Phase lock stabilized swept frequency signal source

Details Phase lock stabilized swept frequency signal source Phase lock stabilized swept frequency signal source

1977-06-09

1978-12-19

Grimm, Siegfried H.

Oscillators

Automatic frequency stabilization using a phase or frequency...

With intermittent comparison controls

331 4, 331 25, 331178, H03B 304, H03B 2300

Patent

active

041308085

ABSTRACT:
A variable frequency oscillator is disclosed which is electronically and periodically swept from one frequency to another. Prior to the beginning of each sweep, the variable frequency oscillator is phase locked to a reference signal source and the error voltage in the phase lock loop is stored. When the sweep begins the phase lock loop is opened and the error voltage is summed with a sweep voltage to provide for correction of oscillator drift on a sweep by sweep basis.

REFERENCES:
patent: 3638135 (1972-01-01), Stover
patent: 3965438 (1976-06-01), Winston
Keiter, "A Fully Calibrated, Solid State Microwave Spectrum Analyzer" Hewlett-Packard Journal, Sep. 1971, pp. 4-9.

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