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

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

doi:10.1109/58.4188

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 journal › Article › peer-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 language	English
Pages (from-to)	503-510
Number of pages	8
Journal	IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
Volume	35
Issue number	4
DOIs	https://doi.org/10.1109/58.4188
State	Published - Jul 1988
Externally published	Yes

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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.",

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

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