Title :
Intermodulation characteristics of high-power bandpass filter using dielectric rod resonators loaded in a high-Tc superconducting cylinder
Author :
Kobayashi, Yoshiyuki ; Sasaki, Motoharu ; Senju, T. ; Kasuga, Y. ; Haginuma, K.
Author_Institution :
Dept. of Electr. & Electron. Eng., Saitama Univ., Urawa, Japan
Abstract :
A narrow-bandwidth bandpass filter with a bandwidth of 36 MHz at a center frequency of 12 GHz, is constructed by orienting a pair of TM/sub 01/spl delta//-mode dielectric rod resonators in the center of a YBCO high-Tc superconducting bulk cylinder. The high-power and intermodulation characteristics of this filter is compared with those for a similar filter structure using a Cu cylinder in place of the YBCO cylinder. This filter realizes the low-loss characteristic below 0.2 dB upto 5 W, the high power-handling capability over 10 W and the third-order intermodulation intercept of 100 dBm at 77 K.<>
Keywords :
band-pass filters; dielectric resonators; high-temperature superconductors; intermodulation; losses; microwave filters; passive filters; resonator filters; superconducting microwave devices; 0.2 dB; 10 W; 12 GHz; 36 MHz; 5 W; 77 K; HTSC; SHF; TM/sub 01/spl delta//-mode; YBCO; YBaCuO; dielectric rod resonators; high power-handling capability; high-Tc superconducting cylinder; high-power bandpass filter; intermodulation characteristics; low-loss characteristic; narrow-bandwidth filter; Band pass filters; Bandwidth; Dielectric losses; Engine cylinders; Permittivity; Q factor; Superconducting filters; Surface resistance; Temperature dependence; Yttrium barium copper oxide;
Conference_Titel :
Microwave Symposium Digest, 1995., IEEE MTT-S International
Conference_Location :
Orlando, FL, USA
Print_ISBN :
0-7803-2581-8
DOI :
10.1109/MWSYM.1995.406003
