DC-DC converter connected to phase locked loop

Details DC-DC converter connected to phase locked loop DC-DC converter connected to phase locked loop

2007-04-03

2007-04-03

Riley, Shawn (Department: 2838)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Synchronizing

Reexamination Certificate

active

11011236

ABSTRACT:
A DC-DC converter is provided. The DC-DC converter is connected to a PLL circuit, supplying a voltage at least to a power source terminal of a voltage controlled oscillator of the PLL circuit. A frequency of a ripple voltage included in the voltage is less than a natural frequency of the PLL circuit or more than one-half of a frequency of an output signal of the PLL circuit.

REFERENCES:
patent: 4641042 (1987-02-01), Miyazawa
patent: 6429416 (2002-08-01), Porter
patent: 6608522 (2003-08-01), Mumper et al.
patent: 2000-175447 (2000-06-01), None
patent: 2001-103738 (2001-04-01), None
patent: 2001-157437 (2001-06-01), None
A. Hajimir, S. Limotryakis, T. Lee, Jitter and Phase Noice in Ring Oscillators, IEEE Journal of Solid-State Circuits, vol. 34, No. 6, Jun. 1999.
B. Drakhlis, Calculate Oscillator Jitter by Using Phase-Noise Analysis, Microwaves & RJ, Jan. 2001.

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