Sunday, 3 January 2016

Equivalent circuit for VO2 phase change material film in reconfigurable frequency selective surfaces


We developed equivalent circuits of phase change materials based on vanadium dioxide (VO) thin films. These circuits are used to model VOthin films for reconfigurable frequency selective surfaces (FSSs). This is important as it provides a way for designing complex structures. A reconfigurable FSS filter using VO ON/OFF switches is designed demonstrating −60 dB isolation between the states. This filter is used to provide the transmission and reflection responses of the FSS in the frequency range of 0.1–0.6 THz. The comparison between equivalent circuit and full-wave simulation shows excellent agreement.

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