Title :
Scattering and transmission matrix analysis of SAW resonator filters with long-pair IDTs and triple composite longitudinal modes on quartz
fDate :
Oct. 31 1994-Nov. 3 1994
Abstract :
This paper describes a technique for modeling the frequency response of a triple composite mode SAW resonator-filter on ST-quartz, with insertion loss less than 3 dB and fractional bandwidth >0.1 %. These temperature-stable filters with long-pair IDTs and thick-film metallization can find application in the UHF intermediate-frequency stages of mobile communications equipment such as the Personal Handy Phone. Scattering and transmission matrices are used here, in conjunction with a radiation conduction function, as distorted by the effects of IDT finger reflections
Keywords :
UHF filters; frequency response; interdigital transducers; mobile communication; quartz; surface acoustic wave resonator filters; Personal Handy Phone; SAW resonator filters; ST-quartz; SiO2; UHF intermediate-frequency stages; finger reflections; fractional bandwidth; frequency response; insertion loss; long-pair IDTs; mobile communications equipment; radiation conduction function; scattering matrices; temperature-stable filters; thick-film metallization; transmission matrix analysis; triple composite longitudinal modes; Interdigital transducers; Mobile communication; Quartz materials/devices; Surface acoustic wave resonator filters; UHF radio communication; UHF resonator filters;
Conference_Titel :
Ultrasonics Symposium, 1994. Proceedings., 1994 IEEE
Conference_Location :
Cannes, France
Print_ISBN :
0-7803-2012-3
DOI :
10.1109/ULTSYM.1994.401601
