DocumentCode :
1293314
Title :
A Bleustein-Gulyaev-Shimizu wave resonator having resonances for TV and VCR traps
Author :
Kadota, Michio ; Ago, Junya ; Horiuchi, Hideya
Author_Institution :
Murata Manuf. Co. Ltd., Nagaokakyo, Japan
Volume :
44
Issue :
12
fYear :
1996
fDate :
12/1/1996 12:00:00 AM
Firstpage :
2758
Lastpage :
2762
Abstract :
A Bleustein-Gulyaev-Shimizu (BGS) wave has only a shear horizontal (SH) wave showing a complete reflection at a free edge of a substrate. By utilizing this property, a small BGS resonator having one resonance without reflector electrodes is realized. In this paper, using the responses exited by a weighted interdigital transducer (IDT) and generated by the 2N±2th mode´s complete reflections at free edges of a ceramic substrate, we realized a new type of BGS resonator having resonances without reflector electrodes. This resonator showed sufficient trap attenuations for practical use at both adjacent picture carrier frequency (fap) and adjacent sound carrier one (fas) in the TV and VCR video intermediate frequency (VIF) circuit
Keywords :
VHF devices; crystal resonators; interdigital transducers; lead compounds; piezoceramics; television receivers; video tape recorders; 31.9 to 47.25 MHz; BGS resonator; Bleustein-Gulyaev-Shimizu wave resonator; PZT; PZT substrate; PbZrO3TiO3; TV IF circuit; TV traps; VCR traps; VCR video IF circuit; adjacent picture carrier frequency; adjacent sound carrier; ceramic substrate; interdigital transducer; intermediate frequency circuit; reflections; shear horizontal wave; trap attenuations; weighted IDT; Acoustic reflection; Attenuation; Ceramics; Circuits; Electrodes; Frequency; Resonance; TV; Transducers; Video recording;
fLanguage :
English
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9480
Type :
jour
DOI :
10.1109/22.554662
Filename :
554662
Link To Document :
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