调整初相提高多频点信号功率利用率的方法  

Improving Power Efficiency of Multi-frequency Signal by Adjusting Initial Phases

作　　者：李大芳[1] 贾坤[1] 

机构地区：[1]中国西南电子技术研究所,成都610036

出　　处：《电讯技术》2012年第3期333-337,共5页Telecommunication Engineering

摘　　要：通过分析信号初相与多频率合成信号包络的关系,提出利用初相调整的方法来优化合成信号包络,从而提高功放的功率利用率。仿真分析结果和实际应用表明,该方法可以很好地降低合成信号包络的最大电平,使合成信号包络尽可能在放大器的线性范围内,从而有效抑制了交调和互调成分以及谐波成分,提高了功率利用率。Through analysing the relationship between the initial phases and the multi- frequency signal＇s envel- op, initial phases adjustment method is proposed to optimize the multi - frequency signal＇s envelop, accordingly improve the power amplifier＇s power efficiency. The simulation result and the actual application indicate that this method can depress the level of multi - frequency signal＇s envelop effectively, and makes the multi - frequency signal＇s envelop in the power amplifier＇s linear range, so as to effectively restrain the cross modulation and inter modulation, and the harmonic, then improve the power efficiency.

关 键 词：功率放大器 功率利用率 多频率合成信号 包络优化 初相调整 

分 类 号：TN83[电子电信—信息与通信工程] TN97