International Conference Papers/Presentations/Workshops (selected) 

• D. Kim, Y. J. Song, H. Moon and S. K. Hong, "Antenna Design with High FBR and Wide Beamwidth for L-band Applications,"  International Symposium on Antennas and Propagation, Incheon, South Korea, Nov. 2024.

• Y. J. Song, D. Kim, H. Moon and S. K. Hong, "X-band Isolation Structure Design for Reducing Coupling Between Antennas,"  International Symposium on Antennas and Propagation, Incheon, South Korea, Nov. 2024.

• S. Oh and S. K. Hong, "Analysis of Nonlinear Radar Cross Section with Nonlinear Radar Equation," International Symposium on Antennas and Propagation, Incheon, South Korea, Nov. 2024.

• S. K. Hong, "Radiative WPT in a Complex Environment and Millimeter-wave WPT," at Workshop on Enabling Long Life of Zero-power IoT Devices Through WPT (WMK-7), IEEE International Microwave Symposium (IMS),  Washington, DC, Jun. 2024.  (Invited)

• S. Y. Oh, D. Kim, W. R. Lee, H. Y. Hong, H.S. Park and S. K. Hong, "Design of a Ka-band High-Gain Waveguide Rotman Lens Beamformer for Far-field Wireless Power Transfer," 17th European Conference on Antennas & Propagation (EuCAP), Florence, Italy, Mar. 2023.

• H. S. Park, W. S. Lee, J. S. Choi and S. K. Hong, "Random Coupling Model for Wave-Chaotic Cavity with Aperture Excitation," Global Electromagnetics (GlobalEM 2022), Abu Dhabi, UAE, Nov. 2022. (Best Student Paper Award)

• H. S. Park and S. K. Hong, "Generation of Plane Waves in the Nearfield Region in a Restricted Environment," International Symposium on Antennas and Propagation (ISAP), Sydney, Australia, Oct. 2022.  

• S. K. Hong, "Millimeter Waves for Wireless Power Transfer: System and Recent Advancements," Global Symposium on Millimeter-Wave & Terahertz (GSMM), Seoul, Korea, May 2022. (Invited)

• H. Y. Hong and S. K. Hong, "Millimeter-wave retrodirective beamformer based on waveguide Rotman lens," Global Symposium on Millimeter-Wave & Terahertz (GSMM), Seoul, Korea, May 2022. https://doi.org/10.1109/GSMM53818.2022.9792359 

• H. S. Park and S. K. Hong, " A performance metric for mode decision of linear array-based WPT system via beamforming and time-reversal," IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, Singapore, Dec. 2021.

• E. Dong, C. Weaver, C. Feng, J. Back, Z. Fang, M. Lee, E. Wheeler, S. K. Hong, "Location and identification of linear and nonlinear targets in 3D using PI-DORT and time of flight," IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, Singapore, Dec. 2021. https://doi.org/10.1109/APS/URSI47566.2021.9704403 

• H. Y, Hong, H. S. Park, K. Lee, S. K. Hong, " Rotman lens-based high gain retrodirective beamformer for wireless power transfer at Ka-bnad," IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, Singapore, Dec. 2021. https://doi.org/10.1109/APS/URSI47566.2021.9704672 

• H. S. Park and S. K. Hong, "Performance evaluation of a broadband RF-to-DC rectifier on short pulses," IEEE MTT Wireless Power Transfer Conference, Seoul, Korea, Nov. 2020.  https://doi.org/10.1109/WPTC48563.2020.9295584

• H. Y. Hong, H. S. Park and S. K .Hong , "Design of Rotman lens for far-field wireless power transfer at Ka-band," IEEE MTT Wireless Power Transfer Conference, Seoul, Korea, Nov. 2020.  https://doi.org/10.1109/WPTC48563.2020.9295528

• K. Lee, W. Lee, S. Jo, H. S. Park, J. Yang, C. Park, H. Lee and S. K. Hong, "Design of a metasurface superstrate for improved reception of wireless power at Ka-band," IEEE MTT Wireless Power Transfer Conference, Seoul, Korea, Nov. 2020.  https://doi.org/10.1109/WPTC48563.2020.9295624

• H.S. Park and S. K. Hong, "Investigation of Time-Reversal Far-field Wireless Power Transfer from Antenna Array in a Complex Propagation Environment", IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, Montreal, Canada, July, 2020. (link)

• M. Lee, Z. Cao, V. Maheshwari, J. Wu, E. Wheeler and S. K. Hong, "'Detection and Location of Linear and Nonlinear Targets using PI-DORT and Time-of-Flight ", IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, Montreal, Canada, July, 2020.  https://doi.org/10.23919/USNC/URSI49741.2020.9321678 

• W. Lee, S. Jo, K. Lee, H. S. Park, J. Yang, C. Park, S. K. Hong and H. Lee, “Polarization independent flat metasurface lens for millimeter-wave beam focusing,” SPIE Photonics West, San Francisco, CA, Feb. 2020.

• H. S. Park and S. K. Hong, "Encryptrion device for enhanced physical security of wireless wave transmission," 8th Asia-Pacific Conference on Antennas and Propagation (APCAP 2019), Incheon, South Korea, Aug. 2019.

• K. H. Lee and S. K. Hong, "Dual-polarized rectifying metasurface for 2.45 GHz band," 8th Asia-Pacific Conference on Antennas and Propagation (APCAP 2019), Incheon, South Korea, Aug. 2019.

• H. S. Park and S. K. Hong, "Encryption device leveraging wave chaos for enhanced physical security of wireless wave transmission," Progress In Electromagnetics Research Symposium (PIERS), Rome, Italy, Jun. 2019.  

• R. Chandra, M. Howlett, I. Sheffert, J. M. Van Treeck, H. S. Park, E. Wheeler and S. K. Hong, "Detection of multiple nonlinear targets using the PI-DORT method," Progress In Electromagnetics Research Symposium (PIERS), Rome, Italy, Jun. 2019.  

• H. S. Park and S. K. Hong, "Broadband RF to DC rectifier for time reversal based wireless power transfer," International Symposium on Antennas and Propagation (ISAP), Busan, South Korea, October 2018.  link

• D. Vuong, J. Lee, S. K. Hong, W.-Y. Shin, and M. Yoo, "Interpixel interference mitigation using differential coding in vehicular visible light communication based image sensor," in Proceedings of the International Conference on Information Networking (ICOIN), Chiang Mai, Thailand, January 2018, pp. 846-847. https://doi.org/10.1109/ICOIN.2018.8343241 

•  J. Blauert, J. M. Faia, Y He, S. K. Hong, B. S. Cook, E. Wheeler, "Improving the radiation characteristics of a Vivandi Antenna using a sptially variant lens," USNC-URSI National Radio Science Meeting, Boulder, CO, USA, Jan. 2018. 

•  J. M. Faia, K. W. McClintick, S. K. Hong, "Applications of DORT and Pulse Inversion to Detection and Selective Electromagnetic Focusing on Nonlinear Elements," in Proceedings of 32nd URSI General Assembly and Scientific Symposium, Montreal, Canada, Aug. 2017.  https://doi.org/10.23919/URSIGASS.2017.8105148 

• S. Hong, E. Lathrop, V. Mendez and W. Wall, “Generation of Short Microwave Pulses with a Compact Reverberation Cavity using Time-Reversal,” IEEE International Symposium on Antenna and Propagation and North American Radio Science Meeting, Vancouver, BC, Canada, July 2015. 

• S. Hong and Jerry Kim, “Parametric Study of Single-Antenna UWB Beamforning by Time-Reversal,” IEEE International Symposium on Antenna and Propagation and North American Radio Science Meeting, Vancouver, BC, Canada, July 2015. 

• V. Mendez, E. Lathrop, S. Hong and J. Kim, “Peak Power Enhancement in Time-Reversal Based Short Pulse Beamforming,” IEEE International Symposium on Antenna and Propagation and North American Radio Science Meeting, Vancouver, BC, Canada, July 2015. 

• S. Hong, V. Mendez, W. Wall, T. D. Andreadis, T. Koch and S. Anlage, "Nonlinear Time Reversal in a Semi-Reverberant Complex Enclosure," 1st URSI Atlantic Radio Science Conference, Canary Islands, May 2015. (Invited)

• S. Hong, V. Mendez, W. Wall, T. D. Andreadis, T. Koch and S. Anlage, "Nonlinear Time Reversal in a Semi-Reverberant Complex Enclosure," 2014 AMEREM Conference, Albuquerque, NM, July 2014.

• S. K. Hong, V. M. Mendez, W. S. Wall and R. Liao, "Single Feed Beam-Steering of Short Pulses via Time Reversal," IEEE International Symposium on Antenna and Propagation and USNC-URSI National Radio Science Meeting, Memphis, TN, July 2014.

• S. M. Rudolph, W. S. Wall, S. K. Hong, K. L. Morgan, "Broadband Switching Nonlinear Metamaterial," IEEE International Symposium on Antenna and Propagation and USNC-URSI National Radio Science Meeting, Memphis, TN, July 2014.

• S. K. Hong and W. A. Davis, "Use of Tumor-specific Resonance in Microwave Hyperthermia of Breast Tumor," IEEE International Symposium on Antenna and Propagation and USNC-URSI National Radio Science Meeting, Chicago, IL, July 2012.

• S. K. Hong, J. Gil Gil, H.V. Tran, Z. B. Drikas, and T.D. Andreadis, “Spatial and Temporal Focusing of an Arbitrary RF Pulse Using the Time Reversal Technique,” Thirteenth Annual Directed Energy Symposium, Bethesda, MD, Nov. 2010.