Phase detector

Details Phase detector Phase detector

1989-07-24

1990-12-04

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

328155, 307511, H03D 1300, H03K 906, H03L 700

Patent

active

049756508

ABSTRACT:
A phase detector is provided for detecting the phase difference between a first input signal and a second input signal and providing an output corresponding thereto. The phase detector comprises a dual state phase detector, a tri-state phase detector, a control input for receiving a control signal, and a control circuit for selecting either the dual state phase detector or tri-state phase detector. The dual state phase detector compares the phase difference between the first input signal and the second input signal. The tri-state phase detector compares the phase difference between the second input signal and the inverse of the first input signal. The control circuit selects the output of the dual state phase detector or selects the output of the tri-state phase detector based upon the control signal.

REFERENCES:
patent: 3667031 (1972-05-01), Cox
patent: 3983506 (1976-09-01), Rettinger
patent: 4499425 (1985-12-01), Maas
patent: 4764737 (1988-08-01), Kaatz
patent: 4816774 (1989-03-01), Martin

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