ANALOG MULTIPLIER OF TWO SIGNALS Russian patent published in 2010 - IPC G06G7/16 H03F3/45 

FIELD: radio engineering.

SUBSTANCE: invention may be used in devices of automatic adjustment of amplification, phase detectors and modulators, and also in systems of phase self-tuning and multiplication of frequency or as amplifier, voltage transfer coefficient of which depends on the level of control signal. Analog multiplier of signals (APN) is the basic unit of up-to-date systems for receiving and processing of signals from HF and SHF ranges, analog computer and metering equipment. APN comprises multiplying cell (1) on the basis of two differential cascades having the first (2) and second (3) potential inputs of channel "X". The first (4) and second (5) current inputs of channel "Y". Load circuit (6) connected to the first (7) and second (8) current outputs of multiplying cell (1). The first (9) and second (10) current-stabilising two-terminal elements connected to according first (4) and second (5) current inputs of channel "Y", double-pole transformer (11) of "signal of channel "Y"-current", connected to the second (5) current input of channel "Y". The first (9) and second (10) current-stabilising two-terminal elements are realised accordingly on the basis of the first (14) and second (15) additional transistors, bases of which are connected to source of shift voltage (16). Emitters are connected to bus (17) of power supply source via auxiliary two-terminal elements (18) and (19). Besides double-pole transformer (11) of "signal of channel "Y"-current" is connected between the second (5) current input of channel "Y" and emitter of the first (14) additional transistor.

EFFECT: creation of conditions for square four-quadrant multiplication of signals, improved accuracy.

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