Sang Min Lee

Prof. Dr. Sang Min Lee

orcid

Research Focus & Metrics

Academic Career Length

7Years (2020-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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17 March 2022 in Sensors
Verified
Journal Article
Open access
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HAHussain Askari
Hussain Askari
Niamat HussainNiamat Hussain
Niamat Hussain
Md Abu SufianMd Abu Sufian
Md Abu Sufian
SLSang Min Lee
Sang Min Lee
Nam KimNam Kim
Nam Kim
In this paper, a wideband circularly polarized (CP) magnetoelectric (ME) dipole antenna operating at 28 GHz band was proposed for 5G millimeter-wave (mm-wave) communications. The antenna geometry included two metallic plates with extended hook-shaped strips at its principal diagonal position, and two corners of truncated metallic plates at the secondary diagonal position. The pair of metallic vias connected the modified strips to the ground plane to create the magnetic dipole. The L-shaped probe feed between the strips was used to excite the antenna. The antenna showed stable gain and wideband characteristics. The simulated and measured results showed that the proposed CP ME dipole antenna had an overlapping (|S11|< −10 dB impedance and 3 dB axial ratio) bandwidth of 18.1% (25–30 GHz), covering the frequency bands dedicated for 5G new radio communications. Moreover, an average gain of 8 dBic was achieved by the antenna throughout the operating bandwidth. The measured data verified the design concept, and the proposed antenna had a small footprint of 0.83 λo × 0.83 λo × 0.125 λo (λo is free space wavelength at the lowest operating frequency), suitable for its application in 5G smart devices and sensors.

18 April 2025 in Scientific Reports
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Journal Article
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ASAbu Sufian
Abu Sufian
SLSang Min Lee
Sang Min Lee
DCDomin Choi
Domin Choi
JLJaemin Lee
Jaemin Lee
DSDongkyu Sim
Dongkyu Sim
Nam KimNam Kim
Nam Kim
To accommodate the antenna demand for rural communication and safety monitoring a shared aperture muti-port antenna sensor is presented for three different operating frequencies covering both Sub- 6 GHz and 5G millimeter-wave bands. The antenna sensor is designed on a single substrate, while different ports are connected to different radiating elements to achieve multiple frequency responses. The simulated and measured findings show that the presented antenna can cover TV-white-space (TVWS) frequency band, 5.8 GHz ISM band, and the 5G millimeter-wave frequency band. At the TVWS band, the antenna yields an omnidirectional radiation pattern with a peak gain of 3.14 dBi. While the antenna provides a unidirectional radiation pattern at the 5.8 GHz ISM and 5G millimeter-wave band with a peak gain of 6.76 dBi and 7.68 dBi, respectively. Moreover, all the antenna ports offer a radiation efficiency of more than 92%. Additionally, the 2-port MIMO configuration at the 5G millimeter-wave band shows excellent MIMO diversity performances by utilizing the proposed novel decoupling structure, which consists of metallic stub and cavity vias. Overall performance of the proposed antenna, especially the three operating frequency band including the TVWS band, makes it a viable solution for the sensing and communication in rural areas.

31 January 2024 in The Journal of Korean Institute of Information Technology
Verified
Journal Article
Closed access
HKHakpyo Kim
Hakpyo Kim
KSKyungsun Shin
Kyungsun Shin
SLSang Min Lee
Sang Min Lee
YKYoonsik Kwak
Yoonsik Kwak
본 논문은 학령 인구의 감소라는 국가적 문제에 대응하여 지방대학의 생존을 위한 행정 및 재정전략을 제안하기 위하여 2년(21, 22년도)의 재정자료의 분석을 통하여 대학원 생존 전략을 기획하는 것을 목표로 하는 K-대학 실증사례 중심의 연구이다. 분석 결과를 바탕으로 재정지원의 집중화로 대학원 신입생(일반전형 및 외국인 전형) 충원율 증대 및 연구 중심 그리고 지역 정주 기반의 대학 특성화 강화 효과를 얻을 수 있었다. 또한 대학원에 관한 행정 정보의 서비스 고도화 및 정보화 그리고 전문인력에 대한 리쿠르트 기능을 포함한 글로벌 네트워크 기능을 강화하는 홈페이지 전략을 통하여 대학원 신입생에 대한 홍보 및 외국인 신입생 확보를 위한 플랫폼을 구축할 수 있었다.

10 November 2025 in Journal of Power Electronics
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Journal Article
Closed access
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JYJeong-Seon Yu
Jeong-Seon Yu
HKHae-In Kim
Hae-In Kim
SLSang Min Lee
Sang Min Lee
HKHag Wone Kim
Hag Wone Kim

31 October 2024 in The Journal of Korean Institute of Information Technology
Verified
Journal Article
Closed access
SHSeung-Kweon Hong
Seung-Kweon Hong
KLKyung Haeng Lee
Kyung Haeng Lee
SLSang Min Lee
Sang Min Lee
JKJongWon Kim
JongWon Kim
YKYoonsik Kwak
Yoonsik Kwak
본 논문은 대학원의 학제 고도화 전략 수립을 목적으로 K-대학 실증사례 중심의 자료 분석을 통하여 공통 교과목 설계 및 공유교과목의 운영 방법에 관하여 연구하였다. K-대학의 사례를 중심으로 학부 참여형, 대학 간 교류형, 학과 중심형, 대학원 중심형의 학제 고도화 모형을 제안하였다. 또한 논문 작성법, 외국어(영어 및 한국어), 인공지능 기반 기초교과목이라는 공유교과목을 통하여 대학생과 대학원생의 수요에 대응하고 최근의 융합기술 발전 추세에 대응하며 대학과 대학원의 지역 정주 기반 인력양성 기반을 구축할 수 있었다. 또한 고도화된 학제 기반으로 국외 대학의 우수한 연구 인력 자원을 확보할 수 있었으며 또한 K-대학의 연구 중심 비전을 달성할 수 있었다.

31 July 2026 in The Journal of Korean Institute of Information Technology
Verified
Journal Article
Closed access
YLYu-Sun Lee
Yu-Sun Lee
MLMook Lim
Mook Lim
SLSang Min Lee
Sang Min Lee