Nonlinear Distortion Analysis of Polar Transmitters
Pedro, J. C.
; Garcia, J. A.
Cabral, P. M.
IEEE Transactions on Microwave Theory and Techniques Vol. 55, Nº 12, pp. 2757 - 2765, December, 2007.
ISSN (print): 0018-9480
Journal Impact Factor: 2,711 (in 2008)
Digital Object Identifier: 10.1109/TMTT.2007.909145
This paper gives a comprehensive analysis of the
major nonlinear distortion generation mechanisms present in modern wireless polar transmitters. Based on a simplified description of the physical operation of voltage supply modulated switching mode power amplifiers, it derives an analytical model of both the AM-AM and AM-PM distortions usually encountered on polar transmitters excited by the standard two-tone excitation. Extensive nonlinear measurement and simulation results made on a real power amplifier circuit of a polar transmitter architecture validate the proposed analytical