[1] Kwangwoon Univ, RFIC Res & Educ Ctr, Nowon Ku, Seoul 139701, South Korea
[2] Kwangwoon Univ, Miss Technol Res Ctr, Nowon Ku, Seoul 139701, South Korea
[3] LG Elect Inst Technol, Microsyst & RF Team, Mat & Devices Lab, Seocho Ku, Seoul 137140, South Korea