基于同轴波导的1分16功分器的设计与实验

杨梓晗; 张军; 张强; 周科霖; 冶玲; 赵立山

doi:10.11884/HPLPB202335.220275

基于同轴波导的1分16功分器的设计与实验

doi: 10.11884/HPLPB202335.220275

杨梓晗^1,,
张军²,
张强¹,
周科霖¹,
冶玲¹,
赵立山^1, ,

1.
国防科技大学前沿交叉学科学院，长沙 410073
2.
国防科技大学理学院，长沙 410073

基金项目: 国防科技大学前沿交叉学科学院重大基础自主研究项目

详细信息

作者简介:
杨梓晗，15234534500@163.com

通讯作者:
赵立山，lishanzhao@nudt.edu.cn

中图分类号: TN81
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- 文章访问数: 966
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- 被引次数: 0
出版历程
- 收稿日期: 2022-09-20
- 修回日期: 2022-11-30
- 网络出版日期: 2022-12-06
- 刊出日期: 2023-03-01

Design and experiment of 1∶16 power divider model based on coaxial waveguide

1.
College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, China
2.
College of Sciences, National University of Defense Technology, Changsha 410073, China

摘要

摘要: 针对高功率固态源多路功率分配技术的需要，设计并研究了一种基于同轴波导的多路功率分配器件。通过分析同轴波导传输特性与阻抗匹配理论，利用电磁仿真软件设计了一种S波段1分16功分器模型，并加工出实物进行实验测试。实验结果表明：该功分器在2.28～2.86 GHz，相对带宽约23%频率范围内，输入端反射系数S₁₁≤−15 dB；在2.37～2.57 GHz，相对带宽约8.1%频率范围内，输入端反射系数S₁₁≤−20 dB；输出幅度不平衡度±0.1 dB，相位不平衡度±5°。该功分器满足输出幅度与相位一致性要求，可应用于S波段百瓦级连续波功率分配。
- 功分器 /
- 合路器 /
- 连续波 /
- 高功率微波 /
- 同轴波导
Abstract: To meet the needs of multi-way power distribution applied to high-power solid-state sources, a multi-way power distribution device based on coaxial waveguide is designed and studied. By analyzing the transmission characteristics of coaxial waveguides and by applying the theory of impedance matching, an S-band 1∶16 power divider is designed by electromagnetic simulation software. Moreover, the device is machined for testing. Experimental results show that the reflection coefficient S₁₁ of the power divider is less than −15 dB in the range of 2.28 GHz to 2.86 GHz (the relative bandwidth is 23%). In the range of 2.37 GHz to 2.57 GHz (the relative bandwidth is 8.1%), the reflection coefficient S₁₁ of the input port is less than −20 dB, with the amplitude imbalance ±0.1 dB and phase imbalance ±5° at the output ports. To sum up, the power divider meets the amplitude and phase consistency requirements at output ports and can be applied to S-band hundred-watt continuous wave power distribution.
- power divider /
- power combiner /
- continuous wave /
- high power microwave /
- coaxial waveguide

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图 1 功分器的基本结构

Figure 1. Basic structure of power divider

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图 2 功分器的结构参数

Figure 2. Structural parameters of power divider

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图 3 输入端N型接头模型

Figure 3. Designed N-type connector model

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图 4 功分器电场分布

Figure 4. Electric field distribution of power divider

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图 5 N型接头实物

Figure 5. Designed N-type connector

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图 6 功分器实物

Figure 6. Machined power divider

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图 7 反射损耗与传输系数

Figure 7. Return loss (S₁₁) and transmission coefficients (S_n,1)

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图 8 输出相位测量结果

Figure 8. Measured phase at output ports

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图 9 实验设计

Figure 9. Experimental setup

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表 1 各输出端口的传输系数和相位(2.45 GHz)

Table 1. Transmission coefficients and phase at output port (2.45 GHz)

port number n	transmission coefficients S_n,1/dB	phase/(°)	port number n	transmission coefficients S_n,1/dB	phase/(°)
2	−12.07	179.9	10	−12.03	178.6
3	−12.14	−179.9	11	−12.00	176.1
4	−12.00	178.7	12	−12.30	−179.9
5	−12.01	−177.4	13	−12.03	175.7
6	−12.00	−177.5	14	−12.11	178.1
7	−12.08	−176.7	15	−12.10	180.0
8	−12.03	−178.6	16	−12.06	−175.9
9	−12.04	−179.5	17	−12.07	178.8

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表 2 功分器连续波条件下输入功率与反射功率的关系(2.45 GHz)

Table 2. Measured input power and reflected power of power divider (2.45 GHz, CW)

input power/W	reflected power/W	input power/W	reflected power/W
66	1.1	201	3.6
77	1.3	238	4.3
92	1.5	277	5.1
107	1.8	325	5.9
127	2.2	354	6.7
147	2.5	385	7.5
175	3.0

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参考文献(15)

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