Design and performance of traveling-wave tubes using field emitter array cathodes

Authors
Makishima, H Miyano, S Imura, H Matsuoka, J Takemura, H Okamoto, A
Citation
H. Makishima et al., Design and performance of traveling-wave tubes using field emitter array cathodes, APPL SURF S, 146(1-4), 1999, pp. 230-233
Citations number
3
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
APPLIED SURFACE SCIENCE
ISSN journal
01694332 → ACNP
Volume
146
Issue
1-4
Year of publication
1999
Pages
230 - 233
Database
ISI
SICI code
0169-4332(199905)146:1-4<230:DAPOTT>2.0.ZU;2-9
Abstract
An X-band miniaturized traveling-wave tube (TWT) using a Spindt field emitt er array (FEA) cathode was built. The FEA cathode has 542,000 molybdenum ti ps in an emission area 1.2 nun in diameter. It also has a trench current-li miter that shows low resistance in normal operation.A saturation output pow er of 28.2 W1 a saturation power gain of 40 dB, and a beam transmission rat io of more than 99.3% have been achieved at a frequency of 11.5 GHz under 3 % duty ratio. (C) 1999 Elsevier Science B.V. All rights reserved.