PLL circuit including a voltage controlled oscillator and a...

Details PLL circuit including a voltage controlled oscillator and a... PLL circuit including a voltage controlled oscillator and a...

2005-02-08

2005-02-08

Mis, David (Department: 2817)

Oscillators

Automatic frequency stabilization using a phase or frequency...

Particular error voltage control

C331S03600C, C331S03600C, C331S1170FE, C331S17700V, C331S179000, C331S181000

Reexamination Certificate

active

06853257

ABSTRACT:
A voltage controlled oscillator having a wide oscillation frequency band, desirable carrier-noise characteristic, and desirable linearity of the oscillation frequency relative to a control voltage. The voltage controlled oscillator includes an oscillation unit and a control unit. The oscillation unit generates an output signal having an oscillation frequency corresponding to the control voltage in one of a plurality of oscillation frequency bands. The oscillation unit includes a switching unit for selecting one of the plurality of oscillation frequency bands in accordance with a switching signal. The control unit generates the switching signal in accordance with the control voltage.

REFERENCES:
patent: 6496075 (2002-12-01), Justice et al.
patent: 05-199109 (1993-08-01), None
patent: 09-214335 (1997-08-01), None
patent: 11-308099 (1999-11-01), None
patent: 11-330960 (1999-11-01), None

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