CN102903999B - A kind of resonant cavity - Google Patents
A kind of resonant cavity Download PDFInfo
- Publication number
- CN102903999B CN102903999B CN201110216575.3A CN201110216575A CN102903999B CN 102903999 B CN102903999 B CN 102903999B CN 201110216575 A CN201110216575 A CN 201110216575A CN 102903999 B CN102903999 B CN 102903999B
- Authority
- CN
- China
- Prior art keywords
- resonant cavity
- man
- meta materials
- cavity according
- made microstructure
- 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.)
- Active
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
-
- 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
-
- 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
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The present invention relates to a kind of resonant cavity, comprise housing, be positioned at the resonant cavity of described housing and arrange on the housing and stretch into input and the output of described resonant cavity, two Meta Materials blocks are provided with in described resonant cavity, and described two Meta Materials blocks contact with output with input respectively, each Meta Materials block comprises the substrate that nonmetallic materials are made and the man-made microstructure of adhering on the substrate, and described man-made microstructure is the structure with geometrical pattern of the silk thread composition of electric conducting material.By adding Meta Materials block in resonant cavity, effectively can reduce resonance frequency when not increasing volume, being conducive to the miniaturization realizing filter.
Description
Technical field
The present invention relates to electromagnetic communication field, more particularly, relate to a kind of resonant cavity.
Background technology
Filter is one of common devices in radiotechnics, is widely used in the electronic equipments such as communication, radar, navigation, electronic countermeasures, satellite, test instrumentation.Filter internal is equipped with resonant cavity, and the volume of filter depends primarily on number and the volume of resonant cavity.And the resonance frequency of microwave cavity depends on the volume in this chamber, in general, the larger resonance frequency of volume of resonant cavity is lower, it is higher that volume of resonant cavity reduces resonance frequency, and the resonance frequency therefore how realizing reducing when not increasing resonant cavity size resonant cavity has great importance for the miniaturization of filter.
Summary of the invention
The technical problem to be solved in the present invention is, the above-mentioned resonant cavity low frequency for prior art can cause bulky defect, realizes the resonant cavity of low resonant frequency under providing a kind of condition of not increased in size.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of resonant cavity, it is respectively arranged with input and output on the wall of both sides, two Meta Materials blocks do not contacted are provided with in described resonant cavity, described two Meta Materials blocks contact with output with input respectively, each Meta Materials block comprises the substrate that nonmetallic materials are made and the man-made microstructure of adhering on the substrate, and described man-made microstructure is the structure with geometrical pattern of the silk thread composition of electric conducting material.
In resonant cavity of the present invention, described Meta Materials block comprises multiple stacked all-in-one-piece metamaterial sheet, and each metamaterial sheet comprises a plate base and adheres on the surface of the substrate and the man-made microstructure of periodic arrangement.
In resonant cavity of the present invention, described substrate is made up of pottery, polytetrafluoroethylene, epoxy resin, ferroelectric material, ferrite material, ferromagnetic material or FR-4 material.
In resonant cavity of the present invention, be provided with bearing in described resonant cavity, described bearing is made up of electromagnetic wave transparent material.
In resonant cavity of the present invention, described man-made microstructure is I-shaped or I-shaped derivative shape.
In resonant cavity of the present invention, described man-made microstructure is cross or criss-cross derivative shape.
In resonant cavity of the present invention, described criss-cross derivative shape has four identical branch roads, arbitrary branch road with any be pivot successively 90-degree rotation, overlap respectively at other three branch roads successively after 180 degree, 270 degree.
In resonant cavity of the present invention, three branch roads in each branch road one end and other altogether end points are connected, and the other end is free end, is provided with at least one kink between two ends.
In resonant cavity of the present invention, the free end of described branch road is connected with a line segment.
In resonant cavity of the present invention, described free end is connected with the mid point of described line segment.
Implement resonant cavity of the present invention, there is following beneficial effect: by adding Meta Materials block in resonant cavity, effectively can reduce resonance frequency when not increasing volume, being conducive to the miniaturization realizing filter.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the structural representation of the resonant cavity of the preferred embodiment of the present invention;
Fig. 2 is the structural representation of the Meta Materials block of resonant cavity shown in Fig. 1;
The structural representation of Fig. 3 to be man-made microstructure be I-shaped derivative shape;
The structural representation of Fig. 4 to be man-made microstructure be another derivative shape I-shaped;
The structural representation of Fig. 5 to be man-made microstructure be criss-cross derivative shape;
The structural representation of Fig. 6 to Fig. 8 to be man-made microstructure be another four kinds of criss-cross derivative shapes;
Fig. 9 is the design sketch emulated the resonant cavity not putting into Meta Materials block in resonant cavity;
Figure 10 adds the simulated effect figure after Meta Materials block in Fig. 9 resonant cavity used.
Embodiment
The present invention relates to a kind of resonant cavity, as shown in Figure 1, comprise housing 5, be arranged on housing 5 two side and the input 6 stretched in resonant cavity and output 7, be provided with in resonant cavity be arranged side by side and between be separated with two Meta Materials blocks 1 of spacing, contact with output 7 with input 6 respectively.In the present embodiment, input 6 and output 7 are probe port, are used for making Meta Materials block 1 that resonance occur, and resonance manner is synchronous, reach energy storage frequency reducing thus realize the effect of filter miniaturization.
Fixing for the ease of Meta Materials block 1, can place bearing, bearing arranges slot in resonant cavity, is inserted in slot by Meta Materials block.The electromagnetic wave transparent materials such as bearing preferred foams are as foam, plastics etc.
As shown in Figure 1 and Figure 2, each Meta Materials block 1 comprises at least one metamaterial sheet.When metamaterial sheet has multiple, their are along stacked perpendicular to the direction on its surface and be packaged into one piece of entirety by the mode such as being mechanically connected or bonding.
Each metamaterial sheet includes substrate 3 and attachment man-made microstructure 2 on the substrate 3, and substrate 3 is made up of nonmetallic materials, as polytetrafluoroethylene, epoxy resin, pottery, ferrite material, ferroelectric material, ferromagnetic material, FR-4 material etc.The structure of man-made microstructure 2 certain geometrical pattern that to be at least one rhizoid line form on the surface at substrate 3, such as " work " font, split ring resonator shape etc.The silk thread of man-made microstructure 2 is made up of electric conducting material, is generally metal as silver, copper etc., also can makes with other nonmetallic electric conducting materials such as ITO.The live width of these silk threads, within 1mm, is preferably machinable minimum feature such as 0.1mm; The very thin thickness of silk thread, is generally the thickness of coating, is usually less than 0.1mm in the present invention, such as 0.018mm.
The geometrical pattern of man-made microstructure 2 has a variety of situation, known to I-shaped, and it comprises straight first metal wire 201 and is connected to the first metal wire 201 two ends and by vertical two second metal wires 202 divided equally of the first metal wire 201; I-shaped man-made microstructure like this can also be derivative further, obtain I-shaped derivative shape, as shown in Figure 3, it is except first, second metal wire, also comprise and be connected to every root second metal wire 202 two ends and the 3rd metal wire 203 vertically divided equally by the second metal wire 202, be connected to every root the 3rd metal wire 203 two ends and the 4th metal wire 204 vertically divided equally by the 3rd metal wire 203, the rest may be inferred, continues derivative.
Equally, man-made microstructure 2 of the present invention can also be criss-cross derivative shape, it comprise two vertically and divide equally mutually form criss-cross first metal wire 201, also comprise and be connected to every root first metal wire 201 two ends and the second metal wire 202 vertically divided equally by the first metal wire 201, the derivative shape of formation as shown in Figure 2; Further, when man-made microstructure is except first, second metal wire, also can comprise and be connected to every root second metal wire 202 two ends and the 3rd metal wire 203 vertically divided equally by the second metal wire 202, and being connected to every root the 3rd metal wire 203 two ends and the 4th metal wire 204 vertically divided equally by every root the 3rd metal wire 203, then its structure is as shown in Figure 4.All right the rest may be inferred, obtains other derived structures.
In the embodiment of other criss-cross derivative shapes, man-made microstructure 2 comprises four identical branch roads 210, and four branch roads 210 totally one end points, arbitrary branch road 210 is pivot successively 90-degree rotation with described end points, overlaps respectively at other three branch roads 210 successively after 180 degree, 270 degree.Therefore, such man-made microstructure 2 is isotropic structure, and it is all identical to electromagnetic response characteristic in all directions of the plane at place, the characteristic so the above-mentioned criss-cross derivative shape man-made microstructure as Fig. 2, Fig. 4 also has.Certainly, four branch roads 210 of above-mentioned man-made microstructure 2 also can not be total to end points.
As shown in Fig. 5 to Fig. 8, three branch roads 210 in each branch road 210 one end and other altogether end points are connected, and the other end is free end, is provided with at least one kink between two ends.Here kink can be rolled over as shown in Figure 5 for quarter bend, also can be that wedge angle bends as shown in Figure 6, Figure 7, can also be fillet bending, as shown in Figure 8.The outside of free end also can be connected with straightway, as shown in Figure 7, Figure 8, is preferably the end points of free end and is connected with the mid point of this line segment.
The present invention emulates the resonant cavity that an intra resonant cavity is cavity, cavity is of a size of 20mm × 20mm × 20mm, input and output stretch into 3mm respectively in chamber, as shown in Figure 9, as seen from the figure, the resonance frequency in this cavity resonance chamber is 12.68GHz to its simulated effect figure, S11=-15dB during resonance, S21=-0.00024428dB, S21 are a kind of forward transformation parameter of reflection electromagnetic wave from input to output, represent the size of insertion loss.S21 is less, and insertion loss is less.
Two Meta Materials blocks are loaded in above-mentioned resonant cavity, each Meta Materials block comprises 5 identical metamaterial sheet surfaces and superposes with fitting, substrate selection thickness is the FR4 material of 0.4mm, the overall dimension of each man-made microstructure is 1.3mm × 1.3mm, man-made microstructure according to line displacement and line skew with being 1.4mm to become 5 × 11 array arrangements, and man-made microstructure selects the geometric figure shown in Fig. 8, copper cash is selected to form this figure, live width and walk distance between centers of tracks and be 0.1mm.Input and output are positioned at the position, middle of two Meta Materials block sides all as illustrated in fig. 1.
Adopt the resonant cavity of such Meta Materials block, its simulated effect as shown in Figure 10.As seen from the figure, resonance frequency is 6.8GHz, S11=-28dB, S21=-0.03dB.Therefore can know, although the FR4 material adopting loss relatively large is as substrate, the insertion loss of resonant cavity remains very little, resonance frequency then obtains and effectively reduces, substantially reduce 6GHz, and mould interference is little, line smoothing shows that the response ratio of man-made microstructure is comparatively neat synchronous.
As can be seen here, by adding Meta Materials block in resonant cavity, effectively can reduce resonance frequency when not increasing volume, being conducive to the miniaturization of filter.In addition, the present invention also has the little advantage of insertion loss.
By reference to the accompanying drawings embodiments of the invention are described above; but the present invention is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; instead of it is restrictive; those of ordinary skill in the art is under enlightenment of the present invention; do not departing under the ambit that present inventive concept and claim protect, also can make a lot of form, these all belong within protection of the present invention.
Claims (10)
1. a resonant cavity, the wall of its both sides is respectively arranged with input and output, it is characterized in that, two Meta Materials blocks do not contacted are provided with in described resonant cavity, one of them Meta Materials block contacts with described input, another Meta Materials block contacts with described output, each Meta Materials block comprises at least one metamaterial sheet, each described metamaterial sheet comprises substrate that nonmetallic materials make and attachment on the substrate and the man-made microstructure of rectangular array periodicity arrangement, described man-made microstructure is the structure with geometrical pattern of the silk thread composition of electric conducting material, vertical with the surface that described man-made microstructure is superimposed on substrate with the surface that described input contacts with output.
2. resonant cavity according to claim 1, is characterized in that, each described Meta Materials block comprises multiple stacked all-in-one-piece metamaterial sheet.
3. resonant cavity according to claim 2, is characterized in that, described substrate is made up of pottery, polytetrafluoroethylene, epoxy resin, ferroelectric material, ferrite material, ferromagnetic material or FR-4 material.
4. resonant cavity according to claim 2, is characterized in that, is provided with bearing in described resonant cavity, and described bearing is made up of electromagnetic wave transparent material.
5. resonant cavity according to claim 1, is characterized in that, described man-made microstructure is I-shaped or I-shaped derivative shape.
6. resonant cavity according to claim 1, is characterized in that, described man-made microstructure is cross or criss-cross derivative shape.
7. resonant cavity according to claim 6, it is characterized in that, described criss-cross derivative shape has four identical branch roads, and arbitrary branch road is pivot successively 90-degree rotation with criss-cross central point, overlaps respectively at other three branch roads successively after 180 degree, 270 degree.
8. resonant cavity according to claim 7, is characterized in that, three branch roads in each branch road one end and other altogether end points are connected, and the other end is free end, is provided with at least one kink between two ends.
9. resonant cavity according to claim 8, is characterized in that, the free end of described branch road is connected with a line segment.
10. resonant cavity according to claim 9, is characterized in that, described free end is connected with the mid point of described line segment.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110216575.3A CN102903999B (en) | 2011-07-29 | 2011-07-29 | A kind of resonant cavity |
| PCT/CN2011/083897 WO2013016922A1 (en) | 2011-07-29 | 2011-12-13 | Resonant cavity and filter having the resonant cavity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110216575.3A CN102903999B (en) | 2011-07-29 | 2011-07-29 | A kind of resonant cavity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102903999A CN102903999A (en) | 2013-01-30 |
| CN102903999B true CN102903999B (en) | 2015-11-18 |
Family
ID=47576134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110216575.3A Active CN102903999B (en) | 2011-07-29 | 2011-07-29 | A kind of resonant cavity |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102903999B (en) |
| WO (1) | WO2013016922A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9622338B2 (en) | 2013-01-25 | 2017-04-11 | Laird Technologies, Inc. | Frequency selective structures for EMI mitigation |
| US9307631B2 (en) * | 2013-01-25 | 2016-04-05 | Laird Technologies, Inc. | Cavity resonance reduction and/or shielding structures including frequency selective surfaces |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1787280A (en) * | 2004-12-09 | 2006-06-14 | 上海方盛信息科技有限责任公司 | Electromagnetic forbidden band structure material |
| CN101026257A (en) * | 2007-02-09 | 2007-08-29 | 哈尔滨工业大学 | Super-small resonant cavity |
| JP2008147737A (en) * | 2006-12-06 | 2008-06-26 | Yamaguchi Univ | One-dimensional left-hand system metamaterial |
| CN101499549A (en) * | 2008-02-01 | 2009-08-05 | 清华大学 | Filter |
| CN201608261U (en) * | 2010-02-09 | 2010-10-13 | 安徽省大富机电技术有限公司 | Cavity filter and resonant column |
| CN202423529U (en) * | 2011-07-29 | 2012-09-05 | 深圳光启高等理工研究院 | Resonant cavity |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6727863B2 (en) * | 2001-10-26 | 2004-04-27 | The Hong Kong University Of Science And Technology | Planar band gap materials |
| US8271241B2 (en) * | 2005-01-18 | 2012-09-18 | University Of Massachusetts Lowell | Chiral metamaterials |
-
2011
- 2011-07-29 CN CN201110216575.3A patent/CN102903999B/en active Active
- 2011-12-13 WO PCT/CN2011/083897 patent/WO2013016922A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1787280A (en) * | 2004-12-09 | 2006-06-14 | 上海方盛信息科技有限责任公司 | Electromagnetic forbidden band structure material |
| JP2008147737A (en) * | 2006-12-06 | 2008-06-26 | Yamaguchi Univ | One-dimensional left-hand system metamaterial |
| CN101026257A (en) * | 2007-02-09 | 2007-08-29 | 哈尔滨工业大学 | Super-small resonant cavity |
| CN101499549A (en) * | 2008-02-01 | 2009-08-05 | 清华大学 | Filter |
| CN201608261U (en) * | 2010-02-09 | 2010-10-13 | 安徽省大富机电技术有限公司 | Cavity filter and resonant column |
| CN202423529U (en) * | 2011-07-29 | 2012-09-05 | 深圳光启高等理工研究院 | Resonant cavity |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102903999A (en) | 2013-01-30 |
| WO2013016922A1 (en) | 2013-02-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202150533U (en) | Resonant cavity | |
| CN103441340B (en) | Variable and half-module substrate integrated waveguide leaky-wave antenna frequency scanning polarizes | |
| CN105390819A (en) | Ultra-wideband electromagnetic super-surface circular polarizer | |
| CN205194854U (en) | Super surperficial circular polarization ware of ultra wide band electromagnetism | |
| CN102903999B (en) | A kind of resonant cavity | |
| CN202423529U (en) | Resonant cavity | |
| CN202275915U (en) | Resonant cavity | |
| CN202275913U (en) | Resonant cavity | |
| CN102903995B (en) | Resonant cavity | |
| CN103296371A (en) | Resonance cavity | |
| CN109524794B (en) | Curved circular polarizer | |
| CN103296369B (en) | Resonance cavity | |
| WO2012122814A1 (en) | Electromagnetically-transparent metamaterial | |
| CN103000980B (en) | Resonant cavity | |
| CN102810759B (en) | Novel metamaterial | |
| CN102800981B (en) | Metamaterial with high negative permeability | |
| CN202275901U (en) | Filter | |
| CN103187609B (en) | A kind of resonator cavity | |
| CN102903997B (en) | A kind of resonant cavity | |
| CN102810758B (en) | Novel metamaterial | |
| CN103036043A (en) | Novel metamaterial | |
| CN103036042A (en) | Novel metamaterial | |
| CN103036025B (en) | Horn antenna | |
| CN102709690B (en) | Metamaterial antenna cover | |
| CN202275914U (en) | Resonant cavity |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |