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

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1 Author(s)
Ermolova, N.Y. ; Dept. of Electr. & Commun. Eng., Helsinki Univ. of Technol., Finland

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.

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Communications Letters, IEEE  (Volume:5 ,  Issue: 12 )