Oscillators – Automatic frequency stabilization using a phase or frequency... – Plural a.f.s. for a single oscillator
Patent
1998-06-11
2000-04-04
Grimm, Siegfried H.
Oscillators
Automatic frequency stabilization using a phase or frequency...
Plural a.f.s. for a single oscillator
331 11, 331 17, 331 23, H03D 309, H03L 7087, H03L 7089, H03L 7093
Patent
active
060466464
ABSTRACT:
Apparatus and methods for controlling the frequency spectrum of a clock signal, for example, to reduce EMI emissions. A PLL circuit receives a reference signal and generates an output clock signal. A modulating circuit is coupled to the PLL and generates a modulating signal. The PLL receives the modulating signal and accordingly varies the frequency spectrum of the output clock signal.
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Lo Pedro W.
Richmond Gregory J.
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