Ha, D.H. Chai, J.-S. Ghergherehchi, M. Kim, H.S. Lee, J.C. Mun, S.C. Namgoong, H. Shin, S. JACoW Geneva, Switzerland 978-3-95450-167-0 10.18429/JACoW-Cyclotrons2016-THP14 English 336-338 THP14 pick-up cavity cyclotron resonance simulation Contribution to a conference proceedings 2017 2017-01 http://dx.doi.org/10.18429/JACoW-Cyclotrons2016-THP14 http://jacow.org/cyclotrons2016/papers/thp14.pdf The radio-frequency (RF) pick-up for RFT-30 cyclotron which was located in the Korea Atomic Energy Research Institute (KAERI) was designed by Sungkyunkwan University in Korea. This paper covers proper position of RF pick-up and things to consider when designing. Our RF pick-up antenna is designed for RFT-30, but approach to design process can be used any RF pick-up antenna design. This paper provide some tendency graph according to position of RF pick-up.