Patent ID: 7482889

Claim:
An oscillator comprising: a SC cut resonator having a SC cut resonator turning point; an oscillator circuit connected to the SC cut resonator and operable to produce a reference frequency; a temperature compensation circuit connected to the oscillator circuit, the temperature compensation circuit configured to compensate an AT cut resonator having an AT cut turning point; a first temperature sensor connected to the temperature compensation circuit, the first temperature sensor being adapted to provide a temperature signal to the temperature compensation circuit, the temperature signal causing the temperature compensation circuit to operate at the SC cut resonator turning point; a varactor connected to the oscillator; and an oven, wherein the SC cut resonator, the oscillator circuit, the temperature compensation circuit, the first temperature sensor and the varactor are all located inside the oven, the oven comprising: a heater located in proximity to the SC cut resonator; a second temperature sensor located in proximity to the SC cut resonator; and a heater control circuit in communication with both the second temperature sensor and the heater for controlling the heater.