一种非接触式GW级高功率微波在线耦合测量结构设计与测试方法

吴少彤; 苏建仓; 李锐; 程杰; 胡祥刚; 李梅; 徐秀栋

doi:10.11884/HPLPB202537.240386

一种非接触式GW级高功率微波在线耦合测量结构设计与测试方法

doi: 10.11884/HPLPB202537.240386

西北核技术研究所先进高功率微波技术重点实验室，西安 710024

详细信息

作者简介:
吴少彤，wushaotong@nint.ac.cn

中图分类号: TN82
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- 文章访问数: 14
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- PDF下载量: 1
- 被引次数: 0
出版历程
- 收稿日期: 2024-11-06
- 修回日期: 2025-03-08
- 录用日期: 2024-12-04
- 网络出版日期: 2025-04-27

Design and testing method of a non-contact GW-level high-power microwave online coupling measurement structure

Key Laboratory of Advanced Science and Technology on High Power Microwave, Northwest Institute of Nuclear Technology, Xi’an 710024, China

摘要

摘要: 高功率微波(HPM)系统集成过程中，微波源与传输发射分系统的对接状态直接影响系统性能，不良的对接状态可能引发射频击穿，导致系统输出功率降低。因此，诊断系统的对接状态具有重要工程价值。为此，开展了非接触式高功率微波传输技术研究，并针对采用圆锥喇叭作为馈源的Ku波段GW级HPM系统，提出了一种馈源喇叭注入功率测量技术。基于仿真设计，完成该测量技术的关键组件研制，并开展了小信号测试和功率容量考核试验。试验结果表明，在（15±0.15） GHz范围内，该测量组件的反射系数小于−26 dB，耦合系数为（−0.31±0.07） dB，功率容量超过900 MW。实验和仿真结果证明,提出的测量技术具有耦合系数稳定、测试误差小等性能，能够有效地测量HPM源注入馈源喇叭的微波功率，并诊断HPM系统的对接状态。
- 高功率微波 /
- 在线耦合测量 /
- 馈源喇叭 /
- 对接状态 /
- 测量技术 /
- 功率容量
Abstract: During the integration of High Power Microwave (HPM) systems, the docking condition of the microwave source and the transmission-emission subsystem affects the HPM system performance directly. Poor docking conditions may cause radio frequency breakdown at the connection surface, which will result in the reduction of the entire system’s output power. Therefore, diagnosing the docking state of the system is of great engineering significance. For this reason, a non-contact high-power microwave transmission technology is investigated in this paper, and an injection power measurement method is proposed for a Ku-band GW-level HPM system using a conical horn as the feed source. Based on simulation designs, key subassembly of the technology was developed. In addition, the small signal test and power handling capacity assessment of the subassembly were carried out. The experimental outcomes demonstrated that the reflection coefficient was consistently below −26 dB, the coupling coefficient was (−0.31±0.07) dB within the frequency band of (15±0.15) GHz, and the power handling capacity exceeded 900 MW. The experimental and simulation results show that not only the proposed measurement technology has the characteristics of stable coupling coefficient and low test errors, but also can effectively measure the microwave power injected by HPM source through the feed-horn and diagnose the docking state of the HPM system.
- high power microwave /
- 111111 /
- feed-horn /
- docking condition /
- measurement technology /
- power handling capability

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图 1 原理构型示意图

Figure 1. Principle configuration diagram

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图 2 耦合测量组件结构示意图

Figure 2. Structure diagram of coupling measurement subassembly

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图 3 参数化仿真模型

Figure 3. Parametric simulation model

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图 4 S参数仿真结果

Figure 4. Simulation S-parameter results

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图 5 耦合测量组件电场分布

Figure 5. Coupling measurement subassembly electric field distribution

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图 6 耦合测量组件照片

Figure 6. Coupling measurement subassembly photo

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图 7 小信号试验

Figure 7. Small signal experiment

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图 8 S参数测试结果

Figure 8. S-parameter test results

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图 9 试验波形图

Figure 9. Experimental waveform diagram

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图 10 试验原理图

Figure 10. Experimental schematic diagram

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图 11 HPM测试波形@50 Hz 1000-pulse operation

Figure 11. Test waveform under HPM@50 Hz 1000-pulse operation

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图 12 典型波形对比@50 Hz single-pulse operation

Figure 12. Typical waveform contrast @ 50 Hz single-pulse operation

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图 13 连接面状态照片

Figure 13. Status photo of connection surface

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表 1 参数设置

Table 1. Parameter setting

R_feed/mm	R_couple/mm	L₁/mm	L₂/mm	L₃/mm	H₁/mm	D_gap/mm
15	15	67.43	16.8	60	10.65	5.12

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表 2 试验数据

Table 2. Experimental data

Num.	Microwave source Operating Mode	P₁/dBm	P₂/dBm	S₀/dB	S_c/dB
1	50 Hz 1000-pulse operation	120.06	119.31	0.45	0.30
2		120.21	119.48	0.45	0.28
3		120.20	119.49	0.45	0.26
4		120.24	119.48	0.45	0.31
5		120.20	119.48	0.45	0.27

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