CN202275920U - Resonant cavity - Google Patents
Resonant cavity Download PDFInfo
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- CN202275920U CN202275920U CN2011203726638U CN201120372663U CN202275920U CN 202275920 U CN202275920 U CN 202275920U CN 2011203726638 U CN2011203726638 U CN 2011203726638U CN 201120372663 U CN201120372663 U CN 201120372663U CN 202275920 U CN202275920 U CN 202275920U
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- resonant cavity
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Abstract
Provided is a resonant cavity, comprising a housing with a core space as well as an input end and an output end arranged upon the housing, wherein the input end and the output end respectively extend inside the core space; the resonant cavity is further internally provided with a meta-material block comprising at least one meta-material sheet layer; and a matching layer is coupled between the meta-material block and the input end/output end. The resonant cavity of the utility model can decrease the resonant frequency by arranging a meta-material block having high dielectric constant. As a matching layer is coupled between the meta-material block and the output end/input end, the coupling performance is improved, thereby efficiently conducting the signals to the core space from the input end and then efficiently outputting the signals to the output end. In this way, filter performance is improved.
Description
Technical field
The utility model relates to the communications field, more particularly, relates to a kind of resonant cavity.
Background technology
Filter is one of common device in the radiotechnics, is widely used in the electronic equipments such as communication, radar, navigation, electronic countermeasures, satellite, test instrumentation.Resonant cavity is equipped with in filter inside, and the volume of filter depends primarily on the number and the volume of resonant cavity.And the resonance frequency of microwave cavity depends on the volume in this chamber; In general; The big more resonance frequency of resonant cavity volume is low more; Therefore it is high more that the resonant cavity volume reduces resonance frequency, how to be implemented in the resonance frequency that reduces resonant cavity under the situation that does not increase resonant cavity size and to have great importance for the miniaturization of filter.
Through ultra material is set in resonant cavity; Utilize the high index of refraction of ultra material, the characteristic of high-k; Can under the condition of the volume that does not change resonant cavity, effectively reduce the resonance frequency of resonant cavity, also promptly be equivalent to realize under the identical resonance frequency reducing the volume of resonant cavity.But experiment shows, the input of ultra material and resonant cavity, the coupling effect of output are very poor, cause signal importing, to derive efficient very low, greatly influenced the effect of ultra material in resonant cavity.
The utility model content
The technical problem that the utility model will solve is, the defective to the coupling effect difference of the above-mentioned ultra material of prior art and resonant cavity provides the resonant cavity that a kind of coupling effect is good, the signal conduction efficiency is high.
The utility model solves the technical scheme that its technical problem adopted: construct a kind of resonant cavity; Comprise housing, be contained in input and output on the said housing with inner chamber; Said input and output stretch into respectively in the said inner chamber; Also be provided with ultra material block in the said resonant cavity, said ultra material block comprises at least one ultra sheet of material, and the matching layer that has been of coupled connections between said ultra material block and the input/output.
In the described resonant cavity of the utility model, said ultra sheet of material comprises substrate and attached to a plurality of artificial micro-structural of periodically arranging on the said substrate, and the silk thread that said artificial micro-structural is an electric conducting material is formed has geometric structure.
In the described resonant cavity of the utility model, a matching layer is equipped with at said ultra material block two ends respectively, and two matching layers are connected with output end signal with input respectively.
In the described resonant cavity of the utility model, the material of said substrate is polytetrafluoroethylene, epoxy resin, pottery or SiO
2
In the described resonant cavity of the utility model, said matching layer is microstrip antenna or paster antenna.
In the described resonant cavity of the utility model, said matching layer comprises dielectric-slab, attached to the metal patch on the said dielectric-slab one side with attached to the metal ground plate on the another side of said dielectric-slab.
In the described resonant cavity of the utility model, said metal patch is towards said ultra material block, and said metal ground plate is then towards said housing intracavity space.
In the described resonant cavity of the utility model, said metal patch is tape shape or area paster.
In the described resonant cavity of the utility model, the dielectric-slab of said matching layer, the material of the metal patch material with the substrate of said ultra sheet of material, artificial micro-structural respectively are identical
In the described resonant cavity of the utility model, the frequency of said matching layer is suitable with the resonance frequency of said ultra material block.
Implement the resonant cavity of the utility model, have following beneficial effect: have the ultra material block of high-k through setting, can reduce resonance frequency; Through the matching layer that between ultra material block and input, output, is coupled, can improve coupling performance, thereby with signal expeditiously in the input introduction chamber,, and then improve the performance of filter everywhere expeditiously again from output signal.
Description of drawings
To combine accompanying drawing and embodiment that the utility model is described further below, in the accompanying drawing:
Fig. 1 is the structural representation of the resonant cavity of the utility model preferred embodiment;
Fig. 2 is the vertical view of resonant cavity shown in Figure 1;
Fig. 3 is the A-A profile of Fig. 2;
Fig. 4 is the explosive view of ultra material block and first, second matching layer;
Fig. 5 is the derive shape structure of artificial micro-structural for " worker " font;
Fig. 6 is the derive shape structure of artificial micro-structural for " ten " font.
Embodiment
The utility model relates to a kind of resonant cavity, to shown in Figure 4, comprises housing 1, input 3, output 4, ultra material block 6 and matching layer 5 like Fig. 1.
Housing 1 is made of copper usually, has square inner chamber.Chamber lid 2 can be set on the housing 1, inner chamber is sealed into an independently cavity.Input 3 is contained in respectively on the both sides sidewall of housing 1 with output 4, and extend in the inner chamber from the outside.The innovative point of the utility model is; In inner chamber, put into ultra material block 6 and matching layer 5; The characteristic of the high-k of the ultra material block 6 of utilization reduces the resonance frequency of resonant cavity on the one hand; Utilize matching layer 5 to improve the coupling effect between ultra material block 6 and input 3, the output 4 on the other hand, improve effectiveness.
As shown in Figure 4; Ultra material block 6 comprises at least one ultra sheet of material 7; When ultra sheet of material 7 has when a plurality of, their front and rear surfaces are fixedly attached to together with modes such as machinery or physics fusions with fitting, and also can turn up the soil at interval at a certain distance each other links into an integrated entity.Each ultra sheet of material 7 be by substrate 71 with attached to becoming a plurality of artificial micro-structural 72 of periodically arranging to constitute on the substrate 71.Wherein, substrate 71 is used for being processed by nonmetallic materials usually, for example FR-4 material, polytetrafluoroethylene, epoxy resin, pottery or SiO at the bottom of artificial micro-structural 72 provides adherance
2The structure that 72 silk threads of being processed by electric conducting material of artificial micro-structural are formed, for example " worker " font, " ten " font, split ring resonator shape or the like with certain geometrical shape.The electric conducting material here is generally copper, silver, indium tin oxide etc.
In the utility model, utilize the characteristic of the high-k of ultra material to reduce the resonance frequency of resonant cavity, therefore, the design of artificial micro-structural 72 wants to realize the requirement of high-k.At first, the size of artificial micro-structural 72 is preferably 1/10th about 1/5th to 1/10th of the pairing electromagnetic wavelength of resonance frequency.When artificial micro-structural 72 is arranged into a rectangular array; Also be appreciated that into the line space arranged and column pitch at about 1/10th of this wavelength; And the size of artificial micro-structural 72 satisfies this artificial micro-structural 72 can be contained in line space and column pitch serves as in the long and wide rectangular grid, and the edge that the maximum outline of artificial micro-structural 72 can approach to this rectangular grid also promptly takes grid basically.As for the concrete size of artificial micro-structural 72, can satisfy the requirement of resonant cavity up to resonance frequency according to constantly adjustment among a small circle of simulation result.
In addition; In resonant cavity, put into ultra material block 6; Can reduce resonance frequency, but for the frequency reducing effect is more obvious, the geometry of artificial micro-structural 72 can be selected to the tangible planform of electric field response; " worker " font for example comprises straight first metal wire and is connected to the first metal wire two ends and perpendicular to two second metal wires of first metal wire; Further derive; Artificial micro-structural 72 can be connected every second metal wire two ends and perpendicular to four the 3rd metal wires of second metal wire on I-shaped basis, comprising; Can also comprise being connected to every the 3rd metal wire two ends and perpendicular to eight the 4th metal wires of the 3rd metal wire, as shown in Figure 5.By that analogy, infinite derived structure can also be arranged.
Equally; The artificial micro-structural 72 of the ultra material block 6 of the utility model can also be deriving of " ten " font; As shown in Figure 4, comprise each other vertical two first metal wires that constitute " ten " word and be connected to every first metal wire two ends and perpendicular to four second metal wires of first metal wire that is connected; Further derive; Artificial micro-structural 72 can also comprise on the basis of deriving of above-mentioned " ten " font and is connected every second metal wire two ends and perpendicular to eight the 3rd metal wires of second metal wire that is connected; Also can comprise being connected to every the 3rd metal wire two ends and perpendicular to ten six roots of sensation the 4th metal wire of the 3rd metal wire, as shown in Figure 6.Further, by that analogy, can obtain infinite derived structure.
Certainly, the artificial micro-structural 72 of other shapes also can make ultra sheet of material 7 have the effect of high index of refraction, thereby realizes the frequency reducing purpose of resonant cavity.Therefore, the artificial micro-structural 72 of the utility model is not limited in the said structure form.
Because ultra material block 6 belongs to diverse material and character with input 3, output 4, if so the both sides of ultra material block 6 are direct and input 3, output 4 are of coupled connections, coupling performance and effect are poor.In order to improve coupling performance; The utility model is equipped with matching layer between ultra material block 6 and input 3 or output 4, can only at ultra material block 6 one ends matching layer 5 be installed, and also can matching layer 5 all be installed in the both sides of ultra material block 6; In the present embodiment; In order to improve performance, matching layer 5 is all installed in both sides, like Fig. 3, shown in Figure 4.
The matching layer 5 of the utility model can be the various matching layers that can receive with radiation signal, preferred microstrip antenna or paster antenna.Like Fig. 2, shown in Figure 4, the antenna of the utility model comprises dielectric-slab 51, attached to the metal patch 52 on dielectric-slab 51 one side with attached to the metal ground plate 53 of dielectric-slab 51 another sides.The metal patch 52 of present embodiment is the tape shape, can certainly be the area paster with certain square or other shapes commonly used, has perhaps both had the area paster and has also comprised circle or the many astragals strip paster that is centered around outside the area paster.These pasters are fabricated on the dielectric-slab 51 through etch process.Input 3 is connected with the ground plate of a matching layer 5 respectively with output 4 and is coupled, as long as the coupling between them can realize the signal transmission, can be wired connection, also can adopt wireless connections.
In order to improve coupling performance, thereby metal patch 52 directly is coupled towards said ultra material block 6 and ultra material block 6, and 53 of metal ground plates are towards said housing 1 intracavity space, and promptly metal patch 52 inwards and metal ground plate 53 is outside.Dielectric-slab 51 can adopt with substrate 71 identical materials of ultra sheet of material 7 and process, and for example all adopts FR-4 material or polytetrafluoroethylene.Equally, metal patch 52 also can adopt identical electric conducting material to process with artificial micro-structural 72, for example all adopts copper.Simultaneously, the frequency of the matching layer 5 preferably resonance frequency with ultra material block 6 is suitable, and for example frequency is all on the one magnitude or on the consecutive number magnitude.In addition, it is identical with ultra sheet of material 7 that the size of matching layer 5 such as area and thickness can be designed to, thereby be made into an integral body with ultra material block 6, so that install and the location.The matching layer 5 of sheet can also can not contact but close like the directly contact connection of ultra material block 6 surfaces.Certainly, the matching layer 5 of the utility model not only can adopt microstrip antenna, also can adopt other radio-frequency antennas.
Adopt the resonant cavity of the utility model, have the ultra material block 6 of high-k, can reduce resonance frequency through setting; Through coupling matching layer 5 between ultra material block 6 and input 3, output 4, can improve coupling performance, thereby with signal expeditiously in the input introduction chamber,, and then improve the performance of filter everywhere expeditiously again from output signal.
Combine accompanying drawing that the embodiment of the utility model is described above; But the utility model is not limited to above-mentioned embodiment, and above-mentioned embodiment only is schematically, rather than restrictive; Those of ordinary skill in the art is under the enlightenment of the utility model; Not breaking away under the scope situation that the utility model aim and claim protect, also can make a lot of forms, these all belong within the protection of the utility model.
Claims (10)
1. resonant cavity; Comprise housing, be contained in input and output on the said housing with inner chamber; Said input and output stretch into respectively in the said inner chamber, it is characterized in that, also are provided with ultra material block in the said resonant cavity; Said ultra material block comprises at least one ultra sheet of material, and the matching layer that has been of coupled connections between said ultra material block and the input/output.
2. resonant cavity according to claim 1; It is characterized in that; Said ultra sheet of material comprises substrate and attached to a plurality of artificial micro-structural of periodically arranging on the said substrate, and the silk thread that said artificial micro-structural is an electric conducting material is formed has geometric structure.
3. resonant cavity according to claim 2 is characterized in that, a matching layer is equipped with at said ultra material block two ends respectively, and two matching layers are connected with output end signal with input respectively.
4. resonant cavity according to claim 2 is characterized in that, said matching layer is an antenna.
5. resonant cavity according to claim 2 is characterized in that, said matching layer is microstrip antenna or paster antenna.
6. resonant cavity according to claim 1 is characterized in that, said matching layer comprises dielectric-slab, attached to the metal patch on the said dielectric-slab one side with attached to the metal ground plate on the another side of said dielectric-slab.
7. resonant cavity according to claim 6 is characterized in that, said metal patch is towards said ultra material block, and said metal ground plate is then towards said housing intracavity space.
8. resonant cavity according to claim 6 is characterized in that, said metal patch is tape shape or area paster.
9. resonant cavity according to claim 6 is characterized in that, the dielectric-slab of said matching layer, the material of the metal patch material with the substrate of said ultra sheet of material, artificial micro-structural respectively are identical
10. resonant cavity according to claim 1 is characterized in that, the frequency of said matching layer is suitable with the resonance frequency of said ultra material block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203726638U CN202275920U (en) | 2011-09-30 | 2011-09-30 | Resonant cavity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203726638U CN202275920U (en) | 2011-09-30 | 2011-09-30 | Resonant cavity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202275920U true CN202275920U (en) | 2012-06-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203726638U Expired - Lifetime CN202275920U (en) | 2011-09-30 | 2011-09-30 | Resonant cavity |
Country Status (1)
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| CN (1) | CN202275920U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103035999A (en) * | 2011-09-30 | 2013-04-10 | 深圳光启高等理工研究院 | Resonant cavity |
| EP2924802A4 (en) * | 2012-11-20 | 2016-07-13 | Kuang Chi Innovative Tech Ltd | Harmonic oscillator and cavity filter and electromagnetic wave device thereof |
-
2011
- 2011-09-30 CN CN2011203726638U patent/CN202275920U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103035999A (en) * | 2011-09-30 | 2013-04-10 | 深圳光启高等理工研究院 | Resonant cavity |
| CN103035999B (en) * | 2011-09-30 | 2016-09-28 | 深圳光启高等理工研究院 | A kind of resonator cavity |
| EP2924802A4 (en) * | 2012-11-20 | 2016-07-13 | Kuang Chi Innovative Tech Ltd | Harmonic oscillator and cavity filter and electromagnetic wave device thereof |
| US9711832B2 (en) | 2012-11-20 | 2017-07-18 | Kuang-Chi Innovative Technology Ltd. | Harmonic oscillator and cavity filter and electromagnetic wave device thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 518057 2, building 9, hi tech middle 1, Nanshan District high tech Zone, Shenzhen, Guangdong. Co-patentee after: Shenzhen Kuang-Chi Innovation Technology Co., Ltd. Patentee after: Shenzhen Kuang-Chi Institute of Advanced Technology Address before: 518000 software building 9, hi tech middle 1, central high tech Zone, Shenzhen, Guangdong, China. Co-patentee before: Shenzhen Kuang-Chi Innovation Technology Co., Ltd. Patentee before: Shenzhen Kuang-Chi Institute of Advanced Technology |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120613 |