Linearization of Dual-Input Doherty Power Amplifiers

被引:0
|
作者
Cahuana, Jessica Chani [1 ]
Landin, Per [1 ]
Gustafsson, David [1 ]
Fager, Christian [1 ]
Eriksson, Thomas [1 ]
机构
[1] Chalmers, GigaHertz Ctr, S-41296 Gothenburg, Sweden
关键词
digital Doherty; digital predistortion; dual-input Doherty; linearization; power amplifiers; EFFICIENCY;
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 studies the linearity of dual-input Doherty power amplifiers. We propose a linearization scheme that uses a combination of an efficiency-optimized static splitter and a vector-switched digital predistorter. The performance of the proposed linearization scheme is evaluated on a dual-input Doherty power amplifier operating at 2.0 GHz with 42 dBm peak output power. Experimental results show that the proposed linearization scheme achieves a normalized mean square error of -43.7 dB and an adjacent channel power ratio of -55.8 dBc with a power added efficiency of 42.4%.
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页数:3
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