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首页> 外文期刊>AIP Advances >Ultra-wideband RCS reduction and gain enhancement of patterned-surface-based aperture coupling patch antenna with optimized arrangement method
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Ultra-wideband RCS reduction and gain enhancement of patterned-surface-based aperture coupling patch antenna with optimized arrangement method

机译：采用优化布置方法的基于图案表面的孔径耦合贴片天线的超宽带RCS降低和增益增强

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摘要

A patterned-surface-based aperture coupling patch antenna (ACPA) with ultra-wideband radar cross section reduction (RCSR) and gain enhancement is presented in this paper. Due to the air-filled gap structure of the ACPA, an air spacer is introduced to design double-layer patterned surface (PS), which broadens the RCSR bandwidth of ACPA. Moreover, to obtain better gain of antenna, the arrangement of PS is optimized based on its current distributions. Experimental results show that impedance matching of PS-based ACPA is preserved well and operation band is broadened slightly from 8.0 to 11.3 GHz. The boresight gain is enhanced from 7.5 to 11.5 GHz, with a peak gain enhancement of 4.1 dB at 9.7 GHz. Meanwhile, the PS-based ACPA possesses the ability of specular RCSR over the band 3.0-20.0 GHz for both polarizations. The 10-dB RCS reduction of the antenna is achieved almost from 5.5 to 17.0 GHz for normal incidence.
机译：本文提出了一种基于图案表面的孔径耦合贴片天线（ACPA），具有超宽带雷达横截面缩减（RCSR）和增益增强功能。由于ACPA的气隙结构，引入了空气垫片来设计双层图案化表面（PS），从而扩大了ACPA的RCSR带宽。而且，为了获得更好的天线增益，基于PS的电流分布来优化PS的布置。实验结果表明，基于PS的ACPA的阻抗匹配得到了很好的保留，并且工作频带从8.0 GHz略微拓宽了。视轴增益从7.5 GHz增强到11.5 GHz，在9.7 GHz时的峰值增益增强4.1 dB。同时，基于PS的ACPA具有针对两种极化在3.0-20.0 GHz频带上镜面反射RCSR的能力。垂直入射时，天线的RCS降低10 dB几乎达到5.5至17.0 GHz。

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