Title :
A spectrum approach to the design of RF power amplifier for CDMA signals
Author :
Xiao, Heng ; Wu, Qiang ; Li, Fu
Author_Institution :
Dept. of Electr. Eng., Portland State Univ., OR, USA
Abstract :
We analyse the nonlinear effect of an RF power amplifier on CDMA signals and then derive an expression of an estimation of the out-of-band emission levels for CDMA signals in terms of the power transistor´s traditional nonlinearity parameters, the third-order intermodulation coefficient (IP3) and the fifth-order intermodulation coefficient (IP5), as well as the power level and bandwidth of the signal. This result will be useful to system and component engineers in the design and test of RF power amplifiers for cellular CDMA wireless system
Keywords :
UHF power amplifiers; cellular radio; code division multiple access; intermodulation distortion; spectral analysis; CDMA signals; RF power amplifier; cellular radio; emission estimation; fifth-order intermodulation coefficient; nonlinear effect; nonlinearity parameters; power level; power transistor; signal bandwidth; spectrum approach; third-order intermodulation coefficient; Bandwidth; Design engineering; Multiaccess communication; Power amplifiers; Power engineering and energy; RF signals; Radio frequency; Radiofrequency amplifiers; Signal analysis; Systems engineering and theory;
Conference_Titel :
Statistical Signal and Array Processing, 1998. Proceedings., Ninth IEEE SP Workshop on
Conference_Location :
Portland, OR
Print_ISBN :
0-7803-5010-3
DOI :
10.1109/SSAP.1998.739352
