Zobrazeno 1 - 10
of 192
pro vyhledávání: '"Larry R. Barnett"'
Publikováno v:
IEEE Transactions on Electron Devices. 64:2675-2682
Development of high frequency, high-average power linear beam devices is hindered by the slow progress in advancement of suitable mechanical design and manufacturing techniques. To compliment the significant progress in electromagnetic modeling and d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ed96cca947a202a280c847520f6e2fd0
https://doi.org/10.1109/ted.2017.2690642
https://doi.org/10.1109/ted.2017.2690642
Publikováno v:
IEEE Transactions on Electron Devices. 60:2912-2917
There is an increasing interest in sheet electron beam-based vacuum electron devices from the microwave through terahertz region. As with standard pencil beam devices, it is desirable to increase overall net efficiency through the use of multistage d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fa967e169e32ed81be39b793e7f5ec67
https://doi.org/10.1109/ted.2013.2272602
https://doi.org/10.1109/ted.2013.2272602
Autor:
Larry R. Barnett
Publikováno v:
2016 IEEE International Vacuum Electronics Conference (IVEC).
This work investigates large bore electropermagnet designs up to 60 mm ID suitable for 2nd harmonic 94 GHz gyrotrons in the 100 to 200 kWCW class. It is compact, low weight, and low coil operating power for its capabilities. This concept is expected
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::01d4315e4c3f05eb52d30cc528a9421e
https://doi.org/10.1109/ivec.2016.7561847
https://doi.org/10.1109/ivec.2016.7561847
Autor:
Anisullah Baig, Diana Gamzina, Jinfeng Zhao, Youngmin Shin, Robert Barchfeld, Larry R. Barnett, Calvin Domier, Neville C. Luhmann
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::20976c5f9e50e7cf44ade247bbdfb0bb
https://doi.org/10.1007/978-94-017-9780-1_297
https://doi.org/10.1007/978-94-017-9780-1_297
Publikováno v:
IEEE Transactions on Electron Devices. 59:234-240
The primary constituents of a 0.22-terahertz (THz) sheet-beam traveling-wave tube (TWT) amplifier, composed of a staggered double grating array waveguide, have been designed for broadband THz operation (~ 30%) using the fundamental passband (TE-mode)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3082d39951c88a4f145d2d5a3fa6bd64
https://doi.org/10.1109/ted.2011.2173575
https://doi.org/10.1109/ted.2011.2173575
Autor:
Neville C. Luhmann, Young-Min Shin, John Pasour, Anisullah Baig, Paul B. Larsen, Larry R. Barnett
Publikováno v:
IEEE Transactions on Electron Devices. 58:3213-3218
Extensive numerical analysis has demonstrated that a terahertz (H-band) sheet beam traveling-wave tube (TWT) amplifier circuit, composed of a staggered double grating array waveguide, has very broad bandwidth (~30%) of the fundamental passband (TE mo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7fcddeb9310a2c2faba2921dacc35474
https://doi.org/10.1109/ted.2011.2159842
https://doi.org/10.1109/ted.2011.2159842
Autor:
Jinfeng Zhao, Diana Gamzina, Neville C. Luhmann, Na Li, Ji Li, Z A Munir, Larry R. Barnett, M. Banducci
Publikováno v:
IEEE Transactions on Electron Devices. 58:1221-1228
A nano-Sc2O3-added W powder for use in high current density thermionic cathodes has been made using a solution-gel method with the following controllable uniform average particle sizes: ~72, 146, 272, and 587 nm. Using these powders, nanostructured S
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::85edd869955fd6b65390c05051ae2fcb
https://doi.org/10.1109/ted.2011.2109723
https://doi.org/10.1109/ted.2011.2109723
Publikováno v:
IEEE Transactions on Electron Devices. 58:251-258
A W-band sheet beam klystron is being developed as a portable coherent radiation source for active denial system application. The interaction circuit design employs eight stagger-tuned cavities (multigap structure) and a 12:1-aspect-ratio sheet elect
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::38c4ad211a67c1d35761e1e264064082
https://doi.org/10.1109/ted.2010.2082544
https://doi.org/10.1109/ted.2010.2082544
Autor:
Anisullah Baig, Diana Gamzina, Neville C. Luhmann, Larry R. Barnett, Young-Min Shin, Frank Yaghmaie
Publikováno v:
Journal of Microelectromechanical Systems. 19:683-689
By using a novel negative-tone photoresist, KMPR, we have investigated ultraviolet (UV) lithographic microelectroforming fabrication of ultrathick metallic microstructures ( ? 400 ?m). Scanning coating spin speed together with the film thickness and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fb20f02a95387c8eaeab30b5ac6af770
https://doi.org/10.1109/jmems.2010.2045880
https://doi.org/10.1109/jmems.2010.2045880
Publikováno v:
IEEE Transactions on Electron Devices. 56:3196-3202
In this paper, a quasi-optical (QO) output coupler, consisting of a tapered waveguide coupling to WR-10 waveguide, was designed to serve as the multigap output cavity of a 50-kW peak-power W-band sheet-beam klystron. In this structure, TE10 mode radi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e95651adf3697a131fd4df9c83fc085f
https://doi.org/10.1109/ted.2009.2032752
https://doi.org/10.1109/ted.2009.2032752