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Equivalent Cirquit Model of an Interdigital Transducer

Urbańczyk M., Waltar Z., Jakubik W.

Molecular and Quantum Acoustics

2000

Vol. 21

301-310

Interdigital transducers generating surface acoustic waves have found numerous applications. The present paper deals with an equivalent model of a single interdigital transducer as well as an S AW fifter complying with the PSpice programme for the analysis of electronic systems. The suggested model makes tt possible to take into account such effects as interelectrode reflections, losses along the acoustic path and the electromagnetic coupling between the transducers. The obtained results of the analysis of an interdigital transducer comply with the results obtained basing on an admittance model and delta-function model. The final aim is to model an SAW oscillator.