Patent ID: 7504901

Claim:
A FET oscillator system having an oscillator with an active amplifier element and a feedback network, said oscillator having oscillator output frequency and receiving a frequency control signal, said oscillator output frequency having first frequency variations induced by said amplifier element temperature variations and second frequency variations induced by variations in said frequency control signal, comprising: means for measuring temperature of said active amplifier element; adjusting means for providing said variations in said frequency control signal in accordance with said temperature variations; said adjusting means having reference voltage means and correction means both responsive to said temperature for determining said variations in said frequency control signal in accordance with said temperature variations; means within said active amplifier element for receiving said variations in said frequency control signal to induce said second frequency variations; said frequency control signal being a voltage to power said active amplifier; said voltage having a predetermined value for each value of said temperature; and, said second frequency variations compensating said first frequency variations to provide a constant oscillator output frequency.