Equivalent circuit for VO{sub 2} phase change material film in reconfigurable frequency selective surfaces

We developed equivalent circuits of phase change materials based on vanadium dioxide (VO{sub 2}) thin films. These circuits are used to model VO{sub 2} thin films for reconfigurable frequency selective surfaces (FSSs). This is important as it provides a way for designing complex structures. A reconf...

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Bibliographic Details
Published in:Applied physics letters 2015-12, Vol.107 (25)
Main Authors: Sanphuang, Varittha, Ghalichechian, Nima, Nahar, Niru K., Volakis, John L.
Format: Article
Language:English
Subjects:
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
DESIGN
EQUIVALENT CIRCUITS
FILTERS
FREQUENCY RANGE
PHASE CHANGE MATERIALS
SURFACES
SWITCHES
THIN FILMS
TRANSMISSION
VANADIUM OXIDES
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Summary:We developed equivalent circuits of phase change materials based on vanadium dioxide (VO{sub 2}) thin films. These circuits are used to model VO{sub 2} thin 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{sub 2} 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.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4938468