Title :
28 GHz band bandpass filter using high Q dielectric resonators
Author :
Nishikawa, T. ; Tanaka, H. ; Utsumi, K. ; Ishikawa, Y. ; Wakino, K.
Author_Institution :
Murata Manuf. Co. Ltd., Kyoto, Japan
Abstract :
The high-Q dielectric ceramic Ba(Sn,Mg,Ta)O/sub 3/ was applied to a symmetrically circular filter of a novel configuration. Direct eigenmode expansion was applied to multipole bandpass filter design and was found to be effective for determination of the construction parameters. The overall size of the filter is 10 mm*10 mm*20 mm, and the volume is one fourth that of dielectric resonator filters of conventional parallel structure. The insertion loss of the filter is 0.74 dB at 190 MHz bandwidth, and attenuation is 33 dB at f/sub 0/+or-300 MHz. The filter is suitable for K-band communication equipment.<>
Keywords :
Q-factor; band-pass filters; barium compounds; ceramics; dielectric resonators; microwave filters; passive filters; 0.74 dB; 10 to 20 mm; 190 MHz; 28 GHz; 33 dB; BaSnO/sub 3/MgO/sub 3/TaO/sub 3/; K-band; SHF; eigenmode expansion; high Q dielectric resonators; insertion loss; multipole bandpass filter design; size; symmetrically circular filter; Band pass filters; Ceramics; Dielectric losses; Dielectric materials; Magnetic separation; Microwave filters; Millimeter wave communication; Millimeter wave technology; Resonator filters; Temperature;
Conference_Titel :
Microwave Symposium Digest, 1990., IEEE MTT-S International
Conference_Location :
Dallas, TX
DOI :
10.1109/MWSYM.1990.99558
