DocumentCode
1056117
Title
A TE11 Ka-band gyro-TWT amplifier with high-average power compatible distributed loss
Author
Pershing, Dean E. ; Nguyen, Khanh T. ; Calame, Jeffrey P. ; Danly, Bruce G. ; Levush, Baruch ; Wood, Franklin N. ; Garven, M.
Author_Institution
Vacuum Electron. Branch, U.S. Naval Res. Lab., Washington, DC, USA
Volume
32
Issue
3
fYear
2004
fDate
6/1/2004 12:00:00 AM
Firstpage
947
Lastpage
956
Abstract
Current amplifier research at the Naval Research Laboratory Vacuum Electronics Branch emphasizes techniques to extend the bandwidth and average power capability of gyro devices for millimeter wave radar applications. This paper will discuss the implementation of a wideband high-gain gyro-traveling wave tube amplifier design, with a measured peak output power of 78 kW, gain ∼60 dB, and a 3-dB bandwidth of 4.2 GHz (12%) at 52 kW in Ka-band. The 3-dB saturated bandwidth at 70 kW is 6 GHz (17%), which is also the instantaneous bandwidth with appropriately tailored input power (e.g., gain equalizer). The amplifier operates in the TE11 mode and for stabilization employs a high-average power compatible diffractive loading technique.
Keywords
gyrotrons; millimetre wave power amplifiers; travelling wave amplifiers; travelling wave tubes; 3 dB; 4.2 GHz; 52 kW; 6 GHz; 70 kW; 78 kW; Ka-band gyro-TWT amplifier; TE11 mode; gyrodevices; high-average power compatible distributed loss; instantaneous bandwidth; millimeter wave amplifier; millimeter wave radar applications; wideband high-gain gyro-traveling wave amplifier design; Bandwidth; Broadband amplifiers; High power amplifiers; Laboratories; Millimeter wave measurements; Millimeter wave radar; Millimeter wave technology; Power amplifiers; Tellurium; Vacuum technology; Dielectric; gyro-TWT; gyro-traveling wave tube; loss; millimeter-wave amplifier;
fLanguage
English
Journal_Title
Plasma Science, IEEE Transactions on
Publisher
ieee
ISSN
0093-3813
Type
jour
DOI
10.1109/TPS.2004.828823
Filename
1321255
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