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Terahertz-Regime, Micro-VEDs: Evaluation of Micromachined TWT Conceptual DesignsSummary form only given. The Terahertz (THz) region of the electromagnetic spectrum (approx.300-3000 GHz) has enormous potential for high-data-rate communications, spectroscopy, astronomy, space research, medicine, biology, surveillance, remote sensing, industrial process control, etc. The most critical roadblock to full exploitation of the THz band is lack of coherent radiation sources that are powerful (0.01-10.0 W continuous wave), efficient (>1 %), frequency agile (instantaneously tunable over 1% bandwidths or more), reliable, and relatively inexpensive. Micro-machined Vacuum Electron Devices (micro-VEDs) represent a promising solution. We describe prospects for miniature, THz-regime TWTs fabricated using micromachining techniques. Several approx.600 GHz conceptual designs are compared. Their expected performance has been analyzed using SD, 2.51), and 3D TWT codes. A folded waveguide (FWG) TWT forward-wave amplifier design is presented based on a Northrop Grumman (NGC) optimized design procedure. This conceptual device is compared to the simulated performance of a novel, micro-VED helix TWT. Conceptual FWG TWT backward-wave amplifiers and oscillators are also discussed. A scaled (100 GHz) FWG TWT operating at a relatively low voltage (-12 kV) is under development at NGC. Also, actual-size micromachining experiments are planned to evaluate the feasibility of arrays of micro-VED TWTs. Progress and results of these efforts are described. This work was supported, in part by AFOSR, ONR, and NSF.
Document ID
20120009176
Acquisition Source
Glenn Research Center
Document Type
Conference Paper
Authors
Booske, John H.
(Wisconsin Univ. Madison, WI, United States)
Kory, Carol L.
(Analex Corp. Cleveland, OH, United States)
Gallagher, D.
(Northrop Grumman Corp. United States)
van der Weide, Daniel W.
(Wisconsin Univ. Madison, WI, United States)
Limbach, S
(Wisconsin Univ. Madison, WI, United States)
Gustafson, P
Lee, W.-J.
Gallagher, S.
Jain, K.
(Wisconsin Univ. Madison, WI, United States)
Date Acquired
August 25, 2013
Publication Date
June 17, 2001
Publication Information
Publication: Pulsed Power Plasma Science. IEEE Conference Record - Abstracts
Volume: 2001
Subject Category
Electronics And Electrical Engineering
Meeting Information
Meeting: IEEE International Conference on Plasma Science (ICOPS)
Location: Las Vegas, NV
Country: United States
Start Date: June 17, 2001
End Date: June 22, 2001
Sponsors: Institute of Electrical and Electronics Engineers
Funding Number(s)
CONTRACT_GRANT: NAS3-27600
Distribution Limits
Public
Copyright
Other

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