Zobrazeno 1 - 10
of 195
pro vyhledávání: '"Jeffrey P. Calame"'
Autor:
Eric N. Jin, Brian P. Downey, Vikrant J. Gokhale, Jason A. Roussos, Matthew T. Hardy, Tyler A. Growden, Neeraj Nepal, D. Scott Katzer, Jeffrey P. Calame, David J. Meyer
Publikováno v:
APL Materials, Vol 9, Iss 11, Pp 111101-111101-9 (2021)
Epitaxial integration of perovskite oxide materials with GaN has unlocked the potential to improve functionality and performance in high-power RF and power-switching applications. In this work, we demonstrate structural and electrical properties of h
Externí odkaz:
https://doaj.org/article/2a93bf3d544c4a9b848e4371edc70cf9
Publikováno v:
IEEE Access, Vol 7, Pp 72561-72566 (2019)
We present the fabrication and electromagnetic testing of serpentine waveguide traveling-wave tube amplifier circuits operating in the W-band (75-110 GHz) and D-band (110-170 GHz) frequency ranges. The circuit structures were fabricated in a split-bl
Externí odkaz:
https://doaj.org/article/04c1820b47ce40338fe4a898a41a8f7a
Autor:
Frank Wood, Khanh T. Nguyen, Reginald L. Jaynes, Baruch Levush, Takuji Kimura, Igor A. Chernyavskiy, Dean E. Pershing, Colin D. Joye, Benjamin S. Albright, David K. Abe, Jeffrey P. Calame, Edward L. Wright, John Atkinson, John C. Rodgers, Alan M. Cook
Publikováno v:
IEEE Transactions on Electron Devices. 68:2492-2498
We present the experimental demonstration of a traveling-wave tube (TWT) power amplifier operating in the ${W}$ -band (75–110 GHz) frequency range. The device is based on a serpentine waveguide (SWG) amplification circuit, a slow wave circuit type
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::be61bf744cae635fde7de46577be928b
https://doi.org/10.1109/ted.2021.3068926
https://doi.org/10.1109/ted.2021.3068926
Publikováno v:
IEEE Transactions on Electron Devices. 66:2151-2157
As is well known, a roadblock to realizing the full potential of GaN high-electron mobility transistors (HEMTs) for power amplifier applications is the peaked nature of the transconductance and the resulting power-gain roll-off exhibited by these dev
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::27ea67e32a720eb5ffa0f6228a253d86
https://doi.org/10.1109/ted.2019.2904005
https://doi.org/10.1109/ted.2019.2904005
Publikováno v:
IEEE Access, Vol 7, Pp 72561-72566 (2019)
We present the fabrication and electromagnetic testing of serpentine waveguide traveling-wave tube amplifier circuits operating in the W-band (75-110 GHz) and D-band (110-170 GHz) frequency ranges. The circuit structures were fabricated in a split-bl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6f3bc13351c0e25d2c1681c7505ccac4
https://ieeexplore.ieee.org/document/8730305/
https://ieeexplore.ieee.org/document/8730305/
Autor:
Colin D. Joye, Alan M. Cook, Reginald L. Jaynes, Franklin N. Wood, B. Spence Albright, John C. Rodgers, John A. Pasour, Jeffrey P. Calame, Igor A. Chernyavskiy, Simon J. Cooke, Alexander N. Vlasov, Baruch Levush, David R. Schipf, Khanh T. Nguyen, Edward L. Wright, Dean E. Pershing
Publikováno v:
2021 22nd International Vacuum Electronics Conference (IVEC).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::13dac45bd27f71cf730e836e0e84b47f
https://doi.org/10.1109/ivec51707.2021.9722465
https://doi.org/10.1109/ivec51707.2021.9722465
Autor:
Reginald L. Jaynes, Alan M. Cook, Colin D. Joye, John C. Rodgers, Alexander N. Vlasov, Igor A. Chernyavskiy, Jeffrey P. Calame, Edward L. Wright, Khanh T. Nguyen, Takuji Kimura, John Atkinson, Galen Aymar
Publikováno v:
2020 IEEE International Conference on Plasma Science (ICOPS).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0739276155163a81bee722dca41c833c
https://doi.org/10.1109/icops37625.2020.9717736
https://doi.org/10.1109/icops37625.2020.9717736
Autor:
Namdoo Moon, Arlyn J. Antolak, George R. Neil, Eric Colby, Manouchehr Farkhondeh, Quentin Saulter, Anna Erickson, David A. Jaffray, James S. Welsh, Donna Nevels, Tony Ting, Keith Jankowski, Mark Wrobel, Queenie Huang, George E. Laramore, Donny Hornback, Jeffrey P. Calame, Norm Coleman, Richard Vojtech, Suresh D. Pillai, Kramer Akli, Harry E. Martz, Ahmed Badruzzaman, Shima Shayanfar, David J. Funk, Frederik Tovesson, L. K. Len, Eric C. Ford, Jeff Buchsbaum, Daisy Sauceman, Andrea Schmidt, Christie Ashton, Ron Tosh, John R. Cary, Lance Garrison, Eliane Lessner, Michael V. Fazio, Mary-Keara Boss, Mark Curtin, Tiffani R. Conner, Sandra Beidron
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::91f4001bf8115e879bfa85ddca68ff85
https://doi.org/10.2172/1631121
https://doi.org/10.2172/1631121
Autor:
John C. Rodgers, Colin D. Joye, John R. Lowe, Scooter D. Johnson, Alan M. Cook, Jeffrey P. Calame, Reginald L. Jaynes, B. Spence Albright
Publikováno v:
2019 International Vacuum Electronics Conference (IVEC).
We report on fabrication techniques for creating vacuum electron (VE) circuits from 30 GHz to 300 GHz. for devices up to 300 GHz, micro-CNC machining appears suitable.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0bd2d08faa4580eb1be326734802413a
https://doi.org/10.1109/ivec.2019.8745206
https://doi.org/10.1109/ivec.2019.8745206
Autor:
B. Spence Albright, Colin D. Joye, Frank Wood, John R. Lowe, Khanh T. Nguyen, Reginald T Jaynes, Alan M. Cook, Galen Aymar, Jeffrey P. Calame, Edward L. Wright, David K. Abe, Takuji Kimura
Publikováno v:
2019 International Vacuum Electronics Conference (IVEC).
We present fabrication and testing of RF components for a W-band serpentine waveguide TWT. Broadband ceramic RF windows and loads exhibit reflection lower than −20 dB across the TWT operating band, nominally 87–100 GHz. End-to-end cold test of th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b1d2c69f55d294288665c34b6142f4a0
https://doi.org/10.1109/ivec.2019.8745362
https://doi.org/10.1109/ivec.2019.8745362