Title :
Superconducting microstrip line band-pass filter for mobile applications
Author :
Kayano, H. ; Fuke, H. ; Aiga, F. ; Terashima, Y. ; Yoshino, H. ; Kato, R. ; Suzuki, Y.
Author_Institution :
Corporate R&D Center, Toshiba Corp., Japan
Abstract :
Two types of 2 GHz band superconducting microstrip line band-pass filters were developed: a 5-pole filter with good spurious and sharp skirt characteristics, and an electrically tunable filter. The 5-pole filter with center frequency of 1.95 GHz, insertion loss of 0.1 dB or less, 3 dB bandwidth of 25 MHz, transmission zeros on both sides of desirable band, and good spurious characteristic between 1 and 9 GHz was obtained. Also the tunable filter with a measured unloaded Q factor of 2100 and a frequency shift of approximately 15 MHz was obtained.
Keywords :
band-pass filters; microstrip filters; mobile radio; superconducting filters; superconducting microwave devices; 0.1 dB; 1.95 GHz; 25 MHz; mobile communication; superconducting microstrip line band-pass filter; Band pass filters; Bandwidth; Filtering theory; Frequency measurement; Insertion loss; Microstrip filters; Propagation losses; Q factor; Q measurement; Superconducting filters;
Conference_Titel :
Microwave Symposium Digest. 2000 IEEE MTT-S International
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-7803-5687-X
DOI :
10.1109/MWSYM.2000.863273
