一种波形工程方法,用于 GaN MMIC Doherty功率放大器的 F 类运行在 C 类偏差峰分支中的 F 类运行
Francesco Manni1, Paolo Colantonio1, Vittorio Camarchia2
1Department of Electronics Engineering, University of Rome Tor Vergata, 00133, Rome, Italy.
Scientific reports
|April 2, 2025
概括
本研究介绍了一种新的多赫蒂功率放大器设计,使用非线性驱动器阶段来提高性能. 这种方法实现了高输出功率和效率,这对于现代无线通信系统至关重要.
科学领域:
- 电气工程 电气工程
- 射频和微波工程 射频和微波工程
背景情况:
- 多赫蒂功率放大器 (DPA) 对于无线系统中高效功率放大至关重要.
- 提高DPA的性能,特别是效率和线性,仍然是关键的研究领域.
研究的目的:
- 介绍多赫蒂功率放大器的新设计策略.
- 通过在峰值分支中加入非线性驱动器阶段来提高DPA的性能.
- 通过使用C类偏差装置,使峰值最后阶段的F类波终结成为可能.
主要方法:
- 使用非线性驱动器阶段,在输入处注入第三波电压元件.
- 这种注入会在输出处逆转第三波电流的相位,从而促进F类操作.
- 理论分析与设备和电路层面的实验验证相结合.
主要成果:
- 一个X波段单立体微波集成电路 (MMIC) 的原型是使用120nm的GaN-on-SiC技术开发的.
- 在10GHz时,MMIC实现了超过36dBm的输出功率和40%的效率.
- 对于调制信号 (10 MHz带宽,6 dB PAPR), -30 dBc ACPR 实现了>32 dBm的平均输出功率和>32%的效率.
结论:
- 拟议的设计策略有效地提高了多赫蒂功率放大器的性能.
- 这种方法使F类与C类偏差设备的操作成为可能,从而在功率和效率方面取得了显著的改进.
- 结果表明,这种技术对于高性能射频应用 (如X频段通信) 的可行性.
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