WIDEBAND DIFFERENTIAL AMPLIFIER WITH PARAPHASE OUTPUT Russian patent published in 2013 - IPC H03F3/34 

FIELD: radio engineering, communications.

SUBSTANCE: amplifier comprises the first (1) and second (2) input transistors, a resistor of local feedback (3), a controlled source of current (4), the first (5) bus of a supply source, the first (6) current output, the second (7) current output, a control input (8), an output of an auxiliary voltage amplifier (9), the first (10) buffer amplifier, the first (11) current-stabilising dipole, the second (12) bus of a supply source, the second (13) buffer amplifier, the second (14) current-stabilising dipole, the first (15) and second (16) auxiliary resistors, the first (17) and second (18) outputs of the device, their common unit (19), the first (20) and second (21) parasite capacitances. In the amplifier the first (17) output of the device is connected to the emitter of the second (2) input transistor via the first (22) correcting capacitor, and the second (18) output of the device is connected with the emitter of the first (1) input transistor via the second (23) correcting capacitor.

EFFECT: expanded range of working frequencies due to provision of higher upper border frequency.

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