Title :
High-Q Tl2CaBa2Cu2O8 high-Tc superconducting quasi-optical millimeter-wave bandpass filters working at 77 K
Author :
Zhang, Dawei ; Fetterman, H.R. ; Eddy, M.M. ; Nilsson, J.L. ; Forse, R.J.
Author_Institution :
Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA
fDate :
1/1/1994 12:00:00 AM
Abstract :
Tl2CaBa2Cu2O8 high-temperature superconducting thin films with Tc´s of over 100 K on LaAlO3 substrates were used to fabricate quasi-optical millimeter-wave bandpass filters. Q-factors of over 400 were achieved, at liquid nitrogen temperatures from these filters at W-band frequencies (75-110 GHz)
Keywords :
Q-factor; band-pass filters; barium compounds; calcium compounds; high-temperature superconductors; microwave filters; passive filters; superconducting microwave devices; superconducting thin films; superconducting transition temperature; thallium compounds; 75 to 110 GHz; 77 to 100 K; EHF; HTSC; LaAlO3; LaAlO3 substrates; MM-wave device; Q-factors; Tl2CaBa2Cu2O8; Tl2CaBa2Cu2O8-LaAlO 3; W-band frequencies; high-Q type; high-Tc superconductor; high-temperature superconductors; liquid N2 temperatures; millimeter-wave bandpass filters; quasi-optical filters; superconducting thin films; Band pass filters; Filtering; Frequency; Nitrogen; Optical filters; Q factor; Resonance; Superconducting filters; Superconducting microwave devices; Temperature;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
