Title :
Application of high Tc superconductors as frequency selective surfaces: experiment and theory
Author :
Zhang, Dawei ; Rahmat-samii, Yahya ; Fetterman, Harold R. ; Prakash, S. ; Bunshah, R.F. ; Eddy, M. ; Nilsson, J.L.
Author_Institution :
California Univ., Los Angeles, CA, USA
Abstract :
The use of YBa2Cu3O7-x and Tl2CaBa2Cu2O8 high-temperature superconducting thin films to fabricate frequency selective surfaces (FSS) at millimeter-wave frequencies (75-110 GHz) is discussed. An analytical/numerical model was applied, using a Floquet expansion and the method of moments, to analyze bandstop superconducting frequency selective surfaces. Experimental results were compared with the model, and showed agreement with resonant frequency prediction with an accuracy of better than 1%. The use of the superconducting frequency selective surfaces as quasi-optical millimeter-wave bandpass filters was also demonstrated
Keywords :
antenna theory; barium compounds; calcium compounds; high-temperature superconductors; superconducting microwave devices; superconducting thin films; thallium compounds; yttrium compounds; 75 to 110 GHz; EHF; Floquet expansion; Tl2CaBa2Cu2O8; YBa2Cu3O7-x; analytical/numerical model; bandstop FSS; frequency selective surfaces; high Tc superconductors; high-temperature superconducting thin films; method of moments; millimeter-wave frequencies; quasioptical MM-wave bandpass filters; resonant frequency prediction; Accuracy; Frequency selective surfaces; High temperature superconductors; Millimeter wave technology; Moment methods; Numerical models; Predictive models; Resonant frequency; Superconducting filters; Superconducting thin films;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
