Comparative Study on the Nonlinear Theory and PIC Simulation of Confocal Gyro-TWAs

被引：0
|
作者：
Yao, Yelei [1 ]
Dai, Xinge [1 ]
Yan, Ran [1 ]
Luo, Yong [1 ]
Wang, Jianxun [1 ]
Liu, Guo [1 ]
Wang, Weijie [1 ]
Feng, Chengzhen [1 ]
Sun, Yibin [1 ]
机构：
[1] Univ Elect Sci & Technol China, Sch Elect Sci & Engn, Chengdu 610054, Peoples R China
来源：
IEEE TRANSACTIONS ON ELECTRON DEVICES | 2023年 / 70卷 / 01期
关键词：
Integrated circuit modeling; Radio frequency; Electron beams; Couplings; Zirconium; Mathematical models; Gyrotrons; Comparative study; efficiency profile; gyrotron traveling-wave amplifiers (gyro-TWAs); nonlinear theory; particle-in-cell (PIC) validation; saturation performance; WAVE; GAIN;
D O I：
10.1109/TED.2022.3224887
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The large-signal theory, including the BEAMLETS model and averaged coupling impedance formalism, of confocal gyrotron traveling-wave amplifiers (gyro-TWAs) with diffractive loss has been derived. As an example, a $\textit{W}$ -band gyro-TWA with uniform confocal circuits and curved-profile magnetic field is theoretically studied and then well validated by three-dimensional particle-in-cell (3-D-PIC) simulation in detail. The results predicted by our code achieve excellent agreement with the PIC simulation over 92-104 GHz regarding the electron efficiency and radio frequency (RF) wave efficiency profile along the circuit position and saturation amplification performance, with a saturation input power difference of less than 20%.
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页码：313 / 319
页数：7
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