CASCODE AMPLIFIER WITH EXTENDED FREQUENCY BAND Russian patent published in 2015 - IPC H03F3/45 

FIELD: radio engineering, communication.

SUBSTANCE: device includes an input voltage-to-current converter, the current output of which is connected to the emitter of an output transistor, a bias voltage source connected to the base of the output transistor, a two-terminal element of a collector load connected between the power supply bus and the output of the device, which is connected to the collector of the output transistor. The output of the device is connected to the input of an additional current amplifier through an additional balancing capacitor, wherein the output of the additional current amplifier is connected to the emitter of the output transistor.

EFFECT: extending the operating frequency range of the cascode amplifier without deterioration of voltage gain.

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