Product circuit

Details Product circuit Product circuit

1979-10-11

1981-12-29

Miller, Jr., Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307498, 328160, G06G 712, G06G 716

Patent

active

043084710

ABSTRACT:
A product or multiplier circuit for use in an FM quadrature detector including a double-balanced differential amplifier having resistors disposed in the emitter circuits thereof. Product signals formed at collector junctions of the differential amplifier are amplified by a differential amplifier transistor pair having its emitter circuits fed by a current source and its collector circuits coupled to a current mirror circuit. By restricting the resistance values of the emitter circuit resistors of the double-balanced differential amplifier within a disclosed range, the distortion factor and signal-to-noise ratio of the circuit are improved.

REFERENCES:
patent: 3432650 (1969-03-01), Thompson
patent: 3668440 (1972-06-01), Davis et al.

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