Electrode structure with constant velocity and predetermined ref

Details Electrode structure with constant velocity and predetermined ref Electrode structure with constant velocity and predetermined ref

1990-04-19

1991-09-24

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310313D, 333154, H01L 4108

Patent

active

050516442

ABSTRACT:
An electrode structure for use with a surface acoustic wave resonator which has the same velocity as the transducers and gratings but no reflections; a second embodiment provides an electrode structure having a velocity equal to the velocity of the transducers and gratings but that has a coefficient of reflectivity that can be predetermined by varying the width of the electrodes in the electrode structure.

REFERENCES:
patent: 4162465 (1979-07-01), Hunsinger et al.
patent: 4616197 (1986-10-01), Wright
patent: 4635009 (1987-01-01), Ebata
patent: 4731595 (1988-03-01), Wright
patent: 4890369 (1990-01-01), Tanski
patent: 4965479 (1990-10-01), Elliott

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