Clock recovery using cavity resonator

Details Clock recovery using cavity resonator Clock recovery using cavity resonator

1985-06-06

1988-04-12

Griffin, Robert L.

Pulse or digital communications

Spread spectrum

Direct sequence

375 97, 455608, H04L 700

Patent

active

047379707

ABSTRACT:
A high data rate optical network data communication system includes a receiver including a photodiode detector, a data slicer and a data decision circuit. A clock recovery arrangement includes an impulse generator coupled to the data slicer to generate impulse signals. The impulse generator includes a high speed ECL NOR gate driven by mutually out-of-phase and relatively delayed data. The impulse signals are applied to ring a coaxial cavity by way of a resistor and an input magnetic coupling loop. The coupling loop allows the cavity to achieve high Q so it will oscillate for a relatively long time, and also provides a path by which bias is applied to the output of the NOR gate to fulfill ECL biasing requirements. The cavity Q is maintained high by coupling signals from the cavity by way of a second magnetic coupling loop. The oscillations are applied by way of a limiter to the data decision circuit.

REFERENCES:
patent: 2433758 (1947-12-01), Hershberger
patent: 3209261 (1965-09-01), Critchlow
patent: 3249763 (1966-05-01), Hopner
patent: 3270339 (1966-08-01), McEven et al.
patent: 3276019 (1966-09-01), Fackler
patent: 3376507 (1968-04-01), McEven et al.
patent: 4222117 (1980-09-01), Bugg
patent: 4538119 (1985-08-01), Ashida
patent: 4543961 (1985-10-01), Brown
patent: 4562582 (1985-12-01), Tokura et al.
U.S. patent application Ser. No. 463,165, entitled "Clock Regenerator", filed Feb. 2, 1983, by: M. Abdel-Megeid.
"Q" by K. L. Smith, published in Electronics and Wireless World Magazine, Jul. 1986.

Affiliated with

Also associated with

Rating

Clock recovery using cavity resonator does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Clock recovery using cavity resonator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Clock recovery using cavity resonator will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1434363