A LTE Doherty Power Amplifier using Envelope Tracking Technique

摘要：

　　Along with the development of Long term evolution(LTE)communication system,higher linearity and efficiency of base station power amplifier required.Although,Conventional Doherty amplifier base station cant meet this requirement.For the first time,This is the first use of Envelope tracking(ET)technology is used to dynamically control the gate voltage of Doherty power amplifier peak amplifier: at low power input,low voltage is supplied to the peaking amplifier,aiming to improve efficiency: on the other hand,at high power input,high voltage is supplied to the peaking amplifier to obtain high efficiency.Compared with the traditional power amplifier,the new design could improve the linearity without decreasing efficiency.In this paper,the design and simulation is conducted by Rogers 4350,and the third-order inter-modulation distortion(IMD3)is improved by 5-dBc with remaining the high efficiency.Physical test and simulation results are in good agreement with this articles index.

关键词： ET-Doherty IMD3 PAE

作者: Zihao Zhang Zhenyu Xin

作者单位: University of Electronic Science and Technology of China UESTC Chengdu,China

会议类型: 国际会议

会议名称: The 15th International Conference on Electronic Packaging Technology (ICEPT 2014) ) (第十五届电子封装技术国际会议)

会议地点: 成都

会议语种:英文

页码: 1331-1334

在线出版日期: 2014-08-12（万方平台首次上网日期，不代表论文的发表时间）