Patent ID: 8593231

Claim:
A wireless communication element, comprising: a receive path configured to receive a first wireless communication signal and convert the first wireless communication signal into a first digital signal based at least on an oscillator signal; a transmit path configured to convert a second digital signal into a second wireless communication signal based at least on the oscillator signal and transmit the second wireless communication signal; and an oscillator configured to output the oscillator signal to at least one of the receive path and the transmit path, the oscillator comprising: a crystal resonator; an inverter coupled in parallel with the crystal resonator; a programmable voltage regulator coupled to the inverter and configured to: supply a first supply voltage to the inverter during a startup duration of the oscillator; provide a plurality of second supply voltages to sweep across a range of supply voltages; determine at least one of the second supply voltages that provides minimal spurious content at a frequency of interest; and supply the at least one second supply voltage to the inverter after the startup duration; a control module coupled to the programmable voltage regulator, the control module configured to communicate control data to the programmable voltage regulator to cause the programmable voltage regulator to supply the first supply voltage during the startup duration and configured to iteratively communicate control data to the programmable voltage regulator to cause the programmable voltage regulator to supply at least two of the plurality of the second supply voltages to respectively accommodate at least two frequencies of interest; and a bias circuit selecting a bias voltage for the oscillator; the control module being further configured to determine control data for the plurality of second supply voltages and a plurality of bias voltages that minimize harmonics of a plurality of different frequencies of interest and to communicate the control data to the programmable voltage regulator to cause the programmable voltage regulator to provide the plurality of second supply voltages.