Patent ID: 6362700
Filing Date: 2002-03-26
Classification: H03B,H03L

Abstract:
A high stability oscillator assembly, comprising:a) a crystal oscillator mounted on a substrate and operable to produce a reference frequency; b) a temperature compensation circuit mounted on the substrate and in communication with the crystal oscillator, the temperature compensation circuit adapted to adjust the reference frequency in response to temperature changes of the crystal; c) an oven, the crystal oscillator and the temperature compensation circuit located inside the oven; d) a heater mounted on the substrate and located in the oven in proximity to the crystal oscillator; e) a temperature sensor mounted on the substrate and located in the oven in proximity to the crystal oscillator for sensing a temperature; and f) a temperature control circuit mounted on the substrate and located in the oven and in communication with the temperature sensor and the heater, the temperature control circuit controlling the heater in response to the sensed temperature such that a stable temperature is provided to the crystal oscillator; and g) the temperature compensation circuit and the temperature control circuit operating independently such that deviations from the reference are reduced.