Mode conversion of high-power electromagnetic microwave using coaxial-beam rotating antenna in relativistic backward-wave oscillator

Sun Hong Min, Hoe Chun Jung, Gun Sik Park, Jihwan Ahn, Sang Heun Lee, Young Joong Yoon, Junyeon Kim, Jun Ho Choi, Joonho So

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Mode conversion of high-power electromagnetic microwave (HPEM) was successfully accomplished using a coaxialbeam rotating antenna (COBRA) in an X-band relativistic backward-wave oscillator (RBWO). The mode conversion from the TM 01 mode to the circularly polarized TE 11 -likeness mode was identified by both cold test and hot test. To observe whether mode conversion is effective or not, the radiation pattern of TE 11 - likeness mode by COBRA lens was compared with the case of the radiation pattern of TM 01 mode using simple horn antenna. Their radiation patterns could be described by fluorescent lamps. The experimental results of radiation pattern measurements are shown to be in a reasonable agreement with the simulated one. The maximum value of RF output power appeared at the center of COBRA lens from the experimental results.

Original languageEnglish
Article number5446350
Pages (from-to)1391-1397
Number of pages7
JournalIEEE Transactions on Plasma Science
Volume38
Issue number6 PART 1
DOIs
Publication statusPublished - 2010 Jun 1

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backward waves
antennas
oscillators
electromagnetism
microwaves
lens antennas
radiation
horn antennas
superhigh frequencies
luminaires
output

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Condensed Matter Physics

Cite this

Min, Sun Hong ; Jung, Hoe Chun ; Park, Gun Sik ; Ahn, Jihwan ; Lee, Sang Heun ; Yoon, Young Joong ; Kim, Junyeon ; Choi, Jun Ho ; So, Joonho. / Mode conversion of high-power electromagnetic microwave using coaxial-beam rotating antenna in relativistic backward-wave oscillator. In: IEEE Transactions on Plasma Science. 2010 ; Vol. 38, No. 6 PART 1. pp. 1391-1397.
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Mode conversion of high-power electromagnetic microwave using coaxial-beam rotating antenna in relativistic backward-wave oscillator. / Min, Sun Hong; Jung, Hoe Chun; Park, Gun Sik; Ahn, Jihwan; Lee, Sang Heun; Yoon, Young Joong; Kim, Junyeon; Choi, Jun Ho; So, Joonho.

In: IEEE Transactions on Plasma Science, Vol. 38, No. 6 PART 1, 5446350, 01.06.2010, p. 1391-1397.

Research output: Contribution to journalArticle

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AU - Jung, Hoe Chun

AU - Park, Gun Sik

AU - Ahn, Jihwan

AU - Lee, Sang Heun

AU - Yoon, Young Joong

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AU - Choi, Jun Ho

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