CN102800915A - Mode-adjustable resonant cavity - Google Patents
Mode-adjustable resonant cavity Download PDFInfo
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- CN102800915A CN102800915A CN2011101799145A CN201110179914A CN102800915A CN 102800915 A CN102800915 A CN 102800915A CN 2011101799145 A CN2011101799145 A CN 2011101799145A CN 201110179914 A CN201110179914 A CN 201110179914A CN 102800915 A CN102800915 A CN 102800915A
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- 239000000463 material Substances 0.000 claims abstract description 73
- 238000000034 method Methods 0.000 claims abstract description 7
- 239000002184 metal Substances 0.000 claims description 15
- 229910052751 metal Inorganic materials 0.000 claims description 15
- 241000446313 Lamella Species 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 241001074085 Scophthalmus aquosus Species 0.000 claims description 3
- 229910010293 ceramic material Inorganic materials 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 238000005530 etching Methods 0.000 claims description 3
- 239000003302 ferromagnetic material Substances 0.000 claims description 3
- 238000001259 photo etching Methods 0.000 claims description 3
- 238000007747 plating Methods 0.000 claims description 3
- 229910000859 α-Fe Inorganic materials 0.000 claims description 3
- 230000005672 electromagnetic field Effects 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 3
- 230000037237 body shape Effects 0.000 abstract 1
- 230000005291 magnetic effect Effects 0.000 description 7
- 230000005684 electric field Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- -1 polytetrafluoroethylene Polymers 0.000 description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 238000005094 computer simulation Methods 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The invention discloses a mode-adjustable resonant cavity, which comprises a rectangular conductive wall and a metamaterial filled in the conductive wall. The metamaterial comprises a plurality of parallel sheet layers; and each sheet layer comprises a sheet base material and a plurality of artificial micro-structures arranged on the base material. The metamaterial is used as a filling material in the conductive wall, and is just like air; electromagnetic parameters in the metamaterial can be designed artificially, therefore, the resonant cavity with a complex cavity body shape in the prior art is formed by changing distribution of electromagnetic fields in the resonant cavity under the condition that the shape of the resonant cavity is not changed, the mode-adjustable resonant cavity is easy to process, and correspondingly cost can be greatly reduced.
Description
Technical field
The present invention relates to the communications field, more particularly, relate to the adjustable resonant cavity of a kind of pattern.
Background technology
Resonant cavity is the resonant element of under microwave frequency, working, resonant cavity be an arbitrary shape surround by conductive wall (or magnetic conducting wall), and can form the areas of dielectric of electromagnetic viscosimeter therein, it has the characteristic that stores electromagnetic energy and select the certain frequency signal.Electromagnetic pattern in the resonant cavity is called " pattern ", and pattern is by the shape of resonant cavity and the decision of medium wherein.For the centre is the resonant cavity of air, and its pattern is determined by the shape of resonant cavity basically.For example, for rectangular cavity, electromagnetic field distribution is the combination of some trigonometric functions.At present, in order to obtain some specific electromagnetic field distribution, need the cavity of processing special shape, and this is usually relatively more difficult, cost is very high.
Summary of the invention
Technical problem to be solved by this invention is, a kind of Design and Machining, adjustable resonant cavity of pattern that cost is low of being easy to is provided.
The technical solution adopted for the present invention to solve the technical problems is: the resonant cavity that a kind of pattern is adjustable; Said resonant cavity comprises rectangular conductive wall and is filled in the inner ultra material of conductive wall; Said ultra material comprises a plurality of lamellas that are parallel to each other, and each lamella comprises the base material of sheet and is arranged on a plurality of artificial micro-structural on the base material.
Further, said base material is divided into a plurality of identical base material unit, and each base material unit and the artificial micro-structural on it constitute a ultra material cell, and the length and width of each base material unit and high size all are not more than 1/5th of incident electromagnetic wave wavelength.
Further, said each base material unit is a cuboid.
Further, said each base material unit is a cube.
Further, the length of side of said each base material unit is 1/10th of an incident electromagnetic wave wavelength.
Further, said base material is made by ceramic material, macromolecular material, ferroelectric material, ferrite material or ferromagnetic material.
Further, said artificial micro-structural for through etching, plating, brill quarter, photoetching, electronics is carved or the method at ion quarter attached to the metal wire on the base material.
Further, said artificial micro-structural is " worker " font metal wire structure.
Further, said artificial micro-structural is a plane flakes metal wire structure.
Further, said metal wire is copper cash or silver-colored line.
The present invention utilizes the filler of ultra material as conductive wall inside; Be comparable to air, the design that the electromagnetic parameter of ultra material internal can be artificial is therefore under the situation that does not change the resonant cavity shape; Through changing wherein electromagnetic field distribution; Realize the resonant cavity of cavity geometry complicated in the prior art, therefore processing is more prone to, and corresponding cost also can significantly reduce.
Description of drawings
Fig. 1 is the structural representation of the adjustable resonant cavity of pattern of the present invention;
Fig. 2 is the structural representation of ultra material of the present invention;
Fig. 3 is ultra material cell structural representation;
Fig. 4 is the sketch map of " worker " font metal wire structure;
Fig. 5 is the sketch map of the alabastrine metal wire structure in plane.
Embodiment
Shown in Fig. 1 to 3; The invention provides the adjustable resonant cavity of a kind of pattern 10; The ultra material 1 that said resonant cavity 10 comprises rectangular conductive wall 2 and is filled in conductive wall 2 inside; Ultra material 1 is closed in the inside of conductive wall 1, and said ultra material 1 comprises a plurality of lamellas that are parallel to each other 11, and each lamella 11 comprises the base material 12 of sheet and is arranged on a plurality of artificial micro-structural 13 on the base material.Said base material 12 is divided into a plurality of identical base material unit 20, and each base material unit 20 and the artificial micro-structural on it 13 constitute a ultra material cell 30, and the length and width of each base material unit and high size all are not more than 1/5th of incident electromagnetic wave wavelength.Said each base material unit 30 is a cuboid.More preferably, said each base material unit 20 is a cube, and its length of side is 1/10th of an incident electromagnetic wave wavelength.Among the present invention, as shown in Figure 2, a plurality of lamellas are range upon range of along the length direction of resonant cavity.Should be noted that drawing dotted line among Fig. 2 is for the ease of describing ultra material cell, is not the lines of necessary being.
Ultra material can be to electric field or magnetic field, and perhaps both respond simultaneously.The DIELECTRIC CONSTANTS of ultra material is depended in the response of electric field, and the magnetic permeability μ of ultra material is depended in the response in magnetic field.Through to the DIELECTRIC CONSTANTS of ultra each ultra material cell of material and the accurate control of magnetic permeability μ, we can realize arrange arbitrarily (in the certain limit) of ultra material internal electromagnetic parameter.Therefore can be under the situation that does not change the resonant cavity shape; Through changing the intra electromagnetic field distribution; Realize the resonant cavity (for example circular resonant chamber) of cavity geometry complicated in the prior art, therefore processing is more prone to, and corresponding cost also can significantly reduce.
Among the present invention, said base material 11 is made by ceramic material, macromolecular material, ferroelectric material, ferrite material or ferromagnetic material etc.Macromolecular material is available to have polytetrafluoroethylene, epoxy resin, F4B composite material, FR-4 composite material etc.For example, can adopt the base material of polytetrafluoroethylene, the electrical insulating property of polytetrafluoroethylene is very good, therefore can not produce electromagnetic electric field and disturb, and have excellent chemical stability, corrosion resistance, long service life.
Among the present invention, said artificial micro-structural 13 is preferably through etching, plating, brill quarter, photoetching, electronics is carved or ion is carved method attached to the metal wire on the base material.
Among the present invention, said artificial micro-structural 13 can be the plane flakes metal wire structure shown in " worker " the font metal wire structure shown in Fig. 4 or Fig. 5.Above-mentioned two kinds of artificial micro-structurals all are the structures to electric field response.Also can be artificial micro-structural to magnetic responsiveness, for example, the split ring resonator metal wire structure that this area is commonly used.
Among the present invention, said metal wire is copper cash or silver-colored line.
Under the situation that the material of base material is selected, the electromagnetic parameter that can obtain ultra material internal through shape, design size and/or artificial micro-structural the arranging on base material of designing artificial micro-structural distributes.The electromagnetic parameter of ultra material internal distributes, and for example, can obtain through reverse computer simulation; At first required pattern according to resonant cavity, the electromagnetic parameter that calculates intra every bit (each ultra material cell) distributes (dielectric constant and magnetic permeability), the shape, the design size (having deposited multiple artificial micro-structural data in the computer in advance) that distribute and select corresponding artificial micro-structural according to the electromagnetic parameter of this every bit; Design to each point can be used the method for exhaustion; For example earlier selected artificial micro-structural with given shape is calculated electromagnetic parameter, the contrast that the result who obtains and we are wanted; Circulation repeatedly; Till the electromagnetic parameter that finds us to want,, then accomplished the parameter choosing of artificial micro-structural if found; If do not find, then change a kind of artificial micro-structural of shape, the circulation above repeating is till the electromagnetic parameter that finds us to want.If still do not find, then said process can not stop yet.That is to say the artificial micro-structural of the electromagnetic parameter that has only found our needs, program just can stop.Because this process is all accomplished by computer, therefore, seem complicated, can accomplish soon in fact.
Combine accompanying drawing that embodiments of the invention are described above; But the present invention 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 enlightenment of the present invention; Not breaking away under the scope situation that aim of the present invention and claim protect, also can make a lot of forms, these all belong within the protection of the present invention.
Claims (10)
1. resonant cavity that pattern is adjustable; It is characterized in that; The ultra material that said resonant cavity comprises rectangular conductive wall and is filled in conductive wall inside, said ultra material comprises a plurality of lamellas that are parallel to each other, each lamella comprises the base material of sheet and is arranged on a plurality of artificial micro-structural on the base material.
2. the adjustable resonant cavity of pattern according to claim 1; It is characterized in that; Said base material is divided into a plurality of identical base material unit; Each base material unit and the artificial micro-structural on it constitute a ultra material cell, and the length and width of each base material unit and high size all are not more than 1/5th of incident electromagnetic wave wavelength.
3. the adjustable resonant cavity of pattern according to claim 2 is characterized in that, said each base material unit is a cuboid.
4. the adjustable resonant cavity of pattern according to claim 2 is characterized in that, said each base material unit is a cube.
5. the adjustable resonant cavity of pattern according to claim 3 is characterized in that the length of side of said each base material unit is 1/10th of an incident electromagnetic wave wavelength.
6. the adjustable resonant cavity of pattern according to claim 1 is characterized in that said base material is made by ceramic material, macromolecular material, ferroelectric material, ferrite material or ferromagnetic material.
7. the adjustable resonant cavity of pattern according to claim 1 is characterized in that, said artificial micro-structural for through etching, plating, brill quarter, photoetching, electronics is carved or the method at ion quarter attached to the metal wire on the base material.
8. the adjustable resonant cavity of pattern according to claim 7 is characterized in that, said artificial micro-structural is " worker " font metal wire structure.
9. the adjustable resonant cavity of pattern according to claim 7 is characterized in that, said artificial micro-structural is a plane flakes metal wire structure.
10. according to any resonant cavity that described pattern is adjustable of claim 7 to 9, it is characterized in that said metal wire is copper cash or silver-colored line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101799145A CN102800915A (en) | 2011-06-30 | 2011-06-30 | Mode-adjustable resonant cavity |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101799145A CN102800915A (en) | 2011-06-30 | 2011-06-30 | Mode-adjustable resonant cavity |
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| CN102800915A true CN102800915A (en) | 2012-11-28 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104765008A (en) * | 2015-05-06 | 2015-07-08 | 西南应用磁学研究所 | Data processing method for improving effective line width measurement accuracy |
| CN111520300A (en) * | 2020-03-31 | 2020-08-11 | 中国空间技术研究院 | A Mass Lossless Electromagnetic Thrust Cavity Based on Uneven Distribution of Electromagnetic Field Energy |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1279654C (en) * | 2004-12-26 | 2006-10-11 | 浙江大学 | Method and resonator for constructing one-dimensional cavity resonance with left-handed medium and right-handed medium |
| CN100541906C (en) * | 2007-02-09 | 2009-09-16 | 哈尔滨工业大学 | Super-small resonant cavity |
| CN101587990A (en) * | 2009-07-01 | 2009-11-25 | 东南大学 | Broad band cylindrical lens antenna based on artificial electromagnetic materials |
| CN101826657A (en) * | 2009-03-06 | 2010-09-08 | 财团法人工业技术研究院 | Dual-polarized antenna structure, antenna housing and design method thereof |
-
2011
- 2011-06-30 CN CN2011101799145A patent/CN102800915A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1279654C (en) * | 2004-12-26 | 2006-10-11 | 浙江大学 | Method and resonator for constructing one-dimensional cavity resonance with left-handed medium and right-handed medium |
| CN100541906C (en) * | 2007-02-09 | 2009-09-16 | 哈尔滨工业大学 | Super-small resonant cavity |
| CN101826657A (en) * | 2009-03-06 | 2010-09-08 | 财团法人工业技术研究院 | Dual-polarized antenna structure, antenna housing and design method thereof |
| CN101587990A (en) * | 2009-07-01 | 2009-11-25 | 东南大学 | Broad band cylindrical lens antenna based on artificial electromagnetic materials |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104765008A (en) * | 2015-05-06 | 2015-07-08 | 西南应用磁学研究所 | Data processing method for improving effective line width measurement accuracy |
| CN111520300A (en) * | 2020-03-31 | 2020-08-11 | 中国空间技术研究院 | A Mass Lossless Electromagnetic Thrust Cavity Based on Uneven Distribution of Electromagnetic Field Energy |
| CN111520300B (en) * | 2020-03-31 | 2021-08-10 | 中国空间技术研究院 | Non-mass-loss electromagnetic thruster cavity based on electromagnetic field energy uneven distribution |
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Application publication date: 20121128 |