Title :
Ultra-Selective Constant-Bandwidth Electromechanically Tunable HTS Filters
Author :
Tsuzuki, Genichi ; Hernandez, Matthew ; Prophet, Eric M. ; Jimenez, Silverio ; Willemsen, Balam A.
Author_Institution :
Supercond. Technol., Santa Barbara, CA
Abstract :
We report a tuning from 770 MHz up to 930 MHz, which is about 20%, was demonstrated. Insertion loss was 0.7 dB at 770 MHz and 1.6 dB at 930 MHz. Coupling bandwidth was kept almost constant over the entire range. A novel filter configuration and tuning algorithm is proposed and demonstrated
Keywords :
UHF filters; high-temperature superconductors; resonator filters; superconducting filters; superconducting microwave devices; 0.7 dB; 1.6 dB; 770 to 930 MHz; coupling bandwidth; filter configuration; tunable HTS filters; tuning algorithm; ultra narrow band 3-pole tunable filter; ultra-selective constant-bandwidth HTS filters; Bandwidth; Couplings; Degradation; Frequency; High temperature superconductors; Insertion loss; Resonator filters; Superconducting filters; Tuners; Tuning; Cryogenic Electronics and Nanopositioning; HTS; Superconductor; Switch; Tunable Filter; Tuning;
Conference_Titel :
Microwave Symposium Digest, 2006. IEEE MTT-S International
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-9541-7
Electronic_ISBN :
0149-645X
DOI :
10.1109/MWSYM.2006.249727
