Results 11 to 20 of about 252,539 (320)

From Mega to nano: Beyond one Century of Vacuum Electronics [PDF]

, 2022

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Session D: Vacuum electronics [PDF]

2013 International Kharkov Symposium on Physics and Engineering of Microwaves, Millimeter and Submillimeter Waves, 2013
M Glyavin, A Luchinin, M Morozkin, M Tani, T Kinoshita, T Nagase, Sh Ozawa, S Tsuzuki, D Takeshima, E Estacio, K Kurihara, K Yamamoto, M Bakunov, A Kuleshov, B Yefimov, S Filchenkov, M Petelin, A Sedov, N Zavolsky, Russian Gyrotrons, A Litvak, V Myasnikov, G Denisov, E Tai, V Zapevalov, M Agapova, A Chirkov, A Kufiin, V Nichiporenko, L Popov, E Soluyanova, S Usachev   +31 more
openaire   +2 more sources

Vacuum electronics [PDF]

IEEE Transactions on Microwave Theory and Techniques, 2002
R.K. Parker, R.H. Abrams, B.G. Danly, B. Levush   +3 more
openaire   +3 more sources

A G-Band Broadband Continuous Wave Traveling Wave Tube for Wireless Communications

Micromachines, 2022
Development of a G-band broadband continuous wave (CW) traveling wave tube (TWT) for wireless communications is described in this paper. This device provides the saturation output power over 8 W and the saturation gain over 30.5 dB with a bandwidth of 27
Yuan Feng, Xingwang Bian, Bowen Song, Ying Li, Pan Pan, Jinjun Feng   +5 more
doaj   +1 more source

Design of optically pumped cesium beam tube with hexapole magnetic system for longer lifetime and better SNR

Frontiers in Physics, 2022
In order to get a better tradeoff between the long lifetime and high performances of cesium beam atomic clocks, we proposed a design scheme of compact optically pumped cesium beam tube (OPCBT) based on hexapole magnetic focusing (HMF) system for the ...
Haijun Chen, Yufei Yan, Jingbiao Chen, Jinjun Feng   +3 more
doaj   +1 more source

High-Frequency Vacuum Electron Devices [PDF]

Electronics, 2022
Vacuum electron devices at frequencies of millimeter waves and terahertz play highly important roles in the modern high-data rate and broadband communication system, high-resolution detection and imaging, medical diagnostics, magnetically confined nuclear fusion, etc [...]
Jinjun Feng, Yubin Gong, Chaohai Du, Adrian Cross   +3 more
openaire   +3 more sources

Research of the Algebraic Multigrid Method for Electron Optical Simulator

Entropy, 2022
At present, electron optical simulator (EOS) takes a long time to solve linear FEM systems. The algebraic multigrid preconditioned conjugate gradient (AMGPCG) method can improve the efficiency of solving systems.
Zhi Wang, Quan Hu, Xiao-Fang Zhu, Bin Li, Yu-Lu Hu, Tao Huang, Zhong-Hai Yang, Liang Li   +7 more
doaj   +1 more source

Design of an ultrashort H‐plane coupler without transition structure for sheet beam traveling‐wave tube amplifier at W‐band

Electronics Letters, 2023
An ultrashort H‐plane sheet beam traveling‐wave tube (SB‐TWT) coupler without transition structure is proposed. The coupler adopts a new idea of directly coupling the microwave from H‐plane of the slow‐wave circuit (SWC) and optimizes the matching by ...
Zheng Guo, Changqing Zhang, Jun Cai, Jinjun Feng   +3 more
doaj   +1 more source

Physical nature of 'anomalous' electrons in high-current vacuum diodes [PDF]

Vojnotehnički Glasnik, 2021
Introduction/purpose: A fundamental theoretical explanation is given for the fact that in subnanosecond vacuum diodes there exists a group of electrons with kinetic energies much higher than the applied voltage (multiplied by the value of the ...
Vasily Y. Kozhevnikov, Andrey V. Kozyrev
doaj   +1 more source

Enhanced Field Emission of Single-Wall Carbon Nanotube Cathode Prepared by Screen Printing with a Silver Paste Buffer Layer

Nanomaterials, 2022
A high emission current with relatively low operating voltage is critical for field emission cathodes in vacuum electronic devices (VEDs). This paper studied the field emission performance of single-wall carbon nanotube (SWCNT) cold cathodes prepared by ...
Ruirui Jiang, Jianlong Liu, Kaiqiang Yang, Jing Zhao, Baoqing Zeng   +4 more
doaj   +1 more source