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

Journal Article · Mon Jun 25 00:00:00 EDT 2012 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4731241· OSTI ID:22080415

Kim, H J; Bae, Y S; Yang, H L; Kwak, J -G ^[1]; Wang, S J ^[2]; Kim, B K; Choi, J J ^[3]

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1. National Fusion Research Institute, Daejeon 305-333 (Korea, Republic of)
2. Korea Atomic Energy Research Institute, Daejeon 305-333 (Korea, Republic of)
3. Department of Electronics Convergence Engineering, Kwangwoon University, Seoul 139-701 (Korea, Republic of)

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.

• OSTI ID: 22080415
• Journal Information: Applied Physics Letters, Vol. 100, Issue 26; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ASYMMETRY
CYCLOTRONS
HEATING
HYPERFINE STRUCTURE
IMPEDANCE
IONS
PLASMA
POWER TRANSMISSION LINES
SIMULATION
WAVEGUIDES