CN102157797A - Broadband high-gain flat-plate Vivaldi antenna - Google Patents
Broadband high-gain flat-plate Vivaldi antenna Download PDFInfo
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- CN102157797A CN102157797A CN2011100548629A CN201110054862A CN102157797A CN 102157797 A CN102157797 A CN 102157797A CN 2011100548629 A CN2011100548629 A CN 2011100548629A CN 201110054862 A CN201110054862 A CN 201110054862A CN 102157797 A CN102157797 A CN 102157797A
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- vivaldi antenna
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Abstract
The invention discloses a broadband high-gain flat-plate Vivaldi antenna. In the antenna, a medium substrate (2) is taken as a carrier; a copper foil (1) with a horn-shaped opening is coated on one plane of the medium substrate (2); gradient anisotropic zero-refractive index materials (3) formed by a series of bending line artificial units (4) with different arm lengths (my) are arranged at the horn-shaped opening; and a plurality of the gradient anisotropic zero-refractive index materials (3) are arranged on the two sides along a direction vertical to an antenna plane to form a multi-layer gradient anisotropic material. The multi-layer gradient anisotropic material can effectively improve the E-plane directing property and the gain of an original Vivaldi antenna, has a very obvious multi-layer effect, is simple to manufacture and convenient to operate, has absolute advantages compared with a conventional improved mode, and has very high application prospect in practice.
Description
Technical field
The present invention is a kind of antenna that is used for the microwave frequency band wide band high-gain, belongs to antenna and novel artificial electromagnetic material field.
Background technology
Novel artificial electromagnetic material (Metamaterials) among the present invention is a kind of electromagnetic material that can manually design, satisfy specific effective dielectric constant and magnetic permeability requirement.Through the development of more than ten years, the novel artificial electromagnetic material has obtained significant progress, all is widely used at aspects such as stealthy, antenna works.The Antonio Vivaldi antenna is the line of rabbet joint antenna of a kind of opening according to the index graded profile.Because it is made simply, volume is little, and is very wide with Time Bandwidth, so very wide application is arranged in actual engineering.But the directionality of this antenna is relatively poor.To the way before its direction-sense improvement is to form aerial array, adopt PBG substrate etc., but these modes all more complicated and cost are higher.Gradual change anisotropy zero refraction materials is because it has peculiar character and than the working band of broad, can with the organically combination of Antonio Vivaldi antenna, the directionality and the gain that in very wide frequency band, improve the Antonio Vivaldi antenna well.So the present invention has very high using value.
Summary of the invention
Technical problem:The purpose of this invention is to provide the dull and stereotyped Antonio Vivaldi antenna of a kind of wide band high-gain based on gradual change anisotropy zero refraction materials.This gradual change anisotropy zero refraction materials can improve the performance of Antonio Vivaldi antenna well in broad frequency band.Place along the electropolarized gradual change novel artificial of opening direction electromagnetic material at Antonio Vivaldi antenna aperture place, make its zero dielectric constant that on a plurality of frequencies of this direction, produces equivalence, thereby in the broadband, make antenna have high directionality and gain.Simultaneously, this antenna and novel artificial material have good amalgamation, easy to make, use simple, take up room for a short time, therefore have very high practical value.
Technical scheme:The dull and stereotyped Antonio Vivaldi antenna of wide band high-gain of the present invention is carrier with the medium substrate, be covered with opening on a plane of medium substrate and be trumpet-shaped Copper Foil, be provided with the gradual change anisotropy artificial electromagnetic material that the artificial unit of a series of different brachium sweeps constitutes at horn-like opening part.
Described gradual change anisotropy artificial electromagnetic material is a plurality of along placing perpendicular to antenna plane direction both sides, constitutes the gradual change anisotropic material of multilayer.
The brachium of the artificial unit of described sweep changes among a small circle, can make up dielectric constant and approach zero gradual change anisotropy zero refraction materials, improves the performance of Antonio Vivaldi antenna with this.
Described anisotropy zero refraction materials, in the frequency band of designed broad along opening direction (
xDirection) effective dielectric constant is zero or approaches zero that promptly the refractive index of this direction is zero or approaches zero.
Beneficial effect:Compared with prior art, advantage of the present invention:
1. the present invention makes simply, and is easy to process.The zero refraction materials of individual layer can be processed together with the Antonio Vivaldi antenna, multilayer also just which floor adds on this basis.Technology in the past (as forming modes such as aerial array, PBG substrate) complex operation, and cost an arm and a leg.
2. the present invention has broadband character.Gradual change zero refractive index can improve the bandwidth of operation of this zero refraction materials effectively, and then and the ultra broadband attribute of Antonio Vivaldi antenna itself combine well, improve antenna performance effectively.
3. the present invention possesses advantages such as portable, in light weight, easy integrated simultaneously.Gradual change anisotropy zero refraction materials and Antonio Vivaldi antenna all have these advantages, and both are in conjunction with having kept these advantages well.
Description of drawings
Fig. 1 is based on the Antonio Vivaldi antenna structure view of individual layer gradual change anisotropy zero refraction materials.The zero refraction materials of gradual change and original Antonio Vivaldi antenna have been placed on the same substrate.Opening part place along opening direction (
xDirection) the zero refraction materials of the differently curved line unit of gradual change formation.
Fig. 2 is based on the Antonio Vivaldi antenna structure view of multilayer gradual change anisotropy zero refraction materials.On the basis of Fig. 1, along placing a plurality of perpendicular to the antenna plane both sides and similarly this zero refractive material of gradual change anisotropic material 3.
Fig. 3 is the sweep construction unit that uses among the present invention.Gradual change anisotropic material 3 is exactly by many this different brachiums
Constitute.
Fig. 4 is the effective dielectric constant of sweep elementary cell of the present invention, wherein
For
xEffective dielectric constant on the direction.When
=2.7mm, when 2.4mm and 2.1mm,
At 10GHz, 10.8GHz and 11.85GHz equal zero respectively.
Absolute value can obtain 9.5GHz less than 0.2 o'clock---the bandwidth of operation of 12.5GHz.
Fig. 5～Fig. 9 is original Antonio Vivaldi antenna, based on the E face directional pattern of the Antonio Vivaldi antenna of individual layer gradual change zero refraction materials and multilayer gradual change zero refraction materials.Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9 correspondence respectively are 9.5GHz, 10GHz, 10.5GHz, the improvement situation of directional diagram when 11.85GHz and 12.5GHz.
Have among the figure: Copper Foil 1, medium substrate 2, anisotropic material 3, the artificial unit 4 of sweep.
Embodiment
Along
xOpening direction, gradual change anisotropy zero refraction materials has the zero dielectric constant of multifrequency point equivalence,
yEffective dielectric constant on the direction is 1.By certain design, this anisotropic material can
xKeep impedance matching on the direction of propagation, making effective dielectric constant and refractive index simultaneously on multifrequency point is zero.This mode had both strengthened the directionality and the gain of wave beam, had reduced loss again.Original Antonio Vivaldi antenna has easy manufacturing, integrated, broadband, advantage such as portable.The two is combined, have very strong actual application value.(3) the unit brachium in
The edge
xDirection gradually changes, and improves bandwidth of operation effectively with this.
The present invention is made up of original Antonio Vivaldi antenna and gradual change anisotropy zero refraction materials.According to the working frequency range of antenna needs, the sweep unit of design gradual change makes it all have smaller effective dielectric constant in this frequency range.In conjunction with the Antonio Vivaldi antenna, except advantages such as the manufacturing that keeps original antenna is simple, portable, indexs such as the directionality of antenna, gain all improve a lot, and the effect of multilayer is more a lot of than will getting well of individual layer.Simultaneously, roll-off characteristic has improved the bandwidth of operation of antenna greatly.
This antenna is a carrier with medium substrate 2, is covered with opening on a plane of medium substrate 2 and is trumpet-shaped Copper Foil 1, is provided with a series of different brachiums at horn-like opening part
m y Gradual change anisotropy zero refraction materials 3 that the artificial unit 4 of sweep constitutes.Described gradual change anisotropy zero refraction materials 3 is a plurality of along placing perpendicular to antenna plane direction both sides, constitutes the gradual change anisotropic material of multilayer.
Experimental result shows that the Antonio Vivaldi antenna based on gradual change anisotropy zero refraction materials in 9.5GHz to 12.5GHz scope all has fine performance, and its directionality and gain all are significantly increased.Specific targets are as shown in the table.
| ? | 9.5 |
10 GHz | 10.5 GHz | 11.85 GHz | 12.5 GHz |
| Original Antonio Vivaldi | 9.9006 dB | 9.9183 dB | 10.1339 dB | 8.1108 dB | 7.9840 dB |
| The situation of individual layer | 12.1338 dB | 12.9883 dB | 12.8662 dB | 10.6977 dB | 9.2657 dB |
| The situation of multilayer | 12.9238 dB | 13.7635 dB | 13.9625 dB | 12.7683dB | 11.7303 dB |
The antenna gain of table 1 test
| Antenna type | 9.5 |
10 GHz | 10.5 GHz | 11.85 GHz | 12.5 GHz |
| Original Antonio Vivaldi | 40.5° | 48.4° | 48.7° | 55.8° | 54.6° |
| The situation of individual layer | 24° | 27° | 36° | 26.6° | 29.2° |
| The situation of multilayer | 24° | 23.2° | 26° | 18° | 17.6° |
The antenna half-power bandwidth of table 2 test
Claims (3)
1. the dull and stereotyped Antonio Vivaldi antenna of a wide band high-gain is characterized in that this antenna is a carrier with medium substrate (2), be covered with opening on a plane of medium substrate (2) and be trumpet-shaped Copper Foil (1), horn-like opening part be provided with a series of different brachiums (
) artificial zero refraction materials (3) of gradual change anisotropy that constitutes of the artificial unit of sweep (4).
2. the dull and stereotyped Antonio Vivaldi antenna of the wide band high-gain based on gradual change anisotropy zero refraction materials according to claim 1, it is characterized in that described gradual change anisotropy zero refraction materials (3) is a plurality of along placing perpendicular to antenna plane direction both sides, constitute the gradual change anisotropic material of multilayer.
3. the dull and stereotyped Antonio Vivaldi antenna of the wide band high-gain based on gradual change anisotropy zero refraction materials according to claim 1, it is characterized in that the artificial unit of described sweep (4) brachium (
) among a small circle, change, can make up dielectric constant and approach zero gradual change anisotropy zero refraction materials, improve the performance of Antonio Vivaldi antenna with this.
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| CN2011100548629A CN102157797A (en) | 2011-03-08 | 2011-03-08 | Broadband high-gain flat-plate Vivaldi antenna |
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| CN2011100548629A CN102157797A (en) | 2011-03-08 | 2011-03-08 | Broadband high-gain flat-plate Vivaldi antenna |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102419399A (en) * | 2011-09-06 | 2012-04-18 | 东南大学 | System for measuring directional diagram of Wi-Fi (Wireless Fidelity) waveband antenna |
| CN103326120A (en) * | 2013-07-03 | 2013-09-25 | 中国船舶重工集团公司第七二四研究所 | High gain broadband dielectric lens Vivaldi antenna |
| CN105514588A (en) * | 2016-02-01 | 2016-04-20 | 华东师范大学 | Multi-band broadband tapered slot-line antenna and orthorhombic dual-polarization broadband tapered slot-line antenna |
| CN108832274A (en) * | 2018-06-25 | 2018-11-16 | 苏州大学 | Electromagnetic wave energy collection device |
| CN110190393A (en) * | 2019-06-26 | 2019-08-30 | 南京邮电大学 | The high-gain tapered slot antenna of metal cylindrical lens load |
| CN110380195A (en) * | 2019-06-27 | 2019-10-25 | 中国航空工业集团公司雷华电子技术研究所 | A kind of 2-18GHz ultra wide band array antenna |
| CN111541030A (en) * | 2020-05-31 | 2020-08-14 | 广东省计量科学研究院（华南国家计量测试中心） | Broadband antipodal Vivaldi antenna of split ring director facing 5G |
| CN113381183A (en) * | 2021-06-10 | 2021-09-10 | 华南理工大学 | Anti-sufficient Vivaldi antenna based on artificial surface plasmon polariton |
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| WO2005013413A2 (en) * | 2003-07-29 | 2005-02-10 | Bae Systems Information And Electronic Systems Integration Inc. | Combined ultra wideband vivaldi notch/meander line loaded antenna |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102419399A (en) * | 2011-09-06 | 2012-04-18 | 东南大学 | System for measuring directional diagram of Wi-Fi (Wireless Fidelity) waveband antenna |
| CN103326120A (en) * | 2013-07-03 | 2013-09-25 | 中国船舶重工集团公司第七二四研究所 | High gain broadband dielectric lens Vivaldi antenna |
| CN103326120B (en) * | 2013-07-03 | 2016-05-18 | 中国船舶重工集团公司第七二四研究所 | High-gain broadband di-lens Vivaldi antenna |
| CN105514588A (en) * | 2016-02-01 | 2016-04-20 | 华东师范大学 | Multi-band broadband tapered slot-line antenna and orthorhombic dual-polarization broadband tapered slot-line antenna |
| CN105514588B (en) * | 2016-02-01 | 2018-08-24 | 华东师范大学 | Multiple frequency bands broadband tapered slot antenna and quadrature dualpolarized broadband tapered slot antenna |
| CN108832274A (en) * | 2018-06-25 | 2018-11-16 | 苏州大学 | Electromagnetic wave energy collection device |
| CN110190393A (en) * | 2019-06-26 | 2019-08-30 | 南京邮电大学 | The high-gain tapered slot antenna of metal cylindrical lens load |
| CN110190393B (en) * | 2019-06-26 | 2020-12-01 | 南京邮电大学 | High-gain gradient slot line antenna loaded by metal column lens |
| CN110380195A (en) * | 2019-06-27 | 2019-10-25 | 中国航空工业集团公司雷华电子技术研究所 | A kind of 2-18GHz ultra wide band array antenna |
| CN111541030A (en) * | 2020-05-31 | 2020-08-14 | 广东省计量科学研究院（华南国家计量测试中心） | Broadband antipodal Vivaldi antenna of split ring director facing 5G |
| CN111541030B (en) * | 2020-05-31 | 2020-12-18 | 广东省计量科学研究院（华南国家计量测试中心） | Broadband antipodal Vivaldi antenna of split ring director facing 5G |
| CN113381183A (en) * | 2021-06-10 | 2021-09-10 | 华南理工大学 | Anti-sufficient Vivaldi antenna based on artificial surface plasmon polariton |
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Application publication date: 20110817 |