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Volume 11
Issue 24
10.3390/electronics11244099
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Article

Use of Thermochromic Properties of VO2 for Reconfigurable Frequency Selection

by
Qassim Abdullahi
1,*,
Adrian Dzipalski
2,
Clement Raguenes
1,
Nelson Sepulveda
3,
Gin Jose
4,
Atif Shanim
5,
George Goussetis
1,
Duncan Hand
2 and
Dimitris E. Anagnostou
1
1
Institute of Signals, Sensors and Systems, Heriot-Watt University, Edinburgh EH14 4AS, UK
2
Institute of Photonics and Quantum Sciences, Heriot-Watt University, Edinburgh EH14 4AS, UK
3
Department of Electrical and Computer Engineering, Michigan State University, East Lansing, MI 48824, USA
4
School of Chemical and Process Engineering, University of Leeds, Leeds LS2 9JT, UK
5
Electrical and Computer Engineering, King Abdullah University of Science and Technology, Thuwal 23955, Saudi Arabia
*
Author to whom correspondence should be addressed.
Electronics 2022, 11(24), 4099; https://doi.org/10.3390/electronics11244099
Submission received: 7 November 2022 / Revised: 29 November 2022 / Accepted: 5 December 2022 / Published: 9 December 2022
(This article belongs to the Special Issue Advances in Antennas, RFID and Metamaterials for 5G and Internet of Things (IoT) Application Areas)
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Abstract

The thermochromic nature of vanadium dioxide (VO2) has facilitated many promising applications for reconfigurable frequency selectivity. The phase-changing property of VO2 was used to realise a reconfigurable frequency-selective surface (FSS) capable of manipulating electromagnetic waves for different functionalities. Diffractive optical elements (DOE) are used for diffracting laser beams to form conductive FSS images on the VO2 wafer for frequency selectivity. The dipoles on the VO2 wafer generate a stop band response of 12 dB and 10 dB for unit cells of the single dipole and double dipole at 3.5 GHz, respectively. A 10 GHz FSS array is projected by DOE on the 2-inch VO2 wafer with a filtering effect of 13 dB at 9.5–10.5 GHz. This solution is used to design a radar cross-section (RCS) modification FSS with reflected waves of about 20 dB higher reflectivity in the backscattering direction than in the specular direction.
Keywords: frequency selective surfaces; reconfigurable components; vanadium dioxide frequency selective surfaces; reconfigurable components; vanadium dioxide

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MDPI and ACS Style

Abdullahi, Q.; Dzipalski, A.; Raguenes, C.; Sepulveda, N.; Jose, G.; Shanim, A.; Goussetis, G.; Hand, D.; Anagnostou, D.E. Use of Thermochromic Properties of VO2 for Reconfigurable Frequency Selection. Electronics 2022, 11, 4099. https://doi.org/10.3390/electronics11244099

AMA Style

Abdullahi Q, Dzipalski A, Raguenes C, Sepulveda N, Jose G, Shanim A, Goussetis G, Hand D, Anagnostou DE. Use of Thermochromic Properties of VO2 for Reconfigurable Frequency Selection. Electronics. 2022; 11(24):4099. https://doi.org/10.3390/electronics11244099

Chicago/Turabian Style

Abdullahi, Qassim, Adrian Dzipalski, Clement Raguenes, Nelson Sepulveda, Gin Jose, Atif Shanim, George Goussetis, Duncan Hand, and Dimitris E. Anagnostou. 2022. "Use of Thermochromic Properties of VO2 for Reconfigurable Frequency Selection" Electronics 11, no. 24: 4099. https://doi.org/10.3390/electronics11244099

APA Style

Abdullahi, Q., Dzipalski, A., Raguenes, C., Sepulveda, N., Jose, G., Shanim, A., Goussetis, G., Hand, D., & Anagnostou, D. E. (2022). Use of Thermochromic Properties of VO2 for Reconfigurable Frequency Selection. Electronics, 11(24), 4099. https://doi.org/10.3390/electronics11244099

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