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

FIELD: radio engineering, communications.

SUBSTANCE: selective amplifier comprises a source of signal connected to an input of a device, the first input transistor, the first current-stabilising dipole, the first bus of a supply source, the second bus of a supply source, the second current-stabilising dipole, the first resistor of a collector load, connected with a device output, the first correcting capacitor, a current mirror, the second correcting capacitor and a frequency-setting resistor.

EFFECT: higher quality of amplifier amplitude-frequency characteristic and its amplification ratio by voltage at quasiresonance frequency f₀.

2 cl, 7 dwg