Scheduled Uplink Packet Transmission Schemes for Voice Traffic in OFDMA-Based Wireless Communication Systems. - Seokjoo Shin; Kanghee Kim; Sangwook Na (ICOIN, 2007)

A 860.8-nW Low-Power Continuous-Time Delta-Sigma Modulator With Switched Resistors for Sensor Applications. - Jaedo Kim; Hwaseong Shin; Sangwook Na; Quanzhen Duan; Jeongjin Roh (ISCAS, 2023)

103.1-dB DR Switched-Resistor Delta-Sigma Modulator With Chopped Negative-R for Suppressing Low-Bandwidth Noise. - Hwaseong Shin; Quanzhen Duan; Jaedo Kim; Sangwook Na; Jeongjin Roh (IEEE Access, 2023)

A Robust DT ∆Σ Modulator for High-Resolution Sensor Against Temperature Variations. - Jihun Choi; Sangwook Na; Taehun Kim; Jeongjin Roh (ISOCC, 2024)

High-Precision Built-In Phase Noise Measurement Circuit With a Hybrid ΔΣ Time-to-Digital Converter for SoC Clocking Applications. - Jihun Choi; Sangwook Na; Hojin Kim; Hyungdong Roh; Youngjae Cho; Michael Choi; Min-Seong Choo; Jeongjin Roh (IEEE Trans. Circuits Syst. II Express Briefs, 2024)