DocumentCode :
981288
Title :
A simple equivalent circuit for interdigital transducers based on the coupled-mode approach
Author :
Nakamura, Kiyoshi
Author_Institution :
Fac. of Eng., Tohoku Univ., Sendai, Japan
Volume :
40
Issue :
6
fYear :
1993
Firstpage :
763
Lastpage :
767
Abstract :
The coupled-mode approach is a powerful tool for analyzing surface acoustic wave (SAW) periodic structures such as reflectors and interdigital transducers. The relations among the terminal quantities at two acoustical ports and one electrical port of an interdigital transducer (IDT) are derived from coupled-mode equations. A simple distributed-parameter equivalent circuit representing the entire IDT is proposed. A few examples of applications of this equivalent circuit to analysis of SAW devices are presented.<>
Keywords :
equivalent circuits; piezoelectric transducers; surface acoustic wave devices; ultrasonic transducers; IDT; SAW device analysis; acoustical ports; coupled-mode equations; distributed-parameter equivalent circuit; electrical port; interdigital transducer; reflectors; surface acoustic wave periodic structure; terminal quantities; Acoustic transducers; Acoustic waves; Circuit analysis; Coupling circuits; Electrodes; Equations; Equivalent circuits; Periodic structures; Surface acoustic wave devices; Surface acoustic waves;
fLanguage :
English
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
Publisher :
ieee
ISSN :
0885-3010
Type :
jour
DOI :
10.1109/58.248221
Filename :
248221
Link To Document :
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