Title :
800 MHz high-power duplexer using TM dual mode dielectric resonators
Author :
Ishikawa, Y. ; Hattori, J. ; Andoh, M. ; Nishikawa, T.
Author_Institution :
Murata Manuf. Co. Ltd., Kyoto, Japan
Abstract :
A small-size, high-power duplexer in the 800-MHz band has been developed by using whole monoblock TM/sub 110/ dual-mode dielectric resonators. Insertion loss is less than 0.35 dB over a 20-MHz bandwidth in a TX filter and less than 0.47 dB over a 40-MHz bandwidth in a RX filter. Volume is less than 3000 cm/sup 3/, which corresponds to about 20% of the reentrant cavity resonator filter. This duplexer is useful for current and future cellular base stations.<>
Keywords :
band-pass filters; cellular radio; dielectric resonators; microwave filters; passive filters; radio equipment; 0.35 dB; 0.47 dB; 20 MHz; 40 MHz; 800 MHz; RX filter; TM dual mode; TM/sub 110/; TX filter; UHF; cellular base stations; dielectric resonators; high-power duplexer; mobile radio equipment; monoblock; Bandwidth; Base stations; Degradation; Dielectric constant; Dielectric losses; Dielectric materials; High K dielectric materials; High-K gate dielectrics; Resonant frequency; Resonator filters;
Conference_Titel :
Microwave Symposium Digest, 1992., IEEE MTT-S International
Conference_Location :
Albuquerque, NM, USA
Print_ISBN :
0-7803-0611-2
DOI :
10.1109/MWSYM.1992.188330
