Multi-band PLL for RF wireless charger at 2.4 GHz and 5.8 GHz. - JoonHong Park; David Kim; Ree Jin Joe; JongWan Jo; YoungGun Pu; Kang-Yoon Lee (ISOCC, 2020)

Increasing Slew rate of Charge pump by adopting Negative Feedback. - Ree Jin Joe; Dong Gyu Kim; Kang-Yoon Lee (ICEIC, 2021)

Self-Calibrated Digital Two-Point Modulator for BLE RF Transmitter. - Dong Gyu Kim; Ree Jin Joe; Joon-Mo Yoo; Yeon Jae Jung; Hyung Ki Huh; Seok Kee Kim; Kang-Yoon Lee (IEEE Trans. Circuits Syst. II Express Briefs, 2022)