CN103022686A - Antenna housing - Google Patents
Antenna housing Download PDFInfo
- Publication number
- CN103022686A CN103022686A CN2011102833675A CN201110283367A CN103022686A CN 103022686 A CN103022686 A CN 103022686A CN 2011102833675 A CN2011102833675 A CN 2011102833675A CN 201110283367 A CN201110283367 A CN 201110283367A CN 103022686 A CN103022686 A CN 103022686A
- Authority
- CN
- China
- Prior art keywords
- super
- radome
- wave impedance
- air
- sheet
- 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.)
- Pending
Links
Images
Landscapes
- Details Of Aerials (AREA)
Abstract
The invention relates to an antenna housing for covering an antenna to protect the antenna, wherein the antenna housing is made of a metamaterial; the metamaterial comprises a plurality of metamaterial sheets superposed together; the wave impedances of two adjacent metamaterial sheets are the same basically; and the wave impedances of at least two metamaterial sheets contacting the air are basically equal to that of the air. Therefore, the thickness of the antenna housing is increased by superposing more metamaterial sheets; when the wave impedances of two adjacent metamaterial sheets are the same basically and the wave impedances of at least two metamaterial sheets contacting the air are basically equal to that of the air, the electromagnetic wave reflection can be reduced; and the antenna housing has high wave transmission rate. Thus, the withstand voltage property and the wave transmission rate of the antenna housing can be improved at the same time.
Description
Technical field
The present invention relates to antenna guard technology field, more particularly, relate to a kind of radome for the protection of antenna.
Background technology
At present; for useful life and its disguise of raising that prolongs radar antenna on the aircraft; all can establish a radome of being made by electromagnetic wave transparent material at the outer mask of radar antenna; protect so that radar antenna is put in the inner, can prevent that so also adverse circumstances are on impact and the interference of radar antenna operating state.And along with the flight Mach number of aircraft improves constantly, more and more higher requirement has been proposed for the withstand voltage properties of the radome that directly contacts with the external world, and the thickness that increases radome is effective ways that improve its withstand voltage properties.
On the other hand, because the existence of radome, electromagnetic wave need to penetrate radome and could be received by radar antenna.And electromagnetic wave is when spreading into another kind of medium from a kind of medium, except the part electromagnetic wave penetrates rear a kind of medium and the transmission, interface at them reflects some electromagnetic wave owing to the wave impedance of two media different (also being the wave impedance sudden change), thereby causes the loss of electromagnetic wave energy.For radar antenna, electromagnetic wave penetrates radome and two secondary reflections occurs up to I haven't seen you for ages, has a strong impact on the quality of the signal that radar antenna receives.By prior art as can be known, when the thickness of radome was roughly electromagnetic half-wavelength, electromagnetic reflection was less, penetrated radome and the electromagnetic wave that received by radar antenna is more, also was that the wave transparent rate of radome is higher.Although and the material of making radome generally all is the few electromagnetic wave transparent material of reflection,, be at the thickness that increases radome so that when it satisfies withstand voltage properties, can reduce undoubtedly the wave transparent rate of radome, affect radar antenna reception electromagnetic wave.Therefore, demand developing the Novel wave material for the manufacture of radome urgently, so that the thickness of radome increases, improve simultaneously the wave transparent rate of radome.
Summary of the invention
The technical problem to be solved in the present invention is, a kind of radome that had not only had preferred thickness but also had higher wave transparent rate is provided, and improves again its wave transparent ability when improving the withstand voltage properties of radome.
The technical solution adopted for the present invention to solve the technical problems is: a kind of radome; be used for cover and establish antenna with the protection antenna; described radome is made by super material; described super material comprises a plurality of super sheet of material that are superimposed; the wave impedance of per two adjacent super sheet of material is substantially equal, and the wave impedance of two super sheet of material that contact with air at least equates substantially with the wave impedance of air.
Preferably, the wave impedance of described two super sheet of material that contact with air at least equates substantially with 1.
Preferably, the relative dielectric constant of described two super sheet of material that contact with air at least equates substantially with its relative permeability separately.
Preferably, the wave impedance of each super sheet of material of described super material all equates substantially with the wave impedance of air.
Preferably, the wave impedance of each super sheet of material of described super material all equates substantially with 1.
Preferably, the relative dielectric constant of each super sheet of material of described super material all equates substantially with its relative permeability separately.
Preferably, the wave impedance of each super sheet of material of described super material all equates.
Preferably, describedly substantially equate to refer to equate with certain natural number and float at this natural number to be no more than this natural ± 10%.
Preferably, the super sheet of material from the super sheet of material that contacts with air to the centre, the wave impedance of the super sheet of material of each of described super material is by substantially equating to increase or reduce with the wave impedance of air.
Preferably, the relative dielectric constant of described super material is 6-7.
Radome of the present invention has following beneficial effect: radome uses the super material that is made of a plurality of super sheet of material that is superimposed to make, can increase by the more super sheet of material that superposes the thickness of radome, and the wave impedance of working as per two adjacent super sheet of material is substantially equal, and when the wave impedance of the super sheet of material that contacts with air at least equates substantially with the wave impedance of air, can reduce reflection of electromagnetic wave, make radome have higher wave transparent rate, thereby improve simultaneously withstand voltage properties and the wave transparent ability of radome.
Description of drawings
The invention will be further described below in conjunction with the drawings and the specific embodiments.
Fig. 1 is the schematic diagram of radome of the present invention when covering at an antenna.
Fig. 2 is the structural representation of the super material of part of the making radome that intercepts from Fig. 1.
Fig. 3 is the change curve of the electromagnetic wave of different frequency its relative dielectric constant when penetrating super material shown in Figure 2.
The name that each label is corresponding among the figure is called:
10 surpass material, 12 surpass sheet of material, 14 base materials, 16 artificial micro-structurals, 18 surpass material cell, 20 antennas
Embodiment
We know, super material is a kind ofly according to what the ad hoc fashion periodic arrangement consisted of electromagnetic wave to be had the artificial composite material of special electromagnetic response by artificial micro-structural in base material.At present, super material generally is formed by stacking along the direction perpendicular to sheet surfaces by a plurality of super sheet of material, and each super sheet of material comprises the artificial micro-structural with certain topological structure that is made of wire and the base material that adheres to for artificial micro-structural.Therefore, when making radome with super material, can allow the thickness of radome increase by increasing super sheet of material, to improve the withstand voltage properties of radome.And to reduce reflection of electromagnetic wave on the interface between radome and the air, and just need to eliminate material and the sudden change of the wave impedance between the air for the manufacture of radome, also, allow the wave impedance Z of the material of making radome and the wave impedance Z of air
0Substantially equal.Generally, wave impedance Z equals
, also be that the wave impedance Z of medium is relevant with relative permeability μ with its relative dielectric constant ε, and the relative dielectric constant ε of super material and relative permeability μ are determined by its artificial micro-structural.Like this, just can change by the artificial micro-structural of the super material of artificial design its relative dielectric constant ε and relative permeability μ, and make the wave impedance Z of super material and the wave impedance Z of air
0Substantially equal, when increasing, its thickness still has higher wave transparent rate to allow by the radome of super material manufacturing.
See also Fig. 1 and Fig. 2, radome of the present invention is made by super material 10, cover at antenna 20 around so that it is protected.Described super material 10 comprises the super sheet of material 12 that a plurality of edges are formed by stacking perpendicular to the direction of sheet surfaces, and each super sheet of material 12 comprises base material 14 and is attached to a plurality of artificial micro-structural 16 on the base material 14.Generally, with each artificial micro-structural 16 and accompanying base material 14 part people thereof for being defined as a super material cell 18, and the size of each super material cell 18 between the incident electromagnetic wave wavelength 1/5th to 1/10th between.So, described super material 10 just is similar to the crystal with lattice structure.
Described base material 14 can be any material, such as semi-conducting material commonly used at present, such as silicon, germanium, selenium simple substance, perhaps compounds such as GaAs, gallium phosphide, indium phosphide, cadmium sulfide, cadmium selenide, zinc telluridse, zinc sulphide, vulcanized lead, lead selenide, carborundum, silicon nitride, and any two or more the mixture in the above-mentioned material.Described artificial micro-structural 16 generally is made of wire, and it is attached on the described base material 14 by certain processing technology, such as etching, plating, brill quarter, photoetching, electronics carve, ion quarter etc.
The inside and outside both sides of radome of the present invention are air.We know, the relative dielectric constant of air and relative permeability all are slightly larger than 1, in the reality usually approximate value be 1, therefore by the formula of wave impedance:
Can get the wave impedance Z of air
0Be similar to 1.Like this, the wave impedance Z of described super material 10 should equate substantially with 1.And because described super material 10 comprises a plurality of super sheet of material 12 that is superimposed, therefore, we can allow the wave impedance Z of each super sheet of material 12 all when 1 equates substantially, and the wave impedance Z of described super material 10 just equates substantially with 1.
Each super sheet of material 12 comprises some super material cell 18 that matrix is arranged that are, according to the formula of wave impedance:
, will allow the relative dielectric constant ε of each super material cell 18 of each super sheet of material 12 substantially equate with its relative permeability μ.And because air is uniform dielectric, also be, the relative dielectric constant ε of airborne every bit is all identical with relative permeability μ, and as seen, we also can allow each super material cell 18 of each super sheet of material 12 have identical relative dielectric constant ε and identical relative permeability μ.So, just can be by computer simulation and emulation, design the topological structure of described artificial micro-structural 16, and its physical dimension modulated, utilize at last certain processing technology described base material 14 produce have emulation and topological structure and the described artificial micro-structural 16 of physical dimension, making relative dielectric constant ε and the relative permeability μ of each super material cell 18 all substantially equal, and each super material cell 18 of each super sheet of material 12 has identical relative dielectric constant ε and identical relative permeability μ.In addition, the wave impedance Z of each super sheet of material 12 both can equate, also can be unequal.Among Fig. 2 with evenly distributed and the artificial micro-structural of " I " font that physical dimension is identical as signal, the situation of arranging of the wave impedance Z that each super sheet of material 12 is described artificial micro-structural when 1 equates substantially, also namely, the relative dielectric constant ε of each super material cell 18 of each super sheet of material 12 and its relative permeability μ all equate and the situation when having respectively identical relative dielectric constant ε and identical relative permeability μ substantially.
In order to increase the thickness of radome of the present invention, we consist of described super material 10 at stackable more super sheet of material 12, to improve the withstand voltage properties of radome.
In other embodiments, the rule that the wave impedance Z of the super sheet of material 12 of each of described super material 10 can be certain changes, thereby makes described super material 10 form the super sheet of material structure of wave impedance Z gradual change.For example, the super sheet of material 12 from super sheet of material 12 beginning that contacts with air to the centre, its wave impedance Z by with the wave impedance Z of air
0(being similar to 1) equates to increase or reduce substantially.Wave impedance Z such as wantonly two of, described super material 10 adjacent super sheet of material 12 increases gradually or reduces gradually in equal difference ground each other.Certainly, also the constant super sheet of material 12 of one or more wave impedance Z can be set between the super sheet of material 12 of any two wave impedance Z gradual change, allow the wave impedance Z of each super sheet of material 12 of described super material 10 be ladder ground and increase or reduce.In addition, gradually changing of the wave impedance Z of corresponding super material cell 18 can be synchronous with other the gradually changing of wave impedance Z of corresponding super material cell 18 between each super sheet of material 12, also can be asynchronous.At this moment, just need to design respectively topological structure and the physical dimension of artificial micro-structural 16 of each super material cell 18 of each super sheet of material 12, with relative dielectric constant ε and the relative permeability μ that modulates each super material cell 18, thereby, allow the wave impedance Z of each super material cell 18 satisfy in advance design.
As from the foregoing, radome of the present invention is made by described super material 10, described super material 10 comprises a plurality of super sheet of material 12 that is superimposed, and each super sheet of material 12 comprises some super material cell 18 that are comprised of the counterpart of artificial micro-structural 16 and base material 14.By the more super sheet of material 12 that superposes, can increase the thickness of the radome of being made by described super material 10.And process the described artificial micro-structural 16 with different topology structure and physical dimension at the base material 14 of each super sheet of material 12, thereby change relative dielectric constant ε and the relative permeability μ of each the super material cell 18 on each super sheet of material 12, make the wave impedance Z of each super sheet of material 12 of described super material 10 substantially equal, the wave impedance Z of the super sheet of material 12 that contacts with air and the wave impedance Z of air
0(being similar to 1) is substantially equal, eliminated between air and the adjacent super sheet of material 12 and the middle in twos sudden change of the wave impedance Z between the adjacent super sheet of material 12, when reducing electromagnetic wave and inciding on the radome of being made by described super material 10 from air, when between each super sheet of material 12 of described super material 10, propagating and when transmiting described super material 10 and entering air owing to occuring to reflect and consume.Also namely, radome of the present invention has improved withstand voltage properties by increasing its thickness, and by allowing each super sheet of material 12 of described super material 10 and the wave impedance Z between the air be complementary, to reduce reflection, has improved its wave transparent ability.
In addition, as shown in Figure 3, when penetrating super material among Fig. 2 for the electromagnetic wave of different frequency, the curvilinear motion figure of its relative dielectric constant.As seen from the figure, when the electromagnetic wave of a lot of frequency ranges penetrated super material, super material all had lower relative dielectric constant.Also namely, the radome of being made by described super material 10 has good wideband effect.In the present embodiment, the relative dielectric constant ε of the super material that we choose≤10, preferred ε=6-7.
In the embodiment of radome of the present invention mentioned " substantially equal " refer to equate and the foundation floating that equates is moving is no more than ± 10%.
The above only is some embodiments of the present invention and/or embodiment, should not be construed as limiting the invention.For those skilled in the art, under the prerequisite that does not break away from basic thought of the present invention, can also make some distortion and improvement, such as, radome of the present invention is in the uniform dielectric that is used in such as air in above-mentioned embodiment.In addition; it also can be used in the non-uniform dielectric; at this moment; just the wave impedance of each super material cell of the super sheet of material of needs transference non-uniform dielectric contact all equates substantially with the wave impedance of non-uniform dielectric relevant position; the wave impedance of corresponding super material cell is substantially equal mutually on middle each super sheet of material; be as the criterion with the sudden change that wave impedance does not occur, and these distortion and improvement also should be considered as protection scope of the present invention.
Claims (10)
1. radome; be used for cover and establish antenna with the protection antenna; described radome is made by super material; described super material comprises a plurality of super sheet of material that are superimposed; the wave impedance of per two adjacent super sheet of material is substantially equal, and the wave impedance of two super sheet of material that contact with air at least equates substantially with the wave impedance of air.
2. radome according to claim 1 is characterized in that, the wave impedance of described two super sheet of material that contact with air at least equates substantially with 1.
3. radome according to claim 1 is characterized in that, the relative dielectric constant of described two super sheet of material that contact with air at least equates substantially with its relative permeability separately.
4. radome according to claim 1 is characterized in that, the wave impedance of the super sheet of material of each of described super material all equates substantially with the wave impedance of air.
5. radome according to claim 1 is characterized in that, the wave impedance of the super sheet of material of each of described super material all equates substantially with 1.
6. radome according to claim 1 is characterized in that, the relative dielectric constant of the super sheet of material of each of described super material all equates substantially with its relative permeability separately.
7. radome according to claim 1 is characterized in that, the super sheet of material from the super sheet of material that contacts with air to the centre, and the wave impedance of the super sheet of material of each of described super material is by substantially equating to increase or reduce with the wave impedance of air.
8. according to claim 4,5 or 6 described radomes, it is characterized in that, the wave impedance of the super sheet of material of each of described super material all equates.
9. each described radome in 7 according to claim 1 is characterized in that, described substantially equate to refer to equate and the foundation floating that equates is moving is no more than ± 10%.
10. radome according to claim 1 is characterized in that, the relative dielectric constant of described super material is 6-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102833675A CN103022686A (en) | 2011-09-22 | 2011-09-22 | Antenna housing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102833675A CN103022686A (en) | 2011-09-22 | 2011-09-22 | Antenna housing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103022686A true CN103022686A (en) | 2013-04-03 |
Family
ID=47970978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102833675A Pending CN103022686A (en) | 2011-09-22 | 2011-09-22 | Antenna housing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103022686A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104409849A (en) * | 2014-12-19 | 2015-03-11 | 大连理工大学 | Direction-controllable microwave antenna |
| CN104466385A (en) * | 2014-11-27 | 2015-03-25 | 张永超 | Novel antenna housing with high wave transmittance |
| CN104466386A (en) * | 2014-11-27 | 2015-03-25 | 张永超 | Low-loss metamaterial antenna housing |
| WO2020230694A1 (en) * | 2019-05-16 | 2020-11-19 | ソニー株式会社 | Mobile body |
| CN113471691A (en) * | 2021-06-30 | 2021-10-01 | 航天特种材料及工艺技术研究所 | W-band radome and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5017939A (en) * | 1989-09-26 | 1991-05-21 | Hughes Aircraft Company | Two layer matching dielectrics for radomes and lenses for wide angles of incidence |
| CN100334468C (en) * | 2004-05-21 | 2007-08-29 | 粟毅 | Impedance matching device for broad band impulse signal ground penetrating radar |
| WO2010021736A2 (en) * | 2008-08-22 | 2010-02-25 | Duke University | Metamaterials for surfaces and waveguides |
| US7889127B2 (en) * | 2008-09-22 | 2011-02-15 | The Boeing Company | Wide angle impedance matching using metamaterials in a phased array antenna system |
-
2011
- 2011-09-22 CN CN2011102833675A patent/CN103022686A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5017939A (en) * | 1989-09-26 | 1991-05-21 | Hughes Aircraft Company | Two layer matching dielectrics for radomes and lenses for wide angles of incidence |
| CN100334468C (en) * | 2004-05-21 | 2007-08-29 | 粟毅 | Impedance matching device for broad band impulse signal ground penetrating radar |
| WO2010021736A2 (en) * | 2008-08-22 | 2010-02-25 | Duke University | Metamaterials for surfaces and waveguides |
| US20100156573A1 (en) * | 2008-08-22 | 2010-06-24 | Duke University | Metamaterials for surfaces and waveguides |
| US7889127B2 (en) * | 2008-09-22 | 2011-02-15 | The Boeing Company | Wide angle impedance matching using metamaterials in a phased array antenna system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104466385A (en) * | 2014-11-27 | 2015-03-25 | 张永超 | Novel antenna housing with high wave transmittance |
| CN104466386A (en) * | 2014-11-27 | 2015-03-25 | 张永超 | Low-loss metamaterial antenna housing |
| CN104409849A (en) * | 2014-12-19 | 2015-03-11 | 大连理工大学 | Direction-controllable microwave antenna |
| WO2020230694A1 (en) * | 2019-05-16 | 2020-11-19 | ソニー株式会社 | Mobile body |
| CN113471691A (en) * | 2021-06-30 | 2021-10-01 | 航天特种材料及工艺技术研究所 | W-band radome and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110265780B (en) | Stealth antenna housing with medium-frequency broadband wave-transmitting, high-frequency and low-frequency polarization conversion | |
| Naser-Moghadasi et al. | UWB CPW-fed fractal patch antenna with band-notched function employing folded T-shaped element | |
| CN103022686A (en) | Antenna housing | |
| CN109586039B (en) | Inhale/pass through characteristic graphite alkene and select compound metamaterial periodic structure and antenna house frequently | |
| CN107317108B (en) | Radar radome absorber based on helical structure | |
| CN208970751U (en) | A kind of frequency-selective surfaces antenna house | |
| CN105655721A (en) | Double-waveband composite broadband wave absorbing material based on frequency selective surface | |
| CN203826561U (en) | Low-pass wave-transmitting metamaterial, antenna cover and antenna system | |
| Parchin et al. | Gain improvement of a UWB antenna using a single-layer FSS | |
| CN102769160B (en) | Dual-passband electromagnetic wave transparent material and radome thereof and antenna system | |
| CN103367911A (en) | Metamaterial base station antenna housing and antenna system | |
| CN104037504A (en) | Trumpet type low-profile broadband high-gain antenna | |
| Hua et al. | Wide-angle frequency selective surface with ultra-wideband response for aircraft stealth designs | |
| KR20090111103A (en) | Uni-Planar Antenna using CRLH structure | |
| CN103682614A (en) | Broadband wave-transmitting material, and antenna housing and antenna system thereof | |
| CN103296410A (en) | High-gain metamaterial antenna housing and antenna system | |
| Zhu et al. | High-performance, transparent and flexible antenna based on conductive nanocomposites | |
| CN102760963A (en) | Broadband wave-transmitting meta-material and antenna cover and antenna system with material | |
| Lee et al. | 60 GHz high-gain aperture-coupled microstrip antennas using soft-surface and stacked cavity on LTCC multilayer technology | |
| KR102272327B1 (en) | Meta material absorber for integrated mast and its manufacturing method | |
| Yadav et al. | A novel approach of triangular-circular fractal antenna | |
| Singh et al. | Effect of photonic band gap structure on planar antenna configuration | |
| Kumar et al. | Novel hybrid metamaterial to improve the performance of a beamforming antenna | |
| Biswas et al. | A polarization insensitive frequency selective surface with bandpass and bandstop response | |
| Ge et al. | Designing a partially reflective surface with increasing reflection phase for wide-band EBG resonator antennas |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130403 |