Elastic waveguide

Details Elastic waveguide Elastic waveguide

1976-11-26

1978-02-28

Smith, Alfred E.

Wave transmission lines and networks

Coupling networks

With impedance matching

310333, 310365, 333 71, H03H 900, H03H 926, H03H 930, H01L 4110

Patent

active

040770230

ABSTRACT:
Elastic waves are propagated in a waveguide comprising an elongate central core region and an outer cladding region, the cladding region having a larger bulk shear elastic wave velocity than the core region. Transducers at respective ends of the waveguide couple between electrical signals and "shear" mode elastic waves in which the principal particle displacement is substantially perpendicular to a plane passing through the central longitudinal axis of the core region. The cladding region is sufficiently thick to ensure that the particle displacement profile is substantially zero at its outer surface. The waveguide is mounted in a medium suitable to mechanically support it and to protect it against external mechanical shock.

REFERENCES:
patent: 3736532 (1973-05-01), Armenakas
patent: 3922622 (1975-11-01), Boyd et al.

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