A 4GHz direct digital frequency synthesizer utilizing a nonlinear sine-weighted DAC in 90nm CMOS. - Hong Chang Yeoh; Kwang-Hyun Baek (APCCAS, 2008)

A 1.3-GHz 350-mW Hybrid Direct Digital Frequency Synthesizer in 90-nm CMOS. - Hong Chang Yeoh; Jae-Hun Jung; Yun-Hwan Jung; Kwang-Hyun Baek (IEEE J. Solid State Circuits, 2010)

21.3 A 2GHz 130mW direct-digital frequency synthesizer with a nonlinear DAC in 55nm CMOS. - Taegeun Yoo; Yun-Hwan Jung; Hong Chang Yeoh; Yong Sin Kim; Sung-Mo Kang; Kwang-Hyun Baek (ISSCC, 2014)

A 2 GHz 130 mW Direct-Digital Frequency Synthesizer With a Nonlinear DAC in 55 nm CMOS. - Taegeun Yoo; Hong Chang Yeoh; Yun-Hwan Jung; Seong Jin Cho; Yong Sin Kim; Sung-Mo Kang; Kwang-Hyun Baek (IEEE J. Solid State Circuits, 2014)