Department of Electrical & Electronics Engineering
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Browsing Department of Electrical & Electronics Engineering by Author "AL-HİLALİ, Asaad Wisam Anees"
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Item NONLINEAR MODELLING OF RADIO FREQUENCY POWER AMPLIFIER BY USING ARTIFICIAL NEURAL NETWORK(2015-12-23) AL-HİLALİ, Asaad Wisam Anees; YAPICI, Alparslan ÇağrıNowadays large part of modern communication systems can be mostly implemented by digital circuits. As a result of this, at the radio frequency (RF) front end less circuit components are used. One of the important circuit component at RF front-end is RF power amplifier (PA). Moreover, most of the modern communication systems utilize multicarrier modulation schemes and because of this, system performance becomes more sensitive to nonlinear properties of RF PA. Because of these reasons modelling the RF PA behavior become an important issue. In this thesis behavioral model of an RF PA is obtained by using artificial neural network and extracting the third order intercept point (IP3) by post-processing. Additionally, in a similar manner, small signal S-parameters are modeled by artificial neural network in order to obtain a macro-model for RF PA. Results present that using the proposed method, macromodel of an RF PA can be obtained.