Research/Patents/US 5459431
US 5459431

FREQUENCY/PHASE ANALOG DETECTOR AND ITS USE IN A PHASE-LOCKED LOOP

Assignee

THOMSON-CSF

Filed

Apr 6, 1988

Granted

Oct 17, 1995

Location

PARIS FR

Abstract

A frequency/phase detector for a reference signal with a fixed frequency and a second signal with a variable frequency comprises essentially a frequency discriminator, already known, in which the output signal of a frequency-dependent phase-shifting circuit centered on said fixed frequency is applied, not directly to a demodulator circuit but through a summing circuit that receives in addition said reference signal.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

Nov 28, 1988

Rescinded

Oct 24, 1994

Duration

5 years, 11 months

Inventor

  • 1YVES BESSON

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