Title :
Reconfigurable terahertz frequency selective structures using vanadium dioxide
Author :
Vegesna, Subash ; Yanhan Zhu ; Yong Zhao ; Zhaoyang Fan ; Bernussi, Ayrton ; Saed, Mohammad
Author_Institution :
Electr. & Comput. Eng, Texas Tech Univ., Lubbock, TX, USA
Abstract :
Terahertz frequency selective surfaces with tunable characteristics are presented. Vanadium dioxide patches and metallic resonators were used. Vanadium dioxide behaves as an insulator at low temperatures and as a metal at high temperatures with transition temperature of ~ 68°C. Single to dual polarized bandpass FSS structure at 0.5 THz and tunable bandpass FSS structure were realized. We measured extinction ratio of 25 dB for the polarizer and 31% shift in the resonance frequency for the FSS.
Keywords :
band-pass filters; circuit resonance; circuit tuning; frequency selective surfaces; resonators; terahertz wave devices; vanadium compounds; extinction ratio; frequency 0.5 THz; metallic resonators; reconfigurable terahertz frequency selective structures; resonance frequency; single to dual polarized bandpass FSS structure; terahertz frequency selective surfaces; transition temperature; tunable bandpass FSS structure; tunable characteristics; vanadium dioxide patches; Frequency measurement; Frequency response; Frequency selective surfaces; Resonant frequency; Substrates; Temperature; Temperature measurement; Frequency selective surfaces; metal-insulator transition; polarizer; tunable terahertz filters; vanadium dioxide;
Conference_Titel :
Microwave Symposium Digest (IMS), 2013 IEEE MTT-S International
Conference_Location :
Seattle, WA
Print_ISBN :
978-1-4673-6177-4
DOI :
10.1109/MWSYM.2013.6697598
