Title :
Analysis of the passband ripples in surface acoustic wave IIDT filters
Author :
Wen Liu ; Smith, P.M.
Author_Institution :
Dept. of Electr. & Comput. Eng., McMaster Univ., Hamilton, Ont., Canada
fDate :
5/1/1998 12:00:00 AM
Abstract :
A computer simulation, based on the quasistatic 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.
Keywords :
Green´s function methods; band-pass filters; interdigital transducers; surface acoustic wave filters; surface acoustic wave transducers; computer simulation; electrode interaction; interdigitated interdigital transducer filter; multiple-transit echo signal; passband ripple; quasistatic Green function model; surface acoustic wave IIDT filter; Acoustic transducers; Acoustic waves; Electrical capacitance tomography; Electrodes; Filters; Frequency; Metallization; Passband; Surface acoustic waves; Wideband;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
