Research/Patents/US 4724437
US 4724437

SIGNAL ACQUISITION CIRCUIT WITH VARIABLE BANDWIDTH PHASE LOCKED LOOP

Assignee

MARCONI ELECTRONIC SYSTEMS LIMITED

Filed

Apr 5, 1978

Granted

Feb 9, 1988

Location

GB

Abstract

A signal acquisition circuit for a missile guidance system has a phase lock loop which is responsive to incoming signals received from a target and will lock on to the frequency of the received signal. The bandwidth of the phase lock loop is altered in dependence on the signal being received in order to distinguish between a valid target and noise.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

Dec 3, 1981

Rescinded

May 20, 1987

Duration

5 years, 5 months

Inventor

  • 1MICHAEL ARTHUR JONES

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