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

来源：

2014 INTERNATIONAL WORKSHOP ON INTEGRATED NONLINEAR MICROWAVE AND MILLIMETRE-WAVE CIRCUITS (INMMIC) | 2014年

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%.

引用

页数：3

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