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Download fileWideband Reconfigurable Reflectarray based on Reflector-backed Second-order Bandpass Frequency Selective Surface
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posted on 2022-05-02, 15:19 authored by Huan LiHuan Li, Xiaokang QiXiaokang Qi, Tianyi zhou, Zhiwei Xu, Tayeb A. DenidniIn this communication, a wideband reconfigurable
reflectarray based on reflector-backed active second-order bandpass
frequency selective surface (FSS) is presented. The reflector is composed
of periodic short-circuited parallel plate waveguide (PPW) and the FSS
is composed of stacked non-resonant metallic elements separated by thin
dielectric substrates. By integrating microwave varactors in the
capacitive layers of FSS, more than 270
o continuous phase tunability is achieved within a factional bandwidth of 14%. A one-dimensional reflectarray prototype operating at C band is fabricated and measured. The experimental results show that it can achieve ±55
o beam scanning
coverage. Symmetric beam steering is observed due to the center-fed
configuration. With advantages of low cost and simple structure, the proposed reflectarray can be potentially used in wideband wireless communication and radar systems.