Results 211 to 220 of about 63,375 (259)
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2021
The exploitation of the spectrum beyond 100 GHz is the solution for the full implementation of 5G and the development of 6G concepts. Low-power electronics is already available, but technology advancements are needed to overcome the increasing atmosphere and rain attenuation above 100 GHz, which presently limit the transmission distance.
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The exploitation of the spectrum beyond 100 GHz is the solution for the full implementation of 5G and the development of 6G concepts. Low-power electronics is already available, but technology advancements are needed to overcome the increasing atmosphere and rain attenuation above 100 GHz, which presently limit the transmission distance.
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Vacuum Electron Devices in the 88-Inch Cyclotron
2022The 88-Inch Cyclotron at Lawrence Berkeley National Laboratory is a sector-focused cyclotron that has light- and heavy-ion capabilities and supports a local research program in Nuclear Science and is the home of the Berkeley Accelerator Space Effects Facility, which studies effects of radiation on microelectronics, optics, materials, and cells.
Kireeff Covo, Michel +7 more
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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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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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The Application of Electron Beam Welding on Vacuum Electron Devices
2019 International Vacuum Electronics Conference (IVEC), 2019Electron beam welding is widely used in the field of Vacuum Electron Devices (VED). Oxygen free copper (OFC) was welded by electron beam welding with appropriate process parameters for the application of VED. The effects of welding speed and current parameter on welding depth have been studied in the experiment. Microstructure properties of OFC welding
Bofeng Wang +6 more
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Special Issue on Vacuum Electron Devices
IEEE Transactions on Electron Devices, 2009The 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, 2018A 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 +8 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), 2005We 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 +7 more
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Sealed vacuum electronic devices by surface micromachining
International Electron Devices Meeting 1991 [Technical Digest], 2002Solid-state planar micromachining techniques have been applied in the fabrication of two types of vacuum microelectronic devices. Cold-cathode devices based on field emission and hot-cathode devices based on thermal-field emission have been fabricated for possible use in high-speed, high-operating-temperature device applications.
S. Zurn +4 more
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Microfabrication of High-Frequency Vacuum Electron Devices
IEEE Transactions on Plasma Science, 2004Advances in manufacturing technology for microstructures are allowing new opportunities for vacuum electron devices producing radio-frequency (RF) radiation. Specifically, the capability to produce small circuit structures is allowing development of RF devices at frequencies impractical with traditional machining technology.
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3D Design Tools for Vacuum Electron Devices
AIP Conference Proceedings, 2003A reduction of development costs will have a significant impact on the total cost of the vacuum electron devices. Experimental testing cycles can be reduced or eliminated through the use of simulation‐based design methodology, thereby reducing the time and cost of development.
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