Oscillators – Automatic frequency stabilization using a phase or frequency... – With reference oscillator or source
Patent
1993-06-09
1994-09-20
Grimm, Siegfried H.
Oscillators
Automatic frequency stabilization using a phase or frequency...
With reference oscillator or source
331 25, H03L 706
Patent
active
053493109
ABSTRACT:
The circuit arrangement of the invention presents an oscillator, whose frequency can be linearly varied within a wide control range, without affecting the oscillator's stability. The frequency of a fixed frequency generator (1) is divided to the desired frequency by a frequency divider (2), whose divider ratio can be varied in very small steps, and the resulting jitter is filtered out by a very simple phase control circuit (3). Improved short-term stability and holdover performance are also achieved. The oscillator can be universally used as clock generator in all digital circuit arrangements.
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Horsch Gunter
Powell William E.
Rieder Klaus-Hartwig
Alcatel Network Systems, Inc.
Grimm Siegfried H.
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