Phase comparators

Details Phase comparators Phase comparators

1988-03-18

1989-07-25

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

328109, 307514, 307262, 307479, H03K 906, H03K 526

Patent

active

048517844

ABSTRACT:
A phase comparator accepts two streams of digital pulses, one being a reference signal and the other a test signal, and generates an output signal indicative of the phase difference. The phase comparator can be implemented as a four-state device or higher, and thus exhibits a wide phase capture range, i.e. multiples of 360.degree., and can provide a stable, predictable and linear output signal when the two input signals are in lock. It is therefore very suitable for use in a phase locked loop in which temporary wide variations in phase can occur.

REFERENCES:
patent: 3469198 (1969-09-01), Madsen
patent: 3610954 (1971-10-01), Treadway
patent: 4764737 (1988-08-01), Kaatz

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