Radio frequency amplifiers having improved CTB and intermodulation characteristics, integrated circuits, distortion generators and methods for reducing distortion thereof

摘要

A radio frequency amplifier according to the present invention is a simple structure having characteristics of low power consumption and low heat generation, and is designed to minimize composite triple beat (CTB) distortion, amplitude type intermodulation distortion and phase modulation distortion, A first circuit composed of a transformer and a nonlinear element deforming the input signal in an equilibrium state and a first delay line connected in series with the nonlinear element, and a second delay line connected in series with the attenuation element and the attenuation element And at least one distortion generating circuit which includes a second circuit and to which the first circuit and the second circuit are connected in parallel. Wherein the at least one distortion generating circuit is connected to at least one of an output and an input between elements of a radio frequency amplifier stage or is connected to an intermediate point thereof and the first delay line and the second delay line are connected to the radio frequency amplifier stage Wherein the delay time change is opposite to a delay time change at a signal input level caused by a delay time difference between the input and output of the radio frequency amplifier stage, The amplified input signal is transformed from a parallel state to an unbalanced state before outputting the amplified signal from the amplified signal.