摘要
设计了一种双功率管互补式预失真功率放大器,并给出了温度补偿偏置电压的具体设计电路.通过实验证明了该放大器可在20 MHz信号带宽内改善放大器3阶互调指标10 dB,其温度补偿方式可使放大器在温度变化时3阶互调指标的变化保持在±1.5 dB以内.
A kind of predistortion power amplifier by two radio frequency transistors reciprocal compensating was designed. And the temperature compensation circuit was presented. This predistortion power amplifier is verified by many experiments to improve intermodulation distortion（IMD） by 10 dB for a 20 MHz signal bandwidth, and the temperature compensation circuit can maintain IMD change within ± 1.5 dB over the temperature range.
出处
《北京邮电大学学报》
EI
CAS
CSCD
北大核心
2005年第5期102-105,共4页
Journal of Beijing University of Posts and Telecommunications
关键词
偏置电压
预失真
温度补偿
3阶互调
bias
predistortion
temperature compensation
intermodulation distortion
