Study on W-Band Sheet Beam Metallic Grating Amplifier Based on Combined Cherenkov and Cyclotron Resonances

被引:0
作者
Li, Xiaofei [1 ,2 ,3 ]
Xue, Qianzhong [1 ,2 ]
Zhao, Ding [1 ]
机构
[1] Chinese Acad Sci, Aerosp Informat Res Inst, Key Lab Sci & Technol High Power Microwave Source, Beijing 100190, Peoples R China
[2] Univ Chinese Acad Sci, Sch Elect Elect & Commun Engn, Beijing 100049, Peoples R China
[3] Beijing Inst Astronaut Syst Engn, Beijing 100076, Peoples R China
基金
中国国家自然科学基金;
关键词
Gratings; Cyclotrons; Electron beams; Bandwidth; Simulation; Resonant frequency; Harmonic analysis; Combined resonance; sheet beam; single grating; staggered double grating; TRAVELING-WAVE TUBE; DISPERSION;
D O I
10.1109/TPS.2022.3151812
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
In principle, if the beam is with initial transverse and axial velocity as well as propagating in period slow wave circuits, the combined Cherenkov and cyclotron resonances will exist, and the interaction will be enhanced. To illustrate and understand the influence of the combined resonance on the performance of devices intuitively, W-band sheet beam amplifiers with single-grating and staggered double-grating slow wave structures based on combined resonance and Cherenkov resonance are all designed and simulated, respectively. The results show that gain, bandwidth, and efficiency can be improved by utilizing multiresonances compared with Cherenkov resonance, which shows the attractive performance of the combined resonance. For the single-grating amplifier (SGA), the gain, bandwidth, and efficiency are improved by 1.68 dB, 2 GHz, and 0.45%, respectively. For the staggered double-grating amplifier (SDGA), the gain, bandwidth, and efficiency are improved by 0.85 dB, 5 GHz, and 0.42%, respectively. Besides, the comparisons of SGA and SDGA based on combined resonance are also presented and analyzed to provide a reference for the project implementation.
引用
收藏
页码:817 / 824
页数:8
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