1. Department of Electric Engineering, Soongsil University, 369, Sangdo-ro, Dongjak-gu, Seoul 06978, Republic of Korea
2. Department of Electronics Engineering, Chungnam National University, 99, Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea
3. Department of Intelligent Semiconductors, Soongsil University, 369, Sangdo-ro, Dongjak-gu, Seoul 06978, Republic of Korea