Transfer scattering matrix of non-uniform surface acoustic wave transducers

This paper is concerned with a general mathematical theory for finding the admittance matrix of a three-port non-uniform surface acoustic wave (SAW) network characterized by n unequal hybrid sections. The SAW interdigital transducer and its various circuit model representations are presented in some...

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Main Authors: N. C. Debnath, T. Roy
Format: Article
Language:English
Published: Wiley 1987-01-01
Series:International Journal of Mathematics and Mathematical Sciences
Subjects:
Online Access:http://dx.doi.org/10.1155/S0161171287000681
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author N. C. Debnath
T. Roy
author_facet N. C. Debnath
T. Roy
author_sort N. C. Debnath
collection DOAJ
description This paper is concerned with a general mathematical theory for finding the admittance matrix of a three-port non-uniform surface acoustic wave (SAW) network characterized by n unequal hybrid sections. The SAW interdigital transducer and its various circuit model representations are presented in some detail. The Transfer scattering matrix of a transducer consisting of N non-uniform sections modeled through the hybrid equivalent circuit is discussed. General expression of the scattering matrix elements for a N-section SAW network is included. Based upon hybrid equivalent circuit model of one electrode section, explicit formulas for the scattering and transfer scattering matrices of a SAW transducer are obtained. Expressions of the transfer scattering matrix elements for the N-section crossed-field and in-line model of SAW transducers are also derived as special cases. The matrix elements are computed in terms of complex frequency and thus allow for transient response determinations. It is shown that the general forms presented here for the matrix elements are suitable for the computer aided design of SAW transducers.
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spelling doaj-art-6c7a4c9a585b4e3abb3ff21d15c7bf002025-02-03T01:02:16ZengWileyInternational Journal of Mathematics and Mathematical Sciences0161-17121687-04251987-01-0110356358110.1155/S0161171287000681Transfer scattering matrix of non-uniform surface acoustic wave transducersN. C. Debnath0T. Roy1Department of Physics, Jadavpur University, Calcutta 700 032, IndiaDepartment of Physics, Jadavpur University, Calcutta 700 032, IndiaThis paper is concerned with a general mathematical theory for finding the admittance matrix of a three-port non-uniform surface acoustic wave (SAW) network characterized by n unequal hybrid sections. The SAW interdigital transducer and its various circuit model representations are presented in some detail. The Transfer scattering matrix of a transducer consisting of N non-uniform sections modeled through the hybrid equivalent circuit is discussed. General expression of the scattering matrix elements for a N-section SAW network is included. Based upon hybrid equivalent circuit model of one electrode section, explicit formulas for the scattering and transfer scattering matrices of a SAW transducer are obtained. Expressions of the transfer scattering matrix elements for the N-section crossed-field and in-line model of SAW transducers are also derived as special cases. The matrix elements are computed in terms of complex frequency and thus allow for transient response determinations. It is shown that the general forms presented here for the matrix elements are suitable for the computer aided design of SAW transducers.http://dx.doi.org/10.1155/S0161171287000681surface acoustic wavesinterdigital transducersscattering and transfer scattering matriceshybrid in-line and crossed-fleld models.
spellingShingle N. C. Debnath
T. Roy
Transfer scattering matrix of non-uniform surface acoustic wave transducers
International Journal of Mathematics and Mathematical Sciences
surface acoustic waves
interdigital transducers
scattering and transfer scattering matrices
hybrid in-line and crossed-fleld models.
title Transfer scattering matrix of non-uniform surface acoustic wave transducers
title_full Transfer scattering matrix of non-uniform surface acoustic wave transducers
title_fullStr Transfer scattering matrix of non-uniform surface acoustic wave transducers
title_full_unstemmed Transfer scattering matrix of non-uniform surface acoustic wave transducers
title_short Transfer scattering matrix of non-uniform surface acoustic wave transducers
title_sort transfer scattering matrix of non uniform surface acoustic wave transducers
topic surface acoustic waves
interdigital transducers
scattering and transfer scattering matrices
hybrid in-line and crossed-fleld models.
url http://dx.doi.org/10.1155/S0161171287000681
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