Temperature compensated acoustic surface wave device

Details Temperature compensated acoustic surface wave device Temperature compensated acoustic surface wave device

1974-07-29

1976-04-20

Wilbur, Maynard R.

Wave transmission lines and networks

Coupling networks

With impedance matching

333 72, 310 89, 310 98, H03H 730

Patent

active

039522687

ABSTRACT:
A temperature compensated acoustic surface wave device, such as a surface wave delay line is provided in which temperature compensation is provided by the deposition of an interdigital electrode structure on a substrate with an overlay film surface of piezoelectric material of a predetermined thickness. A double substrate arrangement is also disclosed in which the interdigital electrode structure is deposited upon the surface of a non-piezo-electric layer which in turn is placed upon the surface of a piezoelectric substrate.

REFERENCES:
patent: 2540194 (1951-02-01), Ellett
patent: 3699482 (1972-10-01), Ash et al.
patent: 3701147 (1972-10-01), Whitehouse
patent: 3800247 (1974-03-01), Tancrell et al.

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