摘要
提出了新的带外信号检测方法和自适应模拟预失真线性化技术,并应用于CDMA直放站的5 W自适应射频线性功率放大器.通过自适应检测和自适应预失真控制,有效抑制临信道频谱再生,使输出信号的3阶和5阶交调失真分别改善8 dBc和6 dBc.
This paper presents a new out-of-band signal detection method and linearization technology of adaptive analog predistortion applied in 5 watts adaptive RF linearized power amplifier of CDMA repeater. To effectively suppress the spectral regrowth in the adjacent channels, the 3rd and 5th inter-modulation distortions have been improved respectively by 8 dBc and 6 dBc after adaptive detection and adaptive distortion control.
出处
《同济大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2005年第10期1377-1379,共3页
Journal of Tongji University:Natural Science
关键词
射频信号
预失真线性化
互调失真
载波抵消
radio frequency signal
predistortion linearization
intermodulation distortion
carrier cancellation
