The frequency error of an oscillator is minimized by characterizing the operating environment of the oscillator. An electronic device monitors parameters that are determined to have an effect on the frequency accuracy of the internal frequency source. Temperature is one parameter known to have an effect...http://www.google.fr/patents/US6522871?utm_source=gb-gplus-shareBrevet US6522871 - Method and apparatus for compensating local oscillator frequency error through environmental control
Method and apparatus for compensating local oscillator frequency error ...
