BROADBAND DIFFERENTIAL OPERATING AMPLIFIER Russian patent published in 2018 - IPC H03F3/45 

FIELD: radio engineering, communication.

SUBSTANCE: amplifier comprises: the first input differential stage with the first and the second current outputs, the common emitter circuit of which is connected to the first power supply bus, the first auxiliary transistor, the emitter of which is connected to the first current output of the input differential stage, the base is connected to an auxiliary bias voltage source, and the collector is connected to the emitter of the first output transistor and is connected to the second power supply bust hrough the first current-stabilizing two-terminal network, the second auxiliary transistor, the emitter of which is connected to the second current output of the input differential stage, the base is connected to the auxiliary bias voltage source, and the collector is connected to the emitter of the second output transistor and is connected to the second power source bus through the second current-stabilizing two-terminal network, a load circuit, the first output device associated with the first input of the load circuit and the collector of the first output transistor, the second output device associated with the second input of the load circuit and the collector of the second output transistor, and the base of the first output transistor is connected to the emitter of the first auxiliary transistor, the base of the second output transistor is connected to the emitter of the second auxiliary transistor.

EFFECT: increasing the upper limiting frequency of the voltage gain without increasing the current consumption.

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