Title :
RF power amplifier modeling for three-port applications using polynomials with IIR bases functions
Author :
Masood, Mir ; Rey, Claudio ; Kenney, Steve ; Norris, George ; Sherman, Rick
Author_Institution :
Georgia Tech, Atlanta, GA, USA
Abstract :
This paper presents a scheme of modeling radio frequency (RF) power amplifier (PAs) for 3-port applications by including modeling of bias port of PA along with its input and output ports. This scheme uses polynomials with infinite impulse response (IIR) bases functions for modeling non-linear behavior of PA as well as its short and long term memory effects. Power amplifiers designed for third generation (WCDMA) wireless system are investigated for the validation of modeling scheme. Excellent results are obtained, where the error between model prediction and measurements is better than 43 dBc for a wide range of bias voltages, with the amplifier being driven with a WCDMA signal at several power levels.
Keywords :
code division multiple access; polynomials; power amplifiers; radiofrequency amplifiers; 3-port applications; IIR basis functions; RF power amplifier modeling; WCDMA; bias port; infinite impulse response basis function; long term memory effects; nonlinear behavior; polynomials; radio frequency power amplifier modeling; short term memory effects; third generation wireless system; three-port applications; Multiaccess communication; Polynomials; Power amplifiers; Power generation; Power measurement; Power system modeling; Predictive models; Radio frequency; Radiofrequency amplifiers; Voltage; Power amplifier; Three-port; infinite impulse response (IIR) bases functions; modeling; nonlinear; polynomial;
Conference_Titel :
Radio and Wireless Symposium (RWS), 2010 IEEE
Conference_Location :
New Orleans, LA
Print_ISBN :
978-1-4244-4725-1
Electronic_ISBN :
978-1-4244-4726-8
DOI :
10.1109/RWS.2010.5434219
