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A low RCS wideband high gain CP slot antenna loaded with frequency selective surface
Journal of Electromagnetic Waves and Applications ( IF 1.3 ) Pub Date : 2020-05-02 , DOI: 10.1080/09205071.2020.1761459
Hridesh Kumar Verma 1 , Mithilesh Kumar 1 , R. S. Meena 1 , Satya P. Singh 2
Affiliation  

ABSTRACT In this paper, a compact wideband circularly polarized slot antenna consisting of two L-shaped resonators is proposed. The slot antenna is loaded with a band-stop frequency selective surface (FSS) reflector to improve the gain of the antenna and to reduce the profile of the antenna. The radiation and scattering characteristics of FSS loaded slot antenna are compared with the metallic reflector loaded slot antenna, and the proposed antenna shows improved impedance bandwidth of 1.75–2.65 GHz. The measured results show that the peak gain of the slot antenna with FSS is enhanced by 4 dB. The proposed antenna with FSS also exhibits 3-dB ARBW of 2.2–2.65 GHz, and the scattering performance shows an average RCS reduction of 7.34 dB is achieved by slot antenna with FSS as compared to slot antenna with metallic reflector with peak RCS reduction of 24 dB at 1.2 GHz.

中文翻译:

一种加载频率选择表面的低RCS宽带高增益CP缝隙天线

摘要 在本文中,提出了一种由两个 L 形谐振器组成的紧凑型宽带圆极化缝隙天线。缝隙天线装有带阻频率选择表面(FSS)反射器,以提高天线的增益并减小天线的轮廓。将 FSS 加载缝隙天线的辐射和散射特性与金属反射器加载缝隙天线进行比较,所提出的天线显示出 1.75–2.65 GHz 的改进阻抗带宽。实测结果表明,带FSS 的缝隙天线的峰值增益提高了4 dB。建议的具有 FSS 的天线还表现出 2.2-2.65 GHz 的 3-dB ARBW,散射性能显示平均 RCS 降低 7。
更新日期:2020-05-02
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