Doherty Power Amplifier with Feedforward Linearization

被引：0
|
作者：
Xiang, Yong-Bo [1 ]
Wang, Guang-Ming [1 ]
机构：
[1] AFEU Univ, Appl Microwave Lab, Xian, Peoples R China
来源：
APMC: 2009 ASIA PACIFIC MICROWAVE CONFERENCE, VOLS 1-5 | 2009年
关键词：
Doherty amplifier; efficiency; feedforward; GSM base-station; IMD cancellation; linearization; multi-carrier;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This paper presents a high efficiency feedforward power amplifier with Doherty technique for multi-carrier GSM base-station. The main Doherty power amplifier (DPA) was designed with third-order intermodulation distortion (IMD3) cancellation technique and tunable power division for optimized linearity and efficiency. The error amplifier was selected based on IMD3 analysis for higher efficiency. Two tone test show the amplifier has an efficiency of 27.2% and an IMD3 below -62.5dBc at 80W overall output power, the efficiency is much higher than traditional feedforward amplifiers.
引用
收藏
页码：1621 / 1624
页数：4
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