Title :
Spectral analysis of nonlinear amplifier based on the complex gain Taylor series expansion
Author_Institution :
Dept. of Electr. & Commun. Eng., Helsinki Univ. of Technol., Finland
Abstract :
A method of spectral analysis for a nonlinear amplifier driven by a Gaussian signal is presented. The technique is based on the Taylor series expansion of the complex gain of an amplifier. Therefore, it takes into account both amplitude-amplitude modulation (AM/AM) and amplitude-phase modulation (AM/PM) conversions and requires only an input signal autocorrelation (or power spectral density) and AM/AM and AM/PM measurements without any additional calculations.
Keywords :
amplitude modulation; phase modulation; power amplifiers; series (mathematics); spectral analysis; AM/AM conversions; AM/AM measurements; AM/PM conversions; AM/PM measurements; Gaussian signal; amplitude-amplitude modulation conversions; amplitude-phase modulation conversions; complex gain Taylor series expansion; input signal autocorrelation; nonlinear amplifier; power spectral density; spectral analysis; Amplitude modulation; Autocorrelation; Distortion measurement; Nonlinear distortion; Power measurement; Random processes; Signal analysis; Signal processing; Spectral analysis; Taylor series;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/4234.974487
