The 15th International Conference on Electronics, Communications and Networks (CECNet 2025)

Abstract: This study proposes a 6×26 slotted waveguide array antenna high-gain design for Ku-band wave monitoring radar applications. In the first section, the structure of the 6×26 slotted waveguide array antenna was optimized, and the measured VSWR and peak gain results showed good agreement with the simulation. In the second section, a grid cavity was integrated above the slotted array to enhance the antenna gain. The grid cavity contributes to achieving uniform current distribution, suppressing first sidelobes, and improving gain. Despite the addition of the grid cavity, the VSWR characteristics remained stable, and a gain improvement of approximately 1.2 dB was achieved. In the final section, a dielectric lens was added above the grid cavity with an air gap to further increase the gain. As a result, the VSWR performance remained unaffected, and an additional gain improvement of about 0.9 dB was achieved compared to the antenna with only the grid cavity.

Keywords: Slotted waveguide array antenna, High-gain, Wave Radar, Grid Cavity, Dielectric lens.

Acknowledgements: This work was supported in part by the National Research Foundation of Korea(NRF) grant funded by the Korea government(MSIT) (No. RS-2023-00253131).

Biography: He was born in South Korea. He received his B.S. and M.S. degrees in Electronic Communications Engineering from the Korea Maritime and Ocean University (KMOU), Korea, in 1989 and 1991, respectively. He received his Ph.D. degree in Electrical and Electronics Engineering from the Tokyo Institute of Technology, Japan, in 1996. Since 1997, he has been with the Department of Radio Communication Engineering at KMOU, where he is currently a professor. From January 2017 to February 2018, he served as a visiting professor at California State University, Fresno, USA.
He is currently serving as the Dean of the Graduate School at KMOU (2024–Present) and the Director of the Brain-Korea 21 Graduate School Program (2024–Present). He was the Chair of the IEEE AP-S Seoul Chapter (2019–2021), President and Vice President of the Korea Institute of Electromagnetic Engineering and Science (KIEES) (2017–2020), and previously chaired various key committees within KIEES and the Korea Institute of Communications (KIC).
His involvement with the International Symposium on Antennas and Propagation (ISAP) includes serving as a Member of the International Steering Committee (2010–2014), Technical Program Committee Chair for ISAP 2018 (2015–2018), and Local Advisory Committee Member for ISAP 2024 (2021–Present).
His professional memberships include Senior Member of IEEE Antennas and Propagation Society (since 1993), Honorary President of KIEES (2021–Present), and a former member of IEICE Japan (1993–2015). He has received numerous awards, including the President of the Republic of Korea’s Commendation (2020), Ministerial Awards from the Ministry of Science and ICT (2020) and Ministry of Education (2012), the KOFST Paper Award in Science and Technology (2021), and multiple Best Paper Awards from KIEES Conferences. He also received the Best Lecture Professor Award at KMOU in 2016, 2017 and 2022.
His major research interests include high-gain slotted waveguide array antennas for wave monitoring radar systems, beam-splitting patch antennas for Ku-band radar, multiband antennas for radio shadow zone communications, electromagnetic interference (EMI) analysis for broadcasting facilities, EMC regulations for nuclear plants, and AI-based Kalman filter estimation algorithms for beyond 5G and 6G mobile communication systems. He has published extensively and led numerous national R&D projects funded by the Korean government.