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Highly integrated VO2-based tunable antenna for millimeter-wave applications

Abstract : We report the concept of a frequency tunable antenna device operating in the millimeter wave frequency domain. The ability of the antenna to switch between two frequency states is achieved by the monolithic integration of a metal-insulator transition material (vanadium dioxide, VO2). The VO2 material is an insulator at room temperature but can be driven in a high conductivity metallic state when it is electrically activated using a continuous (DC) voltage. The antenna design is based on a slot antenna excited by a microstrip line having a length that can be conveniently varied using a VO2-based switch. Following the high-frequency VO2 material characterization, we present its monolithic integration in the device prototype along with the comparison between the measured and the simulated performances of the agile antenna. Thus, depending on the VO2 material state, the antenna device can be conveniently switched between 33 and 37 GHz operating frequency bands presenting stable radiation patterns with 5.28 dBi and 5.41 dBi maximum gains, respectively.
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Contributeur : Aurelian CRUNTEANU Connectez-vous pour contacter le contributeur
Soumis le : jeudi 18 mai 2017 - 16:36:24
Dernière modification le : vendredi 7 janvier 2022 - 03:48:50




Laure Huitema, Aurelian Crunteanu, Hang Wong, Eric Arnaud. Highly integrated VO2-based tunable antenna for millimeter-wave applications. Applied Physics Letters, American Institute of Physics, 2017, 110, pp.203501. ⟨10.1063/1.4983364⟩. ⟨hal-01524699⟩



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