SELECTIVE AMPLIFIER WITH PARAPHASE OUTPUT Russian patent published in 2013 - IPC H03F3/00 

FIELD: radio engineering, communication.

SUBSTANCE: selective amplifier with a paraphase output has a first (1) input transistor, the base of which is the input (2) of the device, a first (3) current-stabilising two-terminal device, a first power supply bus (4), a first (5) output transistor, a second (6) current-stabilising two-terminal device, a second (7) power supply bus, a second (8) input transistor, a second (9) output transistor, a third (10) current-stabilising two-terminal device, a secondary voltage source (11), a fourth (12) current-stabilising two-terminal device, a first (13) output of the device, a fifth (14) current-stabilising two-terminal device, a second (15) output of the device, a first (16) and a second (17) balancing capacitor, a sixth (18) current-stabilising two-terminal device, additional balancing capacitors (19) and a resistor (20), a first (21) and a second (22) additional transistor, a seventh (23) current-stabilising two-terminal device.

EFFECT: high Q-factor of the amplitude-frequency curve of the amplifier and its voltage gain at quasi-resonance frequency f₀.

2 cl, 8 dwg