NDLI: Design of wide-band gyro-twystrons for high power millimeter wave radar applications

Content Provider	IEEE Xplore Digital Library
Author	Blank, M. Latham, P.E. Levush, B. Danly, B.G.
Copyright Year	1996
Description	Author affiliation: Naval Res. Lab., Washington, DC, USA (Blank, M.)
Abstract	Summary form only given. The Naval Research Laboratory is currently investigating gyro-twystrons as high-power, wideband sources for millimeter wave radars. For many radar applications, the gyro-twystron configuration represents a suitable compromise between the high power, narrow band gyro-klystron and the lower power, broadband gyro-TWT. A non-linear simulation code was used to design two gyro-twystrons, the first in Ka-band and the second in W-band. For the Ka-band device, the interaction between the TE/sub 01/ mode and a 65 kV, 7 A electron beam with /spl alpha/=1.3 was studied. The rms perpendicular electron velocity spread was assumed to be 4.5%. The simulation results indicate that an output power of 123 kW, corresponding to an efficiency of 27%, can be achieved. The 3 dB instantaneous bandwidth, which extends from 34.6 GHz to 36.2 GHz, is 4.5%. Next, the non-linear code was used to design a W-Band gyro-twystron. The interaction mode was, once again, the TE/sub 01/. A 65 kV, 4 A beam with /spl alpha/=1.3 and an RMS perpendicular velocity spread of 4.5% was used. The simulations show that 34 kW output power, corresponding to 13% efficiency, can be realized with a 3 dB instantaneous bandwidth of 4.3% (91 GHz to 95 GHz). The theoretical bandwidths were obtained assuming a frequency independent bunching parameter.
File Size	99609
File Format	PDF
ISBN	0780333225
ISSN	07309244
DOI	10.1109/PLASMA.1996.551520
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1996-06-03
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wideband Millimeter wave radar Bandwidth Tellurium Power generation Laboratories Radar applications Narrowband Electron beams Frequency
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Condensed Matter Physics Electrical and Electronic Engineering

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