摘要
提高功率放大器效率主要有三种方案:Doherty技术、包络线消除与恢复技术和包络跟踪技术。其中,包络跟踪技术在性能和可实现性方面具有显著优势。为了降低包络跟踪技术的电能损耗,以进一步提高包络跟踪系统性能,文章设计了一种混合型包络跟踪电源电路。测试实验表明,该电源电路的效率达到60%、平均输出功率为1 W,可以在不同频率的输入下,保持稳定的传输效率和良好的输出波形线性度,适用于高效率功率放大器应用。
Three schemes for improving the efficiency of the power amplifier were introduced: Doherty technology, envelope elimination and recovery(EER) technology, and envelope tracking(ET) technology. It is shown that ET technology has significant advantages in term of performance and reliability. In order to save the power loss of envelope tracking technology and improve the performance of envelope tracking system, a hybrid ET power supply was proposed. Simulation and experimental results demonstrate that the proposed ET power supply achieves an output power of 1 W on a 5 Ω load resistance with a power efficiency of 60%. The efficiency and output linearity can keep stable under various input signal, which make it suitable for power amplifier applications.
作者
叶康林
王晓航
桑吉飞
YE Kanglin;WANG Xiaohang;SANG Jifei(Faculty of Electrical Engineering and Computer Science,Ningbo Univ.,Ningbo,Zhejiang315211,P.R.China;Hangzhou Institute of Technology,Xidian University,Hangzhou 311231,P.R.China)
出处
《微电子学》
CAS
北大核心
2022年第5期783-789,共7页
Microelectronics
基金
浙江省自然科学基金资助项目(LY20F010003)
宁波市自然科学基金资助项目(2021J058)。
