A SAW resonator filter exploiting RMSCs

Author

Danicki, E.

Author_Institution

Polish Acad. of Sci., Warsaw, Poland

fYear

1994

fDate

1-3 Jun 1994

Firstpage

337

Lastpage

342

Abstract

Reversing multistrip couplers are applied as reflecting structures in the double channel SAW resonator filter. The reflection is purely electrical. Double channel operation of the resonator is advantageous for many reasons, one is that the resonator performance does not depend on the position of interdigital transducers in the cavity region, the feature that otherwise can be obtained by using much more complicated unidirectional transducers. The theory of RMSC is presented based on spectral analysis of the field in a general structure with nonidentical acoustic channels (as in RMSC beam compressor). Scattering matrix is derived. Final relations for SAW resonator filter are presented as well as some experimental results, including that obtained for “chirp” dispersive RMSC

Keywords

S-matrix theory; spectral analysis; strip line couplers; surface acoustic wave filters; RMSC beam compressor; SAW resonator filter; chirp RMSC; dispersive RMSC; double channel SAW resonator filter; double channel operation; interdigital transducers; nonidentical acoustic channels; reflecting structures; reversing multistrip couplers; scattering matrix; spectral analysis; unidirectional transducers; Acoustic transducers; Couplers; Dielectric substrates; Electric potential; Frequency; Reflection; Resonator filters; Strips; Surface acoustic waves; Surface waves;

fLanguage

English

Publisher

ieee

Conference_Titel

Frequency Control Symposium, 1994. 48th., Proceedings of the 1994 IEEE International

Conference_Location

Boston, MA

Print_ISBN

0-7803-1945-1

Type

conf

DOI

10.1109/FREQ.1994.398315

Filename

398315