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A new approach for non-linear analysis of power amplifiers

Bondar, Dmytro and Budimir, Djuradj and Shelkovnikov, Boris (2008) A new approach for non-linear analysis of power amplifiers. In: 18th International Crimean Conference "Microwave & Telecommunication Technology" (CriMiCo'2008). 8-12 September, Sevastopol, Crimea, Ukraine. IEEE, Los Alamitos, USA, pp. 125-128. ISBN 9789663351698

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Official URL: http://dx.doi.org/10.1109/CRMICO.2008.4676316

Abstract

This paper presents a new approach for non-linear analysis of power amplifiers based on the n-order polynomial modelling. A general expression for the fundamental frequency output is developed in this paper. It allows considering any order of polynomial model and obtaining analytical expression for the fundamental-frequency output without complex computations, using developed formulas. This model significantly simplifies non-linear analysis of power amplifiers and the process of designing linearizers. This paper also presents a simple approach for obtaining polynomial model from a frequency response of power amplifier. The proposed method is verified by experiments. Obtained polynomial model shows simulation results similar to the measurements for real amplifier. Developed n-order output modelling and proposed model extraction method can significantly simplify, optimize and enhance power amplifiers’ non-linear analysis and behavioural modelling. Proposed modelling approach can be also used to design linearizers.

Item Type:Book Section
Research Community:University of Westminster > Electronics and Computer Science, School of
ID Code:5635
Deposited On:19 Dec 2008 15:19
Last Modified:11 Aug 2010 15:34

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