一种小单元应用的全集成高效三级多尔蒂功率放大器

2021 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2021-11-28 DOI:10.1109/iwem53379.2021.9790358

Shunping Wan, Wen-hua Chen, Guansheng Lv, Long Chen, Zhenghe Feng

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引用次数: 1

摘要

本文设计了一种用于5G小蜂窝基站(SBSs)应用的高性能三级Doherty功率放大器，并采用GaAs HBT技术完全制造，尺寸为2.2 × 3mm2。利用非对称结构和均匀的功率分割，获得了较深的回退区和良好的性能。采用最优输出匹配网络克服了输出功率大的问题。测试结果表明，对于20MHz长期演化信号，峰值平均功率比为8db，平均功率增加效率(PAE)达到30%以上，功率增益达到34dB。未进行线性化处理的相邻通道泄漏比为-30.2 dBc，通过数字预失真线性化处理将其提高到-50.3 dBc。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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A Fully Integrated High-Efficiency Three-stage Doherty Power Amplifier for Small-cell application

In this paper, a high-performance three-stage Doherty power amplifier was designed for 5G small-cell base station (SBSs) applications and fully fabricated in GaAs HBT technology with a dimension of 2.2 × 3mm2. An asymmetric configuration and even power splitting was utilized to get deeply back-off region and good performance. An optimal output match network is applied to overcome the problem from high output power. Test results show that the average power-add efficiency (PAE) above 30% and power gain of 34dB were attained for a 20MHz long-term evolution signal with an 8-dB peak-to-average power ratio. The adjacent channel leakage ratio was -30.2 dBc without any linearization, and it was improved to -50.3 dBc with a digital pre-distortion linearization.

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来源期刊

2021 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)

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