基于宽带吸波体的低雷达散射截面平面印刷磁电偶极子天线设计

兰俊祥; 曹祥玉; 高军; 郑月军; 张晨

doi:10.11999/JEIT170721

基于宽带吸波体的低雷达散射截面平面印刷磁电偶极子天线设计

doi: 10.11999/JEIT170721

基金项目:

国家自然科学基金(61271100, 61471389, 61501494)，陕西省自然科学基金(2017JM6025)

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出版历程
- 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: 该文设计了一种工作于X波段的平面印刷磁电偶极子天线，并设计了一种加载集总电阻的宽入射角、极化不敏感、宽频带吸波体(WBMA)。当平面波垂直入射时，吸波体在7.2~12.6 GHz范围内的吸波率大于90%，入射角增加至45时仍能在X波段保持90％以上的吸波率。通过将WBMA加载在天线四周，实现了天线雷达散射截面(RCS)的大幅缩减。实测和仿真结果表明：不同极化波垂直入射时，天线单站RCS减缩3 dB带宽为6.6~14.4 GHz，最大减缩量达23.8 dB。中心频点10 GHz处，TE极化波照射时，双站RCS能实现90角域内的减缩，TM极化波照射时，在35角域内实现了减缩，同时天线辐射性能几乎保持不变。
- 磁电偶极子天线 /
- 雷达散射截面 /
- 宽带吸波体 /
- 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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参考文献(19)

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