Design and simulation of a three-stub matching network for a high-power transmitter amplifier

doi:10.16568/j.0254-6086.202601010

Nuclear Fusion and Plasma Physics ›› 2026, Vol. 46 ›› Issue (1): 63-70.DOI: 10.16568/j.0254-6086.202601010

• Nuclear Fusion Engineering • Previous Articles Next Articles

Design and simulation of a three-stub matching network for a high-power transmitter amplifier

TANG Liang1, 2, ZHANG Ke-qing3, 4, ZHU Guang-hui5, QIN Cheng-ming2, ZHANG Xin-jun2,MAO Yu-zhou2, YUAN Shuai2, WANG Lei2, LIU Lu-nan2,YANG Hua2,ZHANG Wei2, ZHANG Kai2, LI Liang-liang1, 2

(1. University of Science and Technology of China, Hefei 230026;2. Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031;3. Hebei Key Laboratory of Compact Fusion, Langfang 065001;4. ENN Science and Technology Development Co., Ltd., Langfang 065001;5. Institute of Energy, Hefei Comprehensive National Science Center, Hefei 230031)

Received:2024-01-03 Revised:2025-05-20 Online:2026-03-15 Published:2026-03-12

高功率发射机放大器的三支节匹配器的设计与仿真

唐亮 1, 2，张克卿 3, 4，朱光辉 5，秦成明*2，张新军 2，毛玉周 2，袁帅 2，王磊 2，刘鲁南 2，杨桦 2，张伟 2，张开 2，李亮亮 1, 2

(1. 中国科学技术大学，合肥 230026；2. 中国科学院合肥物质科学研究院，合肥 230031；3. 河北省紧凑型聚变重点实验室，廊坊 065001；4. 新奥科技发展有限公司，廊坊 065001；5. 合肥综合性国家科学中心能源研究院，合肥 230031)

作者简介:唐亮(1997-)，男，安徽滁州人，硕士研究生，从事射频控制系统的研究。
基金资助:
国家自然科学基金(12205197)；国家重大科技基础设施 “ 聚变堆主机关键系统综合研究设施 ”

(2018-000052-73-01-001228)；国家重点研发计划(2016YFA0400600，2016YFA0400601)

Abstract

Abstract:

To effectively match the input impedance of the final stage tube to the characteristic impedance transmission line, it is necessary to develop a new wideband matching device applied to high-power tetrode amplifiers in transmitters for ion cyclotron resonance heating, ranging from hundreds of kilowatts to megawatts. A comprehensive approach combining RF transmission theory, circuit analysis, and 3D finite element simulation is employed to determine the optimal length of the short-circuited stubs at various operating frequencies. Additionally, an deep analysis of load impedance sensitivity is conducted. This research reveals discrepancies and limitations between theoretical calculations and 3D simulations, as well as experimental results, highlighting the importance of comprehensive consideration in the design of high-power transmitters.

Key words:

Transmitter, Impedance matching, Transmission line impedance, Three-stub matching, 3D finite element simulation

摘要：

为了实现末级电子管输入阻抗与特征阻抗传输线之间的高效匹配，需要开发一款适用于离子回旋共振加热的百千瓦至兆瓦级高功率发射机电子管放大器的新型宽频带匹配器。采用射频传输理论、电路分析及三维有限元仿真的综合方法，确定了不同工作频率下短路支节的理想长度，并对负载阻抗的敏感性进行了深入分析。研究揭示了理论计算与三维仿真及实验结果之间存在的偏差和局限，强调了在高功率发射机设计中进行全面考虑的重要性。

关键词:

发射机, 阻抗匹配, 传输线阻抗, 三支节匹配器, 三维有限元仿真

CLC Number:

TL62+4

TANG Liang , ZHANG Ke-qing , ZHU Guang-hui , QIN Cheng-ming , ZHANG Xin-jun , MAO Yu-zhou , YUAN Shuai , WANG Lei , LIU Lu-nan , YANG Hua , ZHANG Wei , ZHANG Kai , LI Liang-liang.

Design and simulation of a three-stub matching network for a high-power transmitter amplifier [J]. Nuclear Fusion and Plasma Physics, 2026, 46(1): 63-70.

唐亮, 张克卿, 朱光辉, 秦成明, 张新军, 毛玉周, 袁帅, 王磊, 刘鲁南, 杨桦, 张伟, 张开, 李亮亮, .

高功率发射机放大器的三支节匹配器的设计与仿真

[J]. 核聚变与等离子体物理, 2026, 46(1): 63-70.

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Design and simulation of a three-stub matching network for a high-power transmitter amplifier

高功率发射机放大器的三支节匹配器的设计与仿真

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