Temperature compensated acoustic surface wave device

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

1975-11-24

1977-07-12

Wilbur, Maynard R.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

333 72, 333 30R, G01S 728

Patent

active

040357759

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-piezoelectric layer which in turn is placed upon the surface of a piezoelectric substrate.

REFERENCES:
patent: 3766496 (1973-10-01), Whitehouse
patent: 3800247 (1974-03-01), Tancrell et al.

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