ANALOGUE SIGNAL MIXER Russian patent published in 2014 - IPC H03D7/00 

FIELD: radio engineering, communication.

SUBSTANCE: analogue signal mixer has antiphase inputs with channel X signal sources, first, second, third and fourth input transistors, the bases of which are connected to the antiphase inputs, and combined emitters of the first and second input transistors are connected through a first current-stabilising two-terminal element to the first power supply bus, load two-terminal elements connected between the second power supply bus and the first and second outputs of the device. A second current-stabilising two-terminal element is connected between the combined emitters of the third and fourth input transistors and the second power supply bus; an channel Y input voltage source is connected to emitters of the input transistors through series-connected capacitors and auxiliary resistors; the collectors of the third and fourth input transistors are connected to the third and fourth outputs of the device, respectively, and are connected to the first power supply bus through the load two-terminal elements, wherein the second output of the device is connected through a capacitor to the third output of the device, and the first output of the device is connected through a capacitor to the fourth output of the device.

EFFECT: enabling operation of the signal mixer in single-phase control.

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