Design and Experimental Demonstration of a Circular Beam Electron Gun and a PPM System for D-Band TWTs

被引：6

作者：

Guo, Zugen ^{[1
]}

Zhang, Ruifeng ^{[1
]}

Lai, Han ^{[1
]}

Lan, Feng ^{[1
]}

Wang, Zhanliang ^{[1
]}

Lu, Zhigang ^{[1
]}

Duan, Zhaoyun ^{[1
]}

Gong, Yubin ^{[1
]}

Gong, Huarong ^{[1
]}

机构：

[1] Univ Elect Sci & Technol China, Sch Elect Sci & Engn, Natl Key Lab Sci & Technol Vacuum Elect, Chengdu 610054, Peoples R China

来源：

IEEE TRANSACTIONS ON ELECTRON DEVICES | 2023年 / 70卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Cathodes; Electron guns; Magnetic fields; Electron beams; Focusing; Current density; Simulation; Electron gun; electron-optical system (EOS); periodic permanent magnet (PPM); terahertz vacuum electron amplifiers; traveling-wave tube (TWT); TRAVELING-WAVE TUBE;

D O I：

10.1109/TED.2023.3262596

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：

In this article, we present a design scheme of an electron-optical system (EOS) for terahertz vacuum electron amplifiers. The performance characteristics are studied by simulation, and the feasibility is verified by transmission experiment. Based on the Pierce design method, an electron gun with an isolated beam focus electrode (BFE) is designed, which has been simulated and confirmed by CST particle tracking solver and OPERA charged particle solver. A periodic permanent magnet (PPM) system including dual D-magnets of RF signal coupling port is utilized for focusing beam transportation in the 0.15-mm-radius tunnel. The experimental results of the magnetic field are in good agreement with the simulation results. The simulation results show that the beam-focusing system with the axial peak magnetic field of 5.2 kGs can confine the electron beam within the beam tunnel. Additionally, the EOS is successfully developed and used in the D-band folded waveguide traveling-wave tube (TWT). The experimental results of electron transmission show that the thermionic cathode with a cathode load of 5 A/cm $<^>{\text{2}}$ can provide a beam current of 56 mA, and 90% beam current is transmitted through the beam tunnel to the collector.

引用

页码：2753 / 2759

页数：7

共 35 条

[1]

3ds, OP

[2] Low Cost Electron Gun for D-band Traveling Wave Tubes [J].

Basu, Rupa ;

Rao, Jeevan M. ;

Letizia, Rosa ;

Paoloni, Claudio .

IVEC 2021: 2021 22ND INTERNATIONAL VACUUM ELECTRONICS CONFERENCE, 2021,

[3] Development of a D-Band Traveling Wave Tube for High Data-Rate Wireless Links [J].

Basu, Rupa ;

Rao, Jeevan M. ;

Le, Trung ;

Letizia, Rosa ;

Paoloni, Claudio .

IEEE TRANSACTIONS ON ELECTRON DEVICES, 2021, 68 (09) :4675-4680

[4] Demonstration of a Pulsed G-Band 50-W Traveling Wave Tube [J].

Bian, Xingwang ;

Pan, Pan ;

Tang, Ye ;

Lu, Qiru ;

Li, Ying ;

Zhang, Lin ;

Wu, Xianping ;

Cai, Jun ;

Feng, Jinjun .

IEEE ELECTRON DEVICE LETTERS, 2021, 42 (02) :248-251

[5] Vacuum Electronic High Power Terahertz Sources [J].

Booske, John H. ;

Dobbs, Richard J. ;

Joye, Colin D. ;

Kory, Carol L. ;

Neil, George R. ;

Park, Gun-Sik ;

Park, Jaehun ;

Temkin, Richard J. .

IEEE TRANSACTIONS ON TERAHERTZ SCIENCE AND TECHNOLOGY, 2011, 1 (01) :54-75

[6] Plasma physics and related challenges of millimeter-wave-to-terahertz and high power microwave generation [J].

Booske, John H. .

PHYSICS OF PLASMAS, 2008, 15 (05)

[7]

Carter R. G., 2018, Microwave and RF Vacuum Electronic Power Sources, DOI [10.1017/9780511979231, DOI 10.1017/9780511979231]

[8] A High-Current-Density Electron Beam for Millimeter-Wave Amplifiers [J].

Cook, Alan M. ;

Wright, Edward L. ;

Nguyen, Khanh T. ;

Joye, Colin D. ;

Rodgers, John C. ;

Jaynes, Reginald L. ;

Atkinson, John ;

Kimura, Takuji .

IEEE TRANSACTIONS ON ELECTRON DEVICES, 2021, 68 (06) :3040-3044

[9]

CST Particle Studio, CST COMP SIM TECHN G

[10]

CUTLER CC, 1955, P IRE, V43, P306

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