基于寬帶吸波體的低雷達散射截面平面印刷磁電偶極子天線設計

蘭俊祥; 曹祥玉; 高軍; 鄭月軍; 張晨

doi:10.11999/JEIT170721

基于寬帶吸波體的低雷達散射截面平面印刷磁電偶極子天線設計

doi: 10.11999/JEIT170721

基金項目:

國家自然科學基金(61271100, 61471389, 61501494)，陜西省自然科學基金(2017JM6025)

計量
- 文章訪問數(shù): 1209
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出版歷程
- 收稿日期: 2017-07-19
- 修回日期: 2017-12-21
- 刊出日期: 2018-05-19

Low Radar Cross Section of Planar Printed Magneto-electric Dipole Antenna Based on Wide-band Metamaterial Absorber

Funds:

The National Natural Science Foundation of China (61271100, 61471389, 61501494), The Natural Science Foundational of Shannxi Province (2017JM6025)

摘要

摘要: 該文設計了一種工作于X波段的平面印刷磁電偶極子天線，并設計了一種加載集總電阻的寬入射角、極化不敏感、寬頻帶吸波體(WBMA)。當平面波垂直入射時，吸波體在7.2~12.6 GHz范圍內(nèi)的吸波率大于90%，入射角增加至45時仍能在X波段保持90％以上的吸波率。通過將WBMA加載在天線四周，實現(xiàn)了天線雷達散射截面(RCS)的大幅縮減。實測和仿真結果表明：不同極化波垂直入射時，天線單站RCS減縮3 dB帶寬為6.6~14.4 GHz，最大減縮量達23.8 dB。中心頻點10 GHz處，TE極化波照射時，雙站RCS能實現(xiàn)90角域內(nèi)的減縮，TM極化波照射時，在35角域內(nèi)實現(xiàn)了減縮，同時天線輻射性能幾乎保持不變。
- 磁電偶極子天線 /
- 雷達散射截面 /
- 寬帶吸波體 /
- X波段
Abstract: A broadband planar printed Magneto-Electric (ME) dipole antenna and a Wide-Band Metamaterial Absorber (WBMA) with polarization-insensitive and wide-angle absorption are designed for X band application. The absorber exhibits absorptivity above 90% from 7.2 GHz to 12.6 GHz under normal incidence. When the incident angle increases to 45, the absorptivity is still above 90% at X band. By applying the absorber around the antenna, the RCS of antenna is reduced significantly. Simulated and experimental results show a monostatic RCS reduction above 3 dB from 7.2 GHz to 12.6 GHz, and the peak reduction is up to 23.8 dB under different polarized waves. At the center working frequency of 10 GHz, the bistatic RCS decreases significantly from-90 to +90 under TE polarized wave and from-35 to+35 under TM polarized wave while the radiation performance remains unchanged basically, which proves that the absorber has great absorptivity.
- Magneto-Electric (ME) dipole antenna /
- Rader Cross Section (RCS) /
- Wide-Band Metamaterial Absorber (WBMA) /
- X band

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參考文獻(19)

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