Circuit and method for controlling an oscillation loop

Details Circuit and method for controlling an oscillation loop Circuit and method for controlling an oscillation loop

2005-04-04

2009-02-03

Pascal, Robert (Department: 2817)

Oscillators

With particular source of power or bias voltage

C331S03600C, C331S158000, C331S17700V

Reexamination Certificate

active

07486153

ABSTRACT:
The circuit for controlling the oscillation frequency of an oscillation loop (66) has among others the following components—a first tunable capacitor unit (80) for providing a selectable amount of capacitance to the oscillator loop in accordance with a stored setting, and for controlling the oscillation frequency of the oscillator loop, and—a volatile storage unit (84) adaptated to store the setting of the tunable capacitor unit. The circuit further comprises a supply line (52) to the volatile storage unit and at least one other supply line (44) for the other components of said circuit. The supply line to the volatile storage unit is independent of said at least one other supply line, so that the volatile storage unit can be powered independently of other components of said circuit.

REFERENCES:
patent: 5030928 (1991-07-01), Ho et al.
patent: 5777524 (1998-07-01), Wojewoda et al.
patent: 5874864 (1999-02-01), Muto et al.
patent: 6603365 (2003-08-01), Dotzler et al.
patent: 2003/0058057 (2003-03-01), Schmidt
patent: 2003/0132809 (2003-07-01), Chinnugounder et al.

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