Title:
SYSTEM FOR CONTROLLING THE FREQUENCY OF AN OSCILLATOR
Document Type and Number:
WIPO Patent Application WO2002080351
Kind Code:
A8
Abstract:
Systems for controlling the frequency of the output signal of a controllable oscillator (202) in a frequency synthesizer (200) are provided. One such system comprises a controllable oscillator (202) and a frequency control circuit (208). The controllable oscillator (202) is configured to generate an output signal that has a predefined frequency. The controllable oscillator (202) is also configured with a plurality of operational states that are controlled by the frequency control circuit (208). Each operational state of the controllable oscillator (202) defines a distinct frequency for the output signal of the controllable oscillator (202). The frequency control circuit (208) receives the output signal of the controllable oscillator (202) and determines the distinct frequency for the output signal that best approximates the predefined frequency. The frequency control circuit (208) may also provide a control signal to the controllable oscillator (202) that is configured to change the controllable oscillator (202) to the operational state corresponding to the distinct frequency that best approximates the predefined frequency.
Inventors:
DAMGAARD MORTEN
DOMINO WILLIAM J
MAGOON RAHUL
MOLNAR ALYOSHA C
ZACHAN JEFF
DOMINO WILLIAM J
MAGOON RAHUL
MOLNAR ALYOSHA C
ZACHAN JEFF
Application Number:
PCT/US2002/009243
Publication Date:
January 09, 2003
Filing Date:
March 25, 2002
Export Citation:
Assignee:
CONEXANT SYSTEMS INC (US)
International Classes:
H03L5/00; H03L7/087; H03L7/099; H03L7/113; H03L7/187; H04B1/40; H03B1/00; (IPC1-7): H03D3/24; H04L27/06; H04L25/49; H03L7/00; H03L7/06; H04B1/18; H04B1/06; H04B1/26
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