CST – Computer Simulation Technology

Dual-Band Electronically Beam-Switched Antenna Using Slot Active Frequency Selective Surface

Title:
Dual-Band Electronically Beam-Switched Antenna Using Slot Active Frequency Selective Surface
Author(s):
Chao Gu, Benito Sanz Izquierdo, Steven Gao, John C. Batchelor, Edward A. Parker, Fan Qin, Gao Wei, JianzhouLi, and Jiadong Xu
Source:
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
Vol./Issue/Date:
Vol. 65, No. 3
Year:
2017
Page(s):
pp. 1393-1398
Keywords:
Dual-band antenna, electronically beam-steering antenna, frequency selective surface (FSS), reconfigurable antenna (RA)
Abstract:
This communication presents an a cylindrical active frequency selective surface (AFSS)-based electronically beam-switching antenna, which can operate at two different frequency bands. The antenna consists of a slot AFSS and an omnidirectional dual-band feed antenna. The p-i-n diodes of the AFSS can be switched on or off to reconfigure the AFSS as transparent or opaque to the incident electromagnetic waves, respectively. Thus, by controlling the dc bias voltages to different columns of p-i-n diodes, the directive beams of the antenna can be swept to cover the whole azimuth plane. To validate the design concept, the transmission coefficients of the active FSS sheet are experimentally examined. An antenna prototype operating at 2.5 and 5.3 GHz frequency bands is also fabricated and measured. Simulation and measurement results of the antenna are presented to verify the design principle. A comparison between this communication and other recent designs is provided. The antenna has advantages of low power, low cost, easy fabrication, and electronic beam switching covering a full 360° angular range.
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