Sung-Jun Kim, Soo-Jung Ryu, Tae-Ho Kim, Jong Hyeon Kim, Wan-Soo Nah, Mar 2014, High-Frequency
                           Parameter  Extraction  of  Insulating  Transformer  Using S-Parameter  Measurement,
                           The Journal of Korean Institue of Electromagnetic Engineering and Science, Vol. 25,
                           No. 3, pp. 259-268
