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李宇根

个人简介

         于1991年获得韩国国立大学电子工程学士学位,于1993年在美国加州大学洛杉矶分校取得电气工程硕士学位,并于2001年获得美国伊利诺伊大学厄巴纳-香槟分校的电气与计算机工程博士学位.

        从1997年到2001年, 他在美国加州纽波特海滩的Conexant Systems公司担任首席工程师,主要负责低功耗、低成本小数分频型频率综合器的设计工作. 从2001年到2006年, 他在美国纽约约克镇高地的 IBM 汤姆生-沃森研发中心从事高速I/O串口时钟设计,包括低抖动锁相环、时钟数据恢复和片上可测性电路设计. 从2006年8月起, 他在清华大学微电子学研究所担任副教授.他当前的研发领域有:应用于wireline/wireless系统的低功耗、低成本时钟和频率合成器; 应用于无线体域网和无线传感器网络的低功耗射频前端电路. 他在时钟和频率合成器领域有12项美国专利. 李宇根博士是 IEEE 电路与系统杂志(TCAS-II)的副主编,同时也是IEEE多个国际会议的技术委员会成员,包括国际固态电路会议(ISSCC)、亚洲固态电路会议(A-SSCC)、 VLSI-DAT和 CMOS Emerging Technology Workshop.他获得过2007年IBM优秀员工成就奖.

出版物

所发表的论文:

[1] Bowen Wang, Woogeun Rhee, Zhihua Wang, A 65-nm Sub-10-mW Communication/Ranging Quadrature Uncertain-IF IR-UWB Transceiver With Twin-OOK Modulation, IEEE Journal of Solid-State Circuits, 2023.

[2] Bo Zhou, Yifan L, Zuhang Wang, Chen Wang, Woogeun Rhee, Zhihua Wang, A Low-Complexity FM-UWB Transmitter With Digital Reuse and Analog Stacking, IEEE Journal of Solid-State Circuits, Vol.PP, No.99, pp.1-12, 2023.

[3] Liqun Feng, Woogeun Rhee, Zhihua Wang, A DTC-Free Fractional-N BBPLL With FIR-Embedded Injection-Locked-Oscillator-Based Phase-Domain Lowpass Filter, IEEE Journal of Solid-State Circuits, Vol.PP, No.99, pp.1-12, 2023.

[4] Bowen Wang, Woogeun Rhee, Zhihua Wang, A Quadrature Uncertain-IF IR-UWB Transceiver with Twin-OOK Modulation, ISSCC 2023, pp.1-3, 2023.

[5] Liqun Feng, Woogeun Rhee, Zhihua Wang, A 2.6GHz ΔΣ Fractional-N Bang-Bang PLL with FIR-Embedded Injection-Locking Phase-Domain Low-Pass Filter, CICC 2023, pp.1-2, 2023.

[6] Yunzhao Nie, Woogeun Rhee, Zhihua Wang, A 17.3mW IEEE 802.15.4/4z Coherent Quadrature Hybrid Correlation UWB Receiver in 65nm CMOS, ESSCIRC 2023, pp.53-56, 2023.

[7] Liqun Feng, Qianxian Liao, Woogeun Rhee, Zhihua Wang, A Low-Voltage Bias-Current-Free Pseudo-Differential Hybrid PLL Using a Time-Interleaving Flip-Flop Phase Detector, A-SSCC 2023, pp.1-3, 2023.

[8] Yunzhao Nie, Woogeun Rhee, Zhihua Wang, A 405ps/20% Delay Range, 7.4mW/ns BPF-Based Delay Cell with ISI Mitigation for 7.5-8.5GHz IR-UWB Beamforming Receivers, ICTA 2023, pp.19-20, 2023.

[9] Bowen Wang, Haixin Song, Woogeun Rhee, Zhihua Wang, Overview of Ultra-Wideband Transceivers—System Architectures and Applications, Tsinghua Science and Technology, Vol.27, No.3, pp.481-494, 2022.

[10] Liqun Feng, Woogeun Rhee, Zhihua Wang, A Quantization Noise Reduction Method for Delta-Sigma Fractional-N PLLs Using Cascaded Injection-Locked Oscillators, IEEE Transactions on Circuits and Systems II: Express Briefs, Vol.69, No.5, pp.2448-2452, 2022.

[11] Su Han, Bowen Wang, Woogeun Rhee, Zhihua Wang, An 8GHz Communication/Ranging IR-UWB Transmitter with Asymmetric Pulse Shaping and Frequency Hopping for Fine Ranging and Enhanced Link Margin, ISCAS 2022, pp.757-760, 2022.

[12] Zixiang Wan, Xinyu Xu, Woogeun Rhee, Zhihua Wang, A 0.0048mm2 0.43-to-1.0V 0.54-to-1.76GHz Bias-Current-Free PLL in 14nm FinFET CMOS, ICTA 2022, pp.76-77, 2022.

[13] Luhua Lin, Bowen Wang, Woogeun Rhee, Zhihua Wang, An Analog-Assisted Digital LDO with 0.37mV Output Ripple and 5500x Load Current Range in 180nm CMOS, ICTA 2022, pp.106-107, 2022.

[14] Jiahao Zhao, Xuansheng Ji, Su Han, Ziwei Wang, Woogeun Rhee, Zhihua Wang, A 0.7-2.5GHz NB-loT/GNSS/BLE Hybrid PLL with PA Pulling Mitigation and Out-of-Band Phase Noise Reduction, ICTA 2022, pp.74-75, 2022.

[15] Bowen Wang, Haixin Song, Woogeun Rhee, Zhihua Wang, A 7.25-7.75GHz 5.9mW UWB Transceiver with -23.8dBm NBI Tolerance and 1.5cm Ranging Accuracy Using Uncertain IF and Pulse-Triggered Envelope/Energy Detection, CICC 2022, pp.1-2, 2022.

[16] Bowen Wang, Cong Ding, Yunzhao Nie, Woogeun Rhee, Zhihua Wang, A 0.14nJ/b 200Mb/s Quasi-Balanced FSK Transceiver with Closed-Loop Modulation and Sideband Energy Detection, CICC 2022, pp.1-2, 2022.

[17] Bowen Wang,Haixin Song,Woogeun Rhee,Zhihua Wang, Overview of ultra-wideband transceivers—system architectures and applications, Tsinghua Science and Technology, Vol.27, No.3, pp.481-494, 2021.

[18] Xinyu Xu,Zixiang Wan,Woogeun Rhee,Zhihua Wang, A Bias-Current-Free Fractional-N Hybrid PLL for Low-Voltage Clock Generation, IEEE Transactions on Circuits and Systems I: Regular Papers, Vol.68, No.9, pp.3611-3620, 2021.

[19] Meng Ni,Xiao Wang,Fule Li,Woogeun Rhee,Zhihua Wang, A 13-Bit 2-GS/s Time-Interleaved ADC With Improved Correlation-Based Timing Skew Calibration Strategy, IEEE Transactions on Circuits and Systems I: Regular Papers, Vol.PP, No.99, pp.1-14, 2021.

[20] Cong Ding,Bowen Wang,Haxin Song,Woogeun Rhee,Zhihua Wang, A 3.5-GHz 0.24-nJ/b 100-Mb/s Fully Balanced FSK Receiver With Sideband Energy Detection, IEEE Solid-State Circuits Letters, Vol.4, pp.26-29, 2021.

[21] Zixiang Wan,Woogeun Rhee,Zhihua Wang, Design and Analysis of DTC-Free ΔΣ Bang-Bang Phase-Locked Loops, ISCAS 2021, pp.1-4, 2021.

[22] Jiahao Zhao,Yining Zhang,Kunnong Zeng,Woogeun Rhee,Zhihua Wang, A 2.4-GHz Crystal-Less GFSK Receiver Using an Auxiliary Multiphase BBPLL for Digital Output Demodulation With Enhanced Frequency Scaling, IEEE Transactions on Circuits and Systems II: Express Briefs, Vol.PP, No.99, pp. 1 - 1, 2020.

[23] Xuqiang Zheng,Fangxu Lv,Lei Zhou,Danyu Wu,Jin Wu,Chun Zhang,Woogeun Rhee,Xinyu Liu, Frequency-Domain Modeling and Analysis of Injection-Locked Oscillators, IEEE Journal of Solid-State Circuits, Vol.55, No.6, pp. 1651 - 1664, 2020.

[24] Haixin Song,Dang Liu,Yining Zhang,Woogeun Rhee,Zhihua Wang, A 6.5–8.1-GHz Communication/Ranging VWB Transceiver for Secure Wireless Connectivity With Enhanced Bandwidth Efficiency and ΔΣ Energy Detection, IEEE Journal of Solid-State Circuits, Vol.55, No.2, pp. 219 - 232, 2020.

[25] Xiaohua Huang,Bowen Wang,Woogeun Rhee,Zhihua Wang, A 5.4GHz ΔΣ Bang-Bang PLL with 19dB In-Band Noise Reduction by Using a Nested PLL Filter, VLSI-DAT 2020, pp. 1 - 2, 2020.

[26] Bowen Wang,Woogeun Rhee,Zhihua Wang, A Sub-10fs FOM, 5000x Load Driving Capacity and 5mV Output Ripple Digital LDO with Dual-Mode Nonlinear Voltage Detector and Dead-Zone Charge Pump Loop, RFIC 2020, pp. 315 - 318, 2020.

[27] Yuguang Liu,Woogeun Rhee,Zhihua Wang, A 1Mb/s 2.86% EVM GFSK Modulator Based on ΔΣ BB-DPLL without Background Digital Calibration, RFIC 2020, pp. 7 - 10, 2020.

[28] Meng Ni,Xiao Wang,Zhe Zhou,Yang Ding,Fule Li,Woogeun Rhee,Zhihua Wang, A Correlation-based Timing Skew Calibration Strategy Using a Time-Interleaved Reference ADC, MWSCAS 2020, pp. 345 - 348, 2020.

[29] Meng Ni,Xiao Wang,Zhe Zhou,Yang Ding,Fule Li,Woogeun Rhee,Zhihua Wang, A 13-bit 312.5-MS/s Pipelined SAR ADC with Integrator-type Residue Amplifier and Inter-stage Gain Stabilization Technique, MWSCAS 2020, pp. 341 - 344, 2020.

[30] Xinyu Xu,Woogeun Rhee,Zhihua Wang, A Low-Spur Current-Biasing-Free Fractional-N Hybrid PLL for Low-Voltage Clock Generation, ISCAS 2020, pp. 1 - 4, 2020.

[31] Zixiang Wan,Woogeun Rhee,Zhihua Wang, A Nonlinearity-Calibration-Free Reconfigurable ADPLL for General Purpose Frequency Modulation, ICTA 2020, pp.19-20, 2020.

[32] Haixin Song,Woogeun Rhee,Zhihua Wang, A 6-8GHz Multichannel Reconfigurable Pulse-Based Transceiver with 3.5ns Processing Latency and 1cm Ranging Accuracy for Secure Wireless Connectivity, CICC 2020, pp. 1 - 4, 2020.

[33] Zhendong Ding,Xinyu Xu,Haixin Song,Woogeun Rhee,Zhihua Wang, Flash ADC-based digital LDO with non-linear decoder and exponential-ratio array, Electronics Letters, Vol.55, No.10, pp. 585 - 587, 2019.

[34] Yining Zhang,Haixin Song,Ranran Zhou,Woogeun Rhee,Zhihua Wang, A Capacitor-less Ripple-less Hybrid LDO With Exponential Ratio Array and 4000x Load Current Range, IEEE Transactions on Circuits and Systems II: Express Briefs, Vol.66, No.1, pp. 36 - 40, 2019.

[35] Haixin Song,Dang Liu,Yining Zhang,Woogeun Rhee,Zhihua Wang, A 6.5-8.1-GHz Communication/Ranging VWB Transceiver for Secure Wireless Connectivity With Enhanced Bandwidth Efficiency and ΔΣ Energy Detection, IEEE Journal of Solid-State Circuits, Vol.PP, No.99, pp. 1 - 14, 2019.

[36] Yining Zhang,Meng Ni,Xiaohua Huang,Woogeun Rhee,Zhihua Wang, A 3.7-mW 2.4-GHz Phase-Tracking GFSK Receiver With BBPLL-Based Demodulation, IEEE Journal of Solid-State Circuits, Vol.54, No.2, pp. 336 - 345, 2019.

[37] Yining Zhang,Jiahao Zhao,Woogeun Rhee,Zhihua Wang, Design and Analysis of Data-Pattern-Insensitive Phase-Tracking Receivers with Fully-Balanced FSK Modulation, VLSI-DAT 2019, pp. 1 - 4, 2019.

[38] Yuguang Liu,Haixin Song,Kunnong Zeng,Woogeun Rhee,Zhihua Wang, A 9mW 6-9GHz 2.5Gb/s Proximity Transmitter with Combined OOK/BPSK Modulation for Low Power Mobile Connectivity, VLSI-DAT 2019, pp. 1 - 4, 2019.

[39] Xiaohua Huang,Kunnong Zeng,Woogeun Rhee,Zhihua Wang, A Noise and Spur Reduction Technique for ΔΣ Fractional-N Bang-Bang PLLs with Embedded Phase Domain Filtering, ISCAS 2019, pp. 1 - 4, 2019.

[40] Cong Ding,Woogeun Rhee,Zhihua Wang, A Gaussian-Filtered Fully-Balanced FSK Modulator with Integer-N PLL Based 1+-Point Modulation, ISCAS 2019, pp. 1 - 4, 2019.

[41] Xinyu Xu,Woogeun Rhee,Zhihua Wang, Enhanced FIR-embedded noise reduction method with hybrid phase detection for semidigital fractional-N phase-locked loops, ICTA 2019, pp. 94 - 95, 2019.

[42] Kunnong Zeng,Woogeun Rhee,Zhihua Wang, A BBPLL-Based Demodulator with Multiphase and Feedforward Linearization Methods for Phase-Tracking Receivers, EDSSC 2019, pp. 1 - 3, 2019.

[43] Xiaohua Huang,Kunnong Zeng,Yuguang Liu,Woogeun Rhee,Taeik Kim,Zhihua Wang, A 5GHz 200kHz/5000ppm Spread-Spectrum Clock Generator with Calibration-Free Two-Point Modulation Using a Nested-Loop BBPLL, CICC 2019, pp. 1 - 4, 2019.

[44] Cong Ding,Haixin Song,Woogeun Rhee,Zhihua Wang, A 100Mb/s 3.5GHz Fully-Balanced BFOOK Modulator Based on Integer-N Hyrbrid PLL, A-SSCC 2019, pp. 291 - 294, 2019.

[45] Yanshu Guo,Hanjun Jiang,Heng Liu,Zhaoyang Weng,Woogeun Rhee,Chun Zhang,Zhihua Wang, A 120 pJ/bit ΔΣ -Based 2.4-GHz Transmitter Using FIR-Embedded Digital Power Amplifier, IEEE Transactions on Circuits and Systems II: Express Briefs, Vol.65, No.12, pp. 1854 - 1858, 2018.

[46] Fei Chen,Woogeun Rhee,Zhihua Wang, A 5-mW 750-kb/s Noninvasive Transceiver for Around-the-Head Audio Applications, IEEE Transactions on Circuits and Systems II: Express Briefs, Vol.65, No.2, pp. 196 - 200, 2018.

[47] Xiaohua Huang,Dang Liu,Woogeun Rhee,Zhihua Wang, A 1-GHz 1.6-mW Auto-Calibrated Bit Slicer for Energy/Envelope Detection Receivers, IEEE Transactions on Circuits and Systems II: Express Briefs, Vol.65, No.5, pp. 587 - 591, 2018.

[48] Zhaoyang Weng,Hanjun Jiang,Jingjing Dong,Yang Li,Jingyi Zheng,Yiyu Shen,Fule Li,Woogeun Rhee,Zhihua Wang, 400-MHz/2.4-GHz Combo WPAN Transceiver IC for Simultaneous Dual-Band Communication With One Single Antenna, IEEE Transactions on Circuits and Systems I: Regular Papers, Vol.65, No.2, pp. 745 - 757, 2018.

[49] Jianfu Lin,Zheng Song,Nan Qi,Woogeun Rhee,Zhihua Wang,Baoyong Chi, A 77-GHz Mixed-Mode FMCW Signal Generator Based on Bang-Bang Phase Detector, IEEE Journal of Solid-State Circuits, Vol.53, No.10, pp. 2850 - 2863, 2018.

[50] Xiaohua Huang,Han Liu,Woogeun Rhee,Zhihua Wang, A DS DPLL with 1b TDC, 4b DTC and 8-Tap FIR Filter For Low-Voltage Clock Generation/Modulation Systems, VLSI-DAT 2018, pp. 1 - 2, 2018.

[51] Xiaohua Huang,Han Liu,Woogeun Rhee,Zhihua Wang, A ΔΣ DPLL with 1b TDC, 4b DTC and 8-tap FIR filter for low-voltage clock generation/modulation systems, VLSI-DAT 2018, pp. 1 - 4, 2018.

[52] Zhendong Ding,Woogeun Rhee,Zhihua Wang, A VCO-dedicated digital LDO with multi-comparator coarse loop and 1-bit ΔΣ fine loop for robust frequency generation, IWS 2018, pp. 1 - 4, 2018.

[53] Yuguang Liu,Haixin Song,Woogeun Rhee,Zhihua Wang, A 13.5mW 4Gb/s Filter-less UWB Transmitter for High Data Rate Mobile Applications, ICSICT 2018, pp. 1 - 3, 2018.

[54] Dang Liu,Xiaohua Huang,Zhendong Ding,Haixin Song,Woogeun Rhee,Zhihua Wang, A 26.6mW 1Gb/s dual-antenna wideband receiver with auto beam steering for secure proximity communications, CICC 2018, 2018.

[55] Haixin Song,Dang Liu,Woogeun Rhee,Zhihua Wang, A 6-8GHZ 200MHz Bandwidth 9-Channel VWB Transceiver with 8 Frequency-Hopping Subbands, A-SSCC 2018, pp. 295 - 298, 2018.

[56] Yining Zhang,Ranran Zhou,Woogeun Rhee,Zhihua Wang, A 1.9-mW 750-kb/s 2.4-GHz F-OOK Transmitter With Symmetric FM Template and High-Point Modulation PLL, Journal of Solid-State Circuits, Vol.52, No.10, pp.2627 - 2635, 2017.

[57] Xiaoyong Li,Sitao Lv,Woogeun Rhee,Wen Jia,Zhihua Wang, 20-Mb/s GFSK Modulator Based on 3.6-GHz Hybrid PLL With 3-b DCO Nonlinearity Calibration and Independent Delay Mismatch Control, IEEE Transactions on Microwave Theory and Techniques, Vol.65, No.7, pp. 2387 - 2398, 2017.

[58] Xican Chen,Yiyu Shen,Zhicheng Wang,Woogeun Rhee,Zhihua Wang, A 17 mW 3-to-5 GHz Duty-Cycled Vital Sign Detection Radar Transceiver With Frequency Hopping and Time-Domain Oversampling, IEEE Transactions on Circuits and Systems I: Regular Papers, Vol.64, No.4, pp. 969 - 980, 2017.

[59] Dang Liu,Xuwen Ni,Ranran Zhou,Woogeun Rhee,Zhihua Wang, A 0.42-mW 1-Mb/s 3- to 4-GHz Transceiver in 0.18- μm CMOS With Flexible Efficiency, Bandwidth, and Distance Control for IoT Applications, IEEE Journal of Solid-State Circuits, Vol.52, No.6, pp. 1479 - 1494, 2017.

[60] Woogeun Rhee,Dang Liu,Yining Zhang,Zhihua Wang, Energy-efficient proprietary transceivers for IoT and smartphone-based WPAN, RFIT 2017, pp. 40 - 42, 2017.

[61] Han Liu,Sitao Lv,Xiaohua Huang,Woogeun Rhee,Zhihua Wang, A fractional-NBB-DPLL with auto-tuned DTC and FIR filter for noise and spur reduction, RFIT 2017, pp. 238 - 240, 2017.

[62] Yudong Zhang,Xiaofeng Liu,Woogeun Rhee,Hanjun Jiang,Zhihua Wang, A 0.6V 50-to-145MHz PVT tolerant digital PLL with DCO-dedicated ΔΣ LDO and temperature compensation circuits in 65nm CMOS, ISCAS 2017, pp. 1 - 4, 2017.

[63] Ranran Zhou,Yining Zhang,Woogeun Rhee,Zhihua Wang, An Energy/Bandwidth/Area Efficient Frequency-Domain OOK Transmitter with Phase Rotated Modulation, ISCAS 2017, pp. 1 - 4, 2017.

[64] Yining Zhang,Ranran Zhou,Woogeun Rhee,Zhihua Wang, A 6.1mW 5Mb/s 2.4GHz transceiver with F-OOK modulation for high bandwidth and energy efficiencies, CICC 2017, pp. 1 - 4, 2017.

[65] Xiaofeng Liu,Dang Liu,Woogeun Rhee,Zhihua Wang, A Multiphase Clock Generation for UWB Transceiver, Microelectronics & Computer, Vol.33, No.11, pp. 87-90+94, 2016.

[66] Hanjun Jiang,Zhaoyang Weng,Yang Li,Jingjing Dong,Woogeun Rhee,Zhihua Wang, A 10 Mbps 0.3 nJ/bit OQPSK transceiver IC for 400-450 MHz medical telemetry, Electronics Letters, Vol.52, No.22, pp. 1830 - 1832, 2016.

[67] Hanjun Jiang,Zhaoyang Weng,Yang Li,Jingjing Dong,Woogeun Rhee,Zhihua Wang, 10 Mbps 0.3 nJ/bit OQPSK transceiver IC for 400–450 MHz medical telemetry, Electronics Letters, Vol.52, No.22, pp. 1830-1832, 2016.

[68] Haixin Song,Woogeun Rhee,Inbo Shim,Zhihua Wang, Digital LDO with 1-bit ΔΣ modulation for low-voltage clock generation systems, Electronics Letters, Vol.52, No.25, pp. 2034 - 2036, 2016.

[69] Sitao Lv,Ni Xu,Woogeun Rhee,Zhihua Wang, A Hybrid Frequency/Phase-Locked Loop for Versatile Clock Generation with Wide Reference Frequency Range, VLSI-DAT 2016, pp. 1 - 4, 2016.

[70] Yining Zhang,Xuwen Ni,Woogeun Rhee,Zhihua Wang, A 1.8mW 2Mb/s Chirp-UWB Transceiver with Burst-Mode Transmission and Slope-Based Detection, RFIT 2016, pp. 1 - 3, 2016.

[71] Xuwen Ni,Woogeun Rhee,Zhihua Wang, A 0.3mW 1Mb/s High Security Proximity UWB Transmitter with Frequency/Time-Domain Scrambling, RFIT 2016, pp. 1 - 3, 2016.

[72] Xuwen Ni,Yining Zhang,Woogeun Rhee,Wen Jia,Zhihua Wang, A 0.5mW 1Mb/s Multi-Channel Chirp-UWB Transmitter with Burst-Mode Transmission and Optimized Digital Gradient, IWS 2016, pp. 1 - 4, 2016.

[73] Han Liu,Woogeun Rhee,Zhihua Wang, A 10.3mW 13.6GHz Phase-Locked Loop with Boosted Gm Two-Stage Ring VCO, ICSICT 2016, 2016.

[74] Ranran Zhou,Yining Zhang,Woogeun Rhee,Zhihua Wang, 2.4GHz 20Mb/s FSK Receiver Front-End and Transmitter Modulation PLL Design for Energy-Efficient Short-Range Communication, EDSSC 2016, 2016.

[75] Yining Zhang,Ranran Zhou,Woogeun Rhee,Zhihua Wang, A 1.9mW 750kb/s 2.4GHz F-OOK transmitter with symmetric FM template and high-point modulation PLL, A-SSCC 2016, pp. 277 - 280, 2016.

[76] Yudong Zhang,Woogeun Rhee,Taeik Kim,Hojin Park,Zhihua Wang, A 0.35–0.5-V 18–152 MHz Digitally Controlled Relaxation Oscillator With Adaptive Threshold Calibration in 65-nm CMOS, IEEE Transactions on Circuits and Systems II: Express Briefs, Vol.62, No.8, pp. 736 - 740, 2015.

[77] Ni Xu,Woogeun Rhee,Zhihua Wang, A 2 GHz 2 Mb/s Semi-Digital 2+-Point Modulator With Separate FIR-Embedded 1-Bit DCO Modulation in 0.18 μm CMOS, IEEE Microwave and Wireless Components Letters, Vol.25, No.4, pp. 253 - 255, 2015.

[78] Shuli Geng,Dang Liu,Yanfeng Li,Huiying Zhuo,Woogeun Rhee,Zhihua Wang, A 13.3 mW 500 Mb/s IR-UWB Transceiver With Link Margin Enhancement Technique for Meter-Range Communications, IEEE Journal of Solid-State Circuits, Vol.50, No.3, pp. 669 - 678, 2015.

[79] Xican Chen,Woogeun Rhee,Zhihua Wang, Low power sensor design for IoT and mobile healthcare applications, China Communications, Vol.12, No.5, pp. 42 - 54, 2015.

[80] Yanfeng Li,Yutao Liu,Woogeun Rhee,Zhihua Wang, A high-PSRR ADPLL with self-regulated GRO TDC and DCO-dedicated voltage regulator, VLSI-DAT 2015, pp. 1 - 4, 2015.

[81] Yudong Zhang,Woogeun Rhee,Zhihua Wang,Taeik Kim,Hojin Park, A 0.55V 100MHz ADPLL with ΔΣ LDO and Relaxation DCO in 65nm CMOS, RFIT 2015, pp. 190 - 192, 2015.

[82] Ni Xu,Sitao Lv,Woogeun Rhee,Zhihua Wang, A digital-intensive F/PLL-based two-point modulator with a constant-gain DCO for linear FMCW generation, RFIT 2015, pp. 193 - 195, 2015.

[83] Heng Liu,Hanjun Jiang,Yiyu Shen,Woogeun Rhee,Zhihua Wang, A Delta-Sigma-Based Transmitter Utilizing FIR Embedded Digital Power Amplifiers, MWSCAS 2015, 2015.

[84] Xiaoyong Li,Sitao Lv,Xiaofeng Liu,Ni Xu,Woogeun Rhee,Wen Jia,Zhihua Wang, A 10 Mb/s Hybrid Two-Point Modulator with Front-End Phase Selection and Dual-Path DCO Modulation, IWS 2015, pp. 1 - 4, 2015.

[85] Xiaoyong Li,Woogeun Rhee,Wen Jia,Zhihua Wang, A multi-bit FIR filtering technique for two-point modulators with dedicated digital high-pass modulation path, ISCAS 2015, pp. 894 - 897, 2015.

[86] Yiyu Shen,Woogeun Rhee,Zhihua Wang, A digital power amplifier with FIR-embedded 1-Bit high-order ΔΣ modulation for WBAN polar transmitters, ISCAS 2015, pp. 662 - 665, 2015.

[87] Chao Yang,Shaoquan Gao,Jingjing Dong,Hanjun Jiang,Woogeun Rhee,Zhihua Wang, A 2.4 GHz two-point Δ-Σ modulator with gain calibration and AFC for WPAN/BAN applications, ASICON 2015, pp. 1 - 4, 2015.

[88] Yutao Liu,Woogeun Rhee,Zhihua Wang, Microelectronics, Vol.44, No.3, pp.1, 2014.

[89] Xican Chen,Wei Zhang,Woogeun Rhee,Zhihua Wang, A ΔΣ-TDC-Based Beamforming Method for Vital Sign Detection Radar Systems, IEEE Transactions on Circuits and Systems II: Express Briefs, Vol.61, No.12, pp. 932 - 936, 2014.

[90] Shuai Yuan,Ziqiang Wang,Xuqiang Zheng,Ke Huang,Ni Xu,Woogeun Rhee,Liji Wu,Chun Zhang, A 4.8-mW/Gb/s 9.6-Gb/s 5+1-Lane Source-Synchronous Transmitter in 65-nm Bulk CMOS, IEEE Transactions on Circuits and Systems II: Express Briefs, Vol.61, No.4, pp. 209 - 213, 2014.

[91] Yutao Liu,Yizhi Han,Woogeun Rhee,Tae-Young Oh,Zhihua Wang, A PSRR Enhancing Method for GRO TDC Based Clock Generation Systems, IEEE Transactions on Circuits and Systems I: Regular Papers, Vol.61, No.3, pp. 680 - 688, 2014.

[92] Ni Xu,Woogeun Rhee,Zhihua Wang, A Hybrid Loop Two-Point Modulator Without DCO Nonlinearity Calibration by Utilizing 1 Bit High-Pass Modulation, IEEE Journal of Solid-State Circuits, Vol.49, No.10, pp. 2172 - 2186, 2014.

[93] Wei Zhang,Yizhi Han,Fei Chen,Bo Zhou,Xican Chen,Woogeun Rhee,Zhihua Wang, A 3.5–4GHz FMCW radar transceiver design with phase-domain oversampled ranging by utilizing a 1-bit ΔΣ TDC, VLSI-DAT 2014, pp. 1 - 4, 2014.

[94] Huiying Zhuo,Yu Li,Woogeun Rhee,Zhihua Wang, A 1.5GHz all-digital frequency-locked loop with 1-bit ΔΣ frequency detection in 0.18μm CMOS, VLSI-DAT 2014, pp. 1 - 4, 2014.

[95] Yu Li,Fei Chen,Dang Liu,Xiaoyong Li,Yang Li,Yudong Zhang,Zhicheng Wang,Woogeun Rhee,Zhihua Wang, A 1.6Mb/s 3.75–4.25GHz chirp-UWB transceiver with enhanced spectral efficiency in 0.18μm CMOS, RFIT 2014, pp. 1 – 3, 2014.

[96] Fei Chen,Yu Li,Dang Liu,Woogeun Rhee,Jongjin Kim,Dongwook Kim,Zhihua Wang, A 1mW 1Mb/s 7.75-to-8.25GHz chirp-UWB transceiver with low peak-power transmission and fast synchronization capability, ISSCC 2014, pp. 162 - 163, 2014.

[97] Shuli Geng,Dang Liu,Yanfeng Li,Huiying Zhuo,Woogeun Rhee,Zhihua Wang, A 13.3mW 500Mb/s IR-UWB Transceiver with Link-Margin Enhancement Technique for Meter-Range Communications, ISSCC 2014, pp. 160 - 161, 2014.

[98] Yanfeng Li,Ni Xu,Woogeun Rhee,Zhihua Wang, A 2.5GHz ADPLL with PVT-insensitive ΔΣ dithered time-to-digital conversion by utilizing an ADDLL, ISCAS 2014, pp. 1440 - 1443, 2014.

[99] Dang Liu,Shuli Geng,Woogeun Rhee,Zhihua Wang, A high efficiency robust IR-UWB receiver design for high data rate CM-range communications, ISCAS 2014, pp. 1901 - 1904, 2014.

[100] Yiyu Shen,Xican Chen,Woogeun Rhee,Zhihua Wang, A second-order multi-bit ΔΣ TDC for high resolution IR-UWB radar systems, IEEE-IWS 2014, pp. 1 - 4, 2014.

[101] Yu Li,Fei Chen,Woogeun Rhee,Zhihua Wang, A chirp-UWB transceiver with embedded bulk PPM for energy efficient data transmission, IEEE-IWS 2014, pp. 1 - 4, 2014.

[102] Zhicheng Wang,Xican Chen,Yiyu Shen,Woogeun Rhee,Zhihua Wang, A 2.5–4.5 GHz CMOS fast settling PLL for IR-UWB radar applications, ICSICT 2014, pp. 1 - 3, 2014.

[103] Zhicheng Wang,Xican Chen,Yiyu Shen,Woogeun Rhee,Zhihua Wang, A 3.1–4.8-GHz delay-line-based frequency-hopping IR-UWB transmitter in 65-NM CMOS technology, ICSICT 2014, pp. 1 - 3, 2014.

[104] Yang Li,Ni Xu,Yining Zhang,Wooguen Rhee,Sanghoon Kang,Zhihua Wang, A 0.65V 1.2mW 2.4GHz/400MHz dual-mode phase modulator for mobile healthcare applications, A-SSCC 2014, pp. 261 - 264 , 2014.

[105] Bo Zhou,Woogeun Rhee,Dongwook Kim,Zhihua Wang, Reconfigurable FM-UWB transmitter design for robust short range communications, Telecommunication Systems, Vol.52, No.2, pp. 1133 - 1144, 2013.

[106] Woogeun Rhee,Ni Xu,Bo Zhou,Zhihua Wang, Fractional-N Frequency Synthesis: Overview and Practical Aspects with FIR-Embedded Design, Journal of Semiconductor Technology and Science, Vol.13, No.2, pp. 170 - 183, 2013.

[107] Fei Chen,Wei Zhang,Woogeun Rhee,Jongjin Kim,Dongwook Kim,Zhihua Wang, A 3.8-mW 3.5–4-GHz Regenerative FM-UWB Receiver With Enhanced Linearity by Utilizing a Wideband LNA and Dual Bandpass Filters, IEEE Transactions on Microwave Theory and Techniques, Vol.61, No.9, pp. 3350 - 3359, 2013.

[108] Wei Zhang,Xican Chen,Fei Chen,Woogeun Rhee,Zhihua Wang, A Phase-Domain Delta Sigma Ranging Method for FMCW Radar Receivers, IEEE Transactions on Circuits and Systems II-Express Briefs, Vol.60, No.9, pp. 537 - 541, 2013.

[109] Bo Zhou,Fei Chen,Woogeun Rhee,Zhihua Wang, A Reconfigurable FM-UWB Transceiver for Short-Range Wireless Communications, IEEE Microwave and Wireless Components Letters, Vol.23, No.7, pp. 371 - 373, 2013.

[110] Y. Han,D. Lin,Shuli Geng,Ni Xu,Woogeun Rhee,T-Y Oh,Zhihua Wang, All-digital PLL with ΔΣ DLL embedded TDC, Electronics Letters, Vol.49, No.2, pp. 93 - 94, 2013.

[111] Hang Lv,Bo Zhou,Dang Liu,Woogeun Rhee,Yongming Li,Zhihua Wang, A 5.2–11.8MHz octa-phase relaxation oscillator for 8-PSK FM-UWB transceiver systems, VLSI-DAT 2013, pp. 1 - 4, 2013.

[112] Dang Liu,Fei Chen,Woogeun Rhee,Zhihua Wang, An FM-UWB transceiver with M-PSK subcarrier modulation and regenerative FM demodulation, MWSCAS 2013, pp. 936 – 939, 2013.

[113] Shuli Geng,Ni Xu,Jun Li,Xueyi Yu,Woogeun Rhee,Zhihua Wang, A PLL/DLL Based CDR with Delta-Sigma Frequency Tracking and Low Algorithmic Jitter Generation, ISCAS 2013, pp. 1179 - 1182, 2013.

[114] Fei Chen,Yu Li,Deyuan Lin,Huiying Zhuo,Woogeun Rhee,Jongjin Kim,Dongwook Kim,Zhihua Wang, A 1.14mW 750kb/s FM-UWB transmitter with 8-FSK subcarrier modulation, CICC 2013, pp. 1 - 4, 2013.

[115] Bo Zhou,Jian Qiao,Rui He,Jinghui Liu,Wei Zhang,Hang Lv,Woogeun Rhee,Yongming Li,Zhihua Wang, A Gated FM-UWB System With Data-Driven Front-End Power Control, IEEE Transactions on Circuits and Systems I-Regular Papers, Vol.59, No.6, pp. 1348 - 1358, 2012.

[116] Nan Qi,Yang Xu,Baoyong Chi,Yang Xu,Xiaobao Yu,Xing Zhang,Ni Xu,Patrick Chiang,Woogeun Rhee, Zhihua Wang, A Dual-Channel Compass/GPS/GLONASS/Galileo Reconfigurable GNSS Receiver in 65 nm CMOS With On-Chip I/Q Calibration, IEEE Transactions on Circuits and Systems -I: Regular papers, Vol.59, No.8, pp. 1720 - 1732, 2012.

[117] Yuanfeng Sun,Zhuo Zhang,Ni Xu,Min Wang,Woogeun Rhee,Tae-Young Oh,Zhihua Wang, A 1.75 mW 1.1 GHz Semi-Digital Fractional-N PLL With TDC-Less Hybrid Loop Control, IEEE Microwave and Wireless Components Letters, Vol.22, No.12, pp. 654 - 656, 2012.

[118] Fei Chen,Wei Zhang,Woogeun Rhee,Jongjin Kim,Dongwook Kim,Zhihua Wang, A 3.8mW, 3.5–4GHz regenerative FM-UWB receiver with enhanced linearity by utilizing a wideband LNA and dual bandpass filters, RFIT 2012, pp. 150 - 152, 2012.

[119] Yuanfeng Sun,Jun Li,Zhuo Zhang,Min Wang,Ni Xu,Hang Lv,Woogeun Rhee,Yongming Li,Zhihua Wang, A 2.74–5.37GHz boosted-gain type-I PLL with <15% loop filter area, RFIC 2012, pp. 181 - 184, 2012.

[120] Yizhi Han,Woogeun Rhee,Zhihua Wang, A PVT-Insensitive Self-Dithered TDC Design by Utilizing a DS DLL, MWSCAS 2012, pp. 542 - 545, 2012.

[121] Shuli Geng,Woogeun Rhee,Zhihua Wang, A pulse-shaped power amplifier with dynamic bias switching for IR-UWB transmitters, ISCAS 2012, pp. 2529 - 2532, 2012.

[122] Wei Zhang,Woogeun Rhee,Zhihua Wang, A ΔΣ IR-UWB Radar with Sub-mm Ranging Capability for Human Body Monitoring Systems, ISCAS 2012, pp. 1315 - 1318, 2012.

[123] Ke Huang,Chen Jia,Xuqiang Zheng,Ni Xu,Chun Zhang,Woogeun Rhee,Zhihua Wang, A 9.6Gb/s 5+1-lane source synchronous transmitter in 65nm CMOS technology, ISCAS 2012, pp. 313 - 316, 2012.

[124] Deyuan Lin,Ni Xu,Woogeun Rhee,Zhihua Wang, An 11.7–17.2GHz digitally-controlled oscillator in 65nm CMOS for high-band UWB applications, ICSICT 2012, pp. 1 - 3, 2012.

[125] Yizhi Han,Woogeun Rhee,Zhihua Wang, Design and Analysis of a Robust All-Digital Clock Generation System with a DLL-based TDC, CECNet 2012, pp. 3152 - 3156, 2012.

[126] Shuli Geng,Xican Chen,Woogeun Rhee,Jongjin Kim,Dongwook Kim,Zhihua Wang, A Power-Efficient All-Digital IR-UWB Transmitter with Configurable Pulse Shaping by Utilizing a Digital Amplitude Modulation Technique, A-SSCC 2012, pp. 85 - 88, 2012.

[127] Zhuo Zhang,Xican Chen,Woogeun Rhee,Zhihua Wang, A Cint-less type-II PLL with ΔΣ DAC based frequency acquisition and reduced quantization noise, A-SSCC 2012, pp. 301 - 304, 2012.

[128] Ni Xu,Woogeun Rhee,Zhihua Wang, Semidigital PLL design for low-cost low-power clock generation, Journal of Electrical and Computer Engineering, Vol.2011, pp. 1 - 9, 2011.

[129] Yuanfeng Sun,Jian Qiao,Xueyi Yu,Woogeun Rhee,Byeong-Ha Park,Zhihua Wang, A continuously tunable hybrid LC-VCO PLL with mixed-mode dual-path control and bi-level delta-sigma modulated coarse tuning, IEEE Transactions on Circuits and Systems I-Regular Papers, Vol.58, No.9, pp. 2149 - 2158, 2011.

[130] Bo Zhou,Woogeun Rhee,Zhihua Wang, Relaxation Oscillator with Quadrature Triangular and Square Waveform Generation, Electronics Letters, Vol.47, No.13, pp. 779 - 780, 2011.

[131] Bo Zhou,Woogeun Rhee,Zhihua Wang, Reconfigurable FM-UWB Transmitter, Electronics Letters, Vol.47, No.10, pp. 628 - 629, 2011.

[132] Jun Li,Bo Zhou,Yuanfeng Sun,Woogeun Rhee,Zhihua Wang, Reconfigurable, Spectrally Efficient, High Data Rate IR-UWB Transmitter Design Using a Δ–Σ PLL Driven ILO and a 7-Tap FIR Filter, VLSI-DAT 2011, pp. 1 - 4, 2011.

[133] Woogeun Rhee,Bo Zhou,Zhihua Wang, Fractional-N frequency synthesis: Overview and design perspectives, RFIT 2011, pp. 125 - 128, 2011.

[134] Bo Zhou,Hang Lv,Min Wang,Jinghui Liu,Woogeun Rhee,Yongming Li,Dongwook Kim,Zhihua Wang, A 1Mb/s 3.2–4.4GHz reconfigurable FM-UWB transmitter in 0.18μm CMOS, RFIC 2011, pp. 1 - 4, 2011.

[135] Ni Xu,Zhuo Zhang,Yuanfeng Sun,Woogeun Rhee,Zhihua Wang, Technology-Friendly Phase-Locked Loops, MWSCAS 2011, pp. 1 - 4, 2011.

[136] Hang Lv,Bo Zhou,Woogeun Rhee,Yongming Li,Zhihua Wang, A Relaxation Oscillator with Multi-Phase Triangular Waveform Generation, ISCAS 2011, pp. 2837 - 2840, 2011.

[137] Zhuo Zhang,Woogeun Rhee,Zhihua Wang, A Wide-Tuning Quasi-Type-I PLL with Voltage-Mode Frequency Acquisition Aid, ISCAS 2011, pp. 474 - 477, 2011.

[138] Min Wang,Bo Zhou,Woogeun Rhee,Zhihua Wang, Continuously Auto-Tuned and Self-Ranged Dual-path PLL design with Hybrid AFC, ICICDT 2011, pp. 1 - 4, 2011.

[139] Yuanfeng Sun,Xueyi Yu,Woogeun Rhee,Sangsoo Ko,Wooseung Choo,Byeong-Ha Park,Zhihua Wang, Dual-Path LC VCO Design With Partitioned Coarse-Tuning Control in 65 nm CMOS, IEEE Microwave and Wireless Components Letters, Vol.20, No.3, pp. 169 - 171 , 2010.

[140] Yuanfeng Sun,Xueyi Yu,Woogeun Rhee,Dawn Wang,Zhihua Wang, A Fast Settling Dual-Path Fractional-N PLL With Hybrid-Mode Dynamic Bandwidth Control, IEEE Microwave and Wireless Components Letters, Vol.20, No.8, pp. 462 - 464, 2010.

[141] Bo Zhou,Jian Qiao,Woogeun Rhee,Zhihua Wang, Relaxation Oscillator with Quadrature Triangular Waveform Generation, Electronic Letters, pp. 1 - 4, 2010.

[142] Xueyi Yu,Chengwen Liu,Woogeun Rhee,Zhihua Wang, Digitally controlled oscillator with FIR-embedded ΔΣ modulation, Electronic Letters, pp. 97 - 100, 2010.

[143] Xueyi Yu,Jian Qiao,Woogeun Rhee,Joon-Young Park,Kyongsu Lee,Zhihua Wang, A Semi-Digital Cascaded CDR With Fast Phase Acquisition and Adaptive Resolution Control, VLSI-DAT 2010, pp. 307 - 310, 2010.

[144] Yuanfeng Sun,Xueyi Yu,Woogeun Rhee,Sangsoo Ko,Wooseung Choo,Byeong-Ha Park,Zhihua Wang, Low-Noise Fractional-N PLL Design with Mixed-Mode Triple-Input LC VCO in 65nm CMOS, RFIC 2010, pp. 61 - 64, 2010.

[145] Jun Li,Ni Xu,Woogeun Rhee,Zhihua Wang, A -131dBc@1M PhaseNoise, 74% Spectral Efficiency, GA optimized FIR impulse radio UWB transmitter, PrimeAsia 2010, pp. 384 - 387, 2010.

[146] Chengwen Liu,Rui He,Xueyi Yu,Woogeun Rhee,Zhihua Wang, A Latency-Proof Quantization Noise Reduction Method for Digitally-Controlled Ring Oscillators, MWSCAS 2010, pp. 97 – 100, 2010.

[147] Woogeun Rhee,Ni Xu,Bo Zhou,Zhihua Wang, Low Power, Non Invasive UWB Systems for WBAN and Biomedical Applications, ICTC 2010, pp. 35 - 40, 2010.

[148] Zhuo Zhang,Jun Li,Yuanfeng Sun,Woogeun Rhee,Zhihua Wang, A Digitally Reconfigurable Auto Amplitude Calibration Method for Wide Tuning Range VCO Design, ICSICT 2010, pp. 542 - 544, 2010.

[149] Bo Zhou,Rui He,Jian Qiao,Jinghui Liu,Woogeun Rhee,Zhihua Wang, A Low Data Rate FM-UWB Transmitter with Δ−Σ Based Sub-Carrier Modulation and Quasi-Continuous Frequency-Locked Loop, A-SSCC 2010, pp. 1 - 4, 2010.

[150] Rui He,Chengwen Liu,Xueyi Yu,Woogeun Rhee,Joon Young Park,Kyongsu Lee,Changhyun Kim,Zhihua Wang, A Low-Cost, Leakage-Insensitive Semi-Digital PLL with Linear Phase Detection And FIR-Embedded Digital Frequency Acquisition, A-SSCC 2010, pp. 1 - 4, 2010.

[151] Yutao Liu,Woogeun Rhee,Ziqiang Wang,Zhihua Wang, Power and jitter optimized VCO design using an on-chip supply noise monitoring circuit, APCCAS 2010, pp. 939 - 942, 2010.

[152] Jun Li,Ni Xu,Yuanfeng Sun,Woogeun Rhee,Zhihua Wang, Reconfigurable, Fast AFC Technique Using Code Estimation and Binary Search Algorithm for 0.2-6GHz Software-Defined Radio Frequency Synthesis, APCCAS 2010, pp. 1135 - 1138, 2010.

[153] Baoyong Chi,Li Zhang,Woogeun Rhee,Zhihua Wang,Hongyi Chen, A 2.4 GHz 6.6 mA fully differential CMOS PLL frequency synthesizer, International Journal of Electronics, Vol.96, No.10, pp. 1039 - 1056, 2009.

[154] Xueyi Yu,Yuanfeng Sun,Woogeun Rhee,Zhihua Wang, An FIR-embedded noise filtering method for ΔΣ fractional-N PLL clock generators, IEEE Journal of Solid-State Circuits, Vol.44, No.9, pp. 2426 - 2436, 2009.

[155] Li Zhang,Xueyi Yu,Yuanfeng Sun,Woogeun Rhee,Wang, D.,Zhihua Wang,Hongyi Chen, A hybrid spur compensation technique for finite-modulo fractional-N phase-locked loops, IEEE Journal of Solid-State Circuits, Vol.44, No.11, pp. 2922 - 2934, 2009.

[156] Xueyi Yu,Yuanfeng Sun,Woogeun Rhee,Hyung Ki Ahn,Byeong-Ha Park,Zhihua Wang, A ΔΣ fractional-N synthesizer with customized noise shaping for WCDMA/HSDPA applications, IEEE Journal of Solid-State Circuits, Vol.44, No.8, pp. 2193 - 2201, 2009.

[157] Xueyi Yu,Woogeun Rhee,Zhihua Wang,Jung-Bae Lee,Changhyun Kim, A 0.4-to-1.6GHz low-OSR ΔΣ DLL with self-referenced multiphase generation, ISSCC 2009, pp. 398 - 399, 2009.

[158] Yuanfeng Sun,Jian Qiao,Jun Li,Rui He,Chengwen Liu,Woogeun Rhee,Sung Hun Woo,Zhihua Wang, A Low-Cost, Multi-Standard ΔΣ Fractional-N Synthesizer Design for WiMAX/WLAN Applications, ISOCC 2009, pp. 100 - 103, 2009.

[159] Jian Chen,Xueyu Yu,Li Yugen,Zhihua Wang, Customized Zero Frequency Control for Hybrid FIR Noise Filtering in ΔΣ Fractional-N PLL, ISCAS 2009, pp. 2401 - 2404, 2009.

[160] Rui He,Jun Li,Woogeun Rhee,Zhihua Wang, Transient Analysis of Nonlinear Settling Behavior in Charge-Pump Phase-Locked Loop Design, ISCAS 2009, pp. 469 - 472, 2009.

[161] Jun Li,Woogeun Rhee,Zhihua Wang, A Dual-Carrier IR-Based UWB Transmitter with Improved Spectral Efficiency, ICCCAS 2009, pp. 788 - 792, 2009.

[162] Xueyi Yu,Yuanfeng Sun,Woogeun Rhee,Sangsoo Ko,Wooseung Choo,Byeong-Ha Park,Zhihua Wang, A 65nm CMOS 3.6GHz fractional-N PLL with 5th-order ΔΣ modulation and weighted FIR filtering, A-SSCC 2009, pp. 77 - 80, 2009.

[163] Xueyi Yu,Yuanfeng Sun,Li Zhang,Woogeun Rhee,Zhihua Wang, A 1GHz Fractional-N PLL Clock Generator with Low-OSR ΔΣ Modulation and FIR-Embedded Noise Filtering, ISSCC 2008, pp. 346 - 347. , 2008.

[164] Xueyi Yu,Yuanfeng Sun,Woogeun Rhee,Zhihua Wang,Hyung Ki Ahn,Byeong-Ha Park, A ΔΣ fractional-N synthesizer with customized noise shaping for WCDMA/HSDPA applications, CICC 2008, pp. 753 - 756, 2008.

[165] Li Zhang,Xueyi Yu,Yuanfeng Sun,Woogeun Rhee,Zhihua Wang,Hongyi Chen,Wang, D., A hybrid spur compensation technique for finite-modulo fractional-N phase-locked loops, A-SSCC 2008, pp. 417 - 420, 2008.

[166] Baoyong Chi,Xueyi Yu,Woogeun Rhee,Zhihua Wang, A fractional-N PLL for digital clock generation with an FIR-embedded frequency divider, ISCAS 2007, pp. 3051 - 3054, 2007.

所持专利:

[1] 李宇根,聂云昭,王志华. 准平衡频移键控调制方法及准平衡调频发射机: 中国, 202210535280.0[P].

[2] 李宇根,韩溯,王志华. 一种非对称脉冲超宽带发射机系统: 中国, 202210384491.9[P].

[3] 李宇根,汪博闻,王志华. 一种自同步脉冲超宽带信号基带调制电路与解调电路: 中国, 202210302388.5[P]. 2023-03-14.

[4] 李宇根,万子祥,王志华. 一种通用频率调制器和频率调制方法、装置: 中国, 202110262312.X[P].

[5] 李宇根,汪博闻,王志华. 一种准相干脉冲超宽带接收机及信号解调方法: 中国, 202110229180.0[P]. 2022-4-12.

[6] 李宇根,宋海昕,王志华. 基于脉冲飞行时间测距的中继攻击防御方法及系统: 中国, 201910093208.5[P]. 2021-05-28.

[7] 李宇根,张益宁,周冉冉,王志华. 基于锁相环直接解调频率调制信号的电路系统及控制方法: 中国, 201811150180.6[P].

[8] 李宇根,张益宁,周冉冉,王志华. (实用新型)基于锁相环直接解调频率调制信号的电路系统: 中国, 201821608143.0[P]. 2019-02-26.

[9] 李宇根,张益宁,周冉冉,王志华. 检测窄带干扰或信道变化的频率调制信号解调系统: 中国, 201810368445.3[P].

[10] 贺娅君,王自强,李宇根,刘晗,张春,王志华,李福乐. 一种支持多协议的锁相环: 中国, 201611104156.X[P]. 2018-10-19.

[11] 李宇根,李小勇,贾雯,王志华. 调制器及其延时自动校准电路及延时控制模块: 中国, 201610058072.0[P]. 2018-10-09.

[12] 翁兆洋, 姜汉钧, 董晶晶, 杨超, 李宇根, 王志华. 两点调制发射机中高通通路数模转换器的增益校准方法: 中国, 201510194064.4[P]. 2017-04-19.

[13] Woogeun Rhee, Xican Chen, Jong Jin Kim, Dong Wook Kim, Zhihua Wang. Receiver, method of operating the receiver, and beamforming radar system including receiver: 美国, US9791561 B2[P]. 2017-10-17.

[14] 王志华, 陈霏, 李宇根. 助听装置: 中国, 201310625422.3[P]. 2016-08-17.

[15] 李宇根, 陈菲, 金钟珍, 金东郁, 王志华. 用于超宽带通信的设备和方法: 中国, 201310354498.7[P]. 2017-12-01.

[16] 耿树理, 李宇根, 金钟珍, 金东郁, 王志华. 用于产生高斯脉冲的设备和方法: 中国, 201310353879.3[P]. 2017-12-08.

[17] Woogeun Rhee, Fei Chen, Jong Jin Kim, Dong Wook Kim, Zhihua Wang. Apparatus and method for ultra wideband communication using dual band pass filter: 美国, US9172425 B2[P]. 2015-10-27.

[18] Shuli Geng, Woogeun Rhee, Jong Jin Kim, Dong Wook Kim, Zhihua Wang. Apparatus and method for generating gaussian pulse and ultra wideband communication apparatus for generating gaussian pulse: 美国, US9036679 B2[P]. 2015-05-19.

[19] 李宇根, 周波, 金钟珍, 金东郁, 王志华. FM-UWB通信系统中的用于降低功耗的发射机和接收机: 中国, 201310088632.3[P]. 2017-06-09.

[20] Woogeun Rhee, Bo Zhou, Jong-Jin Kim, Dong-Wook Kim, Zhihua Wang. Transmitter and receiver for reducing power consumption in fm-uwb communication system: 美国, US9253730 B2[P]. 2016-02-02.

[21] Woogeun Rhee, He Rui, Xueyi Yu, Tae-Young Oh, Joo-Sun Choi, Zhihua Wang. Phase-locked-loop circuit including digitally-controlled oscillator: 美国, US8368440 B2[P]. 2013-02-05.

[22] Woogeun Rhee, Xueyi Yu, Sung Cheol Shin, Zhihua Wang. Delay locked loop using hybrid FIR filtering technique and semiconductor memory device having the same: 美国, US8310886 B2[P]. 2012-11-13.

[23] Woogeun Rhee, Xueyi Yu, Joon-Young Park, Zhihua Wang. Delay locked loop and method and electronic device including the same: 美国, US8295106 B2[P]. 2012-10-23.

[24] Woogeun Rhee, Xueyi Yu, Yuanfeng Sun, Sang-Soo Ko, Byeong-Ha Park, Hyung-Ki Ahn, Woo-Seung Choo, Zhihua Wang. Frequency divider, frequency synthesizer and application circuit: 美国, US8446190 B2[P]. 2013-05-21.

加入ICAS之前的论文:

[1]W. Rhee, H. Ainspan, D. Friedman, T. Rasmus, S. Garvin, and C. Cranford, “A continuously tunable LC-VCO PLL with bandwidth linearization techniques for PCI Express Gen2 Applications,” Journal of Semiconductor Technology and Science, vol. 8, pp.200-209, Sept. 2008. 
[2]W. Rhee, K. Jenkins, J. Liobe, and H. Ainspan, “Experimental analysis of substrate noise effect on PLL performance,” IEEE Trans. on Circuits and Systems II, vol. 55, pp. 638-642, July 2008. (SCI)
[3]W. Rhee, B. Parker, and D. Friedman, “A semidigital delay-locked loop using an analog-based finite state machine,” IEEE Transactions on Circuits and Systems II, vol. 50, pp. 635-639, Nov. 2004. (SCI)
[4]W. Rhee, “Practical design aspects in fractional-N frequency synthesis,” Analog Circuit Design, Edited by A. van Roermund, M. Steyaert, and J. Huijsing, Springer Publishers, pp. 3-26, 2003. (SCI)
[5]W. Rhee, B. Song, and A. Ali, “A 1.1-GHz CMOS fractional-N frequency synthesizer with a 3-b third-order delta-sigma modulator,” Phase-Locking in High Performance Systems: From Devices to Architectures, Edited by B. Razavi, John Wiley & Sons, Inc., pp. 596-602, 2003. (SCI)
[6]W. Rhee, B. Bisanti, and A. Ali, “An 18-mW 2.5-GHz/900-MHz BiCMOS dual frequency synthesizer with <10-Hz RF carrier resolution,” IEEE Journal of Solid-State Circuits, vol. 37, pp. 515-520, Apr. 2002. (SCI)
[7]W. Rhee, B. S. Song, and A. Ali, “A 1.1-GHz CMOS fractional-N frequency synthesizer with a 3-b third-order delta-sigma modulator,” IEEE Journal of Solid- State Circuits, vol. 35, pp. 1453-1460, Oct. 2000. (SCI)
[8]W. Rhee, et al., “A uniform bandwidth PLL using a continuously tunable single-input dual-path LC VCO for 5Gb/s PCI Express Gen2 application,” in Proc. IEEE Asian Solid-State Circuits Conference (A-SSCC), Nov. 2007, pp. 63-66.
[9]W. Rhee, et al., “A 10-Gb/s CMOS clock and data recovery circuits using a secondary delay-locked loop,” in Proc. IEEE Custom Integrated Circuits Conf.(CICC), Sept. 2003, pp. 81-84.
[10]W. Rhee, B. Bisanti, and A. Ali, “An 18-mW 2.5-GHz/900-MHz BiCMOS dual frequency synthesizer with <10-Hz RF carrier resolution,” in Proc. IEEE European Solid-State Circuits Conference (ESSCIRC), Sept. 2000, pp. 224-227.
[11]W. Rhee, A. Ali, and B. S. Song, “A 1.1-GHz CMOS fractional-N frequency synthesizer with a 3-b third-order delta-sigma modulator,” in IEEE International Solid-State Circuits Conference (ISSCC) Digest Tech. Papers, Feb. 2000, pp. 198-199.
[12]W. Rhee, “Design of low jitter 1-GHz phase-locked loops for digital clock generation,” in Proc. IEEE International Symposium on Circuits and Systems (ISCAS), May, 1999, pp. 520-523.
[13]W. Rhee, “Design of high performance CMOS charge pumps for phase-locked loops,” in Proc. IEEE International Symposium on Circuits and Systems (ISCAS), May, 1999, pp. 545-548.
[14]W. Rhee and A. Ali, “An on-chip phase compensation technique in fractional-N frequency synthesis,” in Proc. IEEE International Symposium on Circuits and Systems (ISCAS), May, 1999, pp. 363-366.
[15]W. Rhee, “A low power, wide linear-range CMOS voltage-controlled oscillator,” in Proc. IEEE International Symposium on Circuits and Systems (ISCAS), May, 1998, pp. 85-88.