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http://dx.doi.org/10.5757/JKVS.2010.19.1.072

8-port Coupled Transmission Line Modeling of KSATR ICRF Antenna and Comparison with Measurement  

Kim, S.H. (Nuclear Fusion Research Laboratory, Korea Atomic Energy Research Institute)
Wang, S.J. (Nuclear Fusion Research Laboratory, Korea Atomic Energy Research Institute)
Hwang, C.K. (Nuclear Fusion Research Laboratory, Korea Atomic Energy Research Institute)
Kwak, J.G. (Nuclear Fusion Research Laboratory, Korea Atomic Energy Research Institute)
Publication Information
Journal of the Korean Vacuum Society / v.19, no.1, 2010 , pp. 72-80 More about this Journal
Abstract
It is very important to predict and analyze the change of voltage and current distribution of current strap, abnormal voltage distribution of transmission line and resonance phenomenon by coupling between current straps for more stable operation of ICRF system. In this study, to understand those phenomena by coupling, 8-port coupled transmission line model is completed by appling S-parameter measured in the prototype KSTAR ICRF antenna to the model. The determined self-inductance, mutual-inductance and capacitance of antenna straps are shown to be lower than that calculated from 2D approximate model due to finite length of strap. The coupled transmission line model of current strap will be utilized to the operation of ICRF system of KSTAR in the future.
Keywords
ICRF antenna; Coupling; Transmission line modeling; KSTAR;
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