High-Gain Grating Antenna With Surface Wave Launcher Array

被引：17
|
作者：
Liu, Jin-Lin [1 ]
Su, Tao [1 ]
Liu, Zhao-Xuan [1 ]
机构：
[1] Xidian Univ, Sch Elect Engn, Natl Lab Sci & Technol Antennas & Microwaves, Xian 710071, Shaanxi, Peoples R China
来源：
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2018年 / 17卷 / 04期
基金：
中国国家自然科学基金;
关键词：
High gain; grating antenna; leaky-wave radiation; surface wave launcher (SWL) array;
D O I：
10.1109/LAWP.2018.2812918
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：
In this letter, a high-gain grating antenna operated at 11.5 GHz is presented. Planar surface wave launcher (SWL) array is adopted to feed the grating antenna. Compared with spherical-like waves generated by single SWL structure, SWL array generates planar-like waves, which can concentrate the energy. With SWL array as the launcher, metallic straight strips are employed to achieve leaky-wave radiation. By using the theory of miniaturization of grating, the length of strips is optimized. The peak gain of main beam is as high as 20.3 dBi. Theoretical and optimization process is given to explain the principle. An example is fabricated and measured. A good agreement between simulated and measured results evidently validates the proposed grating antenna.
引用
收藏
页码：706 / 709
页数：4
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