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US 2006/0068744 A1Published application
Controlling the frequency of an oscillator
AssigneeSilicon Laboratories Inc.
InventorsJames Maligeorgos, Dylan Hester, Augusto Marques, G. Tuttle
Life of this patent
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Abstract
A technique includes selectively coupling impedances to an oscillator to establish a first frequency of operation of the oscillator. The technique includes repeating the selective coupling in a feedback loop to cause the first frequency to be near a second frequency.
Claims41
A method comprising:
- selectively coupling impedances to an oscillator to establish a first frequency of operation of the oscillator;
- and
- repeating the coupling in a feedback loop to cause the first frequency to be near a second frequency of a wireless signal.
A method comprising:
- establishing an oscillating current in a resonant tank;
- providing a resistor in series with the resonant tank to generate an indication of the current;
- and
- generating a clock signal in response to the indication.
1 more element
An apparatus comprising:
- impedances;
- an oscillator core;
- and
- a circuit to selectively couple the impedances to the oscillator core to establish a first frequency of operation of the oscillator core and repeat the coupling in a feedback loop to cause the first frequency to be near a second frequency of a wireless signal.
1 more element
An apparatus comprising:
- a resonant tank to provide an oscillating current;
- a resistor coupled in series with the tank to generate an indication of the current;
- and
- a circuit to generate a clock signal in response to the indication.
1 more element
An article comprising a storage medium readable by a processor-based system and storing instructions to, when executed, cause the system to:
- communicate a digital indication of a first frequency of operation for an oscillator, and
- regulate a timing of the communication to establish a rate limit at which the first frequency changes.
A system comprising:
- a wireless interface to receive a wireless signal;
- and
- a transceiver comprising:
- impedances;
- an oscillator core to provide a reference signal for the transceiver having a first frequency;
- and
- a circuit to selectively couple the impedances to the oscillator core to establish the first frequency and repeat the coupling in a feedback loop to cause the first frequency to be near a second frequency of the wireless signal.
4 more elements
Dependencies are inferred from the claim text.