Oscillators – With distributed parameter resonator – Parallel wire type
Patent
1985-03-27
1987-12-08
Grimm, Siegfried H.
Oscillators
With distributed parameter resonator
Parallel wire type
331176, H03B 518, H03L 102
Patent
active
047120789
ABSTRACT:
A digital compensation circuit for improving the temperature stability of dielectric resonator oscillators is disclosed. A temperature sensor indicates a measure of ambient temperature which is correlated with an amount of phase shift necessary to compensate for frequency drift in a dielectric resonator oscillator. The correlation is made using a correction table or correction function which is determined empirically in a calibration process. The necessary phase shift is then supplied via a voltage controlled phase shifter. This phase shifter is part of the RF oscillation loop which also includes an amplifier, directional coupler and dielectric resonator filter (including microstrip).
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Slobodnik et al., "16 GHz Dielectric Resonator Oscillator with Digital Temperature Compensation", Microwave Journal, Nov. 1984, pp. 155-166.
Lee et al., "Digital and Analog Frequency-Temperature Compensation of Dielectric Resonator Oscillators", 1984 IEEE MTT-S Digest, pp. 277-279.
Roberts George A.
Slobodnik, Jr. Andrew J.
Stiglitz Martin R.
Webster Richard T.
Auton William G.
Grimm Siegfried H.
Singer Donald J.
The United States of America as represented by the Secretary of
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