Design of a Broadband High-Efficiency Power Amplifier Based on a Miniaturized Three-Coupled Line Structure

IF 1.6 3区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

International Journal of Circuit Theory and Applications Pub Date : 2025-01-12 DOI:10.1002/cta.4428

Luyu Zhang, Zhiwei Zhang, Dengfa Zhou, Chenlu Wang, Chao Gu

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Abstract

The extended continuous inverse Class-GF mode with a large available impedance space is employed in the design of the multioctave power amplifier (PA) presented in this paper. A novel miniaturized three-coupled line structure is combined with the extended continuous inverse Class-GF mode to achieve ultra-wideband high-efficiency PAs. The novel miniaturized three-coupled line structure is analyzed in detail to meet the design requirements. To verify the effectiveness of the proposed method, a PA working in 0.7–3.0 GHz with a relative bandwidth of 124.3% is designed and fabricated by using CGH40010F. Measurements demonstrate that the output power is from 39.8 to 42.3 dBm, the drain efficiency is between 63.2% and 73.1%, the power added efficiency is from 60.4% to 71.3%, and the gain is from 9.7 to 12.3 dB. The designed PA achieves wide bandwidth and high efficiency while effectively reducing size to facilitate integration.

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基于小型化三耦合线路结构的宽带高效功率放大器设计

本文将具有较大可用阻抗空间的扩展连续逆类- gf模式应用于多倍频程功率放大器的设计中。将一种新型的小型化三耦合线路结构与扩展的连续逆类- gf模式相结合，实现了超宽带高效PAs。对新型小型化三耦合线结构进行了详细分析，以满足设计要求。为了验证该方法的有效性，利用CGH40010F设计并制作了一个工作在0.7 ~ 3.0 GHz、相对带宽为124.3%的PA。测量结果表明，输出功率范围为39.8 ~ 42.3 dBm，漏极效率范围为63.2% ~ 73.1%，附加功率效率范围为60.4% ~ 71.3%，增益范围为9.7 ~ 12.3 dB。所设计的PA在实现宽带宽和高效率的同时，有效地减小了尺寸，便于集成。

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来源期刊

International Journal of Circuit Theory and Applications 工程技术-工程：电子与电气

CiteScore

3.60

自引率

34.80%

发文量

277

审稿时长

4.5 months

期刊介绍： The scope of the Journal comprises all aspects of the theory and design of analog and digital circuits together with the application of the ideas and techniques of circuit theory in other fields of science and engineering. Examples of the areas covered include: Fundamental Circuit Theory together with its mathematical and computational aspects; Circuit modeling of devices; Synthesis and design of filters and active circuits; Neural networks; Nonlinear and chaotic circuits; Signal processing and VLSI; Distributed, switched and digital circuits; Power electronics; Solid state devices. Contributions to CAD and simulation are welcome.