Multifrequency microwave source

Details Multifrequency microwave source Multifrequency microwave source

1983-07-05

1986-10-07

Tubbesing, T. H.

Oscillators

Automatic frequency stabilization using a phase or frequency...

Search sweep of oscillator

455119, 331 17, 331178, 342201, 342103, H03L 712, H03B 2300

Patent

active

046161910

ABSTRACT:
A frequency-agile source of microwave frequency signals is shown to include: a voltage-controlled oscillator operating within a band of microwave frequencies; a crystal-controlled oscillator operating at a frequency lower than the band of microwave frequencies and producing harmonics within such band; a phase detector having samples of the signals out of the crystal-controlled oscillator and the voltage-controlled oscillator applied as input signals; and a shaping amplifier receiving the output signal of the phase detector to provide a control signal related to the phase difference between the signal out of the voltage-controlled oscillator and the harmonic of the crystal-controlled oscillator nearest to the frequency of the voltage-controlled oscillator.

REFERENCES:
patent: 3293559 (1966-12-01), Howard et al.
patent: 3641434 (1972-02-01), Yates et al.
patent: 4020419 (1977-04-01), Caspari et al.

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