Ultra-wideband coaxial hybrid coupler for load resilient ion cyclotron range of frequency heating at fusion plasmas

We designed a high power and ultra-wideband two-section 3 dB coaxial hybrid coupler for load resilient ion cyclotron range of frequency heating by configuring asymmetric impedance matching using a three-dimensional simulation code, hfss. By adjusting the characteristic impedances of main and coupled...

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Bibliographic Details
Published in:Applied physics letters 2012-06, Vol.100 (26)
Main Authors: Kim, H. J., Bae, Y. S., Yang, H. L., Kwak, J.-G., Wang, S. J., Kim, B. K., Choi, J. J.
Format: Article
Language:English
Subjects:
ASYMMETRY
CYCLOTRONS
HEATING
HYPERFINE STRUCTURE
IMPEDANCE
INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
IONS
PLASMA
POWER TRANSMISSION LINES
SIMULATION
WAVEGUIDES
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Summary:We designed a high power and ultra-wideband two-section 3 dB coaxial hybrid coupler for load resilient ion cyclotron range of frequency heating by configuring asymmetric impedance matching using a three-dimensional simulation code, hfss. By adjusting the characteristic impedances of main and coupled lines of the hybrid coupler, we realized that the bandwidth of the proposed circuit is not only wider than that of a conventional three-section coupler, but also that the bandwidth is almost twice as wide compared to the conventional two-section hybrid coupler while maintaining the identical overall size.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4731241