A single layer delay-lines based reflectarray for X-band applications

IEICE Electronics Express

Muhammad Farhan Shafique¹  Rashid Saleem²  Tayyab Shabbir²  Sabih Ur Rehman³ 

[1] Center for Advanced Studies in Telecommunication (CAST), COMSATS Institute of Information Technology;Department of Telecommunication Engineering, University of Engineering and Technology, Taxila;School of Computing and Mathematics, Charles Sturt University

关键词: reflectarray;    equivalent circuit modeling;    high gain;    phase range;   

DOI  :  10.1587/elex.14.20171150

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

This paper presents a single-layer delay-lines based reflectarray for X-band applications. The proposed design contains an octagonal-shaped patch with T-shape delay-lines. A phase range of 500° is realized by using T-shape delay-lines. A stable phase range is achieved for TE and TM modes at 0°, 15° and 30° incident angles. An equivalent circuit model is used to investigate the resonant property of the proposed reflectarray unit element. A 21 × 21 elements reflectarray is designed, fabricated and measured on an FR-4 substrate. The proposed design provides 1-dB gain bandwidth of 18.5% and 3-dB gain bandwidth of 30%. Measured gain of 26 dBi at 10 GHz with aperture efficiency of 65% is obtained. The proposed reflectarray configuration have side-lobe-levels less than −25 dB.

【 授权许可】

CC BY