Closed-form solution for SPUDTs

Author

Danicki, Eugene J. ; Hickernell, Fred S. ; Mateescu, Irina

Author_Institution

Polish Acad. of Sci., Warsaw, Poland

fYear

2005

fDate

29-31 Aug. 2005

Abstract

Rigorous, full-field theory of single-phase interdigital transducers is presented and extended, by perturbation analysis, to account for the mechanical properties of strips. The theory and its resulting closed-form expressions are general and applicable to any narrow-band transducers; they are ready for use in engineering practice for designing and optimizing narrowband SAW filters. The derived equivalent scheme brings a simple method for evaluation of the electrical properties of aperiodic transducers with arbitrary voltages applied to the transducer fingers. Further generalization is discussed extending this spectral theory to any pseudo-surface waves and wide-band devices.

Keywords

interdigital transducers; surface acoustic wave filters; SPUDT; aperiodic transducers; electrical properties; narrow band transducers; narrowband SAW filters; perturbation analysis; pseudo-surface waves; single-phase interdigital transducers; spectral theory; wide band devices; Closed-form solution; Design engineering; Design optimization; Fingers; Mechanical factors; Narrowband; SAW filters; Strips; Transducers; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Frequency Control Symposium and Exposition, 2005. Proceedings of the 2005 IEEE International

Print_ISBN

0-7803-9053-9

Type

conf

DOI

10.1109/FREQ.2005.1573918

Filename

1573918