5G宽带多尔蒂功率放大器设计研究

2022 International Conference on Electrical and Computing Technologies and Applications (ICECTA) Pub Date : 2022-11-23 DOI:10.1109/ICECTA57148.2022.9990305

A. Jarndal, K. Husna Hamza

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引用次数: 0

摘要

针对5G应用，对GaN HEMT Doherty功率放大器(DPA)进行了设计和分析。研究了克服DPA的带宽限制特性的不同方法。使用的第一种技术是在载波和峰值放大器的输出端增加低通滤波器。第二种方法是在载波和调峰放大器的输出端分别增加并联短路短线。第三种技术是在调峰放大器的输出端增加两段传输线。这三种电路配置在Keysight Advanced Design System软件中进行了仿真，采用GaN HEMT Cree型号CGH40006P作为载波和峰值放大器。并在6ghz频率下与传统DPA进行了性能比较。在峰值放大器的输出端有两段传输线的DPA显示出2ghz的3db带宽。此外，考虑到5G应用的GaN dpa的最新状态，对结果进行了评估。

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On the Design of Broadband Doherty Power Amplifier for 5G Applications

The design and analysis of GaN HEMT Doherty power amplifier (DPA) is done for 5G application. Different methods are investigated for overcoming the bandwidth limiting property of the DPA. The first technique used is the addition of low pass filter at the output terminal of both the carrier and peaking amplifier. The second technique is the addition of shunt short circuit stub each at the output terminal of carrier and peaking amplifier. And the third technique is to add two sections of transmission lines at the output terminal of peaking amplifier. These three circuit configurations were simulated in Keysight Advanced Design System software using the GaN HEMT Cree model CGH40006P as the carrier and peaking amplifiers. The performances were compared with the conventional DPA at 6 GHz frequency. The DPA with the two sections of transmission line at the output of the peaking amplifier exhibited the 3 dB bandwidth of 2 GHz. Besides the results were evaluated considering the state of the art of GaN DPAs for 5G applications.

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2022 International Conference on Electrical and Computing Technologies and Applications (ICECTA)

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