Universal clock recovery network for QPSK modems

Details Universal clock recovery network for QPSK modems Universal clock recovery network for QPSK modems

1979-09-27

1981-06-16

Grimm, Siegfried H.

Oscillators

With synchronizing, triggering or pulsing circuits

331108B, 331179, H03K 3282, H03L 724

Patent

active

042740673

ABSTRACT:
A clock recovery network uses a voltage proportional to the incoming symbol rate as a coarse tuning signal to control the tuned center frequency of a voltage controlled oscillator. The incoming data is used to positively synchronize the oscillator to the incoming data stream.

REFERENCES:
patent: 3792361 (1974-02-01), Sordello et al.
patent: 4151485 (1979-04-01), La Fratta

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