Title :
800 MHz band high-power bandpass filter using TM/sub 110/ mode dielectric resonators for cellular base stations
Author :
Nishikawa, T. ; Wakino, K. ; Hiratsuka, T. ; Ishsikawa, Y.
Author_Institution :
Murata Manuf. Co. Ltd., Kyoto, Japan
Abstract :
An 800-MHz-band high-power filter using TM/sub 110/-mode dielectric resonators with a 25-MHz bandwidth is described. This elliptic function, six-pole filter has low dissipation characteristics and excellent temperature stability. Under high-power operation, the changes of the filter characteristics are negligible. The size of the filter is 200*140*60 mm (1700 cm/sup 3/), about one-fifth the volume of conventional high-power filters.<>
Keywords :
band-pass filters; cellular radio; dielectric resonators; passive filters; radio equipment; radiofrequency filters; 25 MHz; 800 MHz; TM/sub 110/ mode; UHF; cellular base stations; compact design; dielectric resonators; elliptic function; high-power bandpass filter; low dissipation characteristics; mobile radio application; six-pole filter; temperature stability; Band pass filters; Base stations; Ceramics; Coupling circuits; Dielectric materials; Resonant frequency; Resonator filters; Stability; Temperature; Tuning;
Conference_Titel :
Microwave Symposium Digest, 1988., IEEE MTT-S International
Conference_Location :
New York, NY, USA
DOI :
10.1109/MWSYM.1988.22088
