Thermally Tunable Frequency‐Selective Surface Based on VO2 Thin Film

Media type: E-Article
Title: Thermally Tunable Frequency‐Selective Surface Based on VO2 Thin Film
Contributor: Polozov, Viktor; Maklakov, Sergey S.; Maklakov, Sergey A.; Mishin, Alexey; Petrov, Dmitry; Baskov, Konstantin; Politiko, Alexey; Chistyaev, Vladimir; Semenenko, Vladimir; Kisel, Vladimir
Published: Wiley, 2020
Published in: physica status solidi (a)
Extent:
Language: English
DOI: 10.1002/pssa.202000452
ISSN: 1862-6300; 1862-6319
Keywords: Materials Chemistry ; Electrical and Electronic Engineering ; Surfaces, Coatings and Films ; Surfaces and Interfaces ; Condensed Matter Physics ; Electronic, Optical and Magnetic Materials
Abstract: <jats:sec><jats:label /><jats:p>An approach to a design of tunable frequency‐selective surfaces (FSSs) for radio frequency (RF) domain based on vanadium dioxide (VO<jats:sub>2</jats:sub>) thin films is proposed. As an example, a thermally tunable annular slot FSS with integrated VO<jats:sub>2</jats:sub> switchable elements for C‐band of the RF domain is described. Switching is based on abrupt change of conductivity of the VO<jats:sub>2</jats:sub> film, initiated by heating from room temperature to a temperature of the metal–insulator phase transition of 44 °C. A tuning mechanism of the FSS allows continuous change of frequency response from room temperature state, where the FSS acts as a band‐pass filter, to high‐temperature state, where the FSS works as a reflector. In the process of tuning, a reflection coefficient at a central frequency of the filter can be increased from −26.4 dB up to −2.2 dB. The proposed approach can be used for the design of tunable FSS for applications that allow thermal control of the frequency response.</jats:p></jats:sec>
Description: <jats:sec><jats:label /><jats:p>An approach to a design of tunable frequency‐selective surfaces (FSSs) for radio frequency (RF) domain based on vanadium dioxide (VO<jats:sub>2</jats:sub>) thin films is proposed. As an example, a thermally tunable annular slot FSS with integrated VO<jats:sub>2</jats:sub> switchable elements for C‐band of the RF domain is described. Switching is based on abrupt change of conductivity of the VO<jats:sub>2</jats:sub> film, initiated by heating from room temperature to a temperature of the metal–insulator phase transition of 44 °C. A tuning mechanism of the FSS allows continuous change of frequency response from room temperature state, where the FSS acts as a band‐pass filter, to high‐temperature state, where the FSS works as a reflector. In the process of tuning, a reflection coefficient at a central frequency of the filter can be increased from −26.4 dB up to −2.2 dB. The proposed approach can be used for the design of tunable FSS for applications that allow thermal control of the frequency response.</jats:p></jats:sec>
Footnote:

Search in field:

Recently searched for: