23.5 An energy pile-up resonance circuit extracting maximum 422% energy from piezoelectric material in a dual-source energy-harvesting interface. - Young-Sub Yuk; Seungchul Jung; Hui-Dong Gwon; Sukhwan Choi; Si-Duk Sung; Tae-Hwang Kong; Sung-Wan Hong; Jun-Han Choi; Min-Yong Jeong; Jong-Pil Im; Seung-Tak Ryu; Gyu-Hyeong Cho (ISSCC, 2014)

Auto-Scaling Overdrive Method Using Adaptive Charge Amplification for PRAM Write Performance Enhancement. - Sukhwan Choi; Hyunsik Kim; Seungchul Jung; Si-Duk Sung; Young-sub Yuk; Hyuck-Sang Yim; Yoonjae Shin; Junho Cheon; Changyong Ahn; Taekseung Kim; Yongki Brave Kim; Gyu-Hyeong Cho (IEEE Trans. Circuits Syst. I Regul. Pap., 2014)

86.55% Peak efficiency envelope modulator for 1.5W 10MHz LTE PA without AC coupling capacitor. - Si-Duk Sung; Sung-Wan Hong; Jun-Suk Bang; Ji-Seon Paek; Seung-Chul Lee; Thomas Byunghak Cho; Gyu-Hyeong Cho (VLSIC, 2015)