Title :
Spectral regrowth of digital signal through an amplifier using a new linearity method
Author :
Jing, D. ; Chan, W.S. ; Li, C.W.
Author_Institution :
Dept. of Electron. Eng., City Univ. of Hong Kong, Hong Kong
Abstract :
The AM/AM and AM/PM distortion are the dominate nonlinear behaviour of linear power amplifiers. The nonlinear transfer function of the amplifier is expressed as a power series to model the small nonlinear behaviour. Fourier transformation is used to analyse and interpret the origin of the spectral regrowth of digital signals. The amount of spectral growth is analysed using convolution and a new method is proposed which can reduce the spectral regrowth of the digital signal
Keywords :
Fourier transforms; amplitude modulation; convolution; digital signals; electric distortion; microwave power amplifiers; series (mathematics); spectral analysis; transfer functions; AM/AM distortion; AM/PM distortion; Fourier transformation; convolution; digital signal; linear power amplifiers; linearity method; nonlinear behaviour; nonlinear transfer function; power series; spectral regrowth; Convolution; Digital communication; Digital modulation; Equations; Fourier transforms; Linearity; Microwave devices; Nonlinear distortion; Power amplifiers; Signal analysis;
Conference_Titel :
Microwave Conference Proceedings, 1997. APMC '97, 1997 Asia-Pacific
Print_ISBN :
962-442-117-X
DOI :
10.1109/APMC.1997.654594
