CN202217777U - Resonant cavity - Google Patents
Resonant cavity Download PDFInfo
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- CN202217777U CN202217777U CN2011202959397U CN201120295939U CN202217777U CN 202217777 U CN202217777 U CN 202217777U CN 2011202959397 U CN2011202959397 U CN 2011202959397U CN 201120295939 U CN201120295939 U CN 201120295939U CN 202217777 U CN202217777 U CN 202217777U
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- resonant cavity
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Abstract
The utility model relates to a resonant cavity including a cavity and two exciting ports installed on two side walls of the cavity respectively and both extending into the cavity. The two exciting ports are arranged oppositely. At least one ultra material sheet layer is disposed in the cavity. The ultra material sheet layer includes a substrate made of non-metal material and an artificial micro structure adhering to the substrate. The artificial micro structure includes at least two threads made of conductive material. And at least parts of the two threads are disposed in parallel. By adopting the resonant cavity in the utility model, the resonant frequency of the resonant cavity can be reduced substantially. The volume of the resonant cavity is obviously reduced substantially in realizing the same resonant frequency compared with a resonant cavity in the prior art.
Description
Technical field
The utility model relates to the electromagnetic communication 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.
The utility model content
The technical problem that the utility model will solve is that the big defective of the low inevitable resonant cavity volume of above-mentioned resonance frequency to prior art provides a kind of and realizes low-frequency resonant and the little resonant cavity of volume.
The utility model solves the technical scheme that its technical problem adopted: construct a kind of resonant cavity; Comprise cavity, be installed on the two side of said cavity respectively and all extend into two excitation port of said inside cavity; Said two excitation port are provided with in opposite directions; Be placed with at least one ultra sheet of material in the said cavity; Each ultra sheet of material comprises the substrate of nonmetallic materials and attached to the artificial micro-structural on the said substrate, said artificial micro-structural comprises the silk thread that at least two electric conducting materials are processed, and two rhizoid line partial parallel settings at least.
In the described resonant cavity of the utility model, said artificial micro-structural comprises at least two rhizoid lines, and every rhizoid line becomes a split ring structure, and each split ring structure is positioned at the inside of another split ring successively.
In the described resonant cavity of the utility model, said split ring structure is circular open ring or rectangular aperture ring.
In the described resonant cavity of the utility model, the opening of adjacent two split ring structures becomes 180 degree to be provided with in opposite directions.
In the described resonant cavity of the utility model, said artificial micro-structural be two rhizoid lines in parallel to each other spiral form.
In the described resonant cavity of the utility model, said artificial micro-structural is that snakelike in parallel to each other the detouring of two rhizoid lines forms.
In the described resonant cavity of the utility model, said artificial micro-structural comprises two rhizoid lines, has the sets of parallel that is made up of many parallel lines on every rhizoid line, and the parallel lines of two sets of parallel are parallel to each other and replace successively.
In the described resonant cavity of the utility model, said ultra sheet of material has at least two, and adjacent two surpassing between the sheet of material becomes one through mechanical connection or bonding mode.
In the described resonant cavity of the utility model, said ultra sheet of material places the middle of said inside cavity.
In the described resonant cavity of the utility model, be placed with the bearing that supports said ultra sheet of material on the said inside cavity bottom surface, said bearing is processed by electromagnetic wave transparent material.
Implement the resonant cavity of the utility model, have following beneficial effect: can reduce the resonance frequency of resonant cavity greatly, if will realize identical resonance frequency, obviously the volume of resonant cavity reduces greatly.
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 cutaway view of resonant cavity shown in Figure 1;
Fig. 4 is that artificial micro-structural is the sketch map of a plurality of circular open rings;
Fig. 5 is the sketch map that artificial micro-structural comprises two sets of parallel;
Fig. 6 is that artificial micro-structural is two parallel spiral sketch mapes that form of silk thread;
Fig. 7 is that artificial micro-structural comprises two anorthospiral structural representations of silk thread;
Fig. 8 is that artificial micro-structural is two snakelike abreast sketch mapes that detour of silk thread.
Embodiment
The utility model relates to a kind of resonant cavity, and is as shown in Figure 1, comprises cavity 1, excitation port 3 and ultra sheet of material 4.When thereby cavity 1 is the structure of open upper end formation cavity, thereby resonant cavity also comprises the chamber lid 2 that covers enclosed cavity on cavity 1 openend.Excitation port 3 has two, is installed in respectively on the two side of said cavity 1, and all extend into cavity 1 inside, and two excitation port 3 are provided with in opposite directions.
As shown in Figure 2, ultra sheet of material 4 is positioned at cavity 1 inside, and between two excitation port 3.The end of two excitation port 3 is against respectively on the both sides of the edge of ultra sheet of material 4, and is as shown in Figure 3.When ultra sheet of material 4 has when a plurality of, adjacent two surpassing between the sheet of material 4 through mechanical connection such as welding, riveted joint, bolted mode connects together, and also can be integral through bonding agent is bonding.The ultra material monolithic that at least one ultra sheet of material 4 constitutes; Preferably place the middle of cavity 1 inside; Promptly the forward and backward inwall of the forward and backward surface distance cavity 1 of ultra material monolithic equates respectively; The left and right surfaces of ultra material monolithic equates respectively that apart from the both sides inwall of cavity 1 the upper and lower inwall of the upper and lower surface distance cavity 1 of ultra material monolithic equates respectively.In order to guarantee the steadiness of ultra material monolithic in inside cavity, can on the bottom surface of cavity 1, place the bearing that supports ultra sheet of material 4, said bearing is by processing the little electromagnetic wave transparent material of electromagnetic wave loss, for example plastics, foam etc.More than be resonant cavity preferred version structurally, for example excitation port 3 must not contact in the both sides of ultra sheet of material 4, and ultra sheet of material 4 must not be positioned at the middle of cavity yet, and it can directly place the bottom of cavity, level or vertical placement etc.
Like Fig. 2, shown in Figure 3, each ultra sheet of material 4 comprises substrate 5 and attached to the artificial micro-structural 6 on the substrate 5.Substrate 5 is processed by nonmetallic materials usually, for example polytetrafluoroethylene, epoxy resin, pottery, FR-4 material, ferroelectric material, ferrite material, ferromagnetic material, SiO
2Deng.In the utility model, substrate 5 preferably ceramic materials.Artificial micro-structural comprises the silk thread that at least two electric conducting materials are processed, and two rhizoid line partial parallel settings at least.The electric conducting material here is metal such as copper, silver etc. normally, also can be for example ITO, graphite, CNTs etc. of other materials that can conduct electricity.
In ultra field of materials; Artificial micro-structural can be that the circuit that capacitor and inductor is formed is analyzed through Approximate Equivalent to electromagnetic influence; Two rhizoid lines have part to be parallel to each other, and this section parallel portion can Approximate Equivalent be two pole plates of an electric capacity, and parallel part is long more; It is big more to be equivalent to the two-plate area, and then capacitance is big more.
can know according to formula; Electric capacity is big more, and then resonance frequency is low more.Therefore, adopt the artificial micro-structural 6 with this characteristic of the utility model, can effectively reduce the resonance frequency of resonant cavity, and the resonance frequency of reduction resonant cavity reduces the key point of filter volume just.In order to increase capacitance as far as possible, can two silk threads be detoured as much as possible, to increase the line length of the part that parallels between two silk threads.
The branch spirality that detours detours and detours two kinds with snakelike.The spirality of this paper detours, and is meant with any to begin that outside from coil to coil curls up and the curve that forms whenever is around a circle and detours once.The example of the artificial micro-structural 6 that spirality detours such as Fig. 6, shown in Figure 7.Shown in Fig. 6 is two copper cash or silver-colored line 2 helical structures that obtain of circle that respectively detour in parallel to each other.The line segment straightway terminal with being connected to each helical segment that is detoured by shown in Figure 6 two parallel spirals that can be regarded as shown in Figure 7 constitutes; Arbitrary helical segment and the terminal straightway that connects thereof still belong to a silk thread owing to do not break off.In the present embodiment, detouring except two helixes are parallel constitutes the electric capacity, and two terminal straightways laterally arrange and also constitute an electric capacity.
The snakelike of this paper detoured; Be meant a bit and carry out the next one back and forth at last once reciprocating terminal point as starting point after the reciprocating motion once from a starting point; Recursion successively; Each reciprocating terminal point all leaves its starting point certain distance along same direction, and the track that obtains is very snakelike to detour, and once reciprocating is moved to once detouring.Snakelike artificial micro-structural 6 examples that detour like this are as shown in Figure 8; It comprises two snakelike silk threads that detour in right angle; Therefore two rhizoid lines part is parallel in the horizontal direction; Part is parallel at vertical direction, and the part that parallels is substantially equal to the line length of a rhizoid line, therefore can increase electric capacity as much as possible.
Certainly, the artificial micro-structural 6 of the utility model can existing spirality detour, and snakelike detouring arranged again.Simultaneously, artificial micro-structural can also have other versions, to realize the setting of partial parallel at least of at least two silk threads.
Among the embodiment as shown in Figure 3; Each artificial micro-structural comprises the multi-filament line; Every rhizoid line becomes a split ring structure, and therefore artificial micro-structural has a plurality of split ring structures, and the first split ring structure is positioned at the inside of the second split ring structure; The second split ring structure is positioned at the inside of the 3rd split ring structure, and the rest may be inferred.In the present embodiment, split ring structure one has 6, is the rectangular aperture ring, and each rectangular aperture ring average level is placed, and makes that each long limit is parallel mutually with broadside, constitutes a plurality of electric capacity.Simultaneously, the opening of adjacent two split ring structures becomes 180 degree to be provided with in opposite directions, can obtain good resonance effect.
Among the embodiment shown in Figure 4, artificial micro-structural also constitutes by a plurality of split ring structures are nested successively, and the split ring structure of present embodiment is the circular open ring, and the concyclic heart setting of a plurality of circular open ring, constitutes capacity effect thereby make each circumference be parallel to each other.Equally, the opening of adjacent two split ring structures becomes 180 degree to be provided with in opposite directions.
Among the embodiment shown in Figure 5, artificial micro-structural comprises two rhizoid lines, and every rhizoid line becomes comb shape, and it comprises the straight line section and is connected in turn on the straightway and all perpendicular to many parallel lines of this straightway, sets of parallel of these parallel lines formations.Two rhizoid lines are provided with in opposite directions, make that two straightways are parallel, and the parallel lines of two sets of parallel replace successively, and are as shown in Figure 5.Adjacent two parallel lines lay respectively on two silk threads, and the two promptly constitutes the two-plate of electric capacity.
The artificial micro-structural of the utility model also has multiple variation pattern, and this paper enumerates no longer one by one.Every line length that utilizes the parallel portion formation electric capacity of adjacent two silk threads and prolong parallel portion as far as possible all belongs to the artificial micro-structural 6 of the utility model to increase electric capacity and then to reduce the artificial micro-structural of thanking to vibration frequency.Adopting in such a way, make artificial micro-structural 6 on basic 5 plates, adhere to more than 30% of area that shared area can reach the substrate surface at place, also is that duty ratio reaches 30%.Preferably, the approaching perhaps live width of distance between centers of tracks of walking of the live width of the silk thread of artificial micro-structural 6 and silk thread is slightly larger than away distance between centers of tracks in the utility model, makes the duty specific energy reach more than 50%, and the live width minimum can reach 0.1mm in the modern processing technique.
In order to verify the effect of the utility model, the resonant cavity of the utility model and the resonant cavity of cavity are carried out simulation comparison experiment.A copper resonant cavity is carried out emulation, and its cavity size is 20mm * 20mm * 20mm, and the resonance frequency of measurement is 10.63GHz.The ultra sheet of material that adds has 6, and substrate is a ceramic material, and every substrate is of a size of 10mm * 10mm * 1mm, and wherein 1mm is a thickness; Artificial micro-structural is a copper cash, live width 0.1mm, and thickness is 0.018mm, structure is as shown in Figure 3, is of a size of 9.8mm * 9.8mm.Emulation draws has the resonant cavity of ultra sheet of material like this, and its resonance frequency drops to 1.166GHz.It is thus clear that resonance frequency reduces greatly, if will realize identical resonance frequency, obviously the volume of resonant cavity reduces greatly.
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 cavity, be installed on the two side of said cavity respectively and all extend into two excitation port of said inside cavity; Said two excitation port are provided with in opposite directions, it is characterized in that, are placed with at least one ultra sheet of material in the said cavity; Each ultra sheet of material comprises the substrate of nonmetallic materials and attached to a plurality of artificial micro-structural on the said substrate, said artificial micro-structural comprises the silk thread that at least two electric conducting materials are processed.
2. resonant cavity according to claim 1 is characterized in that, two rhizoid line partial parallel settings at least of said artificial micro-structural.
3. resonant cavity according to claim 1 is characterized in that, said artificial micro-structural comprises at least two rhizoid lines, and every rhizoid line becomes a split ring structure, and each split ring structure is positioned at the inside of another split ring successively.
4. resonant cavity according to claim 3 is characterized in that, said split ring structure is circular open ring, elliptical openings ring, triangle open mouth ring, rectangular aperture ring or polygonal-shaped openings ring.
5. resonant cavity according to claim 4 is characterized in that, the opening of adjacent two split ring structures becomes 180 degree to be provided with in opposite directions.
6. resonant cavity according to claim 1 is characterized in that, said artificial micro-structural is that spiral or snakelike detouring form two rhizoid lines in parallel to each other.
7. resonant cavity according to claim 1 is characterized in that, said artificial micro-structural comprises two rhizoid lines, has the sets of parallel that is made up of many parallel lines on every rhizoid line, and the parallel lines of two sets of parallel are parallel to each other and replace successively.
8. resonant cavity according to claim 1 is characterized in that, said ultra sheet of material has at least two, and adjacent two surpassing between the sheet of material becomes one through mechanical connection or bonding mode.
9. resonant cavity according to claim 1 is characterized in that said ultra sheet of material places the middle of said inside cavity.
10. resonant cavity according to claim 1 is characterized in that, is placed with the bearing that supports said ultra sheet of material on the said inside cavity bottom surface, and said bearing is processed by electromagnetic wave transparent material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202959397U CN202217777U (en) | 2011-08-16 | 2011-08-16 | Resonant cavity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202959397U CN202217777U (en) | 2011-08-16 | 2011-08-16 | Resonant cavity |
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| Publication Number | Publication Date |
|---|---|
| CN202217777U true CN202217777U (en) | 2012-05-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202959397U Expired - Lifetime CN202217777U (en) | 2011-08-16 | 2011-08-16 | Resonant cavity |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102723608A (en) * | 2012-02-29 | 2012-10-10 | 深圳光启创新技术有限公司 | Metamaterial |
| CN102938489A (en) * | 2011-08-16 | 2013-02-20 | 深圳光启高等理工研究院 | Resonant cavity |
-
2011
- 2011-08-16 CN CN2011202959397U patent/CN202217777U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102938489A (en) * | 2011-08-16 | 2013-02-20 | 深圳光启高等理工研究院 | Resonant cavity |
| CN102938489B (en) * | 2011-08-16 | 2016-09-28 | 深圳光启高等理工研究院 | A kind of resonator cavity |
| CN102723608A (en) * | 2012-02-29 | 2012-10-10 | 深圳光启创新技术有限公司 | Metamaterial |
| CN102723608B (en) * | 2012-02-29 | 2015-09-09 | 深圳光启创新技术有限公司 | A kind of Meta Materials |
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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 |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120509 |