Experimental verification of harmonic multiplication in ka-band two-stage tapered Gyro-TWT

C. W. Baik, S. G. Jeon, D. H. Kim, A. K. Ganguly, G. S. Park, N. Sato, K. Yokoo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A harmonic multiplying gyro-travelingwave tube (gyro-TWT) has bem designed, fabricated. It triplicates X-band input frequencies to amplified Ka-band output frequencies. Using a self-consistent large-signal theory [1], a saturated gain of 23.8 dB, a bandwidth of 4.1 %, and an electronic efficiency of 10 % are predicted when an axis-encircling electron beam of 4 % axial velocity spread is assumed. 30 kV, 1 A cusp electron beam is employed. The interaction circuit is atwestage linearly tapered rectangular waveguide with a server where the RF is completely cut-off In the input stage, the fundamental cyclotron harmonic interaction occurs at X-band frequencies and the third harmonic interaction is occurred in the output stage with dtstributed interaction along the circuit. Two-stage linearly tapered gyro-TWT was first demonstrated at NRL [2], which shows a 20 % bandwidth at Kaband with saturated gain of 25 dB using the fundamental cyclotron harmonic interaction in both stages.

Original languageEnglish
Title of host publication4th IEEE International Vacuum Electronics Conference, IVEC 2003 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages350-351
Number of pages2
ISBN (Electronic)0780376994, 9780780376991
DOIs
Publication statusPublished - 2003 Jan 1
Event4th IEEE International Vacuum Electronics Conference, IVEC 2003 - Seoul, Korea, Republic of
Duration: 2003 May 282003 May 30

Publication series

Name4th IEEE International Vacuum Electronics Conference, IVEC 2003 - Proceedings

Other

Other4th IEEE International Vacuum Electronics Conference, IVEC 2003
CountryKorea, Republic of
CitySeoul
Period03/5/2803/5/30

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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