Phase detector

Details Phase detector Phase detector

1988-06-03

1989-09-26

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

328133, 328155, 328160, 307262, G05F 500, H03K 513

Patent

active

048703036

ABSTRACT:
A detection circuit for providing an error signal corresponding to the phase difference between applied input signals is described comprising a balanced multiplier input section for receiving the input signals and having a pair of outputs; a first switching circuit responsive to a switching signal for commutating the outputs of the multiplier section between first and second circuit nodes; a current turnaround circuit coupled between the first and second circuit nodes and third and fourth circuit nodes, a second switching circuit responsive to the switching signal for alternately coupling the third and fourth circuit nodes to a fifth circuit node and an output of the detection circuit; a current mirror circuit having first and second terminals and a third switching circuit responsive to the switching signal for alternately coupling the first and second terminals of the current mirror circuit to the fifth circuit node and the output of the detection circuit.

REFERENCES:
patent: 3838262 (1974-09-01), van de Plassche
patent: 4156204 (1979-05-01), Hargis
patent: 4242634 (1980-12-01), Metcalf
patent: 4629914 (1986-12-01), Okanobu
patent: 4773085 (1988-09-01), Cordell

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