Oscillators – Automatic frequency stabilization using a phase or frequency... – Oscillator with distributed parameter-type discriminator
Patent
1978-11-17
1981-01-06
Grimm, Siegfried H.
Oscillators
Automatic frequency stabilization using a phase or frequency...
Oscillator with distributed parameter-type discriminator
331176, H03L 704
Patent
active
042439493
ABSTRACT:
An apparatus for frequency stabilizing a microstrip oscillator using an integrated diplexer as a frequency discriminator. The crossover frequency of the microstrip diplexer is used in a feedback arrangement to stabilize a millimeter-wave oscillator. The diplexer is coupled to the output of the oscillator and detects a shift from the desired oscillator output frequency. This shift in frequency is converted to a voltage for controlling the varactor tuning element of the oscillator to thereby return the oscillator to the desired operating frequency. Means are also provided for sensing a temperature change in the diplexer and for insuring that the oscillator output frequency is maintained at the desired frequency regardless of this temperature change.
REFERENCES:
patent: 2502456 (1950-04-01), Hansen et al.
IEE Standard Dictionary of Electrical and Electronics Terms, pp. 152-153, 72, Wiley-interscience.
B. Glance et al., "A discriminator microstrip oscillator", IEEE Transactions on Microwave Theory and Techniques, vol. MTT-24, No. 10, pp. 648-650, Oct. 1976.
Rubin David
Saul David L.
Fendelman Harvey
Grimm Siegfried H.
Johnston Ervin F.
Sciascia Richard S.
The United States of America as represented by the Secretary of
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