐振腔， 其特征在于， 与所述工字形结构的中间连 接线相连接的各所述线段是弯折线段。 11. The resonant cavity of claim 8 in the middle of the I-shaped structure Each of the line segments connected by the wiring is a bent line segment.
12. 如权利要求 8-11 任一项所述的谐振腔， 其特征在于， 与所述工字形结 构的中间连接线相连接的所述线段成对出现， 且关于所述工字形结构的中点对 称。  The resonant cavity according to any one of claims 8-11, wherein the line segments connected to the intermediate connecting line of the I-shaped structure appear in pairs, and about the middle of the I-shaped structure Point symmetry.
13. 如权利要求 8-11 任一项所述的谐振腔， 其特征在于， 与所述工字形结 构的中间连接线相连接的各所述线段长度相等。  The resonant cavity according to any one of claims 8-11, wherein each of said line segments connected to an intermediate connecting line of said I-shaped structure is of equal length.
14. 如权利要求 8-11 任一项所述的谐振腔， 其特征在于， 与所述工字形结 构的中间连接线相连接的各所述线段长度从所述工字形结构的中点向工字形结 构的两侧逐渐减小。  The resonant cavity according to any one of claims 8-11, wherein each of the lengths of the segments connected to the intermediate connecting line of the I-shaped structure is from the midpoint of the I-shaped structure The sides of the glyph structure gradually decrease.
15. 如权利要求 1-4任一项所述的谐振腔， 其特征在于， 所述人造微结构还 包括四个相对于一点旋转对称的工字形结构或者工字形结构的衍生结构。  The resonant cavity according to any one of claims 1 to 4, wherein the artificial microstructure further comprises four derivative structures of an I-shaped structure or an I-shaped structure that are rotationally symmetric with respect to one point.
16. 如权利要求 15所述的谐振腔， 其特征在于， 任一所述支路以及任一所 述工字形结构或者工字形结构的衍生结构以一点为旋转中心依次顺时针旋转 90 度、 180度和 270度后分别与其他三个支路以及其他三个工字形结构或者工字形 结构的衍生结构重合。  16. The resonant cavity according to claim 15, wherein any one of the branches and any of the I-shaped structures or the I-shaped structures are rotated clockwise by 90 degrees, 180 degrees with a point as a center of rotation. Degrees and 270 degrees are respectively coincident with the other three branches and the other three I-shaped structures or the derivative structures of the I-shaped structures.
17. 如权利要求 16所述的谐振腔， 其特征在于， 所述相对于一点旋转对称 的工字形结构的中间连接线分别与所述四个支路的两端在同一直线上。  17. The resonant cavity according to claim 16, wherein the intermediate connecting line of the I-shaped structure that is rotationally symmetric with respect to one point is respectively on the same straight line as the both ends of the four branches.
18. 如权利要求 17所述的谐振腔， 其特征在于， 所述人造微结构的任一所 述支路中远离旋转中心的一端连接有一线段。  18. The resonant cavity of claim 17, wherein one end of any of the branches of the artificial microstructure that is remote from the center of rotation is connected to a line segment.
19. 如权利要求 1-4、 7-11任一项所述的谐振腔， 其特征在于， 所述人造微 结构中至少有两个人造微结构通过导线相连。  19. The resonant cavity of any of claims 1-4, 7-11, wherein at least two of the artificial microstructures are connected by wires.
20. 一种滤波器， 所述滤波器包括至少一个如权利要求 1-19任一项所述的 谐振腔。  A filter comprising at least one resonant cavity according to any of claims 1-19.
PCT/CN2011/084008 2011-07-29 2011-12-14 Resonant cavity and filter having the resonant cavity WO2013016925A1 (en)

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CN201110216478.4 2011-07-29
CN201110216440.7A CN103187608B (en) 2011-07-29 2011-07-29 A kind of resonator
CN201110216461.9 2011-07-29
CN201110216461.9A CN102903997B (en) 2011-07-29 2011-07-29 A kind of resonant cavity
CN201110216440.7 2011-07-29
CN2011102164360A CN102903996A (en) 2011-07-29 2011-07-29 Resonant cavity
CN201110216478.4A CN103035996B (en) 2011-07-29 2011-07-29 A kind of resonator cavity
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