Reconfigurable Leaky-Wave Antenna Based on Periodic Water Grating

被引：63

作者：

Hu, Zhenxin ^{[1
]}

Shen, Zhongxiang ^{[2
]}

Wu, Wen ^{[1
]}

机构：

[1] Nanjing Univ Sci & Technol, Sch Elect & Opt Engn, Nanjing 210094, Jiangsu, Peoples R China

[2] Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore

来源：

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2014年 / 13卷

关键词：

Dielectric grating; leaky-wave antenna; unidirectional surface-wave launcher; water antenna; SURFACE;

D O I：

10.1109/LAWP.2014.2298245

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 reconfigurable leaky-wave antenna using periodic water grating on the top of a grounded glass slab is presented in this letter. A probe-fed unidirectional surface-wave launcher is designed to feed the antenna. Two prototypes of the proposed antenna are fabricated and tested to demonstrate its radiation performance and tuning capability. Measured results of the first static antenna show that a maximum gain of 16 dB, a wide impedance bandwidth (vertical bar S-11 vertical bar < -10 dB) from 4.1 to 6.6 GHz (46.7%), and a large beam-scanning range over the impedance band from the back-fire to nearly broadside direction are obtained. Measured results of the second dynamic antenna show that the beam-pointing angle can be tuned from to -32 degrees to 18 degrees at 5.5 GHz, while the return loss maintains better than 10 dB.

引用

页码：134 / 137

页数：4

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