HIGH-EFFICIENCY HIGH-POWER ANALOGUE SIGNAL PRECISION AMPLIFIER

摘要

FIELD: radio engineering, communication.;SUBSTANCE: high-efficiency high-power analogue signal precision amplifier relates to radio equipment for use as a precision low-frequency amplifier designed based on semiconductor devices. The analogue signal precision amplifier comprises a buffer amplifier, a class D high-efficiency power amplifier, a low nonlinear distortion coefficient linear amplifier, a common feedback amplifier, a low-pass filter, wherein the input analogue signal is simultaneously transmitted to the low nonlinear distortion coefficient precision linear amplifier and the class D high-efficiency power amplifier, output signals are summed in an adder and both channels are included in the common feedback.;EFFECT: achieving precision and low nonlinear distortion coefficient values with high efficiency.;1 dwg