Title :
A new method to find the optimal subharmonic impedance for CDMA power amplifier with Volterra series analysis
Author :
Wang, Bo ; Hong, Xingnan ; Gao, Baoxin
Author_Institution :
State Key Lab. on Microwave & Digital Commun., Tsinghua Univ., Beijing, China
Abstract :
The Volterra series method is employed in this paper to analyze the influence of the subharmonic termination. A set of formula is also deduced to calculate the optimal subharmonic impedance. With the formula, a new measurement-based method is presented to obtain the optimal subharmonic termination for the weak nonlinear condition. With this new method, the optimal subharmonic load can be easily calculated with a little amount of measurement data, while, in contrast, a great number of measurement data would be required for the conventional load pull method. The analysis result is verified with the simulation result obtained by the HB method and agrees well with the analysis
Keywords :
Volterra series; code division multiple access; electric impedance; nonlinear network analysis; power amplifiers; CDMA power amplifier; MESFET model; Volterra series analysis; measurement-based method; optimal subharmonic impedance; subharmonic termination; weak nonlinear condition; Circuits; Frequency; Impedance; Laboratories; Microwave amplifiers; Multiaccess communication; Power amplifiers; Signal analysis; Termination of employment; Transfer functions;
Conference_Titel :
Microwave Conference, 2001. APMC 2001. 2001 Asia-Pacific
Conference_Location :
Taipei
Print_ISBN :
0-7803-7138-0
DOI :
10.1109/APMC.2001.985648
