Title :
Characteristics of BGS wave resonators using ceramic substrates and their applications
Author :
Morozumi, Kazuhiko ; Kadota, Michio ; Hayashi, Seigo
Author_Institution :
Murata Manuf. Co. Ltd., Kyoto, Japan
Abstract :
We tackled the challenge of developing the commercially usable Bleustein-Gulyaev-Skimizu (BGS) wave resonators using piezoelectric ceramic substrates in the frequency range between 30 and 110 MHz. We developed two types of resonators (low Q type and high Q type). The low Q type BGS wave resonators have been evaluated as resonators for an additional trap and for an auto frequency tuning (AFT) in a video intermediate frequency (VIF) circuit of TV and VCRs, and as resonators for digital European cordless telephone (DECT) demodulator. The high Q type BGS wave resonators have been evaluated as resonators (75 MHz) for personal computer clocks. In these applications the BGS wave resonators exhibit excellent characteristics
Keywords :
Q-factor; demodulators; piezoceramics; surface acoustic wave resonators; timing; tuning; 30 to 110 MHz; 75 MHz; BGS wave resonators; Bleustein-Gulyaev-Skimizu wave resonators; DECT demodulator; PZT; PbZrO3TiO3; TV; VCR; auto frequency tuning; ceramic substrates; commercially usable resonators; digital European cordless telephone demodulator; high Q type; low Q type; personal computer clocks; piezoelectric ceramics; video IF circuit; Application software; Ceramics; Circuit optimization; Clocks; Demodulation; Frequency; Microcomputers; TV; Telephony; Video recording;
Conference_Titel :
Ultrasonics Symposium, 1996. Proceedings., 1996 IEEE
Conference_Location :
San Antonio, TX
Print_ISBN :
0-7803-3615-1
DOI :
10.1109/ULTSYM.1996.583802
