Spectral analysis of nonlinear amplifier based on the complex gain Taylor series expansion

Author

Ermolova, N.Y.

Author_Institution

Dept. of Electr. & Commun. Eng., Helsinki Univ. of Technol., Finland

Volume

5

Issue

12

fYear

2001

Firstpage

465

Lastpage

467

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;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/4234.974487

Filename

974487