Acoustic surface wave devices

Details Acoustic surface wave devices Acoustic surface wave devices

1974-10-10

1976-09-28

Borchelt, Archie R.

Wave transmission lines and networks

Coupling networks

With impedance matching

29 2535, 310 94, 310 95, 333 72, H03H 926, H03H 930, H03H 932, H01L 4118

Patent

active

039835154

ABSTRACT:
An acoustic surface wave device comprising a monocrystalline body of piezoelectric material having a launching and receiving transducer applied to a planar ASW propagation surface. The piezoelectric material and the orientation of the propagation surface and the axial propagation direction relative to the crystal axes are selected to provide zero piezoelectric coupling between the transducers and a longitudinal axial bulk wave and that one of the two shear axial bulk waves that has substantially no component of particle motion perpendicular to said propagation surface. A method of manufacturing the aforesaid ASW device is also disclosed.

REFERENCES:
patent: 3387233 (1968-06-01), Parker, Jr.
de Klerk - "Ultrasonic Transducers 3. Surface Wave Transducers," in Ultrasonics, Jan. 1971; pp. 35-38.

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