U.S. Patents:

Correlator Stabilized Digitally Tuned Oscillator Synthesizer

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corrpicPatent Number: 6,639,476
Date of Patent: October 28, 2003

A digitally tuned oscillator synthesizer having a correlator circuit and selectable voltage controlled oscillators is disclosed. The correlator circuit develops an acccurate output which provides frequency stability for the synthesizer, whereas the voltage oscillators each operate over less than an octave of the desired RF frequency output, but cooperatively operate to produce RF outputs over a wide range of frequencies.


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