RF PA Predistortion using Non-Linear RF-DACs

被引：2

作者：

Aberg, Victor ^{[1
]}

Zhou, Han ^{[1
]}

Fager, Christian ^{[1
]}

Svensson, Lars ^{[1
]}

机构：

[1] Chalmers Univ Technol, Gothenburg, Sweden

来源：

2022 IEEE NORDIC CIRCUITS AND SYSTEMS CONFERENCE (NORCAS) | 2022年

关键词：

Linearization; Non-linear scaling; Power amplifier (PA); Predistortion; RF-DAC;

D O I：

10.1109/NORCAS57515.2022.9934679

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

Analog and/or digital predistortion may be used to linearize power amplifiers (PAs) at the cost of additional hardware. We present a novel scheme which uses segmented non-linear RF-DACs to linearize PAs at no additional hardware cost. An expanding segmented scaling chosen at design time may be adjusted using DAC bias, allowing linearization to be adapted. Simulations demonstrate the robustness and flexibility of the approach, achieving excellent overall linearity over a large range of DAC and PA bias conditions.

引用

页数：6

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