BROADBAND AMPLIFIER Russian patent published in 2011 - IPC H03F3/50 

FIELD: radio engineering.

SUBSTANCE: broadband amplifier comprises an input transistor cascade (1), a collector output (2) of which is connected to the first (3) supply source (SS) via a resistor of collector load (4), an output transistor (T) (5), a collector of which is connected to the first (3) SS, the base is connected to the collector output (2) of the input transistor cascade (1), the second (6) SS connected to the emitter circuit of the input transistor cascade (1), a current-stabilising dipole (7), connected between the output of the device (8), connected to the emitter of the output T (5) and the second (6) SS. The circuit includes an additional current mirror (9), the input of which via the first (10) additional resistor is connected to the source of auxiliary voltage (11), the current output is connected to the collector output (2) of the input transistor cascade (1), and the common emitter output is connected to the emitter of the output T (5).

EFFECT: increased amplification ratio by voltage, elimination of an additional amplification cascade, reduced total power consumption compared to multi-cascade amplifiers.

4 cl, 11 dwg