Acoustic ridge interactive structure

Details Acoustic ridge interactive structure Acoustic ridge interactive structure

1976-05-12

1977-12-13

Smith, Alfred E.

Wave transmission lines and networks

Coupling networks

With impedance matching

310313, 310367, 332 52, 333 72, H03H 926, H03H 930, H03H 902, H01L 4104

Patent

active

040631982

ABSTRACT:
An improved acoustic waveguide structure which comprises a ridge waveguide disposed in a horizontal direction extending outwardly from a substrate. The horizontal orientation of the waveguide which is in the form of a ledge results in particle motion of the ledge predominantly normal to the substrate plane with the largest motion at the free edge of the ledge and almost no motion in the substrate, thereby permitting a plurality of such structures to be densely packed on a common substrate.

REFERENCES:
patent: 3760172 (1973-09-01), Quate
patent: 3931509 (1976-01-01), Otto
Davis et al--"Steering Acoustic Surface Waves by Nonlinear Mixing" in Applied Physics Letters, vol. 21, No. 7, Oct. 1, 1972; pp. 323-325.
Lagasse et al--"Acoustic Surface Waveguides-Analysis and Assessment" in IEEE Trans. on Microwave Theory and Techniques vol. MTT 21, Apr. 1973; pp. 225-235.
Mason et al--"Ridgeguides for Acoustic Surface Waves" in Electronics Letters, July 15, 1971, vol. 7, No. 14; pp. 395-397.
Luukkala et al--"Convolution and Time Inversion Using Parametric Interactions of Acoustic Surface Waves" in Appl. Phys. Lett. vol. 18, No. 9, May 1, 1971; pp. 393-394.

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