New York Inventor Develops Phase Locked Loop Frequency Synthesizer

ALEXANDRIA, Va., Aug. 3 -- Nicholas Paul Shields of Fairport, N.Y., has developed a phase locked loop (PLL) frequency synthesizer.

According to the U.S. Patent & Trademark Office: "The PLL frequency synthesizer includes a phase detector receiving a reference signal, a controlled oscillator (e.g. a voltage controlled oscillator) connected to the phase detector and generating a synthesized frequency output signal based upon the reference signal, a mixer (e.g. an in-phase and quadrat . . .