Title :
Behavioral modeling of nonlinear radio-frequency power amplifiers
Author :
Vryssas, Konstantinos S. ; Samelis, Apostolos
Author_Institution :
Sch. of Electr. & Comput. Eng., Nat. Tech. Univ. of Athens, Zografou, Greece
Abstract :
In this paper, an improved behavioral model for radio-frequency power amplifiers (RF-PAs) is presented. The model has been implemented in a commercial nonlinear microwave simulator and facilitates accurate and efficient system level simulations of RF-PA large-signal behaviors such as self-bias, AM-AM, AM-PM, gain expansion effects and intermodulation distortion (IMD3) sweet-spots. The model has been validated using measurement data obtained from a commercial WCDMA PA at 1.88 GHz.
Keywords :
UHF power amplifiers; code division multiple access; intermodulation distortion; 1.88 GHz; AM-AM distortion; AM-PM distortion; WCDMA power amplifier; behavioral models; gain expansion effects; nonlinear microwave simulator; nonlinear radio-frequency power amplifier; quadrature technique; third-order intermodulation distortion; Curve fitting; Intermodulation distortion; Linearity; Multiaccess communication; Nonlinear distortion; Power amplifiers; Power system modeling; Predictive models; Radio frequency; Radiofrequency amplifiers; AM-AM and AM-PM distortion; IMD3 sweet spots; RF power amplifiers (RF-PAs); behavioral models; quadrature technique; third-order intermodulation distortion (IMD3);
Conference_Titel :
Microwave Conference Proceedings, 2005. APMC 2005. Asia-Pacific Conference Proceedings
Print_ISBN :
0-7803-9433-X
DOI :
10.1109/APMC.2005.1606185
