Modal Analysis and Cut-Off Conditions of Multichannel Surface-Acoustic-Waveguide Structures

Giora Griffel, Gadi Golan, Shlomo Ruschin, Ady Seidman, Natan Croitoru

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Multichannel guides for surface acoustic waves can improve the efficiency of SAW devices significantly. Focusing, steering, and modulating the propagating acoustical modes can be achieved similarly to optical waveguided devices. A general formulation is presented for the analysis of the lateral waveguiding properties of Rayleigh modes in surfaces loaded with deposited strips of different materials. General expressions are obtained for the number of modes and cut-off conditions in these structures. As examples of applications a simple directional coupler and an electrically controlled coupler are proposed.

Original languageEnglish
Pages (from-to)503-510
Number of pages8
JournalIEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
Volume35
Issue number4
DOIs
StatePublished - Jul 1988

Funding

FundersFunder number
Ministry of Communications ROD Department

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