한국전자파학회논문지 (The Journal of Korean Institute of Electromagnetic Engineering and Science)

About The Journal of Korean Institute of Electromagnetic Engineering and Science

The Journal of Korean Institiute of Electromagnetic Engineering and Science (JKIEES) was launched in 1996 and has been published monthly by the Korean Institute of Electromagnetic Engineering and Science (KIEES). Since 2004 JKIEES was approved by NRF Korea to be indexed in Korea Citation Index (KCI). It is also indexed or abstraced in DOI/CrossRef, Google Scholar, EBSCO. For a period of 24 years, a total of 4,001 excellent papers have been published in JKIEES.
특집논문/SPECIAL EDITION

Oct 31, 2024

Measurement Method for Shielding Effectiveness of Metal Mesh Specimen in Free Space S-Band
자유공간 S-대역에서의 금속 메쉬 시편 차폐효과 측정 방법

Seung Eun Ka, Kitae Park, Jae W. Lee, Changwon Seo, Sia Lee, Insung Park, Seong Sik Yoon 가승은, 박기태, 이재욱, 서창원, 이시아, 박인성, 윤성식

J. Korean Inst. Electromagn. Eng. Sci. 2024;35(10):763-769.
https://doi.org/10.5515/KJKIEES.2024.35.10.763

In this study, we propose a method to measure the shielding effectiveness of relatively small mesh specimens, which are smaller than those typically used in free-space measurements, in S-band free space, where diffraction effects are significant, without using a lens horn antenna. The proposed method involves placing an absorber panel between the transmitting and receiving antennas and applying a time-gating technique to the measured scattering parameters to determine the shielding effectiveness. First, the shielding effectiven...
특집논문/SPECIAL EDITION

Oct 31, 2024

Benchmarking SAR Target Detection Networks and Analysis of Degradation Depending on the Phase Error
SAR 영상 탐지식별 네트워크 벤치마크 및 위상 오차에 의한 열화 분석

Minyoung Back, Jaewoo Ok, Heesub Shin 백민영, 옥재우, 신희섭

J. Korean Inst. Electromagn. Eng. Sci. 2024;35(10):770-779.
https://doi.org/10.5515/KJKIEES.2024.35.10.770

SAR images are more difficult to analyze and acquire than optical images; therefore, high-quality datasets for deep learning models are insufficient. In this study, a new detection dataset was generated based on the MSTAR dataset to train detection networks for ground military targets. To verify the dataset and analyze the performance of the ground target detection network in SAR images, various models were used to compare the detection ability, resulting in an overall good performance of mAP 0.8 or higher. In addition, we analyzed the performa...
특집논문/SPECIAL EDITION

Oct 31, 2024

RF Exposure Analysis of an MRI System Based on Thermal Simulation
온도 수치해석 기반 MRI 전자파 노출 분석

Sukhoon Oh, Seon-Eui Hong, Ae-Kyoung Lee, Hyung-Do Choi 오석훈, 홍선의, 이애경, 최형도

J. Korean Inst. Electromagn. Eng. Sci. 2024;35(10):780-786.
https://doi.org/10.5515/KJKIEES.2024.35.10.780

The increased magnetic field strength in MRI improves the spatial resolution and image quality of the metabolic activity of the human body by increasing the SNR. As the magnetic field increases, the level of RF exposure increases; therefore, extra care should be taken with high-field MRI scans. MRI regulated by IEC 60601-2-33 has been reported in several studies to be inefficient in MRI operation owing to overly conservative SAR-based regulations. The latest revisions to the IEC and ICNIRP show a dramatic increase in the use of temperature-base...
특집논문/SPECIAL EDITION

Oct 31, 2024

SAR Image Reconstruction of RF Field Based on MR Temperature Image
MRI 온도영상 기반 RF 필드의 SAR 영상복원

Sangwoo Kim, Giuseppe Carluccio, Christopher M. Collins, Sukhoon Oh 김상우, Giuseppe Carluccio, Christopher M. Collins, 오석훈

J. Korean Inst. Electromagn. Eng. Sci. 2024;35(10):787-793.
https://doi.org/10.5515/KJKIEES.2024.35.10.787

High-resolution MRI images are essential for the accurate diagnosis of diseases. Increasing the magnetic field strength achieves this but also raises the Specific Absorption Rate (SAR) of electromagnetic waves in the body, leading to safety concerns. Currently, SAR is managed by assuming an even distribution of electromagnetic waves; however, high-field MRI can cause localized concentrations. No direct method for SAR visualization exists that relies on numerical analysis, resulting in conservative management and inefficiency. This paper present...
특집단편논문/SPECIAL SHORT PAPER

Oct 31, 2024

A Differential Structure-Based 4-Channel Ka-Band RF Beamforming Transmitter Chipset for SATCOM
차세대 위성통신용 차동구조 기반의 4채널 Ka 대역 RF 빔포밍 송신 칩셋

Do-Hyeong Kim, Hui-Ju Seo, Sang Gyun Kim, Seung Hwan Jung, Sang-Pill Lee, Choongho Song, Moon-Kyu Cho 김도형, 서희주, 김상균, 정승환, 이상필, 송충호, 조문규

J. Korean Inst. Electromagn. Eng. Sci. 2024;35(10):794-797.
https://doi.org/10.5515/KJKIEES.2024.35.10.794

Beamforming technology for next-generation space applications has requirements such as multi-function, high integration, high performance, and high reliability of the system. In this study, the system was designed based on a differential structure to minimize performance variations and degradation owing to the interconnection of the semiconductor chipset and package. In addition, to compensate for the insertion loss characteristics due to the frequency-dependent loss characteristics of the passive elements, two loss compensation amplifiers with...
특집단편논문/SPECIAL SHORT PAPER

Oct 31, 2024

Design of Drone ID Decoder Using a Multiarray Directional Antenna and High-Speed Switch
다중 배열 지향성 안테나와 고속 스위치를 이용한 Drone ID 디코딩 장치 설계

Sung-Won Moon, Jong-Sub Kim, Byung-Kwan Son 문성원, 김종섭, 손병관

J. Korean Inst. Electromagn. Eng. Sci. 2024;35(10):798-801.
https://doi.org/10.5515/KJKIEES.2024.35.10.798

Recently, the use of drones in wars and terrorism has rapidly increased, and various detection technologies are being developed to detect and analyze drone signals and obtain flight information to respond to threats, regardless of whether they are domestic or international. To detect drone signals in all directions, existing technologies apply omnidirectional antennas to a single receiver, which has a limited detection range. As the gain increases, the vertical detection range narrows. In addition, methods using directional antennas increase th...
논문/REGULAR PAPER

Oct 31, 2024

Design and Fabrication of Wideband High Power Transmission Board Using True Time Delay
실시간 지연 소자를 이용한 광대역 고출력송신조립체 설계 및 제작

Younghoon Jeong, Yeonjun Noh, Minchul Kim, Sungjun Park, Juyoung Choi, Jaesub Han, Namwoo Choi, Sangsu Kim, Changhyun Kang 정영훈, 노연준, 김민철, 박성준, 최주영, 한재섭, 최남우, 김상수, 강창현

J. Korean Inst. Electromagn. Eng. Sci. 2024;35(10):802-809.
https://doi.org/10.5515/KJKIEES.2024.35.10.802

This study describes the design and measurement results of a wideband phased-array high-power transmission board for electronic warfare systems. The proposed high-power transmission board (HPTB) comprises a wideband gallium nitride (GaN) high-power amplifier and a true-time delay device to minimize the beam squint over wide bandwidths. The designed HPTB achieved an average output power level of more than 15.4 W with a continuous wave over the frequency range, and the flatness of the output power was up to 3.92 dB. In addition, when the input vo...
논문/REGULAR PAPER

Oct 31, 2024

Design of FMCW-Based Nonlinear Radar System and Its Performance Test
FMCW 기반의 비선형 레이다 시스템 설계 및 성능 시험

Sooyoung Oh, Taeyong Jeong, Hyungseok Nam, Jisu Kim, Juntaek Oh, Chulhun Seo, Keum Cheol Hwang, Sun K. Hong 오수영, 정태용, 남형석, 김지수, 오준택, 서철헌, 황금철, 홍순기

J. Korean Inst. Electromagn. Eng. Sci. 2024;35(10):810-815.
https://doi.org/10.5515/KJKIEES.2024.35.10.810

In this study, we designed and fabricated an FMCW-based nonlinear radar system and presented test results for nonlinear targets. The operating band of the transmitter of the proposed system is 3~3.2 GHz, and the operating band of the receiver was 6~6.4 GHz, which corresponded to the second harmonic of the transmission band. The transmit/receiver array antenna gain was 19 dBi, whereas the maximum output of the power amplifier and the maximum gain of the low-noise amplifier were 37 dBm and 16.4 dB, respectively. The performance of the proposed sy...
논문/REGULAR PAPER

Oct 31, 2024

1-2 GHz Doherty Power Amplifier Applying a Simplified Load Network and Composite Output Back-off Extension Techniques
간략화된 출력 네트워크와 종합적인 출력 Back-off 확장 기술을 적용한 1~2 GHz 광대역 Doherty 전력증폭기

Eunjoo Yoo, Yifei Chen, Sooncheol Bae, Soohyun Bin, Yoonjung Lee, Yunhyung Ju, Youngoo Yang 유은주, 진일비, 배순철, 빈수현, 이윤정, 주윤형, 양영구

J. Korean Inst. Electromagn. Eng. Sci. 2024;35(10):816-827.
https://doi.org/10.5515/KJKIEES.2024.35.10.816

This paper presents a broadband Doherty power amplifier (DPA) with an extended output power back-off (OBO) and a simplified output matching network (OMN) by merging parallel components and replacing lumped components with an equivalent transmission line. The circuit parameters defining the structure of the OMN were derived from the ABCD matrices. For the broadband design, the structure with the widest fractional bandwidth (FBW) was selected among the eight structures with different combinations of circuit parameters. Under continuous wave (CW) ...
논문/REGULAR PAPER

Oct 31, 2024

Simulation of Leakage Electromagnetic Radiation from Vehicle due to Battery Management System
Battery Management System에 의한 자동차 누설 전자파 시뮬레이션

Yeongwoo Lee, Il-suek Koh 이영우, 고일석

J. Korean Inst. Electromagn. Eng. Sci. 2024;35(10):828-834.
https://doi.org/10.5515/KJKIEES.2024.35.10.828

Because existing information on leaked electromagnetic waves is not available, a model and simulation method are required to generate this information. Owing to the complexity of the problem, a feasible simulation method that considers the characteristics of the leaked electromagnetic radiation from devices inside a vehicle and vehicle body frame effects is proposed. The known leakage spectrum of the device was converted into a time-domain signal using inverse Fourier transform. Because the device was modeled as a dipole antenna, the distortion...
논문/REGULAR PAPER

Oct 31, 2024

Effect of Air Gap between Microstrip Line and Magnetic Sheet on Transmission Attenuation
마이크로스트립 선로와 자성 시트 사이의 공극이 전송감쇠에 미치는 영향

Hyun Ho Park, Eakhwan Song, Jiseong Kim, Cheolsoo Kim 박현호, 송익환, 김지성, 김철수

J. Korean Inst. Electromagn. Eng. Sci. 2024;35(10):835-841.
https://doi.org/10.5515/KJKIEES.2024.35.10.835

In this study, we investigated the influence of an air gap between a microstrip line and a magnetic sheet on the reduction of electromagnetic noise that may arise when measuring the transmission attenuation characteristics of a sheet using the IEC 62333-2 standard method. First, the effect of the air gap on the transmission attenuation was examined through theoretical analysis, and these characteristics were verified through numerical simulations and experimental measurements.
논문/REGULAR PAPER

Oct 31, 2024

Study on a High-Resolution Map Generation Method by Mitigating Multipath Effects in Indoor Environments
실내 환경에서 멀티패스 효과 완화를 통한 고해상도 맵 생성 기법 연구

Jeong-Min Lee, Kyung-Tae Kim 이정민, 김경태

J. Korean Inst. Electromagn. Eng. Sci. 2024;35(10):842-856.
https://doi.org/10.5515/KJKIEES.2024.35.10.842

This study proposes a novel method for accurately identifying target information by mitigating multipath effects in indoor environments. First, range–velocity maps were generated by applying a 2D fast Fourier transform to received data. Then, the influence of stationary clutter was decreased using the exponential moving average. Next, multiple range–velocity maps were grouped, and thresholds were set based on the variance along the range axis of the range–velocity maps and correlation coefficients to select the range–velocity maps for s...
단편논문/SHORT PAPER

Oct 31, 2024

Design of a Circularly Polarized Microstrip Patch Antenna with a Stacked Structure
적층 구조가 적용된 원형편파 마이크로스트립 패치 안테나 설계

Mok Yoon Park, Su-Cheol Yeo, Keum Cheol Hwang 박목윤, 여수철, 황금철

J. Korean Inst. Electromagn. Eng. Sci. 2024;35(10):857-860.
https://doi.org/10.5515/KJKIEES.2024.35.10.857

In this study, a directly fed microstrip patch antenna with circular polarization was proposed, utilizing a stacked structure to enhance the impedance and axial ratio bandwidths. The proposed antenna consists of a driven patch antenna and a parasitic patch antenna with an air layer and a parasitic patch inserted between the lower and upper substrates to increase the impedance and axial ratio bandwidths. For circular polarization, the diagonal corners of the driven and parasitic patches were truncated and a cross-shaped slot was added inside the...

CURRENT ISSUE: Oct 2024, Vol. 35 , No. 10

특집논문/SPECIAL EDITION Measurement Method for Shielding Effectiveness of Metal Mesh Specimen in Free Space S-Band 자유공간 S-대역에서의 금속 메쉬 시편 차폐효과 측정 방법 Seung Eun Ka, Kitae Park, Jae W. Lee, Changwon Seo, Sia Lee, Insung Park, Seong Sik Yoon 가승은, 박기태, 이재욱, 서창원, 이시아, 박인성, 윤성식 J. Korean Inst. Electromagn. Eng. Sci. 2024;35(10):763-769. https://doi.org/10.5515/KJKIEES.2024.35.10.763 HTML PDF PubReader	특집논문/SPECIAL EDITION Benchmarking SAR Target Detection Networks and Analysis of Degradation Depending on the Phase Error SAR 영상 탐지식별 네트워크 벤치마크 및 위상 오차에 의한 열화 분석 Minyoung Back, Jaewoo Ok, Heesub Shin 백민영, 옥재우, 신희섭 J. Korean Inst. Electromagn. Eng. Sci. 2024;35(10):770-779. https://doi.org/10.5515/KJKIEES.2024.35.10.770 HTML PDF PubReader
특집논문/SPECIAL EDITION RF Exposure Analysis of an MRI System Based on Thermal Simulation 온도 수치해석 기반 MRI 전자파 노출 분석 Sukhoon Oh, Seon-Eui Hong, Ae-Kyoung Lee, Hyung-Do Choi 오석훈, 홍선의, 이애경, 최형도 J. Korean Inst. Electromagn. Eng. Sci. 2024;35(10):780-786. https://doi.org/10.5515/KJKIEES.2024.35.10.780 HTML PDF PubReader	특집논문/SPECIAL EDITION SAR Image Reconstruction of RF Field Based on MR Temperature Image MRI 온도영상 기반 RF 필드의 SAR 영상복원 Sangwoo Kim, Giuseppe Carluccio, Christopher M. Collins, Sukhoon Oh 김상우, Giuseppe Carluccio, Christopher M. Collins, 오석훈 J. Korean Inst. Electromagn. Eng. Sci. 2024;35(10):787-793. https://doi.org/10.5515/KJKIEES.2024.35.10.787 HTML PDF PubReader
특집단편논문/SPECIAL SHORT PAPER A Differential Structure-Based 4-Channel Ka-Band RF Beamforming Transmitter Chipset for SATCOM 차세대 위성통신용 차동구조 기반의 4채널 Ka 대역 RF 빔포밍 송신 칩셋 Do-Hyeong Kim, Hui-Ju Seo, Sang Gyun Kim, Seung Hwan Jung, Sang-Pill Lee, Choongho Song, Moon-Kyu Cho 김도형, 서희주, 김상균, 정승환, 이상필, 송충호, 조문규 J. Korean Inst. Electromagn. Eng. Sci. 2024;35(10):794-797. https://doi.org/10.5515/KJKIEES.2024.35.10.794 HTML PDF PubReader	특집단편논문/SPECIAL SHORT PAPER Design of Drone ID Decoder Using a Multiarray Directional Antenna and High-Speed Switch 다중 배열 지향성 안테나와 고속 스위치를 이용한 Drone ID 디코딩 장치 설계 Sung-Won Moon, Jong-Sub Kim, Byung-Kwan Son 문성원, 김종섭, 손병관 J. Korean Inst. Electromagn. Eng. Sci. 2024;35(10):798-801. https://doi.org/10.5515/KJKIEES.2024.35.10.798 HTML PDF PubReader
논문/REGULAR PAPER Design and Fabrication of Wideband High Power Transmission Board Using True Time Delay 실시간 지연 소자를 이용한 광대역 고출력송신조립체 설계 및 제작 Younghoon Jeong, Yeonjun Noh, Minchul Kim, Sungjun Park, Juyoung Choi, Jaesub Han, Namwoo Choi, Sangsu Kim, Changhyun Kang 정영훈, 노연준, 김민철, 박성준, 최주영, 한재섭, 최남우, 김상수, 강창현 J. Korean Inst. Electromagn. Eng. Sci. 2024;35(10):802-809. https://doi.org/10.5515/KJKIEES.2024.35.10.802 HTML PDF PubReader	논문/REGULAR PAPER Design of FMCW-Based Nonlinear Radar System and Its Performance Test FMCW 기반의 비선형 레이다 시스템 설계 및 성능 시험 Sooyoung Oh, Taeyong Jeong, Hyungseok Nam, Jisu Kim, Juntaek Oh, Chulhun Seo, Keum Cheol Hwang, Sun K. Hong 오수영, 정태용, 남형석, 김지수, 오준택, 서철헌, 황금철, 홍순기 J. Korean Inst. Electromagn. Eng. Sci. 2024;35(10):810-815. https://doi.org/10.5515/KJKIEES.2024.35.10.810 HTML PDF PubReader
논문/REGULAR PAPER 1-2 GHz Doherty Power Amplifier Applying a Simplified Load Network and Composite Output Back-off Extension Techniques 간략화된 출력 네트워크와 종합적인 출력 Back-off 확장 기술을 적용한 1~2 GHz 광대역 Doherty 전력증폭기 Eunjoo Yoo, Yifei Chen, Sooncheol Bae, Soohyun Bin, Yoonjung Lee, Yunhyung Ju, Youngoo Yang 유은주, 진일비, 배순철, 빈수현, 이윤정, 주윤형, 양영구 J. Korean Inst. Electromagn. Eng. Sci. 2024;35(10):816-827. https://doi.org/10.5515/KJKIEES.2024.35.10.816 HTML PDF PubReader	논문/REGULAR PAPER Simulation of Leakage Electromagnetic Radiation from Vehicle due to Battery Management System Battery Management System에 의한 자동차 누설 전자파 시뮬레이션 Yeongwoo Lee, Il-suek Koh 이영우, 고일석 J. Korean Inst. Electromagn. Eng. Sci. 2024;35(10):828-834. https://doi.org/10.5515/KJKIEES.2024.35.10.828 HTML PDF PubReader
논문/REGULAR PAPER Effect of Air Gap between Microstrip Line and Magnetic Sheet on Transmission Attenuation 마이크로스트립 선로와 자성 시트 사이의 공극이 전송감쇠에 미치는 영향 Hyun Ho Park, Eakhwan Song, Jiseong Kim, Cheolsoo Kim 박현호, 송익환, 김지성, 김철수 J. Korean Inst. Electromagn. Eng. Sci. 2024;35(10):835-841. https://doi.org/10.5515/KJKIEES.2024.35.10.835 HTML PDF PubReader	논문/REGULAR PAPER Study on a High-Resolution Map Generation Method by Mitigating Multipath Effects in Indoor Environments 실내 환경에서 멀티패스 효과 완화를 통한 고해상도 맵 생성 기법 연구 Jeong-Min Lee, Kyung-Tae Kim 이정민, 김경태 J. Korean Inst. Electromagn. Eng. Sci. 2024;35(10):842-856. https://doi.org/10.5515/KJKIEES.2024.35.10.842 HTML PDF PubReader
단편논문/SHORT PAPER Design of a Circularly Polarized Microstrip Patch Antenna with a Stacked Structure 적층 구조가 적용된 원형편파 마이크로스트립 패치 안테나 설계 Mok Yoon Park, Su-Cheol Yeo, Keum Cheol Hwang 박목윤, 여수철, 황금철 J. Korean Inst. Electromagn. Eng. Sci. 2024;35(10):857-860. https://doi.org/10.5515/KJKIEES.2024.35.10.857 HTML PDF PubReader

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