Design of a High-Efficiency Extended Continuous-Mode Inverse Class-GF Power Amplifier With Enhanced Bandwidth

IF 3.4 0 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE microwave and wireless technology letters Pub Date : 2025-04-29 DOI:10.1109/LMWT.2025.3559999

Zhenghua Wei;Qiang Liu;Guangxing Du;Guolin Li;Wang Liu

引用次数: 0

Abstract

This letter provides an extended continuous-mode inverse class-GF (ECCGF⁻¹) concise theory for the design of a high-efficiency power amplifier (PA) with enhanced bandwidth. Compared with the typical continuous-mode inverse class-GF (CCGF⁻¹), a broader design space considering input nonlinearity is explored by simplified formulas based on the harmonic components of the drain current in class-GF⁻¹. Moreover, the problem of current overshoot can be alleviated in ECCGF⁻¹. For verification, a prototype is designed and fabricated by using a 10-W GaN HEMT device. The measured results show that the output power of 39.8–42.2 dBm, drain efficiency (DE) of 61%–78.6%, and gain of 9.8–12.2 dB are achieved over the relative bandwidth (RBW) of 136.8% from 0.6 to 3.2 GHz. In contrast with the other types of PA, the design exhibits a wider bandwidth and comparable efficiency.

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增强带宽的高效扩展连续模逆gf类功率放大器的设计

本文提供了一个扩展的连续模式反类- gf （ECCGF−1）简明理论，用于设计具有增强带宽的高效功率放大器（PA）。与典型的连续模逆变型gf （CCGF−1）相比，通过基于gf−1类漏极电流谐波分量的简化公式，探索了考虑输入非线性的更广阔设计空间。此外，在ECCGF−1中可以缓解电流过调的问题。为了验证，使用10 w GaN HEMT器件设计和制造了原型。测量结果表明，在0.6 ~ 3.2 GHz的相对带宽（RBW）为136.8%的范围内，输出功率为39.8 ~ 42.2 dBm，漏极效率（DE）为61% ~ 78.6%，增益为9.8 ~ 12.2 dB。与其他类型的PA相比，该设计具有更宽的带宽和相当的效率。

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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来源期刊

IEEE microwave and wireless technology letters

CiteScore

6.00

自引率

0.00%

发文量