Oscillators – Automatic frequency stabilization using a phase or frequency... – Search sweep of oscillator
Patent
1984-07-24
1986-07-29
Grimm, Siegfried H.
Oscillators
Automatic frequency stabilization using a phase or frequency...
Search sweep of oscillator
331117R, 331177V, 331178, H03B 2300
Patent
active
046033050
ABSTRACT:
A method and apparatus for generating a sweep signal, the frequency of which is accurately known at all times during the sweep cycle. The beginning and ending frequencies are fixed by a phase-locked loop and the resulting error correction voltages are stored. During the sweep, these error voltages determine the offset and slope of the D.C. voltage ramp signal which governs the frequency of the sweep oscillator.
REFERENCES:
patent: 3364437 (1968-01-01), Loposer et al.
patent: 3382460 (1968-05-01), Blitz et al.
patent: 3530399 (1970-09-01), Goggins, Jr.
patent: 3777276 (1973-12-01), Klein
patent: 4349789 (1982-09-01), Kurihara
patent: 4513256 (1985-04-01), Kurihara et al.
Cushman Electronics, Inc.
Grimm Siegfried H.
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