A Circularly Polarized High-Gain Antenna With Low RCS Over a Wideband Using Chessboard Polarization Conversion Metasurfaces

被引：217
作者：
Li, Kun [1 ]
Liu, Ying [1 ]
Jia, Yongtao [1 ]
Guo, Y. J. [2 ]
机构：
[1] Xidian Univ, Sci & Technol Antenna & Microwave Lab, Collaborat Innovat Ctr Informat Sensing & Underst, Xian 710071, Shaanxi, Peoples R China
[2] Univ Technol Sydney, Global Big Data Technol Ctr, Sydney, NSW 2007, Australia
来源：
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2017年 / 65卷 / 08期
基金：
中国国家自然科学基金;
关键词：
Chessboard polarization conversion metasurfaces(CPCM); circular polarization; high gain; radar cross section (RCS); REDUCTION;
D O I：
10.1109/TAP.2017.2710231
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A new approach for the gain enhancement and wideband radar cross section (RCS) reduction of an antenna based on the chessboard polarization conversion metasurfaces (CPCMs) is proposed. Compared with the previous low-RCS antennas, high gain and wideband low RCS of a circularly polarized (CP) antenna are achieved simultaneously. The proposed CPCM is the chessboard configuration of the polarization conversion metasurfaces (PCMs), which is made up of adjoining two-layer substrates with three metallic patterns. Low RCS is realized by 180 degrees (+/- 30 degrees) reflection phase variations between two neighboring PCMs. Gain enhancement is achieved by employing a Fabry-Perot cavity, which is constructed by the PCM and the ground of the antenna. The antenna with CPCM operating at the X-band, excited by a sequentially rotated feeding network, is fabricated and measured. Simulated and measured results show that the left-hand CP gain of the antenna with CPCM is at least 3 dB higher than that of the reference antenna from 8.5 to 9.5 GHz and the monostatic RCS is effectively reduced from 6 to 14 GHz.
引用
收藏
页码：4288 / 4292
页数：5
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