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Wideband Reconfigurable Reflectarray based on Reflector-backed Second-order Bandpass Frequency Selective Surface
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  • Huan Li ,
  • Xiaokang Qi ,
  • Tianyi zhou ,
  • Zhiwei Xu ,
  • Tayeb A. Denidni
Xiaokang Qi
Zhejiang University

Corresponding Author:[email protected]

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Tianyi zhou
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Zhiwei Xu
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Tayeb A. Denidni
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Abstract

In 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.
Dec 2022Published in IEEE Transactions on Antennas and Propagation volume 70 issue 12 on pages 12334-12339. 10.1109/TAP.2022.3209684