Acoustic ridge transversal filter

Details Acoustic ridge transversal filter Acoustic ridge transversal filter

1976-05-11

1977-10-25

Smith, Alfred E.

Wave transmission lines and networks

Automatically controlled systems

With control of equalizer and/or delay network

333 30R, 333 72, H03H 728, H03H 926, H03H 930, H03H 932

Patent

active

040558215

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: 3755761 (1973-08-01), Hartmann
Kallard -- "Acousto Surface Wave and Acousto-Optic Devices" Optosonic Press, New York 1971, pp. 31-40 & Title Page.
Lagasse et al. -- "Acoustic Surface Waveguides-Analysis and Assessment" in IEEE Trans. on Microwave Theory and Techniques, vol. Mt.-21, No. 4, Apr. 1973; pp. 225-235.

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