Analysis of the Passband Ripples in Surface Acoustic Wave IIDT Filters

Wen Liu and Peter M. Smith

Abstract A computer simulation, based on the quasi-static Green's function model, of the passband ripples in interdigitated interdigital transducer filters is presented. Multiple-transit echo signals and electrode interactions, under the condition of poorly matched external circuits, are included in the model. A variation on the IIDT structure that suppresses the ripples is proposed.

1998 IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control 45:862-865

© 1998, by The Institute of Electrical and Electronics Engineers, Inc. All rights reserved.

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