X波段高功率宽带选模定向耦合器

喻寄航; 宫玉彬; 王战亮; 余川; 廖勇

doi:10.11884/HPLPB201830.170343

X波段高功率宽带选模定向耦合器

doi: 10.11884/HPLPB201830.170343

喻寄航^{1, 2,},
宫玉彬¹,
王战亮¹,
余川²,
廖勇²

1.
电子科技大学物理电子学院, 成都 610054
2.
中国工程物理研究院应用电子学研究所, 四川绵阳 621900

基金项目:

国家自然科学基金项目 11505043

详细信息

作者简介:
喻寄航(1993－), 男，硕士，从事高功率微波技术研究；yujihang@hotmail.com

中图分类号: TN321.5
计量
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- 被引次数: 0
出版历程
- 收稿日期: 2017-08-31
- 修回日期: 2017-09-27
- 刊出日期: 2018-02-15

X-band high power broadband mode-selective directional coupler

1.
School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China
2.
Institute of Applied Electronics, CAEP, P.O.Box 919-1015, Mianyang 621900, China

摘要

摘要: 过模圆波导在提高功率容量的同时，不可避免地会造成微波源中同时存在多种模式。为了监测X波段长脉冲高功率微波源TM₀₁模的输出功率和频谱，采用CST软件仿真设计了X波段高功率宽带选模定向耦合器，在耦合TM₀₁模的同时可实现对TM₀₂和TE₁₁模的抑制。波导腔体及耦合孔的尺寸以小孔耦合理论和相位叠加原理为基础并结合切比雪夫分布函数计算确定。仿真结果表明：该高功率宽带选模定向耦合器在9.0~9.8 GHz的带宽范围内，耦合度为(-59.08±1) dB，定向性大于30 dB，对TE₁₁模的抑制度大于15 dB，对TM₀₂模的抑制度大于30 dB，功率容量大于2.5 GW。
- 高功率 /
- TM01模 /
- 宽带 /
- 耦合器 /
- 抑制度
Abstract: The overmoded circular waveguide can achieved high power capacity, which will inevitably lead to high order mode. In order to monitor the output power and frequency spectrum of the X-band long pulse high power microwave source, an X-band high power microwave broadband mode selection directional coupler was designed by the simulation of CST software, which is used to couple TM₀₁ mode and suppress the TM₀₂ and TE₁₁ mode. The sizes of waveguide and coupling hole were decided by the small coupling theory and phase superposition principle. At the central frequency range of 9.0-9.8 GHz, the simulation results show that the coupling degree of the coupler is about (-59.08±1) dB, the directivity of TM₀₁ mode is more than 30 dB, the suppression of TE₁₁ mode is more than 15 dB, and the suppression of TM₀₂ mode is more than 30 dB, the power handling capacity is 2.5 GW.
- high power /
- TM01 mode /
- broadband /
- coupler /
- suppression

HTML全文

图 1 X波段高功率宽带TM₀₁模定向耦合器结构示意图

Figure 1. Schematic diagram of coupler

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图 2 双孔耦合器TM₀₁模隔离度随频率变化曲线

Figure 2. S_{4(1), 1(2)} of TM₀₁ mode vs frequency in two-hole coupler

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图 3 单组耦合器的仿真结果

Figure 3. Simulation result in coupler with one group of holes

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图 4 双组耦合器TE₁₁模的隔离度随频率变化曲线

Figure 4. S_{3(1), 1(1)} of TE₁₁ mode vs frequency in coupler with two group of holes

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图 5 双组耦合器的仿真结果

Figure 5. Simulation result in coupler with two group of holes

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图 6 9.4 GHz时耦合器内的场强分布

Figure 6. E-field distribution in coupler at 9.4 GHz

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参考文献(11)

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