TY - JOUR
T1 - Modal Analysis and Cut-Off Conditions of Multichannel Surface-Acoustic-Waveguide Structures
AU - Griffel, Giora
AU - Golan, Gadi
AU - Ruschin, Shlomo
AU - Seidman, Ady
AU - Croitoru, Natan
PY - 1988/7
Y1 - 1988/7
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=0024035812&partnerID=8YFLogxK
U2 - 10.1109/58.4188
DO - 10.1109/58.4188
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AN - SCOPUS:0024035812
SN - 0885-3010
VL - 35
SP - 503
EP - 510
JO - IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
JF - IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
IS - 4
ER -