Oscillators – With device responsive to external physical condition
Patent
1980-05-12
1982-07-06
Krawczewicz, Stanley T.
Oscillators
With device responsive to external physical condition
331 37, 331 41, 331107A, 331176, G01N 2700, H03B 304, H03H 942
Patent
active
043385753
ABSTRACT:
An arrangement for temperature compensating transducers including two elastic surface wave oscillators whose frequencies are mixed to produce an output frequency that is a function of a parameter to be measured such as force, pressure or acceleration. A delay element such as a transmission line having a delay that is a function of temperature is inserted into the loop of at least one of the oscillators to balance oscillator frequency deviations resulting from temperature changes.
REFERENCES:
patent: 2935704 (1960-05-01), Gordon et al.
patent: 3355949 (1967-12-01), Elwood et al.
patent: 3889205 (1975-06-01), Mitchell
patent: 4272742 (1981-06-01), Lewis
"Thomson-CSF"
Krawczewicz Stanley T.
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