Accession Number : ADD000090
Title : Phase Lock Loop with Automatic Step by Step Search Sweep Followed by Linear Search Sweep.
Descriptive Note : Patent,
Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C
Personal Author(s) : Klein,Ira
Report Date : 04 Dec 1973
Pagination or Media Count : 6
Abstract : The patent describes a phase-locking oscillator loop circuit in conjunction with automatic circuitry for searching for and forcing a phase locked condition with respect to a reference frequency, in which condition the oscillator of the loop operates at a frequency which is a function of first and second input frequencies. The automatic circuitry is characterized by means for step by step searching from a first coarse frequency approximation, with transition to a linear sweep until the lock frequency is achieved. The step by step search automatically reiterates if the desired frequency is passed.
Descriptors : *Phase locked systems, *Patents, Voltage controlled oscillators, Sweep generators
Subject Categories : Electrical and Electronic Equipment
Distribution Statement : APPROVED FOR PUBLIC RELEASE