Varactor-tunable frequency selective surface with an embedded bias network |
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Authors: | Lin Bao-Qin Qu Shao-Bo Tong Chuang-Ming Zhou Hang Zhang Heng-Yang and Li Wei |
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Affiliation: | ( a) Institute of Information and Navigation, Air Force Engineering University, Xi'an 710077, China b) Institute of Science, Air Force Engineering University, Xi ' an 710051, China) |
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Abstract: | A new technique for designing a varactor-tunable frequency selective surface (FSS) with an embedded bias network is proposed and experimentally verified. The proposed FSS is based on a square-ring slot FSS. The frequency tuning is achieved by inserting varactor diodes between the square mesh and each unattached square patch. The square mesh is divided into two parts for biasing the varactor diodes. Full-wave numerical simulations show that a wide tuning range can be achieved by changing the capacitances of these loaded varactors. Two homo-type samples using fixed lumped capacitors are fabricated and measured using a standard waveguide measurement setup. Excellent agreement between the measured and simulated results is demonstrated. |
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Keywords: | frequency selective surface varactor diodes embedded bias network |
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