INSTRUMENTATION AMPLIFIER WITH RESONANCE AMPLITUDE-FREQUENCY CHARACTERISTIC Russian patent published in 2014 - IPC H03F3/00 

FIELD: instrumentation.

SUBSTANCE: proposed amplifier incorporates the components that follow: input signal source (1), base of first input transistor (2), second input transistor (3), device output (4), first current-stabilising dipole (5), first power supply bus (6), current mirror (7), second power supply bus (8), output (9), second current-stabilising dipole (10), first correcting capacitor (11), common bus of power supplies (12), second correcting capacitor (13), input (14) and extra resistor (15).

EFFECT: lower output signal attenuation at higher and stable Q factor of AF characteristic, higher voltage gain in quasiresonance frequency f₀.

6 dwg