A Single-Layer High-Efficiency Wideband Reflectarray Using Hybrid Design Approach

被引：57

作者：

Deng, Ruyuan ^{[1
]}

Xu, Shenheng ^{[1
]}

Yang, Fan ^{[1
]}

Li, Maokun ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Elect Engn, Beijing 100084, Peoples R China

来源：

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2017年 / 16卷

关键词：

Antenna; aperture efficiency; bandwidth; gain; reflectarray; wideband; BANDWIDTH;

D O I：

10.1109/LAWP.2016.2613882

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 Ku-band single-layer reflectarray (RA) antenna with high aperture efficiency in a wide frequency band is proposed. The reflectarray element is composed of double square loops and an inner square patch, which operates at two different phasing modes by properly adjusting its geometrical parameters. A hybrid design approach, which combines four commonly used wide-band RA design approaches-namely, the subwavelength spacing, multiresonance structures on an electrically thick layer, multitype elements, and the dual-frequency phase synthesis-is adopted to achieve the high-efficiency wideband performance. An offset RA prototype with a 400-mm circular aperture is designed, fabricated, and tested. The measured aperture efficiency is over 60% within the frequency band of interest (12.0-14.9 GHz, 21.6%), and the bandwidth of aperture efficiency over 40% is 29.0%. Well-defined measured radiation patterns within the frequency band of 11.5-15.5 GHz are also obtained, which further validate the excellent radiation performance of the proposed RA design.

引用

页码：884 / 887

页数：4

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