Results 231 to 240 of about 269,980 (281)

Traditional and novel vacuum electron devices

IEEE Transactions on Electron Devices, 2001
This paper describes some vacuum devices - including conventional and unique multibeam O-type amplifiers and oscillators in the microwave, millimeter wave, and submillimeter wavelength regions of the spectrum, and miniature injection locked M-type amplifiers. Main parameters and operational characteristics are presented.
A.N. Korolev, S.A. Zaitsev, I.I. Golenitskij, Y.V. Zhary, A.D. Zakurdayev, M.I. Lopin, P.M. Meleshkevich, E.A. Gelvich, A.A. Negirev, A.S. Pobedonostsev, V.I. Poognin, V.B. Homich, A.N. Kargin   +12 more
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Special Issue on Vacuum Electron Devices

IEEE Transactions on Electron Devices, 2009
The 39 papers in this special issue focus on vacuum electron devices. The papers are grouped by device type: high frequency/microfabrication; sheet beams; cathodes; gyro-devices; klystrons/multi-beam klystrons; and traveling-wave tube.
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Carbon Nanotube Film Gate in Vacuum Electronic Devices

Nano Letters, 2018
A superaligned carbon nanotube (SACNT) film can act as an ideal gate electrode in vacuum electronics due to its low secondary electron emission, high electron transparency, ultrasmall thickness, highly uniform electric field, high melting point, and high mechanical strength.
Peng Liu, Duanliang Zhou, Chunhai Zhang, Xinhe Yang, Liang Liu, Lina Zhang, Kaili Jiang, Qunqing Li, Shoushan Fan   +8 more
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Vacuum electron devices

1994
From its invention in 1906 until about 1950 the vacuum tube has been the key element of electronics. Then it started to be replaced by semiconductor devices. From our everyday experience with consumer electronics we are inclined to conclude that the days of the vacuum tube are over. Nothing is less true, however.
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CTLSS features supporting vacuum electron device design

IEEE Conference Record - Abstracts. 2002 IEEE International Conference on Plasma Science (Cat. No.02CH37340), 2003
Summary form only given, as follows. The Cold-Test, Large-Signal Simulation Code (CTLSS) is being developed to provide a 3D electromagnetic simulation tool that is designed to interoperate with large-signal codes employed in microwave and millimeter-wave vacuum electron device design.
S.J. Cooke, C.L. Chang, A.A. Mondelli, D.P. Chernin, T.M. Antonsen, B. Levush   +5 more
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Combined device for vacuum electron diode adjustment

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2018
Abstract The article describes a principle, design and test results of a device for simultaneous capture of electron beam current ejected through an anode and optical image of a cathode surface. The device was tested on “ASTRA-M” pulsed electron accelerator (TPU, Russia) with the following parameters: 300 kV, 0.6 kA and beam current duration ...
I. Egorov, A. Poloskov
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Metamaterial-based Vacuum Electronic Devices with Miniaturization

2020 URSI Regional Conference on Radio Science ( URSI-RCRS), 2020
Metamaterial is a sort of new artificial constructed sub-wavelength structure. Unlike conventional composite materials, its electromagnetic characteristics are manipulated by its shape, size, arrangement, and materials. In this paper, based on reversed Cherenkov radiation and enhanced transition radiation, metamaterial-inspired vacuum electronic ...
Zhaoyun Duan, Xin Wang, Hengyu Luo, Xuanming Zhang, Zhanliang Wang, Huarong Gong, Yubin Gong   +6 more
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Micro-fabricated millimeter wave vacuum electronic devices

35th International Conference on Infrared, Millimeter, and Terahertz Waves, 2010
0.1 THz Coupled Cavity Backward-wave Oscillator (CCBWO) is being developed utilizing two-step X-ray lithography. The characteristics of this 0.1 THz CCBWO are investigated through cold and hot tests.
Ohjoon Kwon, Jin-Kyu So, Anurag Srivastava, Matlabjon Sattorov, Ranjan Kumar Barik, Anirban Bera, Anil Kumar Tanwar, Seung-Hyuk Park, In-Keun Baik, Jun-Ho Choi, Junyeon Kim, Jong-Won Yang, Jong-Hyun Kim, Suk-Sang Chang, Gun-Sik Park   +14 more
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Experimental investigations on miniaturized vacuum electron devices

IVESC 2004. The 5th International Vacuum Electron Sources Conference Proceedings (IEEE Cat. No.04EX839), 2005
We investigated foundations for high frequency vacuum electron devices, experimentally with emphasis on LIGA (deep etch X-ray lithography: lithographie, galvanoformung, abformung; German acronyms) to fabricate a miniaturized interaction circuit and a photonic crystal (PC) resonator to excite a stable high order mode.
null Seong-Tae Han, null Seok-Gy Jeon, null Young-Min Shin, null Kyu-Ha Jang, null Jin-Kyu So, null Jong-Hyun Kim, null Suk-Sang Chang, null Gun-Sik Park   +7 more
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PIC software for vacuum electronic device design

Abstracts. International Vacuum Electronics Conference 2000 (Cat. No.00EX392), 2002
This paper describes some recent developments of the Culham Particle-in-Cell (PIC) software for use in the design vacuum electronic devices. Increasingly complex devices, with volume and surface physics models and coupling to external circuits can now be modelled in detail, making virtual prototyping a powerful and cost effective adjoint to ...
J.W. Eastwood, N.J. Brealey, W. Arter, R.A. Bond   +3 more
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