CN103296369B - Resonance cavity - Google Patents
Resonance cavity Download PDFInfo
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- CN103296369B CN103296369B CN201210050165.0A CN201210050165A CN103296369B CN 103296369 B CN103296369 B CN 103296369B CN 201210050165 A CN201210050165 A CN 201210050165A CN 103296369 B CN103296369 B CN 103296369B
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- resonator
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Abstract
The invention relates to a resonance cavity which comprises a shell body provided with an inner cavity. Patch antennas are connected to two opposite side walls of the inner cavity respectively. A metamaterial block is arranged between the two patch antennas and comprises at least one metamaterial sheet layer. Each metamaterial sheet layer comprises a substrate and multiple manmade microstructures which are arranged on the substrate periodically. The manmade microstructures are of geometric structures composed of wires made of conductive materials. A resonance frequency of the resonance cavity can be reduced by arranging the metamaterial block with a high dielectric constant. Coupling performance can be improved by arranging the patch antennas between inputting and outputting in a coupling mode, and thus, signals can be conducted into the cavity from the input end with high efficiency and conducted out from the output end with high efficiency. Thus, performances of a filter are improved.
Description
Technical field
A kind of the present invention relates to communications field, more particularly, it relates to resonator.
Background technology
Wave filter is one of common devices in radiotechnics, is widely used in communication, radar, navigation, electronics pair
In the electronic equipments such as anti-, satellite, test instrumentation.Filter internal is equipped with resonator, and the volume of wave filter depends primarily on resonance
The number in chamber and volume.And the resonant frequency of microwave cavity depends on the volume in the chamber, in general, volume of resonant cavity is bigger
Resonant frequency is lower, and volume of resonant cavity reduction resonant frequency is higher, therefore how to realize in the situation for not increasing resonant cavity size
The lower resonant frequency for reducing resonator has great importance for the miniaturization of wave filter.
By arranging Meta Materials in resonator, using the high index of refraction of Meta Materials, the characteristic of high-k, Neng Gou
The resonant frequency of resonator is reduced under conditions of not changing the volume of resonator effectively, namely it is real equivalent under identical resonance frequency
The volume for reducing resonator is showed.But, experiment shows, the input of Meta Materials and resonator, output end coupling effect very
Difference, causes the importing of signal, derivation efficiency very low, greatly have impact on application effect of the Meta Materials in resonator.
The content of the invention
The technical problem to be solved in the present invention is, for the coupling effect of the above-mentioned Meta Materials and resonator of prior art
Poor defect, there is provided a kind of coupling effect is good, the resonator of signal transduction efficiency high.
The technical solution adopted for the present invention to solve the technical problems is：A kind of resonator is constructed, including with inner chamber
Housing, is respectively connected with a paster antenna on the opposite two side of the inner chamber, is additionally provided between two paster antenna
Meta Materials block, the Meta Materials block include at least one metamaterial sheet, and each described metamaterial sheet includes substrate and attachment
Multiple man-made microstructures of periodic arrangement on the substrate, the silk thread tool that constitute of the man-made microstructure for conductive material
There is geometric structure.
In resonator of the present invention, the paster antenna is circular polarized antenna, including made by nonmetallic materials
The sheet metal attached on dielectric-slab and the dielectric-slab.
In resonator of the present invention, the sheet metal is located at the side table towards enclosure interior of the dielectric-slab
On face.
In resonator of the present invention, the sheet metal is rectangular metal sheet, and four of the rectangular metal sheet
Open up the groove that the central point of oriented rectangle extends on angle respectively.
In resonator of the present invention, the dielectric-slab is fitted with the side wall wall of the inner chamber, makes the housing
Become the earth terminal of the paster antenna.
In resonator of the present invention, one face metal clad piece of the dielectric-slab, another side is provided with coaxial line, described
Coaxial line is electrically connected through the dielectric-slab with the sheet metal, and the resonator is with the coaxial line of described two paster antennas point
Wei not input, output end.
In resonator of the present invention, the metamaterial sheet is perpendicular to the paster antenna, and the Meta Materials
Block is located at housing middle.
In resonator of the present invention, the sheet metal is circle, annular, rectangle, cuts at least one jiao
Rectangle or triangle.
In resonator of the present invention, the dielectric-slab of the paster antenna, the material of sheet metal are surpassed with described respectively
The substrate of sheet of material, man-made microstructure material it is identical.
In resonator of the present invention, the resonant frequency phase of the frequency of the paster antenna and the Meta Materials block
When.
Implement the resonator of the present invention, have the advantages that：Using the resonator of the present invention, by arranging with height
The Meta Materials block of dielectric constant, can reduce the resonant frequency of resonator；By the coupled patch between input, output,
Coupling performance can be improved, so as to by signal expeditiously from input introduction chamber, then signal expeditiously from output end
Everywhere, so improve wave filter performance.
Description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing：
Fig. 1 is the structural representation of the resonator of the preferred embodiment of the present invention；
Fig. 2 is the front view of the sheet metal of paster antenna in Fig. 1；
Fig. 3 is the front view of the sheet metal of another embodiment；
Fig. 4 is the S11 analogous diagrams of the paster antenna in Fig. 1；
Fig. 5 is the analogous diagram of resonator shown in Fig. 1.
Specific embodiment
The present invention relates to a kind of resonator, as shown in figure 1, including housing, input, output end, Meta Materials block and paster
Antenna.
Housing 1 is generally made of copper, with square inner chamber 1.Chamber lid is provided with above housing, and inner chamber 1 is closed into into one
Individual independent cavity.On the 1 side wall of inner chamber of chamber lid, two parallel sidewall surfaces are each provided with a patch wherein
Chip antenna.Meta Materials block is located between two paster antennas, feature of the one aspect of the present invention using the high-k of Meta Materials block
To reduce the resonant frequency of resonator, on the other hand using paster antenna come the coupling between improving Meta Materials block and input, exporting
Effect is closed, effectiveness is improved.
As shown in figure 1, Meta Materials block supports (not shown) by support and is located at the middle of housing cavity 1, its
Including at least one metamaterial sheet, when metamaterial sheet has it is multiple when, their front and rear surfaces fit with mechanically or physically
The modes such as fusion are fixedly attached together, it is also possible to link into an integrated entity at interval at a certain distance each other.Each super material
Tablet layer is put perpendicular to paster antenna.Metamaterial sheet is by substrate 4 and is attached on substrate 4 into many of periodic arrangement
What individual man-made microstructure 5 was constituted.Wherein, substrate 4 is used for providing attachment base bottom for man-made microstructure 5, generally by nonmetallic materials
Make, for example FR-4 materials, polytetrafluoroethylene (PTFE), epoxy resin, ceramics or SiO2.Man-made microstructure 5 is then by conductive material
Made by silk thread composition the structure with certain geometrical shape, such as I-shaped, " ten " font, split ring resonator shape etc.
Deng.Here conductive material is usually copper, silver, indium tin oxide etc..
In the present invention, the characteristic of the high-k of Meta Materials to be utilized reducing the resonant frequency of resonator, therefore, people
The design for making micro-structural 5 will can realize the requirement of high-k.First, the size of man-made microstructure 5 is right for resonant frequency
/ 10th to ten/5th of the electromagnetic wavelength answered or so, preferably 1/10th.When 5 rectangular array of man-made microstructure
During arrangement, it is understood that for arrangement line space and column pitch 1/10th or so of the wavelength, and man-made microstructure 5
Size meets the man-made microstructure 5 and can be contained in line space and column pitch as long and wide rectangular grid, and artificial micro-
The maximum outline of structure 5 can be close to the rectangular grid edge namely take substantially grid.As for the tool of man-made microstructure 5
Body size, can be according to the continuous small range adjustment of simulation result, until resonant frequency meets the requirement of resonator.
In addition, being put into Meta Materials block in resonator, you can reduce resonant frequency, but in order to frequency reducing effect becomes apparent from, people
The geometry for making micro-structural 5 can select planform obvious to electric field response, and such as I-shaped, including straight
First metal wire and it is connected to the first metal wire two ends and two second metal wires perpendicular to the first metal wire；Further
Derivative, man-made microstructure 5 can be to include being connected on the basis of I-shaped per root the second metal wire two ends and perpendicular to the
Four the 3rd metal wires of two metal wires, can also include being connected to per the 3rd metal wire two ends of root and perpendicular to the 3rd gold medal
Eight the 4th metal wires of category line.By that analogy, there can also be infinite derived structure.
Equally, the man-made microstructure 5 of Meta Materials block of the invention can also be the derivative of " ten " font, including being mutually perpendicular to
Constitute two first metal wires of " ten " word and be connected to per root the first metal wire two ends and perpendicular to first for being connected
Four second metal wires of metal wire, as shown in Figure 1；Further derive, man-made microstructure 5 can be with above-mentioned " ten " font
Include being connected to per root the second metal wire two ends and perpendicular to eight the 3rd of the second metal wire for being connected on the basis of derivative
Metal wire, may also include and be connected to per the 3rd metal wire two ends of root and the 4th metal of ten six roots of sensation perpendicular to the 3rd metal wire
Line.Further, by that analogy, infinite derived structure can be obtained.
Certainly, the man-made microstructure 5 of other shapes can also cause metamaterial sheet to have the effect of high index of refraction, so as to reality
The frequency reducing purpose of existing resonator.Therefore, man-made microstructure 5 of the invention is not limited in said structure form.
As Meta Materials block belongs to diverse medium with input, output, so if the both sides of Meta Materials block are direct
With input, output coupling, coupling performance and effect it is poor.In order to improve coupling performance, the present invention Meta Materials block and input,
Paster antenna is housed, as shown in Figure 1 between output.
The paster antenna of the present invention is circular polarized antenna, using any one circular polarized antenna of prior art.As schemed
1st, shown in Fig. 2, the paster antenna of the present invention includes dielectric-slab 2, the sheet metal 3 being attached in 2 one side of dielectric-slab and is arranged on being situated between
The coaxial line 6 of 2 another side of scutum.Dielectric-slab 2 is provided with the one side of coaxial line 6 and is fitted with 1 sidewall contact of inner chamber, so that housing is made
For the ground plane of paster antenna.Two coaxial lines 6 connect respectively as input, output end and outside input, output signal.This
The sheet metal 3 of embodiment cuts the shape of one jiao of formation for rectangle, naturally it is also possible to used by other conventional circular polarized antennas
The shape of metal patch corner fluting shape for example as shown in Figure 3.Certainly, paster antenna of the invention is except circular polarized antenna,
Linear polarized antenna can also be adopted.
In order to improve coupling performance, dielectric-slab 2 can be made using the 4 identical material of substrate with metamaterial sheet, example
As adopted FR-4 materials or polytetrafluoroethylene (PTFE).Equally, sheet metal 3 and man-made microstructure 5 may also be employed identical conduction material
Material is made, for example, adopt copper.Meanwhile, the frequency of paster antenna is preferably suitable with the resonant frequency of Meta Materials block, such as frequency
In an order of magnitude or on the adjacent order of magnitude.The paster antenna of sheet can connect such as Meta Materials block side surface directly contact
Connect, it is also possible to do not contact but apart from close.
Using the resonator of the present invention, by arranging the Meta Materials block with high-k, resonant frequency can be reduced；
By the coupled patch between input, output, it is possible to increase coupling performance, so as to signal is expeditiously led from input
Enter in chamber, then signal expeditiously from output end everywhere, and then improve wave filter performance.
For example, in the present embodiment, the resonator cavity that inner chamber is 20mm × 20mm × 20mm is taken, its resonant frequency is
10.59GHz；
Middle is put into Meta Materials block in the above-mentioned cavity, and the Meta Materials block includes 9 metamaterial sheets, each lamella
Substrate size is 10mm × 10mm × 1mm, and wherein the thickness of substrate is 1mm；Each metamaterial sheet surface attachment has 5 × 5 squares
The man-made microstructure of battle array arrangement, each micro-structural is shape as shown in Figure 1, and substrate is FR-4, and man-made microstructure is copper cash, is surveyed
The resonator with the Meta Materials block is obtained, its resonant frequency is 2.132GHz, be 3.24dB in the loss of resonant frequency, therefore phase
For cavity resonance frequency reduces 8.458GHz；
Further, paster antenna as shown in Figure 1, paster antenna are being set on cavity wall in the two of Meta Materials block both sides
Resonant frequency be illustrated in figure 4 2.165GHz, and add the resonator of paster antenna and Meta Materials block, as shown in figure 5, which is humorous
Vibration frequency is 2.17GHz, and the loss of resonant frequency is 0.18dB；As can be seen here, after adding paster antenna, resonant frequency is substantially not
Become, and being lost reduces 3.06dB.
Embodiments of the invention are described above in conjunction with accompanying drawing, but be the invention is not limited in above-mentioned concrete
Embodiment, above-mentioned specific embodiment are only schematic, rather than restricted, one of ordinary skill in the art
Under the enlightenment of the present invention, in the case of without departing from present inventive concept and scope of the claimed protection, can also make a lot
Form, these are belonged within the protection of the present invention.
Claims (8)
1. a kind of resonator, including the housing with inner chamber, it is characterised in that respectively connect on the opposite two side of the inner chamber
There is a paster antenna, be additionally provided with Meta Materials block between two paster antenna, the Meta Materials block includes at least one surpassing
Sheet of material, each described metamaterial sheet include substrate and are attached to multiple artificial micro- knot of periodic arrangement on the substrate
Structure, the man-made microstructure are the silk thread composition of conductive material with geometric structure,
Wherein, the paster antenna is circular polarized antenna, is pasted including on dielectric-slab made by nonmetallic materials and the dielectric-slab
Attached sheet metal, the dielectric-slab are fitted with the side wall wall of the inner chamber, make the housing become connecing for the paster antenna
Ground terminal.
2. resonator according to claim 1, it is characterised in that the sheet metal be located at the dielectric-slab towards housing
On an internal side surface.
3. resonator according to claim 1, it is characterised in that the sheet metal is rectangular metal sheet, and the rectangle
Open up the groove that the central point of oriented rectangle extends on four angles of sheet metal respectively.
4. resonator according to claim 1, it is characterised in that one face metal clad piece of the dielectric-slab, another side set
There is coaxial line, the coaxial line is electrically connected through the dielectric-slab with the sheet metal, and the resonator is with described two pasters
The coaxial line of antenna is respectively input, output end.
5. resonator according to claim 1, it is characterised in that the metamaterial sheet perpendicular to the paster antenna,
And the Meta Materials block is located at housing middle.
6. resonator according to claim 1, it is characterised in that the sheet metal is circle, annular, rectangle, cuts
At least one jiao of rectangle or triangle.
7. resonator according to claim 1, it is characterised in that the dielectric-slab of the paster antenna, the material of sheet metal
Substrate respectively with the metamaterial sheet, the material of man-made microstructure are identical.
8. resonator according to claim 1, it is characterised in that the frequency of the paster antenna and the Meta Materials block
Resonant frequency is suitable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210050165.0A CN103296369B (en) | 2012-02-29 | 2012-02-29 | Resonance cavity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210050165.0A CN103296369B (en) | 2012-02-29 | 2012-02-29 | Resonance cavity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103296369A CN103296369A (en) | 2013-09-11 |
| CN103296369B true CN103296369B (en) | 2017-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210050165.0A Active CN103296369B (en) | 2012-02-29 | 2012-02-29 | Resonance cavity |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105762530A (en) * | 2016-03-31 | 2016-07-13 | 深圳超级数据链技术有限公司 | Polarizer and resonant cavity |
| CN114899614B (en) * | 2022-05-11 | 2023-04-18 | 西南交通大学 | Metamaterial dual-frequency filtering antenna |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1945899A (en) * | 2006-10-26 | 2007-04-11 | 浙江大学 | Micro strip antenna |
| US7337528B2 (en) * | 2004-12-23 | 2008-03-04 | Motorola, Inc. | Textured dielectric patch antenna fabrication method |
| CN101626110A (en) * | 2008-07-11 | 2010-01-13 | 西北工业大学 | Novel C-band microstrip antenna with negative permeability material |
| CN101794934A (en) * | 2009-01-08 | 2010-08-04 | 奥迪康有限公司 | Miniature patch antenna |
-
2012
- 2012-02-29 CN CN201210050165.0A patent/CN103296369B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7337528B2 (en) * | 2004-12-23 | 2008-03-04 | Motorola, Inc. | Textured dielectric patch antenna fabrication method |
| CN1945899A (en) * | 2006-10-26 | 2007-04-11 | 浙江大学 | Micro strip antenna |
| CN101626110A (en) * | 2008-07-11 | 2010-01-13 | 西北工业大学 | Novel C-band microstrip antenna with negative permeability material |
| CN101794934A (en) * | 2009-01-08 | 2010-08-04 | 奥迪康有限公司 | Miniature patch antenna |
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| CN103296369A (en) | 2013-09-11 |
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Effective date of registration: 20210420 Address after: 518057 2 / F, software building, No.9, Gaoxin Middle Road, Nanshan District, Shenzhen, Guangdong Province Patentee after: KUANG-CHI INSTITUTE OF ADVANCED TECHNOLOGY Address before: 518034. A, 18B, CIC international business center, 1061 Mei Xiang Road, Shenzhen, Guangdong, Futian District Patentee before: KUANG-CHI INNOVATIVE TECHNOLOGY Ltd. |
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