Variable pulse width phase detector

Details Variable pulse width phase detector Variable pulse width phase detector

1992-02-21

1993-10-05

Mis, David

Oscillators

Automatic frequency stabilization using a phase or frequency...

With reference oscillator or source

331 1A, 331 17, 307602, 307603, 375120, H03L 7089

Patent

active

052509133

ABSTRACT:
A phase detector (1) for a phase locked loop (PLL) for bit clock retrieval where the phase detector employs a plurality of variable unit delays (20,21) and has a constant gain region that is a percentage of the clock period over an extended frequency range of the VCO enabling a single (PLL) chip to operate for several applications at widely different frequencies.

REFERENCES:
patent: 4590602 (1986-05-01), Wolaver
patent: 4884041 (1989-11-01), Walker
Electronics Letters, vol. 22, No. 12, Jun. 5, 1986, pp. 677-679, Syed, K. E. et al; "Gigahertz Voltage-Controlled Ring Oscillator".

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