Temperature stable surface acoustic wave and oscillator using th

Details Temperature stable surface acoustic wave and oscillator using th Temperature stable surface acoustic wave and oscillator using th

1975-10-31

1976-12-21

Grimm, Siegfried H.

Oscillators

Solid state active element oscillator

Significant distributed parameter resonator

310 98, 331176, 333 30R, 333 72, H03B 532, H03H 920, H03H 926

Patent

active

039991474

ABSTRACT:
A temperature stable surface acoustic wave device utilizing reflective gratings in a material such as Y-cut quartz having two propagation directions in which the temperature coefficients of delay are of opposite sign, the gratings reflecting the Rayleigh waves in the two propagation directions along suitable path lengths to provide a total linear zero temperature coefficient of delay. A temperature stable oscillator is formed by providing an amplifier in a feedback path from the output transducer to the input transducer of the surface acoustic wave device.

REFERENCES:
patent: 3568102 (1971-03-01), Tseng
patent: 3883831 (1975-05-01), Williamson et al.
patent: 3886484 (1975-05-01), Dias et al.
patent: 3889205 (1975-06-01), Mitchell

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