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

About The Journal of Korean Institute of Electromagnetic Engineering and Science

JKIEES (The Journal of Korean Institute of Electromagnetic Engineering and Science) was launched in 1996 and has been published Monthly by the Korean Institute of Electromagnetic Engineering and Science. It was selected as a candidate journal to be registered with National Research Foundation of Korea and finally registered with the Foundation in 2004. Total of the articles in our journal are indexed in DOI/CrossRef, Google Scholar, and EBSCO. For a period of 16 years, about 2,300 excellent papers have been published by our journal. JKIEES has posted papers largely on profound research of antennas, microwave engineering, EMI/EMC, and applied electromagnetics. Its fields of contributed paper also have been expanded into diverse areas such as wireless communication systems, spectrum engineering, RF systems, electromagnetic materials, radar and radio application, and electromagnetic scattering and imaging. Since 2004, JKIEES has encouraged contributions from authors whose papers were recommended as excellent papers by academic conference heads and posted their papers in featured sessions.
특집논문/SPECIAL EDITION

Mar 31, 2021

Linearity Improved High Efficiency GaN-HEMT Dual-Band Doherty Power Amplifier
선형성 개선을 위한 고효율 GaN-HEMT 이중대역 Doherty 전력 증폭기

Kyu-sik Woo, Chul-hun Seo 우규식, 서철헌

J. Korean Inst. Electromagn. Eng. Sci. 2021;32(3):209-214.
https://doi.org/10.5515/KJKIEES.2021.32.3.209

This paper describes a technique to improve the linearity of the Doherty power amplifier by designing a harmonic termination network operating in the 2.4 GHz and 3.5 GHz bands and attenuating the 2nd and 3rd harmonics below −30 dB. The proposed amplifier use CREE CGH 40006P GaN high electron mobility transistors (HEMTs) to be designed as a main amplifier and an auxiliary amplifier, and signals are input to the amplifier through a Wilkinson power divider. The fabricated power amplifiers measured 36.8 dBm of output power and 66.13% of power add...
특집논문/SPECIAL EDITION

Mar 31, 2021

Design of Photonics-Based FMCW Transceiver System for High-Resolution ISAR
고해상도 ISAR 영상을 위한 광자 기반 FMCW 송수신 시스템 설계

Sungjun Yoo, Youngseok Bae, Minwoo Yi, Sunghoon Jang, Joon Hyung Ryoo, Jeongbin Nam, Jinwoo Shin 류성준, 배영석, 이민우, 장성훈, 유준형, 남정빈, 신진우

J. Korean Inst. Electromagn. Eng. Sci. 2021;32(3):215-222.
https://doi.org/10.5515/KJKIEES.2021.32.3.215

This paper proposes a design for a photonics-based radar system for high-resolution inverse synthetic-aperture radar (ISAR) images. The proposed radar system can derive broadband characteristics using optical elements, such as phase modulator, laser source, and dual parallel Mach-Zehnder modulator (DPMZM). The detection performance and ISAR images for the target are observed according to the bandwidth of the radar system using modeling and simulation (M&S) for the proposed radar system. To verify the effectiveness of the bandwidth of the ra...
논문/REGULAR PAPERS

Mar 31, 2021

Low-Profile Vehicle-Mounted Antenna with Omnidirectional Radiation Pattern at High-Frequency Band
전방향성 방사 패턴을 갖는 차량용 HF 대역 저자세 안테나

Sung-Yong Cho, Jae-Young Chung 조성용, 정재영

J. Korean Inst. Electromagn. Eng. Sci. 2021;32(3):223-232.
https://doi.org/10.5515/KJKIEES.2021.32.3.223

This paper proposes a high-frequency (HF) band on an extremely low-profile antenna that can be mounted on the roof of a car. This antenna generates a monopole-like omnidirectional radiation pattern despite the low height of the patch shape (5 cm, 0.0034λ @ 20 MHz). A coil was installed at the edge of the antenna feeding part and the patch to increase the quality factor (Q-factor) and a shorting pin was connected next to the coil to ensure that in-phase current flows through the feeding part and shorting pin. The coil is designed such that th...
논문/REGULAR PAPERS

Mar 31, 2021

A 100 MHz VCXO Using an Inverter Logic Gate
인버터 논리소자를 이용한 100-MHz VCXO

Jong-Hang Choi, Jin-Seong Roh, Kyung-Whan Yeom 최종항, 노진성, 염경환

J. Korean Inst. Electromagn. Eng. Sci. 2021;32(3):233-242.
https://doi.org/10.5515/KJKIEES.2021.32.3.233

In this paper, we present the design, fabrication, and phase noise measurement of a 100 MHz voltage-controlled crystal oscillator (VCXO). The resonator used for the VCXO is a third-order overtone-mode crystal resonator with a resonance frequency of 100 MHz. The VCXO was fabricated on a 0.8 mm thickness FR4 two-layer substrate. The fabricated VCXO has an output power of approximately +8 dBm and a frequency of 99.992 MHz (approximately 8 kHz deviation from the center frequency of 100 MHz) at 0 V and 100.003 MHz (approximately 3 kHz deviation from...
논문/REGULAR PAPERS

Mar 31, 2021

Design of a 900 MHz Band Wake-Up Receiver with −52 dBm Sensitivity
−52 dBm 수신 감도를 갖는 900 MHz 대역 Wake-Up 수신기 설계

Min-Gyo Kang, Ji-Woo Park, Young-Sik Kim 강민교, 박지우, 김영식

J. Korean Inst. Electromagn. Eng. Sci. 2021;32(3):243-249.
https://doi.org/10.5515/KJKIEES.2021.32.3.243

This paper describes the results of manufacturing and measuring low-power wake-up receiver (WuRx) modules operating in the 900 MHz band using the AS3933 amplitude shift keying (ASK) receiver chip. The RF envelope detector has the advantage of low power consumption, but it has the disadvantage of low sensitivity. Therefore, this study designed the WuRx by applying antenna impedance matching circuits, envelope detectors with voltage doubler structure, LC filters in the form of removing ripples, and the 5th-order Chebyshev low-pass filters to incr...
논문/REGULAR PAPERS

Mar 31, 2021

SDR Implementation of 64-QAM OFDM Using USRP
USRP를 이용한 64-QAM OFDM 소프트웨어 정의 라디오 구현

Min-Su Kim, Young-Sik Kim 김민수, 김영식

J. Korean Inst. Electromagn. Eng. Sci. 2021;32(3):250-256.
https://doi.org/10.5515/KJKIEES.2021.32.3.250

In this study, a software-defined radio based on orthogonal frequency division multiplexing (OFDM) is implemented to optimize universal software radio peripheral (USRP) for the optimal bit error rate. Two USRP B200s are used as the hardware platform, and an OFDM signal of 802.11a WiFi standard is used. The wireless system works with 64-QAM modulation and operates at the carrier frequency of 2.61 GHz to avoid interference. An OFDM signal generally has a large peak to average power ratio (PAPR) such that the transceiver is optimized to obtain the...
논문/REGULAR PAPERS

Mar 31, 2021

Assembled Electromagnetic Simulation Method for Efficient Analysis of Connector Design
부분 해석 결합 모델을 이용한 커넥터의 효율적 해석 방법

Junhee Han, Giryoung Woo, Jaewoo Choi, Wansoo Nah 한준희, 우기룡, 최재우, 나완수

J. Korean Inst. Electromagn. Eng. Sci. 2021;32(3):257-268.
https://doi.org/10.5515/KJKIEES.2021.32.3.257

This paper presents a method for the efficient simulation and analysis of connector designs. Connectors used in a high-frequency system comprise various materials. Matching the impedance of the discontinuous part of the internal lines is difficult, owing to their complex structures. Therefore, it is essential to predict and modify the impedance discontinuity at the design stage. Moreover, the process of predicting the characteristics through electromagnetic (EM) simulations is essential to detect the deterioration in the performance of the conn...
논문/REGULAR PAPERS

Mar 31, 2021

Configuration of Waveguide Septa for Radiation of Horizontal Polarization from Slots on Narrow Side Wall in Waveguide Array Antenna for Satellite Synthetic-Aperture Radar (SAR) Applications
위성 Synthetic-Aperture Radar (SAR) 시스템용 도파관 배열 안테나에서 도파관 측벽 슬롯의 수평편파 방사를 위한 격벽 구성 방법

Kristian Dimitrov, Yongshik Lee, Sungchan Song, Seongsik Yoon, Seungjoo Jo 크리스티얀디미트로브, 이용식, 송성찬, 윤성식, 조승주

J. Korean Inst. Electromagn. Eng. Sci. 2021;32(3):269-276.
https://doi.org/10.5515/KJKIEES.2021.32.3.269

The application of septa to change the oscillating direction of the waveguide fields is demonstrated in this study. For dual-polarization waveguide slot array antennas, two different waveguides are often used to maximize the cross-polarization discrimination level between them. In such arrays, slots may be designed on the narrow sidewall to reduce the element spacing and to suppress the grating lobes. Septums can be used to change the direction of TE10 mode electric fields, so that radiation occurs from the transverse slots on narrow sidewalls....
논문/REGULAR PAPERS

Mar 31, 2021

Drone Detection Using DTV-Based Passive Radar System
DTV 방송 신호를 사용한 드론 탐지 수동형 레이다의 구현

Hyung-Il Chun, Sae-Mi Lee, , Min-Jeong Moon, Woo-Kyung Lee, Hoon Lee 천형일, 이새미, 이상민, 문민정, 이우경, 이훈

J. Korean Inst. Electromagn. Eng. Sci. 2021;32(3):277-288.
https://doi.org/10.5515/KJKIEES.2021.32.3.277

Despite increasing threats from hostile drones, the conventional active radar system remains inappropriate for urban surveillance purposes. The digital video broadcasting-terrestrial (DVB-T) signal exhibits a wide bandwidth and high transmit power compared with FM or WiFi signals, and hence enables the design of simple, low-cost passive radar with wide coverage areas. In this paper, a DVB-T system is employed to construct a passive radar surveillance system, and its performance is assessed experimentally in terms of detecting airplanes and smal...
논문/REGULAR PAPERS

Mar 31, 2021

2D Indoor Direction and Location Finding System Based on Gradient Descent Machine Learning Algorithm
경사 하강 기계학습 기법을 이용한 2D 실내 전파 방향 및 위치 측위 시스템

Hyewon Kang, Yerim Mun, Soomin Park, Sangkil Kim 강혜원, 문예림, 박수민, 김상길

J. Korean Inst. Electromagn. Eng. Sci. 2021;32(3):289-296.
https://doi.org/10.5515/KJKIEES.2021.32.3.289

In this paper, a 2D indoor direction and location finding system using a gradient descent machine learning algorithm is presented. The proposed antenna consists of four folded dipole antennas and an SP4T PIN diode switch. The SP4T switch was controlled by four digital output pins of the Arduino microcontroller. The antenna was connected to the USRP N200 SDR and controlled by the LabView platform. LabView transfers the magnitude of the received RF power to MATLAB to calculate the incident angle and distance of an electromagnetic wave source. The...
논문/REGULAR PAPERS

Mar 31, 2021

Track-Beam Operation Strategy to Improve Track Maintenance Performance of Fighter AESA Radar
추적 유지 성능 개선을 위한 전투기 레이다 추적 파형 운용기법

Yeonhee Park 박연희

J. Korean Inst. Electromagn. Eng. Sci. 2021;32(3):297-305.
https://doi.org/10.5515/KJKIEES.2021.32.3.297

An active electronically scanned array radar is able to radiate the search beam and track beam more independently than a mechanically scanned array radar. However, as the scan angle increases, the detection performance degrades; as a result, the track-on target could be lost due to scan loss. To overcome the degradation of the tracking performance for off-boresight targets, the effective track-beam operation strategy is proposed to compensate for the scan loss by increasing the dwell time. Because this strategy increases the frame time, which a...
논문/REGULAR PAPERS

Mar 31, 2021

Multi-Frequency Monopulse Direction Detection Method for Suppression of Multipath Effects in Low-Altitude Sea Target Tracking
저고도 해상표적 추적에서 다중경로 영향 억제를 위한 다중 주파수 모노펄스 방향 탐지 방법

Chang-Hyun Lee, Sang-Mi Chon, Jongkuk Park, Hyung-Ki Na, Sang-Hyun Kim 이창현, 전상미, 박종국, 나형기, 김상현

J. Korean Inst. Electromagn. Eng. Sci. 2021;32(3):306-314.
https://doi.org/10.5515/KJKIEES.2021.32.3.306

This paper proposed a monopulse method using multiple frequencies to overcome multipath interference in the tracking of low-altitude sea targets. The method determines target elevation candidates by comparing the difference between the measured complex monopulse ratios and those calculated considering multipath interference at three adjacent frequencies. The final target elevation is determined among the candidates by using a cost function set based on the characteristics of the results considering multipath interference. Because the proposed m...

CURRENT ISSUE: Mar 2021, Vol. 32 , No. 3

특집논문/SPECIAL EDITION Linearity Improved High Efficiency GaN-HEMT Dual-Band Doherty Power Amplifier 선형성 개선을 위한 고효율 GaN-HEMT 이중대역 Doherty 전력 증폭기 Kyu-sik Woo, Chul-hun Seo 우규식, 서철헌 J. Korean Inst. Electromagn. Eng. Sci. 2021;32(3):209-214. https://doi.org/10.5515/KJKIEES.2021.32.3.209 HTML PDF PubReader	특집논문/SPECIAL EDITION Design of Photonics-Based FMCW Transceiver System for High-Resolution ISAR 고해상도 ISAR 영상을 위한 광자 기반 FMCW 송수신 시스템 설계 Sungjun Yoo, Youngseok Bae, Minwoo Yi, Sunghoon Jang, Joon Hyung Ryoo, Jeongbin Nam, Jinwoo Shin 류성준, 배영석, 이민우, 장성훈, 유준형, 남정빈, 신진우 J. Korean Inst. Electromagn. Eng. Sci. 2021;32(3):215-222. https://doi.org/10.5515/KJKIEES.2021.32.3.215 HTML PDF PubReader
논문/REGULAR PAPERS Low-Profile Vehicle-Mounted Antenna with Omnidirectional Radiation Pattern at High-Frequency Band 전방향성 방사 패턴을 갖는 차량용 HF 대역 저자세 안테나 Sung-Yong Cho, Jae-Young Chung 조성용, 정재영 J. Korean Inst. Electromagn. Eng. Sci. 2021;32(3):223-232. https://doi.org/10.5515/KJKIEES.2021.32.3.223 HTML PDF PubReader	논문/REGULAR PAPERS A 100 MHz VCXO Using an Inverter Logic Gate 인버터 논리소자를 이용한 100-MHz VCXO Jong-Hang Choi, Jin-Seong Roh, Kyung-Whan Yeom 최종항, 노진성, 염경환 J. Korean Inst. Electromagn. Eng. Sci. 2021;32(3):233-242. https://doi.org/10.5515/KJKIEES.2021.32.3.233 HTML PDF PubReader
논문/REGULAR PAPERS Design of a 900 MHz Band Wake-Up Receiver with −52 dBm Sensitivity −52 dBm 수신 감도를 갖는 900 MHz 대역 Wake-Up 수신기 설계 Min-Gyo Kang, Ji-Woo Park, Young-Sik Kim 강민교, 박지우, 김영식 J. Korean Inst. Electromagn. Eng. Sci. 2021;32(3):243-249. https://doi.org/10.5515/KJKIEES.2021.32.3.243 HTML PDF PubReader	논문/REGULAR PAPERS SDR Implementation of 64-QAM OFDM Using USRP USRP를 이용한 64-QAM OFDM 소프트웨어 정의 라디오 구현 Min-Su Kim, Young-Sik Kim 김민수, 김영식 J. Korean Inst. Electromagn. Eng. Sci. 2021;32(3):250-256. https://doi.org/10.5515/KJKIEES.2021.32.3.250 HTML PDF PubReader
논문/REGULAR PAPERS Assembled Electromagnetic Simulation Method for Efficient Analysis of Connector Design 부분 해석 결합 모델을 이용한 커넥터의 효율적 해석 방법 Junhee Han, Giryoung Woo, Jaewoo Choi, Wansoo Nah 한준희, 우기룡, 최재우, 나완수 J. Korean Inst. Electromagn. Eng. Sci. 2021;32(3):257-268. https://doi.org/10.5515/KJKIEES.2021.32.3.257 HTML PDF PubReader	논문/REGULAR PAPERS Configuration of Waveguide Septa for Radiation of Horizontal Polarization from Slots on Narrow Side Wall in Waveguide Array Antenna for Satellite Synthetic-Aperture Radar (SAR) Applications 위성 Synthetic-Aperture Radar (SAR) 시스템용 도파관 배열 안테나에서 도파관 측벽 슬롯의 수평편파 방사를 위한 격벽 구성 방법 Kristian Dimitrov, Yongshik Lee, Sungchan Song, Seongsik Yoon, Seungjoo Jo 크리스티얀디미트로브, 이용식, 송성찬, 윤성식, 조승주 J. Korean Inst. Electromagn. Eng. Sci. 2021;32(3):269-276. https://doi.org/10.5515/KJKIEES.2021.32.3.269 HTML PDF PubReader
논문/REGULAR PAPERS Drone Detection Using DTV-Based Passive Radar System DTV 방송 신호를 사용한 드론 탐지 수동형 레이다의 구현 Hyung-Il Chun, Sae-Mi Lee, , Min-Jeong Moon, Woo-Kyung Lee, Hoon Lee 천형일, 이새미, 이상민, 문민정, 이우경, 이훈 J. Korean Inst. Electromagn. Eng. Sci. 2021;32(3):277-288. https://doi.org/10.5515/KJKIEES.2021.32.3.277 HTML PDF PubReader	논문/REGULAR PAPERS 2D Indoor Direction and Location Finding System Based on Gradient Descent Machine Learning Algorithm 경사 하강 기계학습 기법을 이용한 2D 실내 전파 방향 및 위치 측위 시스템 Hyewon Kang, Yerim Mun, Soomin Park, Sangkil Kim 강혜원, 문예림, 박수민, 김상길 J. Korean Inst. Electromagn. Eng. Sci. 2021;32(3):289-296. https://doi.org/10.5515/KJKIEES.2021.32.3.289 HTML PDF PubReader
논문/REGULAR PAPERS Track-Beam Operation Strategy to Improve Track Maintenance Performance of Fighter AESA Radar 추적 유지 성능 개선을 위한 전투기 레이다 추적 파형 운용기법 Yeonhee Park 박연희 J. Korean Inst. Electromagn. Eng. Sci. 2021;32(3):297-305. https://doi.org/10.5515/KJKIEES.2021.32.3.297 HTML PDF PubReader	논문/REGULAR PAPERS Multi-Frequency Monopulse Direction Detection Method for Suppression of Multipath Effects in Low-Altitude Sea Target Tracking 저고도 해상표적 추적에서 다중경로 영향 억제를 위한 다중 주파수 모노펄스 방향 탐지 방법 Chang-Hyun Lee, Sang-Mi Chon, Jongkuk Park, Hyung-Ki Na, Sang-Hyun Kim 이창현, 전상미, 박종국, 나형기, 김상현 J. Korean Inst. Electromagn. Eng. Sci. 2021;32(3):306-314. https://doi.org/10.5515/KJKIEES.2021.32.3.306 HTML PDF PubReader

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