New UWB Transceiver architecture (dual-conversion) (2003.11)
Sub-band Generator Architecture development (2003. 11)
New Wideband LNA topology (2004. 5)
UWB receiver/transmitter Design using 0.18um CMOS Tenology (2004.5).
Publications
Chang-Wan Kim, Mun-Suk Jung, and Sang-Gug Lee, "An Ultra-wideband CMOS Low Noise Amplifier", accepted on Electronics Letters, (SCI)
Chang-Wan Kim, Seung-Sik Lee, Bong-Hyuk Park, Yun-a Shim, and Sang-Gug Lee, “ A CMOS Direct-Conversion I/Q Up-Mixer Block for Ultra-wideband System”, 7th International Conference on Advanced Communication Technology (ICACT2005), Phoenix Park, Korea, Feb 21-23, 2005.
Chang-Wan Kim, Min-Suk Kang, Phan Tuan Anh, Hoon-Tae Kim, and Sang-Gug Lee, "An Ultra-Wideband CMOS Low Noise Amplifier for 3 ~ 5 GHz UWB System" Solid-State Circuits, IEEE Journal of, Volume: 40 , No. 2 , pp. 544 ? 547, Feb, 2005, (SCI).
Anh-Tuan Phan, Chang-Wan Kim, Min-Suk Kang, Chun-Deok Su, Hoon-Tea Kim, and Sang-Gug Lee, "A High Performance CMOS Direct Down Conversion Mixer For UWB System" to be at ACM/IEEE, 2004 Great Lakes Symposium on VLSI (GLSVLSI), Boston, MA, USA, April 26-28, 2004.
Anh-Tuan Phan, Chang-Wan Kim, Min-Suk Kang, Chun-Deok Su and Sang-Gug Lee, "Low Noise And High Gain CMOS Down Conversion Mixer", International Conference on Communications, Circuits and Systems, China, 27-29 June, 2004.
Anh-Tuan Phan, Chang-Wan Kim, Choon-Yul Cha, Min-Suk Kang, Chun-Deok Su, Hoon-Tae Kim and Sang-Gug Lee, "A Low Noise Image Rejection Down CMOS Mixer" IEEE, 2004 International Midwest Symposium on Circuits and Systems (MWSCAS'04), Hiroshima, Japan, July 25-28, 2004.
Anh- Tuan Phan, Chang- Wan Kim, Min-Suk Kang, Mun- Suk Chong, Chun- Deok Su and Sang- Gug Lee, "A Novel Image Rejection CMOS Mixer Using T-Structure Filter", to be presented at The fifth IEEE International Caracas Conference on Devices, Circuits and Systems (ICCDCS 2004 , Punta Cana, Dominican Republic, November 3-5, 2004.
Anh- Tuan Phan, Chang- Wan Kim, Min-Suk Kang, Chun- Deok Su and Sang- Gug Lee, "Frequency-Controllable Image Rejection Down CMOS Mixer", to be presented at The fifth IEEE International Caracas Conference on Devices, Circuits and Systems (ICCDCS 2004 , Punta Cana, Dominican Republic, November 3-5, 2004.
C.-W. Kim, S.-B. Shin, S.-M. Oh, S.-G. Lee, B.-H. Park, "2GHz Direct- Conversion CMOS Up-Mixer Block.” 2002 Asia-Pacific Microwave Conference (APMC 2002), Japan, Nov 2002.
Seung-Min Oh, Chang-Wan Kim, and Sang-Guk Lee , “A 74%, 1.56-2.71 GHz, Wide-tunable LC-tuned VCO in 0.35um CMOS technology.” Microwave and Optical Technology Letters,(SCI), April 2003.issue