Title :
Closed-form solution for SPUDTs
Author :
Danicki, Eugene J. ; Hickernell, Fred S. ; Mateescu, Irina
Author_Institution :
Polish Acad. of Sci., Warsaw, Poland
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;
Conference_Titel :
Frequency Control Symposium and Exposition, 2005. Proceedings of the 2005 IEEE International
Print_ISBN :
0-7803-9053-9
DOI :
10.1109/FREQ.2005.1573918
