A Wide-Angle and Circularly Polarized Beam-Scanning Antenna Based on Microstrip Spoof Surface Plasmon Polariton Transmission Line
A Wide-Angle and Circularly Polarized Beam-Scanning Antenna Based on Microstrip Spoof Surface Plasmon Polariton Transmission Line
复制标题
基于微带欺骗表面等离子体激元传输线的广角圆偏振波束扫描天线
DOI：
10.1109/lawp.2017.2731877
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发表时间：
2017-01-01
影响因子：
4.2
通讯作者：
Xiao, Ke
中科院分区：
文献类型：
--
作者：
Guan, Dong-Fang;You, Peng;Xiao, Ke
本文提出了一种具有圆极化特性的广角波束扫描天线。天线由两层组成。在底层引入微带欺骗表面等离子激元（SPP）作为慢波馈线。一系列圆形斑块被放置在顶层作为辐射元素。仿真和实测结果表明，通过在天线的辐射单元上引入摄动，提高了天线的波束扫描角度，提高了天线的CP波束扫描能力。在11-15 GHz工作频段，天线的扫描角测量范围为-32°~ +34°。在相应波束方向上，天线轴比（AR）小于3db，全频段增益大于12.8 dBi。它具有结构简单、制造成本低、宽波束导向和CP特性，在雷达和无线通信系统中具有潜在的应用前景。
In this letter, a wide-angle beam-scanning antenna with circular polarization (CP) characteristic is proposed. The antenna consists of two layers. Microstrip spoof surface plasmon polariton (SPP) is introduced on the bottom layer as a slow-wave feeding line. A series of circular patches are placed on the top layer as radiating elements. Simulated and measured results indicate that beam-scanning angle of the proposed antenna is improved and CP beam-scanning ability is obtained by introducing perturbation on the radiating elements. In the operating band of 11–15 GHz, measured scanning angle of the fabricated antenna is from –32° to +34°. The antenna axial ratio (AR) is below 3 dB at the corresponding beam direction, and gain is above 12.8 dBi over the whole band. It has potential applications in radar and wireless communication systems for simple structure, low-cost fabrication, wide beam-steering, and CP properties.