Amplitude modulator with three differential transistor pairs

Details Amplitude modulator with three differential transistor pairs Amplitude modulator with three differential transistor pairs

1983-03-29

1985-10-15

LaRoche, Eugene R.

Modulators

Amplitude modulator

Nonlinear device controlled by modulating signal

332 44, 455108, H03C 100

Patent

active

045477523

ABSTRACT:
An amplitude modulator is disclosed which has first and second differential pairs of transistors whose bases are supplied with a carrier signal, and a third differential pair of transistors whose collectors are respectively connected to the common emitters of the first and second differential pairs of transistors and of which one transistor is supplied at a base with a modulating signal. The emitters of the first differential pair of transistors are connected together through corresponding resistors. The collectors of two transistors which are included in the first and second differential pair of transistors and of which the bases are connected together and further connected to a load resistor.

REFERENCES:
patent: 3550040 (1970-12-01), Sinusas
patent: 3974460 (1976-08-01), Hongu et al.
patent: 4310810 (1982-01-01), Toyomura et al.
Rohde, "Performance Capability of Active Mixers" Wescon Conference Record, vol. 25, Sept., 1981, El Segundo, CA.
Bilotti, "Applications of a Monolithic Analog Multiplier," IEEE Journal of Solid-State Circuits, vol. SC-3, No. 4, Dec. 1968.

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