Title :
5-pole high-temperature superconducting bandpass filter at 12 GHz using high power TM010 mode of microstrip circular patch
Author :
Yeo, K.S.K. ; Lancaster, M.J. ; Hong, J.S.
Author_Institution :
Sch. of Electron. & Electr. Eng., Birmingham Univ., UK
Abstract :
This paper presents a five pole Chebyshev bandpass filter using high temperature superconducting (HTS) thin films which employed the symmetrical TM010 mode of a circular patch resonator. The filter is designed with centre frequency of 12 GHz with fractional bandwidth of 0.45%. The design is fabricated using double sided YBCO thin films on a sapphire wafer of size (0.33×22.5×39.0)mm 3. The achieved unloaded Q-factor of the resonators in the fabricated filter is about 6,500 giving the filter an insertion loss of about 0.8 dB at centre frequency of 12.14 GHz
Keywords :
Chebyshev filters; Q-factor; band-pass filters; barium compounds; high-temperature superconductors; microstrip filters; microstrip resonators; microwave filters; resonator filters; superconducting filters; superconducting microwave devices; superconducting resonators; superconducting thin films; yttrium compounds; 0.8 dB; 12 GHz; Q-factor; TM010 mode; YBCO; YBaCuO; centre frequency; five-pole Chebyshev bandpass filter; fractional bandwidth; high temperature superconducting thin film; insertion loss; microstrip circular patch resonator; sapphire substrate; Band pass filters; Bandwidth; Chebyshev approximation; Frequency; High temperature superconductors; Q factor; Resonator filters; Superconducting filters; Superconducting thin films; Yttrium barium copper oxide;
Conference_Titel :
Microwave Conference, 2000 Asia-Pacific
Conference_Location :
Sydney, NSW
Print_ISBN :
0-7803-6435-X
DOI :
10.1109/APMC.2000.925905
