深圳大学学报理工版

大功率和宽频带是太赫兹放大器追求的两个核心指标,基于交错栅慢波结构的带状注行波管兼具两者,是一种非常有竞争力的太赫兹放大器.研究交错栅慢波结构的色散特性、耦合阻抗特性、传输反射特性以及注波互作用特性,通过优化结构参数以及引入介质衰减器,实现该管宽频带内的大功率稳定输出.仿真结果表明,该管在220～260 GHz的输出功率可达105 W以上.所做工作为研究宽频带和大功率太赫兹放大管奠定良好基础.

High power and broad bandwidth are two core targets for a terahertz amplifier. A sheet beam travelling wave tube based on a staggered double vane slow wave structure possesses the two advantages mentioned above and is a very competitive high power terahertz amplifier. The dispersion characteristic, coupling impedance property, transmission and reflection properties and beam wave interaction property are investigated. The tube achieves high output power in a very broad frequency range by optimizing the structural parameters and introducing a dielectric attenuator. Simulation results show that the tube can generate the output power of more than 105 W in the frequency range from 220 GHz to 260 GHz. This work has laid a good foundation for the study of terahertz amplifiers with broad bandwidth and high power.

引言
1 交错栅慢波结构冷腔分析
2 注波互作用热腔分析
3 结语

图1 交错栅慢波单元<br/>Fig.1 Single cell of a staggered double vane slow wave structure

图1 交错栅慢波单元
Fig.1 Single cell of a staggered double vane slow wave structure

图2 慢波单元结构参数对耦合阻抗和色散特性的影响.<br/>Fig.2 Dispersion characteristic and coupling impedance property dependent on structural parameters

图2 慢波单元结构参数对耦合阻抗和色散特性的影响.
Fig.2 Dispersion characteristic and coupling impedance property dependent on structural parameters

图3 色散特性及耦合阻抗特性<br/>Fig.3 Dispersion characteristic and coupling impedance property

图3 色散特性及耦合阻抗特性
Fig.3 Dispersion characteristic and coupling impedance property

图4 PIC注波互作用仿真模型<br/>Fig.4 PIC beam wave interaction simulation model

图4 PIC注波互作用仿真模型
Fig.4 PIC beam wave interaction simulation model

图5 衰减器参数对慢波结构S参数的影响.<br/>Fig.5 S-parameters dependent on the parameters of attenuators

图5 衰减器参数对慢波结构S参数的影响.
Fig.5 S-parameters dependent on the parameters of attenuators

图6 慢波结构传输反射特性<br/>Fig.6 Transmission-reflection property of slow wave structure

图6 慢波结构传输反射特性
Fig.6 Transmission-reflection property of slow wave structure

图7 f=0.24 THz时PIC模拟结果<br/>Fig.7 PIC simulation results at f=0.24 THz

图7 f=0.24 THz时PIC模拟结果
Fig.7 PIC simulation results at f=0.24 THz

图8 电子注参数对注波互作用性能的影响<br/>Fig.8 Performance of the beam-wave interaction dependent on electron beam parameters

图8 电子注参数对注波互作用性能的影响
Fig.8 Performance of the beam-wave interaction dependent on electron beam parameters

图9 不同频率处的整管性能<br/>Fig.9 Tube performance at different frequencies

图9 不同频率处的整管性能
Fig.9 Tube performance at different frequencies

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备注

引言

1 交错栅慢波结构冷腔分析

2 注波互作用热腔分析

3 结语

期刊信息

备注

引言

1 交错栅慢波结构冷腔分析

2 注波互作用热腔分析

3 结 语

期刊信息

3 结语