Research/Patents/US 4672330
US 4672330

PHASE-LOCK LOOP SYSTEMS

Assignee

MARCONI ELECTRONIC SYSTEMS LIMITED

Filed

Jul 23, 1974

Granted

Jun 9, 1987

Location

GB

Abstract

A phase-lock loop system with particular use in radar tracking systems is disclosed. From a number of input signals of varying frequencies such as a carrier frequency and several side band frequencies the system can lock into phase and frequency with the input which has the largest amplitude by sweeping across a predetermined range of frequencies and allowing the phase-lock loop to operate only when a predetermined amplitude is exceeded.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

Jul 15, 1982

Rescinded

Mar 28, 1986

Duration

3 years, 8 months

Inventor

  • 1JOHN THOMAS FLOYD

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Back to patent indexSource: USPTO 35 USC §181 secrecy order records