Title :
Tchebyscheff time-delay dielectric band-pass filter using Q control method of normal modes
Author :
Ishikawa, Y. ; Wakino, K. ; Takehara, K. ; Tanizaki, T. ; Nishikawa, T.
Author_Institution :
Murata Manuf. Co. Ltd., Kyoto, Japan
Abstract :
A Chebyshev time-delay three-pole bandpass filter has been developed in the 900-MHz band by using the Q control method of normal modes. The group delay ripple of the filter is 50 ns within the 300-kHz bandwidth. The size of the equipment is 482.0-mm wide*300.0-mm deep*132.6-mm high, and it can be put into a 19-in standard rack. This filter is expected to be applicable for channel filters used in digital cellular base stations.<>
Keywords :
band-pass filters; filtering and prediction theory; passive filters; waveguide components; 132.6 to 482 mm; 19 in; 19-in standard rack; 300 kHz; 900 MHz; Chebyshev filter; Q control method of normal modes; Tchebyscheff filter; bandwidth; channel filters; digital cellular base stations; group delay ripple; size; time-delay dielectric band-pass filter; time-delay three-pole bandpass filter; Band pass filters; Bandwidth; Base stations; Delay; Dielectrics; Digital filters; Equivalent circuits; Manufacturing; Resonator filters; Telephony;
Conference_Titel :
Microwave Symposium Digest, 1990., IEEE MTT-S International
Conference_Location :
Dallas, TX
DOI :
10.1109/MWSYM.1990.99539
