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2020

J. Park and W. Hong (2020, March), “Metal Stamped Antenna-in-Package for Millimeter-wave Large-scale Phased-array Applications Using Multiphysics Analysis,” 2020 IEEE EuCAP, Copenhagen, Denmark (Winner of Best Student Paper Award) 

2019

J.-Y. Lee, D. Choi, Y. Youn, and W. Hong, “Compact Yagi-Uda-Shaped and Array Antenna in Ka-Band Using Compressed EBG Unit Cells,” 2019 ISMP-EMAP, Pusan, Korea.


J.-Y. Lee, D. Choi, K. Kong, J. Yun, Y. Youn, W. Kwon, and W. Hong, “Design and Measurement Considerations of Feeding Network Including Power Divider for Multi-Port Antenna Arrays,” 2019 IEEE CAMA (Special Session), Bali, Indonesia


J. Choi, W. Hong, and W. Hwang, "Mutual Coupling Suppression MIMO Configuration for Mechanically Integrated 5G Smartphones," Proceedings of the Seventh Asia International Symposium on Mechatronics, Hangzhou, China 


Y. Youn, D. Choi, W. Hong, “Finger Blockage Mitigation Method for mmWave Beamforming Mobile Devices”, IEEE Antennas and Propagation Society International Symposium (APS/URSI 2019), Atlanta, GA, USA  


Y. Youn, W. Hong, “A Dual-polarized FSS on a Single Substrate using Highly-coupled Interlayer Inductance”, IEEE Antennas and Propagation Society International Symposium (APS/URSI 2019), Atlanta, GA, USA 


J. Park and W. Hong, (2019, July). "Antenna-on-Display (AoD) for Millimeter-wave 5G Cellular Devices.", IEEE Antennas and Propagation Society International Symposium (APS/URSI 2019), Atlanta, GA, USA 


M. Choo, J. Park and W. Hong, (2019, July). "A Concept of Reconfigurable Block Cell Antenna for Universal Millimeter-wave 5G Applications.", IEEE Antennas and Propagation Society International Symposium (APS/URSI 2019), Atlanta, GA, USA 


ㆍJ. Choi, J. Park, Y. Youn, W. Hwang, W. Hong, "Frequency-Reconfigurable mmWave Antenna Loaded with Capacitive Structure Integrated within a Microstrip Line", IEEE Antennas and Propagation Society International Symposium (APS/URSI 2019), Atlanta, GA, USA 


ㆍJ. Choi, J. Park, W. Hwang, W. Hong, "mmWave Double Cavity-Backed Slot Antenna featuring Electrically Small and Low-Profile", IEEE Antennas and Propagation Society International Symposium (APS/URSI 2019), Atlanta, GA, USA 


ㆍW. Kwon, Y. Kim, and W. Hong, ”Controlling End-fire/Broadside Radiation Using Parallel Patch Antennas for Wireless Head Mounted Display,” The 6th IEEE MTT-S International Wireless Symposium (IWS 2019), Guangzhou, China. 


S. Jung, M. Choo, J.-Y. Lee, I. Ahn, K. Lee, and W. Hong, "Free-Space Permittivity Measurement for Inhomogeneous PSV-Coated Si-wafer at Frequencies from 75 GHz to 325 GHz", The 6th IEEE MTT-S International Wireless Symposium (IWS 2019), Guangzhou, China. 


J.-Y. Lee, S. Jung, Y. Youn, J. Park, W. Kwon, and W. Hong,"Optically transparent 1-D EBG antenna using sub-skin depth thin-film alloy in the Ka-band," 13th European Conference on Antennas and Propagation (EuCAP 2019-Convened Session), Krakow, Poland. 


J.-Y. Lee, J. Choi, J. Park, W. Kwon, and Hong, W, "Compact MIMO Antenna Concept Realizing Entire 4G LTE and 5G Spectrum for Full-Display Metallic Handsets," International Workshop on Antenna Technology (iWAT-2019), Miami, FL, USA. (Invited Paper)

2018

Ho-Jin Song, “Terahertz Package Technologies for Practical Applications”, PIERS2018, Toyama, Japan (invited talk)


Ho-Jin Song, “Preliminary study on terahertz channel response for wireless communications”, Asian-Pacific Microwave Conference 2018, Kyoto, Japan, Nov. 2018 (invited talk)


Ho-Jin Song, “Radio wave propagation response at THz frequencies”, International Symposium. on Wireless Personal Multimedia Communications 2018, Chian-Rai, Tailand, Nov. 2018 (invited talk)


J. Park, S. Lee, and W. Hong, (2018, October). "Wideband 39 GHz Vertically-Polarized Endfire Antenna-in-Package (AiP) Array featuring Near-Planar Profile", IEEE International Symposium on Antennas and Propagation (ISAP 2018), Busan, Korea. (1st Prize Best Student Paper Award)


M. Choo, and J. Park, and W. Hong, (2018, October). "28 GHz Pattern Reconfigurable Block Cell Antenna Featuring Electrically Small Profile", IEEE International Symposium on Antennas and Propagation (ISAP 2018), Busan, Korea.


J. Park, S. Lee, Y. Kim, J. Lee, and W. Hong, (2018, August). "Hybrid Antenna Module Concept for 28 GHz 5G Beamsteering Cellular Devices", IEEE MTT-S International Microwave Workshop Series on 5G (IMWS-5G 2018), Dublin, Ireland. (Invited paper) (Best Student Paper Finalist) 


J. Park, D. Choi, and W. Hong, (2018, July). "37-39 GHz Vertically-Polarized End-fire 5G Antenna Array featuring Electrically Small Profile", 2018 IEEE Antennas and Propagation Society International Symposium (APS/URSI 2018), Boston, MA.

Y. Youn, and W. Hong, (2018, July). "Planar Dual-Band Linear to Circular Polarization Converter using Radial-shape MultiLayer FSS", IEEE Antennas and Propagation Society International Symposium (APS/URSI 2018), Boston, MA.

 

S. Lee, D. Choi, Y. Youn, and W. Hong, (2018, June). "Electrical characterization of highly efficient, optically transparent nanometers-thick unit cells for antenna-on-display applications", IEEE MTT-S International Microwave Symposium (IMS 2018), Philadelphia, PA.


Kangseop Lee, Hiroshi Hamada, Hideaki Matsuzaki, Hideyuki Nosaka, and Ho-Jin Song, "220 - 265 GHz Active ×6 Frequency Multiplier MMIC with InP HEMT Technology," 2018 IEEE MTT-S International Microwave Symposium (IMS), Philadelphia, PA, 2018. 


J. Park, D. Choi and W. Hong, “28 GHz 5G Dual-Polarized End-fire Antenna with Electrically-Small Profile,” 2018 12th European Conference on Antennas and Propagation (EuCAP 2018), London, UK.


ㆍW. Hong, (2018, April). "AiP Design for 5G Millimeter-wave Cellular Devices” 2018 12th European Conference on Antennas and Propagation (EuCAP 2018), London, UK. (Invited Workshop)


ㆍW. Hong, (2018, March). "Radiation Resistance Enhancement Techniques for Metallic Smartwatch Antennas and Coils", 2018 International Workshop on Antenna Technology (iWAT 2018), Nanjing, China. (Invited Paper)

2017

ㆍY. Youn and W. Hong, (2017, Dec.). "Phase Compensation Using Inhomogeneous Reflect Array for 5G Indoor Channel Model", Korea-Japan Microwave Workshop (KJMW 2017), Tokyo, Japan.


Y. Kim and W. Hong, (2017, October), "Coexistance Issues concerning 4G and mmWave5G Antennas for Mobile Terminals", Asia Pacific Conference on Antennas and Propagation (APCAP 2017), Xian, China. (Invited) 


W. Hong, S. Lim, S. Ko, & Y. Kim, (2017, July). "OLED-embedded Antennas for 2.4 GHz Wi-Fi and Bluetooth Applications." Antennas and Propagation Society International Symposium (APS-URSI 2017).


ㆍJ. Park, D. Choi, W. Hong, (June, 2017). "Optimization of Vertical Transition Utilizing Patterned Grooves on Ground Plane for Frequencies up to 50 GHz". In the 16th International Symposium on Microwave and Optical Technology (ISMOT 2017).(Best Paper Award)


ㆍS.Y. Lee, D. Choi, W. Hong, (June, 2017). "28 GHz Via-Less Patch Antenna featuring Partially Metallized Side Walls". In the 16th International Symposium on Microwave and Optical Technology (ISMOT 2017).


ㆍS.Y. Lee, D. Choi, W. Hong, (June, 2017). "Analysis of Transparent Coplanar Waveguide with few microns – grid width". In 2017 Asia-Pacific International Symposium on EMC (APEMC).


ㆍW. Hong, S. Ko, Y. Kim, & S. Lim, (2017, March). "Invisible antennas using mesoscale conductive polymer wires embedded within OLED displays", 10th European Conference on Antennas and Propagation (EuCAP 2017).


ㆍW. Hong, (2017, January). "Quantitative analysis of the effects of polarization and pattern reconfiguration for mmWave 5G mobile antenna prototypes", Radio and Wireless Symposium (RWW 2017) (Invited Paper)




2015

ㆍH. Hamada, T. Kosugi, H.-J. Song, M. Yaita, A. E. Moutaouakil, H. Matsuzaki, and A. Hirata, “300-GHz band 20-Gbps ASK Transmitter Module Based on InP-HEMT MMICs”, IEEE Coumpount Semiconductor IC Symposium (CSICS), New Orleans, USA, Oct. 2015


ㆍT. Tajima, H.-J. Song,  T. Kosugi, H. Hamada, A. E. Moutaouakil, H. Matsuzaki, M. Yaita “Terahertz MMICs and Antenna-in-package Technology at 300 GHz for KIOSK Download System”, Int. Symp. Frontier in THz Technology, Hamamatsu, Japan, Aug. 2015. (invited)


ㆍH.-J. Song, T. Tajima, T. Kosugi, H. Hamada, A. E. Moutaouakil, H. Sugiyama, H. Matsuzaki, M. Yaita, S. Kodama, and O. Kagami, “Demonstration of KIOSK Data Downloading System at 300 GHz Based on InP MMICs”, IEEE Int. Symp. Radio Frequency Integration Technology (RFIT), Sendai, Japan, August 2015. (invited)


ㆍD. Kitayama, H.-J. Song,  M. Yaita, A. Hirata, “Experimental Demonstration of Metamaterial Flat Lens at F-band”, in Proc. International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), Hong-Kong, August 2015


ㆍT. Tajima, J.-Y. Kim, M. Nakamura, H.-J. Song,  K. Ajito, and A. Hirata, “Stable CW THz Spectroscopy with PLC-LN Hybrid Phase Modulator”, in Proc. International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), Hong-Kong, August 2015


ㆍHong, W., Baek, K. H., & Kim, Y. G. (2015, July). 60 GHz Antenna Module featuring Spherical Coverage for Nomadic and Mobile Gbps Applications. In Radio Science Meeting (Joint with AP-S Symposium), 2015 USNC-URSI. IEEE.


ㆍHong, W., Baek, K. H., & Ko, S. T., (2015, July). Design and Empirical Investigation of Miniaturized mmWave Antenna Array Modules within Cellular Devices. In Radio Science Meeting (Joint with AP-S Symposium), 2015 USNC-URSI. IEEE.


ㆍOh, J., Ko, S. T., & Hong, W., (2015, July). 28GHz Low-Profile Beam-Steerable Planar Lens Antenna. In Radio Science Meeting (Joint with AP-S Symposium), 2015 USNC-URSI. IEEE.


ㆍChang, S., Hong, W., & Oh, J., (2015, July). Quantization Effects of Phase Shifters on 5G mmWave Antenna Arrays. In Radio Science Meeting (Joint with AP-S Symposium), 2015 USNC-URSI. IEEE.


ㆍH.-J. Song,, J.-Y. Kim, H. Nishi, H. Fukuda, and K. Ajito, “Stable and High Dynamic Range CW Terahertz Spectroscopy System”, Progress in Electromagnetics Research Symposium (PIERS), Prague, Czech Republic, July 2015 (invited)


ㆍHong, W., Ko, S. T., Lee, Y., & Baek, K. H. (2015, April). Compact 28 GHz antenna array with full polarization flexibility under yawi, pitch, roll motions. In Antennas and Propagation (EuCAP), 2015 9th European Conference on (pp. 1-3). IEEE. (Invited Paper)


ㆍKim, B., Kim, H., Choi, D., Lee, Y., Hong, W., & Park, J. (2015, April). 28 GHz propagation analysis for passive repeaters in NLOS channel environment. In Antennas and Propagation (EuCAP), 2015 9th European Conference on (pp. 1-4). IEEE.

2014

ㆍToshihiko Kosugi, Hiroshi Hamada, Hiroyuki Takahashi, H.-J. Song,  Akihiko Hirata, Hideaki Matsuzaki, Hideyuki Nosaka, “250–300 GHz waveguide module with ridge-coupler and InP-HEMT IC”, in Proc. Asia-Pacific Microwave Conference (APMC), pp. 1133-1135, Sendai, Japan, Nov. 2014 (invited)


ㆍD. Kitayama, H.-J. Song,  M. Yaita, “Investigation of plasmon hybridization in split-ring resonators”, in Proc. Asia-Pacific Microwave Conference (APMC), pp. 822-824, Sendai, Japan, Nov. 2014


ㆍH.-J. Song,, M. Yaita, “Demonstration of on-wafer noise figure measurement of 300-GHz amplifier MMIC utilizing microwave photonic noise source”, in Proc. Asia-Pacific Microwave Conference (APMC), pp. 435-437, Sendai, Japan, Nov. 2014


ㆍH.-J. Song,, J.-Y. Kim, H. Nishi, H. Fukuda, K. Ajito, “Terahetz homodyne spectroscopy system based silicon photonic integrated circuit”, in Proc. International Topical Meeting on Microwave Photonics, pp. 370-372, Hokaido, Japan, Oct. 2014


ㆍH.-J. Song,, T. Tajima, M. Yaita, O. Kagami, “Recent Progress in Terahertz Wireless Communications at 300”, in IRMMW-THz 2014, Tucsan, AZ, USA, 14-19 Sept. 2014 (invited)


ㆍH.-J. Song, T. Tajima, M. Yaita, O. Kagami, “Recent Progress on Terahertz Communications at 300 GHz for Practical Short-Range Applications”, in URSI-GAAS, Beijing, China, 22-27 August 2014 (invited)


ㆍHong, W., Kim, Y. G., Baek, K. H., & Lee, Y. (2014, July). Design and testing of a millimeter-wave beam-steering mesh-grid array for 5th generation (5G) mobile communication handset devices. In  Radio Science Meeting (Joint with AP-S Symposium), 2014 USNC-URSI (pp. 282-282). IEEE.


ㆍKim, Y. G., Ko, S., & Hong, W. (2014, July). A planar, via-less zeroth-order antenna for wearable electrocardiography. In Radio Science Meeting (Joint with AP-S Symposium), 2014 USNC-URSI  (pp. 34-34). IEEE.


ㆍLee, Y., Goudelev, A., Kim, B., & Hong, W. (2014, July). Metal chassis robust antenna on compact AMC structure for commercial slim TV. In Antennas and Propagation Society International Symposium (APSURSI), 2014 IEEE (pp. 396-397). IEEE.


ㆍKim, H., Kim, B., Hong, W., & Lee, Y. (2014, July). A metal chassis robust antenna located on the circumferential barrel of a camera. In Antennas and Propagation Society International Symposium (APSURSI), 2014 IEEE (pp. 398-399). IEEE.


ㆍOh, J., Hutcheson, G. Z., Hong, W., & Lee, Y. J. (2014, July). Planar lens using mixed-order spatial elliptic filter. In Antennas and Propagation Society International Symposium (APSURSI), 2014 IEEE (pp. 735-736). IEEE.


ㆍOh, J., Hutcheson, G. Z., Aryanfar, F., Hong, W., & Lee, Y. J. (2014, July). Planar beam steerable lens antenna system using non-uniform feed method. In Antennas and Propagation Society International Symposium (APSURSI), 2014 IEEE (pp. 651-652). IEEE.


ㆍT. Tajima, H.-J. Song, M. Yaita, “300-GHz Microstrip-to-Waveguide Transition Integrated in LTCC”, in International Microwave Symposium, Tampa, FL, USA, 2-5 June 2014.


ㆍHong, W., Baek, K., Lee, Y., & Kim, Y. G. (2014, June). Design and analysis of a low-profile 28 GHz beam steering antenna solution for Future 5G cellular applications. In Microwave Symposium (IMS), 2014 IEEE MTT-S International (pp. 1-4). IEEE. (Invited Paper)


ㆍH.-J. Song, M. Yaita, “Microwave Photonics Noise Source for On-Wafer Y-factor Measurement at 300 GHz”, in 7th Global Symposium on Millimeter-Waves (GSMM), Seoul, Korea, 21- 23 May 2014


ㆍT. Tajima, H.-J. Song, . Yaita, “300-GHz Corrugated Horn Antennas on LTCC Multi-layered Substrates”, in European Conference on Antennas and Propagation (EuCAP2014), CA12-1-1, Netherlands, 6-11 April 2014 (invited)


ㆍHong, W., Baek, K., Kim, Y. G., Lee, Y., & Kim, B. (2014, April). mmWave phased-array with hemispheric coverage for 5th generation cellular handsets. In Antennas and Propagation (EuCAP), 2014 8th European Conference on (pp. 714-716). IEEE. (Invited Paper)

2013

ㆍKhripkov, A., Hong, W., & Pavlov, K. (2013, December). Design of an integrated resonant structure for wireless power transfer and data telemetry. In Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO), 2013 IEEE MTT-S International  (pp. 1-3). IEEE. (Invited Paper)


ㆍH.-J. Song, T. Tajima, K. Ajito, M. Yaita, N. Kukutsu, “Direct Quadrature Modulator MMIC for Future Terahertz Communications at 300 GHz”, Proc. In European Microwave Integrated Circuits Conference, pp. 208 - 211, Nuremberg, Germany, 2013


ㆍT. Tajima, H.-J. Song,  K. Ajito, M. Yaita, N. Kukutsu, “300-GHz LTCC Horn Antennas Based on Antenna-in-Package Technology”, EuMC2013, Nuremberg, Germany


ㆍGhalichechian, N., Doane, J. P., Hong, W., Sertel, K., & Volakis, J. L. (2013, July). Characterization of SU-8 using terahertz time-domain spectroscopy. In Radio Science Meeting (Joint with AP-S Symposium), 2013 USNC-URSI (pp. 18-18). IEEE.

 Baek, K. H., & Hong, W. (2013, July). Highly miniaturized vertical end-fire antenna array for mmWave wireless communication. In Antennas and Propagation Society International Symposium (APSURSI), 2013 IEEE (pp. 992-993). IEEE.

 Chung, J. Y., Hong, W., Baek, K. H., & Lee, Y. J. (2013, July). A low profile zeroth order resonator antenna for 80 GHz chip-to-chip communication. In Radio Science Meeting (Joint with AP-S Symposium), 2013 USNC-URSI (pp. 120-120). IEEE.


ㆍN. Kukutsu, H.-J. Song, J.-Y. Kim, T. Tajima, M. Yaita, K. Ajito, and, O. Kagami, “Toward practical THz-wave applications”, Asia-Pacific Microwave Photonics (APMP2013), Gwangju, Korea, (invited)


ㆍJ.-Y. Kim, H.-J. Song, K. Ajito, M. Yaita, and N. Kukutsu, “Continuous-wave homodyne THz spectroscopy with 1.55um fiber-optic technology and EO phase modulation”, Asia-Pacific Microwave Photonics (APMP2013), Gwangju, Korea


ㆍH.-J. Song, J.-Y. Kim, K. Ajito, M. Yaita, and N. Kukutsu, “Terahertz Communications at 300 GHz Using UTC-PD Transmitter and MMIC Receiver”, Asia-Pacific Microwave Photonics (APMP2013), Gwangju, Korea


ㆍJ.-Y. Kim, H.-J. Song, K. Ajito, M. Yaita, and N. Kukutsu, “Frequency domain THz spectroscopy and imaging with 1.55-mm fiber-optic technology and coherent detection”, IRMMW-THz 2013, Mainz, Germany

2012

ㆍ J.-Y. Kim, H.-J. Song, K. Ajito, M. Yaita, N. Kukutsu, “InP HBT Voltage Controlled Oscillator for 300-GHz-Band Wireless Communications”, Int. SOC Design Conf. (ISOCC), Jeju, Korea, 2012 (invited)


ㆍK. Ajito, U. Yuko, H.-J. Song, J.-Y. Kim, E. Tamechika, N. Kukutsu, W. Limwikrant, K. Yamamoto, K. Moribe, “Multicomponent chemical mappting of pharmaceutical crystals in a pellet using terahertz spectroscopy” Int. Symp. Fountiers in Terahertz Technology (FTT), Nara, Japan, 2012


ㆍK. Ajito, Y. Ueno, H.-J. Song, E. Tamechika, N. Kukutsu, W. Limwikrant, K. Yamamoto, K. Moribe, “Terahertz Chemical Imaging and Spectroscopy of Molecular Networks in Pharmaceutical and Biomedical Applications” PRiME2012 & ECS 2012, Honolulu, 2012 (invited)


ㆍH.-J. Song, K. Ajito, Y. Muramoto, A. Wakatsuki, T. Nagatsuma, N. Kukutsu, “Uni-Travelling-Carrier Photodiode Module Generating 1-mW Saturated Output Power at 300 GHz”, Asia-Pacific Microwave Photonics (APMP), Kyoto, Japan, Apr. 25-27 2012


ㆍS. Hisatake, G. Kitahara, H.-J. Song, K. Ajito, T. Nagatsuma, “Terahertz Frequency-Domain Spectrometer Based on Photodiode and Low-Temperature-Grown GaAs Photoconductor at 1.55 μm”, Asia-Pacific Microwave Photonics (APMP), Kyoto, Japan, Apr. 25-27 2012


ㆍK. Arakawa, T. Takada, K. Miyake, H.-J. Song, K. Ajito, N. Kukutsu T. Nagatsuma, “Application of High-Power Photodiode-Arrays to 300 GHz-Band Wireless Link”, Asia-Pacific Microwave Photonics (APMP), Kyoto, Japan, Apr. 25-27 2012


ㆍJ.-Y. Kim, H.-J. Song, K. Ajito, M. Yaita, N. Kukutsu, “Continuous-wave coherent homodyne detection with balanced electro-optical phase modulation”, Int. Conf. Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), Australia, Sept. 23-28 2012


ㆍHong, W., Baek, K. H., & Goudelev, A. (2012, July). Integrated board-level phased array antenna solution for 60 GHz radio. In Antennas and Propagation Society International Symposium (APSURSI), 2012 IEEE (pp. 1-2). IEEE.

2011

ㆍK. Ajito, Y. Ueno, H.-J. Song, E. Tamechika, N. Kukutsu, “Analytical Terahertz Chemical Imaging of Molecular Networks in Bio-Medical Applications”, 219th ECS Meeting, Montreal, May 1-6 2011


ㆍS. Hisatake, K. Shimahashi, G. Kitahara, Y. Morimoto, H.-J. Song, K. Ajito, T. Nagatsuma, “Homodyne detection of microwaves using low-temperature-grown GaAs at 1.55 µm”, Topical Meeting on Microwave Photonics (MWP), Singapore, Oct. 18-11 2011


ㆍT. Isogawa, T. Kumashiro, H.-J. Song, K. Ajito, N. Kukutsu, K. Iwatsuki, T. Nagatsuma, “Tomographic imaging using photonically generated low-coherence terahertz sources”, Topical Meeting on Microwave Photonics (MWP), Singapore, Oct. 18-11 2011


ㆍH.-J. Song, K. Ajito, T. Nagatsuma and N. Kukutsu, “Terahertz Wave Applications with Photonic” Int. Symp. Antenna and Propagation (ISAP), Jeju, Korea, Oct. 25-28 2011 (invited)


ㆍH.-J. Song, K. Ajito, N. Shimizu, N. Kukutsu, T. Nagatsuma “Terahertz wave applications using photonic technologies” XXXth URSI General Assembly and Scientific Symposium, pp. 1-4, Aug. 13-20 2011 (invited)


ㆍHong, W., Goudelev, A., Baek, K. H., Arkhipenkov, V., Lee, J., & Jung, J. (2011, July). Monolithic Circular Stacked Antenna array using high-volume LTCC technology for 60 GHz. In Antennas and Propagation (APSURSI), 2011 IEEE International Symposium on (pp. 2032-2034). IEEE.

 Shin, B. G., Park, M. J., Chung, Y. S., Kim, B., Wi, H., Lee, B. & Lee, J. (2011, July). Diversity and MIMO antenna for multi-band mobile handset applications. In Antennas and Propagation (APSURSI), 2011 IEEE International Symposium on (pp. 419-421). IEEE.

2010

ㆍT. Nagatsuma, A. Kaino, S. Hisatake, K. Ajito, H.-J. Song, A. Wakatsuki, Y. Muramoto, N. Kukutsu, and Y. Kado, "Continuous-wave Terahertz Spectroscopy System Based on Photodiodes," PIERS Online, vol. 6, pp. 390-394, 2010.

ㆍT. Nagatsuma, T. Takada, H.-J. Song, A. Ajito, N. Kukutsu, and Y. Kado, “Millimeter- and THz-wave photonics toward 100 Gbps wireless transmission” 23rd Photonics Society Annual Meeting, Denver, CO, USA, Nov. 7-11 2010 (invited)

ㆍH. J. Song, K. Ajito, A. Wakatsuki, Y. Muramoto, N. Kukutsu, Y. Kado, and T. Nagatsuma, "Terahertz wireless communication link at 300 GHz," in Proc. Int. Top. Meeting Microwave Photonics 2010 (MWP2010), pp. 42-45, Montreal, Canada, Oct. 5-9 2010

ㆍK. Ajito, H.-J. Song, A. Hirata, A. Wakatsuki, Y. Muramoto, N. Shigekawa, T. Kumashiro, D. Asa, T. Nagatsuma, N. Kukutsu, and Y. Kado, “Continuous-wave Terahertz Spectroscopic Imaging at over 1 THz for Pharmaceutical Applications”, IRMMW-THz2010, Tu-D1.3, Rome, Italy, Sept. 5-10 2010

ㆍT. Nagatsuma, H.-J. Song, Y. Fuji-moto, T. Takada, M. Kawamura, K. Ajito, N. Kukutsu, Y. Kado, A. Wakatuski, and Y. Muramoto; “300-GHz-band wireless link based on photonic signal generation”, EOS annual meeting 2010, Paris, France, Oct. 26-29 2010 (invited)

ㆍHo-Jin Song, Naofumi Shimizu, Yuichi Kado, Tadao Nagatsuma, “Photonic generation of continuous terahertz waves and its application to sensing and communications”, Proceedings Vol. 7763 (SPIE Optics + Photonics 2010), SanDiego, CA, USA, Aug. 1-5 2010 (invited)

ㆍN. Kukutsu, A. Hirata, M. Yaita, K. Ajito, H. Takahashi, T. Kosugi, H.-J. Song, A. Wakatsuki, Y. Muramoto, and T. Nagatsuma, "Toward practical applications over 100 GHz," IMS2010, pp. 1134-1137, Anaheim, CA, USA, May 2-28 2010


ㆍYuichi Kado, Mitsuru Shinagawa, Ho-Jin Song, and Tadao Nagatsuma, “Close Proximity Wireless Communication Technologies Using Shortwaves, Microwaves, and Sub-Terahertz Waves”, PIERS2010, Beijing, China, 2010.

2009

ㆍTadao Nagatsuma, Ho-Jin Song, Yoshihide Fujimoto, Kazumasa Miyake, Akihiko Hirata, Katsuhiro Ajito, Atsushi Wakatsuki, Tomofumi Furuta, Naoya Kukutsu, and Yuichi Kado, “Giga-bit Wireless Link Using 300-400 GHz Bands”, in Proc. Int. Top. Meeting Microwave Photonics 2009 (MWP2009), Valencia, Spain, Oct. 14-16 2009


ㆍH.-J. Song, K. Ajito, A. Hirata, A. Wakatsuki, T. Furuta, N. Kukutsu, and T. Nagatsuma, “Multi-Gigabit Wireless Data Transmission at over 200-GHz Band”, Tech. Digest 2009 Int. conf. Infrared, millimeter and terahertz wave (IRMMW-THz2009), R3B2, Busan, Korea, Sept. 21-25 2009


ㆍHong, W., & Sarabandi, K. (2009, June). Antenna embedded in metallic structures with high isolation. In Antennas and Propagation Society International Symposium, 2009. APSURSI'09. IEEE (pp. 1-4). IEEE.


ㆍOh, J., Thiel, M., Hong, W., & Sarabandi, K. (2009, June). Indoor wave propagation measurements and modeling for evaluation of coverage enhancement using a repeater system. In 2009 IEEE Antennas and Propagation Society International Symposium (pp. 1-4).


ㆍHyoung-Jun Kim, Woo-Keun Song, Jong-Soo Lee, Jong-In Song and Ho-Jin Song, “Bit-Error-Rate Performace of an All-Optical Frequency Upconverter Based on FWM in an SOA” in Proc. Asia-Pacific Microwave Photonics Conference (APMP2009), China, Apr. 2009


ㆍH.-J. Song, N. Shimizu, T. Nagatsuma, N. Kukutsu, Y. Kado, T. Furuta, and A. Wakatsuki, “Microwave Photonic Sub-Terahertz Wave Generation and Its Application to Gas Spectroscopy”, in Proc. Asia-Pacific Microwave Photonics Conference (APMP2009), China, Apr. 2009 (invited)

2008

ㆍH.-J Song, N. Shimizu, T. Furuta, A. Wakatsuki, and T. Nagatuma, “Photonic Generation of Sub-Terahertz Noises and Its Application to Spectroscopy Measurement”, in Proc. European Microwave Conference, pp. 373-376. Oct. 27-31 2008


ㆍN. Shimizu, H.-J. Song, T. Furuta, R. Fukasawa, K. Suizu, T. Nagatsuma, and Y. Kado “Active Gas Sensing With Sub-Terahertz Waves Reflected from a Wall”, The Joint 33nd International Conference on Infrared & Millimetre Waves and 16th International Conference on Terahertz Electronics, Pasadena, CA, USA, Sept. 15-18 2008


ㆍHyoung-Jun Kim, Ho-Jin Song, Jang-Soo Chun, Woo-Keun Song, Chul-Seung Park, and Jong-In Song, "All-optical frequency up-converter utilizing a four-wave mixing effect in a semiconductor optical amplifier", in Global Symposium on Millimeter Waves (GSMM2008), Nanjing, China, G22C, April 22-24, 2008


ㆍHong, W., & Sarabandi, K. (2008, July). Miniaturized multi-element monopole antenna. In Antennas and Propagation Society International Symposium, 2008. AP-S 2008. IEEE (pp. 1-4). IEEE.

2007

ㆍH.-J. Song, N. Shimizu, T. Furuta, K. Suizu, H. Ito and T. Nagatsuma, “Broadband Frequency Tunable Photonic Sub-Terahertz Wave Generation for Spectroscopic Applications”, IEEE-LEOS annual meeting 2007, FL, USA, ThF-2, pp. 734-735, Oct. 21-25 2007.


ㆍN. Shimizu, H.-J. Song, and T. Nagatsuma, “Terahertz-Wave Source Based on Photonic Millimeter-wave Generation and Its Application for Spectroscopic Measurement”, The Joint 32nd International Conference on Infrared & Millimetre Waves and 15th International Conference on Terahertz Electronics, Cardiff, UK, ThuB2-2, pp. 895-897, Sept. 2-7 2007


ㆍH.-J. Song, N. Shimizu, and T. Nagatsuma, “Microwave Photonic Frequency Multiplication for a Tunable Millimeter and Terahertz CW Signal Generator with Improved Spurious Characteristics”, IEEE/LEOS Summer Topical Meetings, Portland, OR, USA, TuC4-3, pp. 192-193, 23-25 July 2007


ㆍH.-J. Kim, H.-J. Song, and J.-I. Song, "All-optical Frequency Up-conversion Technique using Four-wave Mixing in Semiconductor Optical Amplifiers for Radio-over-fiber Applications," IMS 2007, Tu3D-6, Honolulu, HI, USA, 3-8 June 2007.


ㆍH.-J. Kim, H.-J. Song, K.-H. Oh, and J.-I. Song, "Photonic Frequency Up-Converter Using a Four-Wave Mixing Effect in Semiconductor Optical Amplifiers," AP-MWP 2007, Jeju, Korea, pp. 135-137, Oct. 2007.


ㆍT. Nagatsuma, A. Hirata, N. Shimizu, H.-J. Song, and N. Kukutsu, "Photonic generation of millimeter and terahertz waves and its applications," in International Conference on Applied Electromagnetics and Communications (ICECom 2007), Dubrovnik, Croatia, pp. 1-4, 24-26 Sept. 2007 (invited)


ㆍT. Nagatsuma, A. Hirata, N. Shimizu, H.-J. Song, F. Nakajima, T. Furuta, and H. Ito, “Photonic generation of millimeter waves and its applications”, AP-MWP 2007, Jeju, Korea, 2007. (invited)


ㆍHong, W., & Sarabandi, K. (2007, June). Design of low-profile omnidirectional antenna for ground sensor networks. In Antennas and Propagation Society International Symposium, 2007 IEEE (pp. 6007-6010). IEEE.


ㆍBehdad, N., Shi, D., Hong, W., Sarabandi, K., & Flynn, M. P. (2007, June). A 0.3 mm 2 Miniaturized X-Band On-Chip Slot Antenna in 0.13μm CMOS. In Radio Frequency Integrated Circuits (RFIC) Symposium, 2007 IEEE (pp. 441-444). IEEE.

2006

ㆍHong, W., Behdad, N., & Sarabandi, K. (2006, July). Tri-band reconfigurable antenna for RFID applications. In Antennas and Propagation Society International Symposium 2006, IEEE (pp. 2669-2669). IEEE.


ㆍHong, W., Behdad, N., & Sarabandi, K. (2006, July). Design of Efficient Slot Antenna for On-Chip Wireless Systems. In Antennas and Propagation Society International Symposium 2006, IEEE (pp. 3931-3934). IEEE.


ㆍJ.-I. Song, and H.-J. Song, “Simultaneous frequency conversion technique utilizing an SOA-MZI for full-duplex WDM radio over fiber applications”, Asia-Pacific Microwave Photonics Conference (AP-MWP2006), Kobe, Japan, pp. 347-350, April 2006. (Invited)


ㆍH.-J. Song, T.-W. Kim, S. J. Jo, C.-H. Lim, S.-G. Ihn, and J.-I. Song, “Microwave photonic mixer based on an InGaAs photoconductor for radio over fiber applications”, Asia-Pacific Microwave Photonics Conference (AP-MWP2006), Kobe, Japan, April 2006.


ㆍH.-J. Song, and J.-I. Song, “Experimental demonstration of simultaneous all-optical frequency conversion for full-duplex WDM RoF systems”, OFC/NFOEC, Anaheim, CA, USA, 5-10 Marh 2006

2005

ㆍH.-J. Song, M. Park, H. J. Kim, J. S. Lee, and J.-I. Song, “All-optical frequency down-conversion for full-duplex WDM RoF systems utilizing an SOA-MZI”, in Int. Topical Meeting on Microwave Photonics (MWP2005), F2-3, Seoul, Korea, Oct. 12-14, 2005


ㆍK.-H. Oh, H.-J. Song, S. Moon, T.-Y. Kim, G. Mudhana, D.-Y. Kim and J.-I. Song, “Characterization of near-field patterns of a novel UC-PBG FW-CBCPW by using an electrooptic field mapping technique”, in 35th European Microwave Conference (EuMC2005), Paris, FRN, Oct. 3-7, 2005


ㆍH.-J. Song, J. S. Lee, and J.-I. Song, “Simultaneous all-optical frequency upconversion for WDM radio over fiber applications”, in IEEE MTT-S Int. Microwave Symp. (IMS2005), LongBeach, CA, USA, June 12-17, 2005, paper Tu1A-5


ㆍH.-J. Song, J. S. Lee, and J.-I. Song, “All-optical harmonic frequency up-conversion for a WDM radio over fiber system”, in IEEE MTT-S Int. Microwave Symp. (IMS2004), Fort Wort, TX, USA, June 6-11, 2004, paper TU6D-2, pp. 405-407


ㆍH.-J. Song, J. S. Lee, and J.-I. Song, “Radio over fiber down-link system employing a signal up-conversion based on the XPM effect in SOAs”, in The 5th Japan-Korea Joint Workshop on Microwave Photonics (JKJW-MWP), Otsu, Shiga, Japan, January 29-30, 2004, paper F3-6, pp. 175-178


ㆍH.-J. Song, J. S. Lee, and J.-I. Song, “Linearity performance of a signal up-conversion by using cross-phase-modulation in all-optical SOA-MZI wavelength converter”, in The 16th Annual Meeting of the IEEE Laser & Electro-Optics Society (LEOS2003), Tucson, AZ, USA, October 26-30, 2003, paper ThAA3, pp. 1007-1008.


ㆍI.-H. Kang, J.-W. Lee, S.-J. Kang, S.-J. Jo, S.-K. In, H.-J. Song, J.-H. Kim, and J.-I. Song, "Improved Breakdown Voltage Characteristics of In0.5Ga0.5P/In0.22Ga0.78As/GaAs p-HEMT by the Use of An Oxidized GaAs Gate ," 10회 한국반도체학술대회, pp. 349-350, 2003.


ㆍI.-H. Kang, J.-H. Kim, H.-J. Song, J.-I. Song, "Effect of Selective Hydrogen Pretreatment on Characteristics of AlGaAs/InGaAs p-HEMTs," KCS 2002, paper A-19, pp. 265-266, 2002.


ㆍJ. S. Lee, H.-J. Song, and J.-I. Song, “Performance degradation due to phase noise of laser in DD MMoF system”, in The 4th Japan-Korea Joint Workshop on Microwave Photonics (JKJW-MWP), Deajeon, Korea, January 23-24, 2003, Paper-8, pp. 131-134


ㆍTae-Sik Cho, Jeongseon Lee, Ho-Jin Song, Jaehwan Ahn, G. Hugh Song, Jong-In Song, and Kiseon Kim, “BER performance degradation of MMoF system due to impairments in optical SSB link”, in The 3th Japan-Korea Joint Workshop on Microwave Photonics (JKJW-MWP), Tokyo, Japan, January 24-25, 2002, Paper #3-3, pp. 111-114


ㆍJ.-W. Lee, I.-H. Kang, S.-J. Kang, S.-J. Jo, S.-K. In, H.-J. Song, J.-H. Kim, and J.-I. Song , "In0.5Ga0.5P/In0.22Ga0.78As/GaAs pseudomorphic high electron mobility transistor with gate oxide layer for improving on-state and off-state breakdown voltages ," 2001 International Semiconductor Device Research Symposium, pp. 634-637, Washington, DC, USA, 5-7 Dec. 2001.


ㆍS-J Kang, J-C Han, J. H. Kim, S-J Jo, H.-J. Song, S-W Park, and J-I Song, "A Depletion-mode InP MOSFET with a Liquid Phase Oxidized InGaAs Gate," International Symposium on Compound Semiconductors 2001, pp. 54, 2001.