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Proceedings Paper

Development of high-power second-harmonic gyro-TWT
Author(s): Qinsong Wang; David B. McDermott; Anthony T. Lin; Neville C. Luhmann; Julius Pretterebner
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Paper Abstract

A Ka-band second-harmonic TE21 gyro-TWT amplifier, capable of generating extremely high power, has been designed with a self-consistent nonlinear simulation code. To demonstrate that a harmonic gyro-TWT can generate significantly higher output power with better stability than fundamental gyro-TWT's due to the higher electron beam currents allowed for the weaker harmonic interaction, a Ku-band proof-of-principle experiment is being built at UCLA and described in this paper. An output power of 400 kW, with an efficiency of 20% and a constant-drive bandwidth of 6% have been predicted for this device. A single anode 100 kV, 20 A MIG is being built to generate the (alpha) equals (upsilon) (perpendicular)/(upsilon) (parallel) equals 1 electron beam with (Delta) (upsilon) PLL/(upsilon) (parallel) equals 8%. A wide- bandwidth 0 dB two-mode phase-velocity coupler and a TE21/TE11 mode converter have been designed to couple the rf power into and out of the amplifier.

Paper Details

Date Published: 8 July 1993
PDF: 8 pages
Proc. SPIE 1872, Intense Microwave Pulses, (8 July 1993); doi: 10.1117/12.147466
Show Author Affiliations
Qinsong Wang, Univ. of California/Los Angeles (United States)
David B. McDermott, Univ. of California/Los Angeles (United States)
Anthony T. Lin, Univ. of California/Los Angeles (United States)
Neville C. Luhmann, Univ. of California/Los Angeles (United States)
Julius Pretterebner, Univ. Stuttgart (Germany)

Published in SPIE Proceedings Vol. 1872:
Intense Microwave Pulses
Howard E. Brandt, Editor(s)

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