Hogyeom Kim > Researchers | 서울대학교 전자파 융합 연구실

International Journals

H. Kim, J. Lee, S. Bang, J. Wang, M. Kim, H. Kim, and J. Oh, “Low Voltage Controlled Fast Switchable Liquid Crystal-Based Reflectarray With Transverse Rubbing Layer,” in IEEE Antennas and Wireless Propagation Letters, 2024.
H. Kim, J. Lee, J. Wang, M. Kim, H. Kim, and J. Oh, “Waveguide-Thru Closed-Form Characterization of Anisotropic Polymer Network Liquid-Crystal for mmWave Reconfigurable RF Devices,” in IEEE Transactions on Antennas and Propagation, 2024. (Top Accessed)
S. Bang, T. Yoon, B. Kim, J. Oh, H. Kim, and J. Oh, “Extremely Miniaturized Free-Space Measurement System for RF Metamaterial Composites Based on Beam Focusing Transmitarray,” in IEEE Antennas and Wireless Propagation Letters, 2024.
H. Yang, H. Kim, S. Bang, Y.Kim and J. Oh, "Beyond Limitations of 5G with RIS: Field Trial in a Commercial Network, Recent Advances, and Future Directions," in Communications Magazine, Early Access, Dec. 2023.
H. Kim, S. Oh, S. Bang, H. Yang, B. Kim and J. Oh, "Independently Polarization Manipulable Liquid-Crystal-Based Reflective Metasurface for 5G Reflectarray and Reconfigurable Intelligent Surface," in IEEE Transactions on Antennas and Propagation, 2023 (Top Accessed)
H. Kim, J. Kim and J. Oh, "A Novel Systematic Design of High-Aperture-Efficiency 2D Beam-Scanning Liquid-Crystal Embedded Reflectarray Antenna For 6G FR3 And Radar Applications," in IEEE Transactions on Antennas and Propagation, 2022 (Top Accessed)
D. Seo, H. Kim, S. Oh, J. Kim and J. Oh, "Ultrathin High-Gain D-Band Transmitarray Based on a Spatial Filter Topology Utilizing Bonding Layer Effect," in IEEE Antennas and Wireless Propagation Letters, vol. 21, no. 10, pp. 1945-1949, Oct. 2022
J. Lee, H. Kim and J. Oh, "Large-Aperture Metamaterial Lens Antenna for Multi-Layer MIMO Transmission for 6G," in IEEE Access, vol. 10, pp. 20486-20495, 2022
H. Kim, J. Kim and J. Oh, "Liquid-Crystal-Based X-Band Reactively Loaded Reflectarray Unit Cell to Reduce Reflection Loss," in IEEE Antennas and Wireless Propagation Letters, vol. 20, no. 10, pp. 1898-1902, Oct. 2021
Y. Kim, H. Kim, I. Yoon and J. Oh, " 4×8 Patch Array-Fed FR4-Based Transmit Array Antennas for Affordable and Reliable 5G Beam Steering," in IEEE Access, vol. 7, pp. 88881-88893, 2019

International Conferences

H. Kim and Jungsuek Oh, 2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting (APS-URSI), Jul. 2020.
H. Kim and Jungsuek Oh, 2022 IEEE International Symposium on Antennas and Propagation & USNC-URSI Radio Science Meeting (APS-URSI), Jul. 2022.
H. Kim and Jungsuek Oh, 2023 European Conference on Antennas and Propagation (EUCAP), Mar. 2023.
H. Kim and Jungsuek Oh, 2023 IEEE International Symposium on Antennas and Propagation & USNC-URSI Radio Science Meeting (APS-URSI), Jul. 2023.
D.kwon, S.Kim, K. Park, S.Kim, H. Kim, H. Yang, S.Bang, and Jungsuek Oh, 2023 IEEE International Symposium on Antennas and Propagation & USNC-URSI Radio Science Meeting (APS-URSI), Jul. 2023.
H. Yang, H.Kim, S.Bang, Y.Kim, and Jungsuek Oh, "Indoor Coverage Enhancement Employing Liquid Crystal-Based Massive Reconfigurable Intelligent Surface Linked to 5G FR2 Base Station", 18th European Conference on Antennas and Propagation (EuCAP), 2024
B. Moon, S. Bang, H. Kim, and J. Oh, "Simultaneously Dual-Polarization Convertible Sub-THz Reconfigurable Intelligent Surface Enabled by Through-Quartz VIAs", 18th European Conference on Antennas and Propagation (EuCAP), Glasgow, Scotland, 2024.

Domestic Conferences

H. Kim, Jungsuek Oh,” Sinusoidal Modulation을 통해 Scan Loss를 최소화 한 FR4 기반 5G Transmit Array Antenna”, 2019년도 한국전자파학회 하계종합학술대회, Aug. 2019.
H. Kim, Jungsuek Oh, ” 빔 조향 손실이 개선된 밀리미터파 이중 편파 트랜스밋어레이 안테나”, 2020년도 한국전자파학회 하계종합학술대회, Aug. 2020.
H. Kim and Jungsuek Oh, “X대역 낮은 반사 손실의 액정 기반 반사 배열 단위 셀”, 2021년도 한국전자파학회 동계종합학술대회, Feb. 2021.
H Kim and Jungsuek Oh, “X대역 액정 기반 가변형 반사 배열 메타표면 “, 2021년도 한국전자파학회 하계종합학술대회, Aug. 2021.”,
H. Kim and Jungsuek Oh, “A Novel Design of Dual Linearly-Polarized Liquid-Crystal-Embedded Reconfigurable Reflectar” 2022년도 한국전자파학회 동계종합학술대회, Feb. 2022.
H. Kim and Jungsuek Oh, “Reconfigurable Intelligent Surface Enabling Multi Propagation Modes for Reliable B5G/6G Link Connectivity, “ 2022년도 한국전자파학회 하계종합학술대회, Aug. 2022. (Excellent Paper Award)
양현준, 방승우, 김호겸, 오정석, “세계 최초 RIS 기반 5G FR2 대역 QoS 측정을 위한 전파 모델링 예측 및 필드 테스트,” 2023 Summer KIEES, Aug. 2023.
김호겸, 이재원, 방승우, 왕쥔카이, 김학린, 오정석, “Active Holographic Reflectarray Antenna With Accelerated Dynamic Switching Time: Beyond Theoretical Limitation,” 2023 Summer KIEES, Aug. 2023.
김성현, 권도일, 김병관, 박규진, 양현준, 방승우, 김호겸, 오정석, “RIS를 활용한 5G 무선망 커버리지 확대 기술,” 2023 Summer KIEES, Aug. 2023.
Seungwoo Bang, Hogyeom Kim, and Jungsuek Oh, “A Liquid-Crystal-Embedded Transmitarray Design Based on Antenna-Filter-Antenna Arrays for Wide Phase Tuning Range,” 2023 Winter KIEES, Feb. 2023.
방승우, 문병주, 김호겸, 오정석, “A Novel Transmissive Metasurface Design for Expanding Phase Tuning Range: Extending Transmission Paths via Polarization Converter,” 2024 Winter KIEES, Feb. 2024.
김호겸, 오정석, 2024 Summer KIEES, Aug. 2024.(IEEE AP-S Seoul Chapter Chair상)

Patents

오정석, 신의호, 김호겸,“액정 기반 리플렉트 어레이 안테나”, KR102467623B1, Nov. 17, 2022.
Jongwan Yook, Jungsuek Oh, Hogyeom Kim, and Taehyung Kim, “Liquid crystal-based reflective metasurface, and reflective array antenna and antenna device comprising the same”, Korea Patent #1023741530000, Mar. 11, 2022.
오정석, 김호겸, "이중편파에 대해 삽입손실을 최소화하는 안테나용 트랜스밋 어레이", KR20210044728A
Jaehyun Lee, Kwonjong LEE, Hyojin Lee, Jungsuek Oh, and Hogyeom Kim, “Method and apparatus for transmitting or receiving signals in wireless communication system”, U. S. Patent (Grant US11070269B2), 2021.
Jungsuek Oh and Hogyeom Kim,” Dual-polarized transmit array for antennas to minimize insertion loss”, Korea Patent (Application) #10-2020-0133445, Oct. 15, 2020.
Jaehyun Lee, Kwonjong Lee, Hyojin Lee, Jungsuek Oh, and Hogyeom Kim, “Method and apparatus for transmitting and receiving signal in a wireless communication system”, Korea Patent (Application) #1020200086441, Jul. 13, 2020.