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1.3: 220 GHz 50 W sheet beam travelling wave tube amplifier

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16 Author(s)
Field, M. ; Teledyne Sci., Thousand Oaks, CA, USA ; Borwick, R. ; Mehrotra, V. ; Brar, B.
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In this paper we report on a development program aimed at producing a travelling wave tube amplifier with significant gain and power at 220 GHz in a compact and lightweight package. This paper provides an overview of the program, describing development of nanoparticle scandate cathodes with current densities exceeding 100 A/cm2, MEMS fabrication and test of mm-wave waveguides and slow-wave structures with bandwidths exceeding 50 GHz centered at 220 GHz, and the production of a sheet electron beam with a current density exceeding 230 A/cm2 and an aspect ratio of 26:1. These components may allow us to produce a 220 GHz, 50W high power amplifier with a hot bandwidth of > 20 GHz and a power-bandwidth product > 1000 W-GHz.

Published in:

Vacuum Electronics Conference (IVEC), 2010 IEEE International

Date of Conference:

18-20 May 2010