A Triple-Mode Balanced Linear CMOS Power Amplifier Using a Switched-Quadrature Coupler. - Hamhee Jeon; Yunseo Park; Yan-Yu Huang; Jihwan Kim; Kun-Seok Lee; Chang-Ho Lee; J. Stevenson Kenney (IEEE J. Solid State Circuits, 2012)

A Fully-Integrated High-Power Linear CMOS Power Amplifier With a Parallel-Series Combining Transformer. - Jihwan Kim; Woonyun Kim; Hamhee Jeon; Yan-Yu Huang; Youngchang Yoon; Hyungwook Kim; Chang-Ho Lee; Kevin T. Kornegay (IEEE J. Solid State Circuits, 2012)

A compact quadrature coupler on GaAs IPD process for LTE applications. - Hamhee Jeon; Nam-Young Kim (IEICE Electron. Express, 2013)