Design Methodology for a Wideband, Low Insertion Loss, Digital Step Attenuator in SiGe BiCMOS Technology. - Cheon, Clifford D. Y.; Rao, Sunil G.; Lim, Wonsub; Cardoso, Adilson S.; Cho, Moon-Kyu; Cressler, John D. (IEEE Trans. Circuits Syst. II Express Briefs, 2022)

An Antenna Proximity Sensor for Mobile Terminals Using Reflection Coefficient. - Lim, Wonsub; Yang, Dongil; Yang, Youngoo (Sensors, 2018)