Publications

(*:corresponding author)

2022

K. -S. Choi, K. -M. Kim, D. R. Utomo, I. -Y. Lee* and S. -G. Lee, "A Fully Integrated 490-GHz CMOS Receiver Adopting Dual-Locking Receiver-Based FLL," in IEEE Journal of Solid-State Circuits, vol. 57, no. 9, pp. 2626-2639, Sept. 2022.

2020

K. -S. Choi, D. R. Utomo, K. -M. Kim, B. -H. Yun, S. -G. Lee and I. -Y. Lee*, “A 490GHz -101.3dBm 32mW Fully Integrated CMOS Imager Adopting Dual-Locking Receiver-Based FLL,” IEEE International Solid-State Circuits Conference (ISSCC), Dig. Tech. Papers, pp. 452-454, Feb 2020. 

I. -Y. Lee, and D. Im*, “Low phase noise ring VCO employing input-coupled dynamic current source,” IET Electronics Letters, vol. 56, no. 2, pp. 76-78, Jan. 2020.

2019

D. Kim, D. Im, and I. -Y. Lee*, “A RF PVT Compensated Negative Resistance Circuit for Q-factor Improvement of Passive Elements in CMOS,” Journal of Semiconductor Technology and Science, vol. 19, no. 5, pp. 498-502, Oct. 2019.

2017

D. Im, K. Kwon and I. -Y. Lee*, “A 1.9-GHz silicon-on-insulator CMOS stacked-FET power amplifier with uniformly distributed voltage stresses,” International Journal of Circuit Theory and Applications, vol. 45, issue 11, pp. 1660-1672, Nov. 2017.

 

I. -Y. Lee and D. Im*, “Low-power SOI CMOS antenna switch driver circuit with RF leakage suppression and fast switching time,” IET Electronics Letters, vol. 53, no. 5, pp. 293-294, Mar. 2017.

J. Lee, J. Lee, C. Lo, J. Lee, I. -Y. Lee, B. Han, S. Oh and T. Cho*, “A Reconfigurable Analog Baseband Transformer for Multi-standard Applications in 14nm FinFET CMOS,” IEEE Asian Solid-State Circuits Conference (A-SSCC), pp. 5-8, Nov. 2017.

2016

D. Im and I. -Y. Lee*, “A High IIP2 Broadband CMOS Low-Noise Amplifier With a Dual-Loop Feedback,” IEEE Trans. Microwave Theory and Techniques, vol. 64, no. 7, pp. 2068-2079, July. 2016.

 

2015

I. -Y. Lee, D. Im, J. Ko and S. -G. Lee*, “A 50-450MHz Tunable RF Biquad Filter Based on Wideband Source Follower with >26dBm IIP3, +12dBm P1dB, and <15dB Noise Figure,” IEEE Journal of Solid-State Circuits, vol. 50, no. 10, pp. 2294-2305, Oct. 2015.

I. -Y. Lee, S. Kim, S. -S. Lee, J. Choi, J. Ko and S. -G. Lee*, “Spur Reduction Techniques With a Switched-Capacitor Feedback Differential PLL and a DLL-Based SSCG in UHF RFID Transmitter,” IEEE Trans. Microwave Theory and Techniques, vol. 63, no. 4, pp. 1202-1210, Apr. 2015.

2014

J. Choi, I. -Y. Lee, K. Lee, S. -O. Yun, J. Kim, J. Ko, G. Yoon and S. -G. Lee*, “A 5.8-GHz DSRC Transceiver With a 10-uA Interference-Aware Wake-Up Receiver for the Chinese ETCS,” IEEE Trans. Microwave Theory and Techniques, vol. 62, no. 12, pp. 3146-3160, Dec. 2014.

S. Kim, I. -Y. Lee, S. -S. Lee, M. -S. Kil, J. Choi, J. Ko and S. -G. Lee*, “A UHF-band RFID Transmitter with Spur Reduction Technique using a DLL-based Spread-Spectrum Clock Generator,” IEEE Radio Frequency Integrated Circuits Symp. (RFIC), 2014.

I. -Y. Lee, et al., “A Fully Integrated TV Tuner Front-End with 3.1dB NF, >+31dBm OIP3, >83dB HRR3/5 and >68dB HRR7,” IEEE International Solid-State Circuits Conference (ISSCC), Dig. Tech. Papers, pp. 70-71, Feb 2014.

2013

S. Kim, J. -M. Kim, I. -Y. Lee and S. -G. Lee*, “A Type-I ΔΣ Fractional-N Frequency Synthesizer Adopting a New Discrete-Time Loop Filter,” IEEE Microwave and Wireless Components Letters, vol. 23, no. 10, pp. 545-547, Oct. 2013.

J. -Y. Bae, S. Kim, H. -S. Cho, I. -Y. Lee, D. S. Ha and S. -G. Lee*, “A CMOS Wideband Highly Linear Low-Noise Amplifier for Digital TV Applications,” IEEE Trans. Microwave Theory and Techniques, vol. 61, no. 10, pp. 3700-3711, Oct. 2013.

J. -M. Kim, S. Kim, I. -Y. Lee, S. -K. Han and S. -G. Lee*, “A Low-Noise Four-Stage Voltage-Controlled Ring Oscillator in Deep-Submicrometer CMOS Technology,” IEEE Trans. Circuits and Systems II, vol. 60, no. 2, pp. 71-75, Feb. 2013.

S. -S. Lee, J. Lee, I. -Y. Lee, S. -G. Lee and J. Ko, “A New TX Leakage-Suppression Technique for an RFID Receiver Using a Dead-Zone Amplifier,” IEEE International Solid-State Circuits Conference (ISSCC), Dig. Tech. Papers, pp. 91-93, Feb 2013.

2012

S. Kim, I. -Y. Lee, J. -M. Kim and S. -G. Lee*, “A Quantization Noise Cancelling Fractional-N type ΔΣ Frequency Synthesizer using SAR-based DAC Gain Calibration,” IEEE Custom Integrated Circuits Conf. (CICC), 2012.

J. -Y. Bae, S. Kim, I. -Y. Lee, J. Cartwright and S. -G. Lee*, “A CMOS Highly Linear Low-Noise Amplifier for Digital TV Applications,” IEEE Radio Frequency Integrated Circuits Symp. (RFIC), pp. 21-24, 2012.

2011

V. -H. Le, H. -N. Nguyen, I. -Y. Lee, S. -K. Han and S. -G. Lee, “A Passive Mixer for a Wideband TV Tuner,” IEEE Trans. Circuits and Systems II, vol. 58, no. 7, pp. 398-401, July. 2011.

Y. Sun, I. -Y. Lee, C. -J. Jeong, S. -K. Han and S. -G. Lee, “A Comparator Based Active Rectifier for Vibration Energy Harvesting Systems,” IEEE International Conference on Advanced Communications Technology, 2011.

J. -S. Lee, C. -J. Jeong, Y. -S. Jang, I. -Y. Lee, S. -S. Lee, S. -K. Han and S .-G. Lee, “A High Linear Low Flicker Noise 25% Duty Cycle LO I/Q Mixer for a FM Radio Receiver,” IEEE International Symp. of Circuits and Systems (ISCAS)., 2011.

2010

Y. Sun, C. J. Jeong, I. Y. Lee, J. S. Lee and S. G. Lee, “A 50-300-MHz Low Power and High Linear Active RF Tracking Filter for Digital TV Tuner ICs,” IEEE Custom Integrated Circuits Conf (CICC)., 2010.

2009

I. -Y. Lee, et al., “A Low-Parasitic and Common-Centroid Cross-Coupled CMOS Transistor Structure for High-Frequency VCO Design,” IEEE Electron Device Letters, vol. 30, no. 5, pp. 532-534, May 2009.

2008

S. -J. Yun, N. D. B. Yen, I. -Y. Lee, J. -T. Lee and S. -G. Lee, “A Differentially-Tuned Voltage Controlled Oscillator Using Symmetric Transformer,” IEEE Microwave and Wireless Components Letters, vol. 18, no. 7, pp. 464-466, July. 2008.

2010

I. -Y. Lee et al., “Switch, negative resistance cell, and differential voltage controlled oscillator using the same,” 7741922, June. 2010.

U.S. Patents

2016

S. Kim, I. -Y. Lee, M. -S. Kil, J. Choi, J. Ko, “Spread-spectrum clock generator”, 10-1603093, Mar.2016.

I. -Y. Lee, J. Ko, “RF filter”, 10-1600877, Mar. 2016.

I. –Y. Lee, D. Im, J. Ko, “Low noise amplifier”, 10-1592936, Feb. 2016.

2014

S. -G. Lee, J. -M. Kim, I. -Y. Lee, S. -K. Han, “High resolution DCO structure for quantization noise reduction”, 10-1402945, May. 2014.

I. -Y. Lee, J. Ko, “Voltage-controlled oscillator”, 10-2014-0002035, Jan. 2014.

2008

I.-Y. Lee et al., “Switch, negative resistance cell, and differential voltage controlled oscillator using the same”, 0874772, Dec. 2008.

Domestic Patents