A Dual-Layer T-Shaped Element for Broadband Circularly Polarized Reflectarray With Linearly Polarized Feed

被引：90

作者：

Ren, Li-Shi ^{[1
]}

Jiao, Yong-Chang ^{[1
]}

Li, Fan ^{[1
]}

Zhao, Jin-Juan ^{[1
]}

Zhao, Gang ^{[1
]}

机构：

[1] Xidian Univ, Natl Lab Antennas & Microwave Technol, Xian 710071, Peoples R China

来源：

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2011年 / 10卷

关键词：

Broadband; circular polarization; reflectarray; T-shaped; VARIABLE ROTATION ANGLES; MICROSTRIP REFLECTARRAY; COMBINATION; PATCHES; DESIGN; LINES;

D O I：

10.1109/LAWP.2011.2148090

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 novel dual-layer T-shaped element is presented for designing a circularly polarized (CP) reflectarray that converts the linearly polarized incident field of the feed into an outgoing circularly polarized field. Compared to the microstrip rectangle patch, the T-shaped one can show an almost linear behavior and a much larger phase variation range that exceeds 500 degrees with a low slope. Then, a prime-focus 81-element reflectarray with this type of element has been designed and implemented. The measured results show that the obtained 1-dB gain bandwidth and 3-dB axial-ratio bandwidth of the reflectarray with the T-shaped elements can reach as large as 20% and 28%, respectively.

引用

页码：407 / 410

页数：4

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