A 0.9mA 95dB Sigma Delta Modulator for Digital RF Hearing Aid in 0.35µm CMOS. - Long-Xi Chang; Day-Uei Li; Chi-Chen Chung; Tim-Kuei Shia (ISCAS, 2007)

A 3.8-Gb/s CMOS Laser Driver with Automatic Power Control Using Thermistors. - Day-Uei Li; Wen-Hui Chen; Long-Xi Chang; Chueh-Hao Yu (ISCAS, 2007)

A fully integrated solar charger controller with input MPPT regulation protection for 10V to 28V solar-powered panel. - Long-Xi Chang; Chueh-Hao Yu; Yi-Feng Luo; Cihun-Siyong Alex Gong (ISCE, 2013)

A sigma-delta modulator for bio-applications. - Cihun-Siyong Alex Gong; Kai-Wen Yao; Muh-Tian Shiue; Yu-Ying Lin; Yi-Feng Luo; Long-Xi Chang (ISCE, 2013)

AC impedance technique for dynamic and static state of charge analysis for Li-ion battery. - Yi-Feng Luo; Cihun-Siyong Alex Gong; Long-Xi Chang; Yi-Hua Liu (ISCE, 2013)

A Wide-Range Charge Controller for Solar Sensor. - Cihun-Siyong Alex Gong; Long-Xi Chang (J. Circuits Syst. Comput., 2015)