Title :
Wideband terahertz reflectarrays with fixed/frequency-scanning beams
Author :
Shi-Wei Qu ; Wei-Wei Wu ; Kung Bo Ng ; Bao-Jie Chen ; Chi Hou Chan ; Pun, E.Y.B.
Author_Institution :
Sch. of Electron. Eng., Univ. of Electron. Sci. & Technol. of China (UESTC), Chengdu, China
Abstract :
As an alternative of parabolic reflectors, microstrip reflectarrays inherit their many merits as well as those of conventional antenna arrays. This work is focused on solving two problems of terahertz reflectarrays, i.e., narrow operating bandwidth and beam-scanning ability. Two reflectarrays are demonstrated based on the proposed novel single-layered elements with a linear phase delay and multi-frequency phase-matching method. An operating bandwidth of over 36% is achieved for the wideband design, and over 40% for the frequency-scanning design with beam scanning angle of -35 ~ -5°.
Keywords :
broadband antennas; microstrip antenna arrays; reflectarray antennas; terahertz wave devices; antenna arrays; beam scanning ability; fixed-frequency-scanning beams; frequency-scanning design; linear phase delay; microstrip reflectarrays; multifrequency phase-matching method; narrow operating bandwidth; single-layered elements; wideband design; wideband terahertz reflectarrays; Apertures; Feeds; Finite element analysis; Frequency conversion; Wideband; Wireless communication;
Conference_Titel :
General Assembly and Scientific Symposium (URSI GASS), 2014 XXXIth URSI
Conference_Location :
Beijing
DOI :
10.1109/URSIGASS.2014.6929158
