Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Jack C. Tucek"'
Publikováno v:
2020 IEEE 21st International Conference on Vacuum Electronics (IVEC).
Scandate cathodes have the potential to replace conventional cathodes because of their improved emission characteristics. Nevertheless, it remains a challenge in this field to produce scandate cathodes with uniform surface emission in a reproducible
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::396f3050a9a8e9701f758c5f14d039bc
https://doi.org/10.1109/ivec45766.2020.9520534
https://doi.org/10.1109/ivec45766.2020.9520534
Publikováno v:
2019 International Vacuum Electronics Conference (IVEC).
Scandate cathodes have long attracted attention due to their higher emission current density, apparent low work function, and anticipated improved longevity compared to conventional cathodes. However, scandate cathodes have not been applied as extens
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b12bf64844d1e9ac0053e2994e00b535
https://doi.org/10.1109/ivec.2019.8745171
https://doi.org/10.1109/ivec.2019.8745171
Autor:
Kevin Kanemori, Louis Christen, Kevin M. K. H. Leong, Tyler Foster, Xiao Bing Mei, Mark A. Basten, K. Kreischer, William R. Deal, Matthew Dion, Gregor Altvater, Jack C. Tucek, Alexis Zamora, Mark B. Wong
Publikováno v:
2017 IEEE MTT-S International Microwave Symposium (IMS).
This paper reports demonstration of a 0.666 THz (666 GHz) datalink. A peak error-free data rate of 9.5 Gbps is demonstrated over a 590 m range using QPSK modulation with a measured humidity of 18% with more than 40 dB SNR at the output of the receive
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::73c5f3967a4e00b9b49c6d8bb2fd0db2
https://doi.org/10.1109/mwsym.2017.8059083
https://doi.org/10.1109/mwsym.2017.8059083
Publikováno v:
2016 IEEE International Vacuum Electronics Conference (IVEC).
Northrop Grumman has extended its development of compact, microfabricated vacuum electronic amplifiers to 1.0 THz. Most recently, our 1.030 THz amplifier produced 29 mW at 1.03 THz with 20 dB of gain at saturation and 5 GHz of instantaneous bandwidth
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a1395b3193c44749b4c7b3fc38a804a4
https://doi.org/10.1109/ivec.2016.7561772
https://doi.org/10.1109/ivec.2016.7561772
This report summarizes the technical progress made at NGES during the HiFIVE program developing a 50 W, 220 GHz amplifier based on vacuum electronics technology. Two configurations were investigated: A multi-beam amplifier in a planar magnet and a si
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1e75fac845b9cda4737c35bbfbb36c8a
https://doi.org/10.21236/ada610341
https://doi.org/10.21236/ada610341
Publikováno v:
IEEE International Vacuum Electronics Conference.
Northrop Grumman Electronic Systems has developed the first, compact, microfabricated vacuum electronic amplifier operating at 0.835-0.875 THz. The amplifier produced >50 mW of output power at the window at frequencies between 0.835-0.842 THz and 39.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2a361631e027ac1050475b80d936c6da
https://doi.org/10.1109/ivec.2014.6857535
https://doi.org/10.1109/ivec.2014.6857535
Publikováno v:
2013 IEEE 14th International Vacuum Electronics Conference (IVEC).
A 220 GHz power amplifier has been demonstrated as part of the DARPA HiFIVE program. This amplifier is based on a folded waveguide circuit, and operates at 19 kV and 250 mA. Short pulse tests resulted in 56 W at 214 GHz and a 5.0 GHz bandwidth.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b1ba0bf981529534f347c17d9fa0a64a
https://doi.org/10.1109/ivec.2013.6570961
https://doi.org/10.1109/ivec.2013.6570961
Publikováno v:
2013 IEEE 14th International Vacuum Electronics Conference (IVEC).
Northrop Grumman Electronic Systems is developing vacuum-based power amplifiers operating at G-band with over 50W of output power and 3.5 GHz bandwidth. New power module configurations using a single electron beam, compact solenoidal magnet, and inte
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9f06f1082b18bacc50b0f15bf1bdc56a
https://doi.org/10.1109/ivec.2013.6570932
https://doi.org/10.1109/ivec.2013.6570932
Autor:
Vesna Radisic, Kevin M. K. H. Leong, D.A. Gallagher, R. Mihailovich, Richard Lai, Jack C. Tucek, Mark A. Basten, K. Kreischer
Publikováno v:
IVEC 2012.
A 0.670 THz Power Module based on a vacuum electronic (VE) power amplifier and a solid-state power amplifier (SSPA) has produced >100 mW, operating from 0.640–0.685 THz in a bread-board demonstration. The driver amplifier is a power-combined, MMIC
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e5fff47d4675fe5acc375a075a00df5d
https://doi.org/10.1109/ivec.2012.6262062
https://doi.org/10.1109/ivec.2012.6262062
Publikováno v:
2010 IEEE International Vacuum Electronics Conference (IVEC).
Vacuum electronic (VE) power amplifiers are being developed between 100 GHz and 1 THz. Minimum power goals are 50 watts at 220 GHz, and 100 mW at 670 GHz. These devices will use advanced, high current density cathodes, a folded waveguide as the slow-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::95187cdf1c3ff217abff31fc781333f0
https://doi.org/10.1109/ivelec.2010.5503623
https://doi.org/10.1109/ivelec.2010.5503623