S. Kim, J. Lim, and S.-M. Han, “Co-simulation method using active device models in microwave simulators,” in Proc. Int’ Symp. Antennas Propag., Sydney, Australia, Oct. 2022.

S. Kim, W. Lee, J. Lim, and S.-M. Han, “Energy scavenging assisted power supply system for smart dust sensor applications,” in Proc. Int’l Union Radio Sci. (URSI) Meeting, Singapore, Dec. 2021.

Y. J. Kim, D. Seo, D. Ahn, W.-S. Yoon, and S.-M. Han, “Miniatured LPF design on a double-layered defected ground structure,” in 2006 IEEE AP-S Int’l Symp. Dig., Singapore, Dec. 2021, pp. 1087–1088.

W. Lee, Y. J. Kim, D. Seo, S. H. Kim, E. Y. Kim, D. M. Kim, and S.-M. Han, “Low-power wireless sensor node system for smart dust IoT applications,” in Proc. ICT 4s Health & Home 2020, Jeju, Korea, Dec. 2020, pp. 63–65.

J. Lim, Y. J. Kim, D. Seo, S. Kim, S. Koo, S.-H. Son, D. M. Kim, W.-S. Yoon, S.-M. Han, and D. Ahn, “An application of corrugated cardboard to the design of 90° hybrid couplers,” in Proc. ICT 4s Health & Home 2020, Jeju, Korea, Dec. 2020, pp. 9–12.

T. Kang, Y. Jang, J. Lim, S.-M. Han, and D. Ahn, “Design of air cavity filter with high selectivity,” in Proc. ICT 4s Health & Home 2020, Jeju, Korea, Dec. 2020, pp. 13–16.

Y.-J. Lee, S.–M. Han, D. M. Kim, and D. Ahn, ”A design of dual directional coupler to improve tight coupling,” in Proc. ICT 4s Health & Home 2020, Jeju, Korea, Dec. 2020, pp. 21–25.

J. Kim, Y. Jang, S. Koo, S.-M. Han, D. M. Kim, Y.-S. Jeong, and D. Ahn, “A parameter extraction method for accurate analysis of SAW resonator,” in Proc. ICT 4s Health & Home 2020, Jeju, Korea, Dec. 2020, pp. 1–4.

K. Jeong, S.-M. Han, S.-H. Son, and D. Ahn, “A new design of planar group delay equalizer using open-circuited stubs,” in Proc. ICT 4s Health & Home 2020, Jeju, Korea, Dec. 2020, pp. 17–20.

S.-M. Han, W.-S. Yoon, J. Lim, and D. Ahn, “Ultra-low power RF designs in smart dust IoT network applications,” in Proc. PIERS 2019, Xiamen, China, , pp. 734–735, Dec. 2019.

J. Kim, Y. Jang, D. Lee, S. Koo, T. H. Kang, M. Salman, J. Lim, S.-M. Han, and D. Ahn, “A design and implementation of Butler matrix with phase slope compensation,” in Proc. PIERS 2019, Rome, Italy, June 2019.

Y. Jang, M. Salman, Y. Jeong, K. Choi, S.-M. Han, and D. Ahn, “Wideband phase shifter using 3 types of LC resonant circuits for phase slope alignment,” in Proc. PIERS 2019, Rome, Italy, June 2019.

J. O. Kim, Y. Lee, J. Lim, D. Ahn, W.-S. Yoon, and S.-M. Han, “Flexible energy harvesting system for wearable IoT sensor device applications,” in Proc. APMC 2018, Kyoto, Japan, Nov. 2018.

J. Lim, D. Ahn, Q. Wang, Y. Jeong, S.-M. Han, and W.-S. Yoon, “Suppressing harmonics for microwave amplifiers using asymmetrical spiral-DGS,” in Proc. ISITC 2017, Jeonju, Korea, Oct. 2018, pp. 429-432.

M.-C. Hong, J.-H. Lee, J.-T. Oh, S.-M. Han, and W.-S. Yoon, “A wideband circularly polarized dipole antenna with crossed configuration,” in Proc. PIERS 2018, Toyama, Japan, Aug. 2018, p. 1227.

J. Lim, P. Pech, H. Choi, Y. Jeong, S.-M. Han, and D. Ahn, “Design of a size-reduced microwave amplifiers using an asymmetrical spiral-DGS,” in Proc. PIERS 2018, Toyama, Japan, Aug. 2018, p. 1211.

Y. Kim, J.-D. Ha, S.-J. Lee, J. Lim, S.-M. Han, and D. Ahn, “Compact size and wideband triplexer using SAW resonators and LC components,” in 2018 IEEE Int. Microw. Symp. Dig. (IMS 2018), Philadelphia, PA, USA, June 2018, pp. 856-859.

S.-M. Han, Y. Kim, and J.-H. Ahn, “A study of the TSV fabrication error detection method with large non-contact probes for 3-D IC applications,” in Proc. Int. Conf. Electronics, Electrical Eng., Computer Sci. 2018 (EEECS 2018), Feb. 2018.

J. O. Kim, J. Lim, D. Ahn, W.-S. Yoon, and S.-M. Han, “Low-power RF system architecture designs for IoT dust sensor applications,” in Proc. ISITC 2017, Shijiazhuang, China, Oct. 2017.

J. Lim, H. Choi, D. Ahn, Y. Jeong, S.-M. Han, and W.-S. Yoon, “Design of a wideband amplifier using a cascode structure and feedback network,” in Proc. ISITC 2017, Shijiazhuang, China, Oct. 2017.

S.-M. Han, J. Lim, D. Ahn, and W.-S. Yoon, “A study of active element characterization by de-embedded calibration measurements,” in Proc. URSI General Assembly & Scientific Symp. (GASS) 2017, Montreal, Canada, Aug. 2017.

S.-M. Han, S.-J. Lee, J. Lim, D. Ahn, and W.-S. Yoon, "Energy-harvesting RF system design for IoT sensor network applications," in Proc. PIERS 2017, St. Petersburg, Russia, p. 1708, May 2017.

J. Lim, B. An, Y. Jeong, S.-M. Han, D. Ahn, and K. Choi, "Application of transmission line-based inductors to dual-band branch line couplers," in Proc. PIERS 2017, St. Petersburg, Russia, pp. 1673–1674, May 2017.

D. Ahn, J. Lim, K. Choi, and S.-M. Han, “A new de-embedding technique for arbitrary N-port networks using ideal 1:j transformers,” in Proc. IEEE EDAPS 2016, Honolulu, USA, Dec. 2016, pp. 131–133.

J. Lim, S.-J. Lee, D. Ahn, B. An, Y. Jeong, and S.-M. Han, “Study for realization of arbitrary inductance values using distributed elements and capacitors,” in Proc. URSI Asia-Pacific Radio Sci. Conf.(AP-RASC) 2016, Seoul, Korea, Aug. 2016, pp. 1719–1721.

S.-M. Han, Seok-Jae Lee, and W.-S. Yoon, “RF/microwave processing in RF systems,” in Proc. PIERS 2016, Shanghai, China, Aug. 2016, p. 3220.

J. G. Hong, S.-J. Lee, J. Lim, W.-S. Yoon, and S.-M. Han, “RF spectrum sensing receiver system with improved frequency channel selectivity for cognitive IoT sensor network applications,” in 2016 IEEE Int. Microw. Symp. Dig. (IMS 2016), San Francisco, CA, USA, May 2016.

K. P. Lee, S.-M. Han, J. H. Oh, H. K. Choi, and Y. M. Kyaw, “Characteristics of ESPAR antenna with circumferential slot active element'” in Proc. ICGHIT 2016, Clark, Philippines, Feb. 2016, pp. 37­–38.

Y. Kim, S.-J. Lee, J.-H. Ahn, W.-S. Yoon, M. Swaminathan, and S.-M. Han, “TSV fault detection with large non-contact probes using capacitive coupling for 3-D IC applications,” in Proc. 2015 IEEE Electrical Design Adv. Packag. Syst. (IEEE EDAPS 2015), Seoul, Korea, Dec. 2015, pp. 58–61.

S.-J. Lee, K. Kim, and S.-M. Han, “Planar ESPAR antenna based on Yagi-Uda array design for space diversity applications,” in Proc. 2015 Asia-Pacific Microw. Conf. (APMC 2015), Nanjing, China, Dec. 2015.

J. Lim, Q. Wang, J. Park, Y. Jeong, S.-J. Lee, S.-M. Han, K.-S. Choi, and D. Ahn, “Design of a dual-band balanced amplifier using a CRLH transmission line structure,” in Proc. ISITC 2015, Tianjin, China, Oct. 2015, pp. 322–325.

Y. Kim, S.-J. Lee, J. Lim, D. Ahn, J.-H. Ahn, S.-H. Lee, and S.-M. Han, “Compact reconfigurable antenna design based on variable capacitive loading,” in Proc. PIERS 2015, Prague, Czech, July 2015, p. 885.

J. Lim, K. Kwon, S. Lee, S.-J. Lee, S.-M. Han, D. Ahn, and Y. Jeong, “A microstrip line with additional capacitive and inductive effects loaded,” in Proc. PIERS 2015, Prague, Czech, July 2015, p. 2002.

S.-A. Choi, S.-H. Lee, S.-M. Han, G.-H. Bae, and H.-K. Choi, “Quadrangular dipole EPSAR antenna characteristics using planar parasitic element,” in Proc. 2015 Int’l Conf. Green Human Inform. Technol. (ICGHIT 2015), Da Nag, Vietnam, Feb. 2015, pp. 271–273.

S.-M. Han, J. G. Hong, W.-S. Yoon, and J. Lim, “RF spectrum sensing technology for cognitive radio applications,” in Proc. 2015 Int’l Conf. Green Human Inform. Technol. (ICGHIT 2015), Da Nag, Vietnam, Feb. 2015, pp. 353–354.

J. Lim, H. Do, S.-J. Lee, S.-M. Han, and Dal Ahn, "Design of a size-reduced ring hybrid coupler using double-layered substrate and ground contact-free defected ground structure," in Proc. 2014 Int’l Symp. Info. Technol. Convergence (ISITC 2014), Jeonju, Korea, Oct. 2014, pp. 60–62.

J. Lim, J. Jeong, P. Kim, Y. Jeong, S.-M. Han, and D. Ahn, “4-way power divider using common DGS and stacked-substrate structure,” in Proc. PIERS 2014, Guangzhou, China, Aug. 26, 2014, p. 934.

M. Park, S.-J. Lee, B. Park, H.-J. Choi, D.-W. Lee, S.-M. Han, J. Lim, and Dal Ahn “A new de-embedding technique for electromagnetic based simulation software,” in Proc. 2014 Global Symp. Millimeter-Waves (GSMM 2014), Seoul, Korea, May 21, 2014.

J. Lim, K. Kwon, K. Mok, Y. Jeong, S.-M. Han, and D. Ahn, “A length-reduced microstrip line with inductive and capacitive perturbations,” in Proc. PIERS 2013, Stockholm, Sweden, Aug. 15, 2013, p. 1644.

S.-J. Lee, J. Lim, D. Ahn, and S.-M. Han, “Flexible microwave chipless tag system based on DGS resonators,” in Proc. 2013 IEEE Wireless Microw. Technol. Conf. (WAMICON 2013), Orlando, FL, USA, April 2013.

D. Ahn, T. Thap, J. Lim, and S.-M. Han, “The design of bandpass filter that uses disk resonator and parallel coupled lines,” in Proc. 2013 IEEE Wireless Microw. Technol. Conf. (WAMICON 2013), Orlando, FL, USA, April 2013.

J. Lim, J. Lee, Y. Jeon, K. Kwon, S.-M. Han, D. Ahn, and Y. Jeong, “Design of a miniaturized branch line coupler using common defected ground structure,” in 2012 IEEE Int’ Symp. Antennas, Propag. Dig., Chicago, USA, July, 2012.

J. Lim, J. Lee, K. Kwon, Y. Jeon, Y. Jeon, K. Choi, S.-M. Han, and D. Ahn, “A size-reduced ring hybrid using common DGS,” in Proc. Int’l Union Radio Sci. (URSI) Meeting, Chicago, USA, July, 2012.

J. Lim, Y. Jeon, K. Kwon, J. Lee, Y. Jeong, S.-M. Han, and D. Ahn, “Characteristic impedance of a defected microstrip line structure,” in Proc. PIERS 2012, Kuala Lumpur, Malaysia, March 2012, p. 708.

S.-M. Han, W.-S. Yoon, Y.-S. Kim, H. Lee, J. Lee, and J. Lim, “Channel cognitive super-regenerative receiver system,” in Proc. Asia-Pacific Microw. Conf. 2011 (APMC 2011), Melbourne, Australia, Dec. 2011, pp. 1350–1353.

H. Lee, S.-J. Lee, T. Choi, J. Lim, W.-S. Yoon, and S.-M. Han, “Wideband RF transceiver system with adjustable RF carrier,” in Proc. Int’ Symp. Antennas Propag.2011 (ISAP 2011), Jesu, Korea, Oct. 2011.

T. Choi, S.-J. Lee, H. Lee, S. Yu, J. Lim, D. Ahn, and S.-M. Han, “New design of a rectenna system using defected ground structures,” in Proc. PIERS 2011, Suzhou, China, Sep. 2011, p. 769.

J. Koo, J. Lee, J. Lee, J. Lim, Y. Jeong, S.-M. Han, and D. Ahn, “A design of size-reduced low pass filter using artificial dielectric substrate structure,” in Proc. PIERS 2011, Suzhou, China, Sep. 2011, p. 665.

J. Lee, J. Lee, J. Lim, Y. Jeong, S.-M. Han, and D. Ahn, “A miniaturized low pass filter using common defected ground structures,” in Proc. PIERS 2011, Suzhou, China, Sep. 2011, p. 768.

J. Lim, J. Lee, J. Lee, B. Kim, Y. Jeong, S.-M. Han, and D. Ahn, “A directional coupler using back-to-back microstrip lines and common defected ground window structures,” in Proc. PIERS 2011, Marrakesh, Morocco, March 2011, p.636.

W.-S. Yoon, H.-S. Lee, H.-J. Lee, J. Lim, Y.-S. Kim, and S.-M. Han, “A frequency tunable super-regenerative oscillator for channel selective receivers,” in Proc. IEEE Radio Wireless Symp. 2011 (RWS 2011), Phoenix, AZ, USA, Jan. 2011, pp. 227–230.

H.-S. Lee, W.-S. Yoon, S.-M. Han, D.-M. In, Y.-S. Kim, “A third-order subharmonic injection locked oscillator with wide locking range and low phase noise,” in Proc. 2010 Asia-Pacific Microw. Conf. (APMC 2010), Yokohama, Japan, Dec. 2010, pp. 504–507.

S.-J. Lee, H. Lee, W.-S. Yoon, S.-J. Park, J. Lim, D. Ahn, and S.-M. Han, “Circular polarized antenna with controlled current distribution by defected ground structures,” in Proc. ISAP2010, Macau, China, Nov. 2010, pp. 856–859.

K.-J. Lee, H.-J. Lee, S.-J. Lee, J. Lee, J. Lim, Y.-S. Kim, and S.-M. Han, “Channel selective RF receiver with spectrum sensing system,” in Proc. Int’ Symp. Antennas Propag.2010 (ISAP 2010), Macau, China, Nov. 2010, pp. 563–566.

J. Choi, S.-M. Han, S. Pyo, Y.-S. Kim, “Circularly polarized square microstrip antenna fed by proximity coupling,” in Proc. Int’ Symp. Antennas Propag.2010 (ISAP 2010), Macau, China, Nov. 2010, pp. 705–708.

J. Lim, J. Lee, J. Lee, Y. Jeong, S.-M. Han, K.-S. Choi, and D. Ahn, “Calculation of characteristic impedance of transmission lines,” in Proc. IEEE TENCON 2010, Fukuoka, Japan, Nov. 2010, pp. 1632–1635.

S. Pyo, M.-J. Lee, S.-M. Han, and Y.-S. Kim, “Inductive slot-loaded composite right/left-handed transmission line and its application to bandwidth-improved resonant antennas,” in Proc. European Microw. Conf. (EuMC) 2010, Paris, France, Sep. 2010, pp. 196–199.

J. Lim, J. Lee, J. Lee, Y. Jeong, S.-M. Han, and D. Ahn, “A calculation method for frequency dependent characteristic impedance and slow-wave factor of microwave transmission lines with a perturbation,” in Proc. PIERS 2010, X’ian, China, March 2010, p. 273.

S.-M. Han, O. Popov, S.-J. Park, D. Ahn, J. Lim, W.-S. Yoon, S. Pyo, Y.-S. Kim, “Adaptive calibration method for AM/PM distortion in nonlinear devices,” in Proc. Proc. IEEE Int’l Workshop Radio Freq. Integ. Techol. (RFIT) 2009, Singapore, Dec. 2009, pp. 76–79.

M. Kang, S. Park, K. Kim, S.-M. Han, J. Lim, K. Choi, and D. Ahn, “A new extraction method for the characteristic impedance and effective dielectric constant of transmission line with DGS,” in Proc. IEEE Int’l Workshop Radio Freq. Integ. Techol. (RFIT) 2009, Singapore, Dec. 2009, pp. 265–268.

J. Lim, C. Park, J. Koo, H. Cha, S.-M. Han, and D. Ahn, “A balanced power amplifier utilizing the reflected input power,” in Proc. IEEE Int’l Workshop Radio Freq. Integ. Techol. (RFIT) 2009, Singapore, Dec. 2009, pp. 88–91.

W.-S. Yoon, S.-M. Han, J.-W. Baik, S. Pyo, and Y.-S. Kim, “A compact microstrip antenna on a cross-shape slotted ground with a switchable circular polarization,” in Proc. 2009 Asia-Pacific Microw. Conf. (APMC), Singapore, Dec. 2009.

W.-S. Yoon, D.-H. Lee, K.-J. Lee, S.-H. Kim, S.-M. Han, and Y.-S. Kim, “A circular patch antenna for a switchable circular polarization sense with a slotted ground structure,” in Proc. IEEE Loughborough Antennas Propag. Conf. (LAPC 2009), Loughborough, UK, Nov. 2009, pp. 309–312.

J. Choi, S. Pyo, S.-M. Han, Y.-S. Kim, “Circularly polarized microstrip antennas using single-fed EM coupled ring resonators,” in Proc. Int’ Symp. Antennas Propag. (ISAP2009), Bangkok, Thailand, Oct. 2009, pp. 301–304.

M.-J. Lee, S. Pyo, J.-W. Baik, S.-M. Han, and Y.-S. Kim, “New planar magnetic monopole antenna with periodically arrayed patches and equilateral slots for reduced size and improved bandwidth,” in Proc. Int’ Symp. Antennas Propag. (ISAP2009), Bangkok, Thailand, Oct. 2009, pp. 305–308.

S. Pyo, J.-W. Baik, W.-S. Yoon, J. Choi, S.-M. Han, and Y.-S. Kim, “An offset-fed microstrip antenna with reusable harmonics based on a composite right/left-handed transmission line resonator,” in Proc. 2009 European Microw. Conf., Rome, Italy, Sep. 2009, pp. 1279–1282.

W.-S. Yoon, S.-M. Han, D.-H. Lee, J.-W. Baik, and Y.-S. Kim “A polarization switchable microstrip patch antenna with a circular slot,” in Proc. 2008 Asia-Pacific Microw. Conf., Hong Kong, China, Dec. 2008.

J. Han, S. Lee, S. Kim, and S.-M. Han, “Development of a home network gateway supporting both wire and wireless communication,” in Proc of The 2^nd Int’l Conf. on Future Generation Comm. & Networking (FGCN 2008), Sanya, China, Dec. 2008, pp. 86–89.

S.-M. Han, O. Popov, Y. S. Eo, “Chaotic UWB transceiver with tunable chaotic signal generation in CMOS 0.18um technology,” in Proc. 2007 European Microw. Conf., Munich, Germany, Oct. 2007, pp. 1578–1581.

M.-H. Son, K. Lee, J. Kim, S.-M. Han, and H. Park, “Multi-user chaotic UWB system for wireless connectivity applications,” in Proc. ITC-CSCC 2007, Busan, Korea, July 2007.

H. K. Yoon, W. S. Kang, Y. J. Yoon, S.-M. Han, Y.-H. Kim, "Rolled monopole with bandstop function for UWB applications," in Proc. 2006 Asia-Pacific Microw. Conf., Yokohama, Japan, Dec. 2006.

S.-M. Han, M.-H. Son, Y.-H. Kim, and S.-S. Lee, “Low-rate chaotic UWB transceiver system based on IEEE 802.15.4a,” in Proc. 2006 European Microw. Conf., Manchester, UK, Sep. 2006, pp. 1837–1840.

H. K. Yoon, Y. Lim, W. Lee, Y. J. Yoon, S.-M. Han, Y.-H. Kim, “UWB wide slot antenna with band-notch function,” in 2006 IEEE AP-S Int’l Symp. Dig., Albuquerque, NM, USA, July 2006, pp. 3059–3062.

S.-S. Lee, S.-M. Han, M.-H. Son, A. Dmitriev, and A. Panas, “Low power UWB RF transceiver for wireless headset,” in Proc. IEEE Int’l Workshop on Radio Freq. Integ. Techol. (RFIT), Singapore, Nov. 2005, pp. 61–64.

S.-M. Han, C.-S. Kim, S.-S. Lee, D. Ahn, and T. Itoh, “Higher phase-tunable phase shifters using DGS termination loads,” in Proc. 2005 European Microw. Conf., Paris, France, Oct. 2005, pp. 749–752.

Y. Horii, C. Caloz, S.-M. Han, and T. Itoh, “A super-compact diplexer composed of multi-layered composite right/left-handed transmission lines,” in Proc. 2004 Asia-Pacific Microw. Conf. (APMC 2014), New Deli, India, Dec. 2004.

S.-M. Han, J.-Y. Park, and T. Itoh, “Dual-fed circular sector antenna system for a rectenna and a RF receiver,” in Proc. 2004 European Microw. Conf., Amsterdam, Netherlands, Oct. 2004, pp. 1089–1092.

C.-J. Lee, C. Caloz, K. M. K. H. Leong, S.-M. Han, and T. Itoh, “A planar broadband antenna for UWB pulse transmission,” in Proc. 2004 European Microw. Conf. (EuMC 2004), Amsterdam, Netherlands, Oct. 2004, pp. 1329–1332.

S.-M. Han, J.-Y. Park, and T. Itoh, “Active integrated antenna based rectenna using the circular sector antenna with harmonic rejection,” in 2004 IEEE AP-S Int’l Symp. Dig., vol. 4. Monterey, CA, USA, June 2004, pp. 3533–3536.

S.-M. Han, K. H. Kwon, and Y.-S. Kim, “Coupled line phase shifters and its equivalent phase delay line for compact broadband phased array antenna applications,” in Proc. Progress In Electromagnetic Research Symposium (PIERS) 2003, Honolulu, HI, USA, Oct. 2003, p. 446.

S.-M. Han and Y.-S. Kim, “A compact broadband phased array antenna for IMT-2000,” in 2003 IEEE AP-S Int’l Symp. Dig., vol. 2, Columbus, OH, USA, June 2003, pp. 472–475.

S.-M. Han and Y.-S. Kim, “A strong coupled microstrip ring resonator using linearly tapered feedlines for bandpass filter applications,” in Proc. IEEE Radio and Wireless Conf. 2002, Boston, MA, USA, Aug. 2002, pp. 79–82.

J. Lee, S.-M. Han, and Y.-S. Kim, “Resonant frequency of dielectric resonator,” in Proc. IEEE Radio and Wireless Conf. (RAWCON) ’98, Colorado Springs, USA, Aug. 1998, pp. 273–276.