Fast VCO band selection by frequency to voltage converter

Details Fast VCO band selection by frequency to voltage converter Fast VCO band selection by frequency to voltage converter

2006-07-18

2008-10-28

Kinkead, Arnold (Department: 2817)

Oscillators

With frequency adjusting means

Step-frequency change

C331S034000, C331S016000

Reexamination Certificate

active

07443259

ABSTRACT:
The invention comprises a phase locked loop that has an input adapted to receive a reference frequency. A phase detector is connected directly to the input, a charge pump is connected directly to the phase detector, and a loop filter is connected directly to the charge pump. Also, a voltage controlled oscillator is connected directly to the loop filter, and is adapted to perform frequency band selection. A band selection circuit is connected to the voltage controlled oscillator.

REFERENCES:
patent: 7164322 (2007-01-01), Knotts et al.

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