Title :
Accurate modeling of wideband RF Doherty power amplifiers using dynamic nonlinear models
Author :
Ye, Yan ; Liu, Taijun ; Fan, Zhiwei ; Zeng, Xingbin ; He, Jiaming ; Ghannouchi, Fadhel M.
Author_Institution :
Coll. of Inf. Sci. & Eng., Ningbo Univ., Ningbo
Abstract :
In this paper, a 100-watte LDMOS Doherty power amplifier is designed to test the modeling capability of the widely used memory polynomial model and the augmented Wiener model for the dynamic nonlinear behaviors of a wideband PA. The augmented Wiener model and its identification algorithm are discussed in details. The experimental validation results demonstrate that the augmented Wiener model can simulate the dynamic nonlinearity of this Doherty PA more accurately than the memory polynomial model.
Keywords :
power amplifiers; radiofrequency amplifiers; stochastic processes; wideband amplifiers; LDMOS Doherty power amplifier; augmented Wiener model; dynamic nonlinear model; memory polynomial model; power 100 W; wideband RF Doherty power amplifier; Broadband amplifiers; Educational institutions; Helium; Information science; Polynomials; Power amplifiers; Power engineering and energy; Power system modeling; Radio frequency; Radiofrequency amplifiers; Memory effects; Wiener model; memory polynomial; power amplifiers;
Conference_Titel :
Microwave and Millimeter Wave Technology, 2008. ICMMT 2008. International Conference on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4244-1879-4
Electronic_ISBN :
978-1-4244-1880-0
DOI :
10.1109/ICMMT.2008.4540693
