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 28 years, a total of 4,145 excellent papers have been published in JKIEES.
논문/REGULAR PAPER

Nov 30, 2024

Design Method of Shared Aperture S/C-Band Array Antenna Based on Thinned
Thinned 기반 개구면 공유형 S/C-대역 배열 안테나 설계 기법

Dong Hwan Lee, Taeyong Jeong, Keum Cheol Hwang 이동환, 정태용, 황금철

J. Korean Inst. Electromagn. Eng. Sci. 2024;35(11):857-861.
https://doi.org/10.5515/KJKIEES.2024.35.11.857

This paper proposes a design method for thinned array-based aperture-sharing antenna for S/C-band applications. The operating frequencies of the proposed antenna are 3~3.2 GHz in the S band and 6~6.4 GHz in the C band. The single element design uses two RF-35 substrates and achieves a reflection coefficient below −10 dB in the aforementioned operating bands. The measured antenna gains are 6.64 and 6.65 dBi in S and C bands, respectively. To realize aperture sharing for the designed S/C-band single-radiating element, a thinned array-based aper...
논문/REGULAR PAPER

Nov 30, 2024

Improving Array Manifold Performance in Direction Finding Multi-Bay Antennas via Bay Spacing Optimization
방향탐지용 멀티 베이 안테나의 어레이 매니폴드 성능 향상 방법

Haeng-Sook Ro, Kang-Hee Kim, Ki-Cheol Tae, Gwang-Moon Park 노행숙, 김강희, 태기철, 박광문

J. Korean Inst. Electromagn. Eng. Sci. 2024;35(11):862-867.
https://doi.org/10.5515/KJKIEES.2024.35.11.862

This paper proposes a method to minimize the mutual interference between elements operating in different frequency bands in a multi-bay array antenna for wideband direction finding systems by optimizing the spacing between bays. Array antenna manifolds in practical environments often deviate from the ideal manifold obtained via mathematical modeling because factors such as mutual coupling, mechanical structure, and surrounding environmental conditions. The proposed method facilitates the optimization of the bay spacing to minimize the impact of...
논문/REGULAR PAPER

Nov 30, 2024

Broadband Doherty Power Amplifier Using Out-Phased Current Combining Method and Asymmetric Cells
비대칭 소자와 Out-Phased Current Combining 방식을 사용한 광대역 Doherty 전력증폭기

Jaeseong Song, Sooncheol Bae, Soohyeon Bin, Youngoo Yang 송재성, 배순철, 빈수현, 양영구

J. Korean Inst. Electromagn. Eng. Sci. 2024;35(11):868-879.
https://doi.org/10.5515/KJKIEES.2024.35.11.868

In this paper, we propose a broadband structure for a Doherty power amplifier (DPA) with an extended output power backoff (OBO) of 8 dB by using an out-phased current combining (OCC) method and an asymmetric architecture. To determine the matching conditions of the proposed DPA, the output matching network (OMN) is analyzed using transmission lines. Previous studies have employed additional circuits for broadband DPA design; in contrast, this paper presents the use of a compact but optimal OMN structure that provides a broad bandwidth. This str...
논문/REGULAR PAPER

Nov 30, 2024

A 106~133 GHz Wideband Power Amplifier in 40-nm CMOS Process
40-nm CMOS 공정을 이용한 106∼133 GHz 광대역 전력 증폭기

JoonHo Hwang, Munkyo Seo 황준호, 서문교

J. Korean Inst. Electromagn. Eng. Sci. 2024;35(11):880-887.
https://doi.org/10.5515/KJKIEES.2024.35.11.880

This paper presents a wideband power amplifier operating in the frequency range of 106~133 GHz, using a common-source differential structure implemented in a 40-nm CMOS process. Each stage of the amplifier, excluding the output, is matched using a wideband transformer with a series inductor, and the output is matched to the maximum output load impedance using a balun. Measurement results show a maximum gain of 22.3 dB at 116 GHz, 3-dB bandwidth of 27 GHz, and output saturation power of 9.4 dBm. The power consumption is 76 mW at 1.1 V supply vol...
논문/REGULAR PAPER

Nov 30, 2024

Measurement of Load–Reflection Coefficient Using High-Power, High-Frequency RF Source
고출력 고주파 RF 소스를 이용한 부하의 반사계수 측정

DoKyun Kim, CheaHyean Beak, JinJoo Choi 김도균, 백채현, 최진주

J. Korean Inst. Electromagn. Eng. Sci. 2024;35(11):888-894.
https://doi.org/10.5515/KJKIEES.2024.35.11.888

This paper proposes a real-time measurement system for reflection coefficients, utilizing a high-power, high-frequency RF source. The system is configured using a 2.45 GHz, 300 W GaN SSPA, two WR-284 directional couplers, two WR-284 circulators, an S-band mixer, and an analog-to-digital converter (ADC). By leveraging the one-port calibration of a commercial vector network analyzer (VNA) for error compensation, the system demonstrates the real-time acquisition of accurate reflection coefficients by using a MATLAB-integrated ADC program, without ...
논문/REGULAR PAPER

Nov 30, 2024

Implementation and Measurement of Low-Noise Amplifier Using RF Short-Circuit Capacitor
RF 단락 커패시터를 포함하는 고집적 저잡음 증폭기 제작 및 측정

Min-Su Kim 김민수

J. Korean Inst. Electromagn. Eng. Sci. 2024;35(11):895-901.
https://doi.org/10.5515/KJKIEES.2024.35.11.895

This paper presents the design of a highly integrated low-noise amplifier (LNA) for the 5G new radio (NR) band. The proposed LNA integrates two LNAs into a single chip die for the n77 (3.3~4.2 GHz) and n79 (4.4~5.0 GHz) bands and includes a bypass mode for flexible receiver operation according to the input signal strength. It also includes an input/output matching network circuit, electrostatic discharge (ESD) protection circuits, and part of the decoupling network circuit for RF short references for high integration and fidelity. The proposed ...
논문/REGULAR PAPER

Nov 30, 2024

Performance Analysis of Frequency-Invariant Multi-System for Broadband Direction Finding
광대역 방향 탐지를 위한 균일빔 기반 다중시스템 방향탐지 성능 분석 연구

Taeho Yu, Tae-Jung Kim, Byeonggwi Mun, Changho Choi, Gangil Byun 유태호, 김태정, 문병귀, 최창호, 변강일

J. Korean Inst. Electromagn. Eng. Sci. 2024;35(11):902-910.
https://doi.org/10.5515/KJKIEES.2024.35.11.902

This study estimates the direction of radio signals radiated by high-speed mobile platforms and analyzes detection performance using a frequency-invariant multisystem for broadband direction finding (DF). The discrete Fourier transform (DFT)-based frequency-invariant beamforming (FIB) algorithm was used to generate a constant beam pattern regardless of the frequency utilized. DFT-based FIB enables the rapid derivation of FIB weights. When applying FIB to a monopulse, a wide unambiguous range can be achieved. This can be used for monopulse DF th...
논문/REGULAR PAPER

Nov 30, 2024

Shielding Model of Single-Braided RF Cable Considering Structural Characteristics of Triaxial Method
Triaxial Method의 구조적 특성을 고려한 단일 편조 RF 케이블의 차폐 모델에 대한 연구

Jihyun Yang, Hyun Ho Park, Jiseong Kim, Wansoo Nah 양지현, 박현호, 김지성, 나완수

J. Korean Inst. Electromagn. Eng. Sci. 2024;35(11):911-919.
https://doi.org/10.5515/KJKIEES.2024.35.11.911

Radiofrequency (RF) cables are widely used in the automotive, aerospace, and defense industries as cable assemblies. Several electromagnetic compatibility (EMC) tests have shown that the issue of radiated emissions (RE) primarily affects interconnected power cables and cable connectors. Consequently, measuring transfer impedance, a parameter that indicates the effectiveness of cable shielding, has become increasingly important. The triaxial method for measuring transfer impedance is defined by the European Committee for Electrotechnical Standar...
논문/REGULAR PAPER

Nov 30, 2024

Analysis of Ionospheric Propagation Paths over the Korean Peninsula Based on Three-Dimensional Electron Density Data
3차원 전자밀도 데이터 기반 한반도 상공 전리층 전파 경로 분석

Do Hyeon Lee, Junmo Yang, Sangho Lim, Ik-Hwan Choi, Yong Bae Park 이도현, 양준모, 임상호, 최익환, 박용배

J. Korean Inst. Electromagn. Eng. Sci. 2024;35(11):920-928.
https://doi.org/10.5515/KJKIEES.2024.35.11.920

When electromagnetic waves propagate through the ionosphere, they deviate from the free-space propagation path because of refraction. This paper presents an analysis of the propagation paths of electromagnetic waves passing through the ionosphere over the Korean Peninsula, based on inhomogeneous 3D electron density data. On the basis of this analysis, the quantitative refraction errors are calculated considering the operating frequency, elevation angle, and variations across daily, weekly, monthly, yearly, and solar cycles. The results reveal t...
논문/REGULAR PAPER

Nov 30, 2024

Compressive Sensing for Jamming Signal Suppression and Restoration in Bistatic SAR
바이스태틱 SAR에서의 재밍 신호 억제와 압축센싱 기반의 신호 복원 및 품질 개선

Min-Ho Choi, He-Woo Lee, Ji-Hoon Choi, Woo-Kyung Lee 최민호, 이희우, 최지훈, 이우경

J. Korean Inst. Electromagn. Eng. Sci. 2024;35(11):929-942.
https://doi.org/10.5515/KJKIEES.2024.35.11.929

Synthetic aperture radar (SAR) is widely used in both civilian and military applications because of its ability to acquire imaging information pertaining to an observed area, regardless of weather conditions. However, it faces the challenge of reduced image quality due to radiofrequency interference (jamming). Recent studies on bistatic SAR, wherein the transmitter and receiver operate independently, have shown that the jamming signal can be weakened during reception because of the varied paths required to reach the receiver. Additionally, grou...
논문/REGULAR PAPER

Nov 30, 2024

Measurement of the AESA Radar Transmit/Receive Module under Simultaneous Transmit/Receive Operation
AESA 레이다용 송수신모듈 송수신 동시 운용 성능 측정

Ho-Yeun Lee, Gil-wong Choi, Pyung-Soon Im, Youngoo Yang 이호연, 최길웅, 임평순, 양영구

J. Korean Inst. Electromagn. Eng. Sci. 2024;35(11):943-950.
https://doi.org/10.5515/KJKIEES.2024.35.11.943

This paper presents a novel measurement method for evaluating the transmit/receive performance of the transmit/receive modules (TRMs) in active electronically scanned array (AESA) radar systems. Conventional TRMs structurally separate the transmitter and receiver, minimizing internal signal interference and simplifying performance verification. However, a recently developed TRM utilizes system-in-package (SiP) to achieve a compact and integrated structure. The transmitter and receiver are integrated, necessitating the verification of the transm...
단편논문/SHORT PAPER

Nov 30, 2024

Cavity-Backed Patch Antenna with Coaxial Line Band-Pass Filter for Nonlinear Radar Receiver
비선형레이다 수신부용 동축선로 대역통과 필터일체형 Cavity-Backed 패치 안테나

Jun Hee Kim, Taeyong Jeong, Keum Cheol Hwang 김준희, 정태용, 황금철

J. Korean Inst. Electromagn. Eng. Sci. 2024;35(11):951-954.
https://doi.org/10.5515/KJKIEES.2024.35.11.951

This paper proposes a cavity-backed patch antenna with a coaxial line band-pass filter for nonlinear radar applications. The proposed antenna operates within the frequency range of 6~6.4 GHz. A seventh-order Chebyshev low-pass filter is incorporated within the coaxial line feed of the cavity-backed patch antenna, and a planar dielectric structure is added in series to achieve a band-pass filter with a suppression of approximately −32 dB in the 3~3.2 GHz range. The measured maximum gain in the operating frequency range and suppression band are...
단편논문/SHORT PAPER

Nov 30, 2024

Self-Harmonic Suppression Algorithms for Effective Detection in Nonlienar FMCW Radar
비선형 FMCW 레이다에서 효과적인 탐지를 위한 자체고조파 억제 알고리즘

Won-Ryeol Lee, Soo-Young Oh, Sun-Ki Hong 이원렬, 오수영, 홍순기

J. Korean Inst. Electromagn. Eng. Sci. 2024;35(11):955-958.
https://doi.org/10.5515/KJKIEES.2024.35.11.955

Nonlinear radars detect electronic targets by capturing weak nonlinear responses from electronic devices and excluding linear objects. However, inducing and capturing these responses require high-power and high-gain amplifiers, which inevitably produce self-generated harmonics. To suppress these harmonics, this study developed a technique that predicts their generation paths and collects look-up table (LUT) data based on the distances to linear objects. The optimal weights for the LUT data were derived using the particle swarm optimization (PSO...
단편논문/SHORT PAPER

Nov 30, 2024

Concealed Target Detection Using S/C Dual-Band Nonlinear Antenna
S/C 이중대역 비선형 안테나를 활용한 은닉표적 탐지

Sooyoung Oh, Wonryeol Lee, Sun-Ki Hong 오수영, 이원렬, 홍순기

J. Korean Inst. Electromagn. Eng. Sci. 2024;35(11):959-962.
https://doi.org/10.5515/KJKIEES.2024.35.11.959

Nonlinear radar systems can detect nonlinear response signals, such as harmonics and intermodulations, generated by nonlinear electronic targets. Typically, nonlinear radar systems use separate antennas for transmit (Tx) and receive (Rx) since they operate at different frequencies. However, to miniaturize the overall system, it is effective to use a dual-band antenna on a single platform. For such antennas, a high isolation between bands is essential to prevent signal interference between the Tx and Rx ports. This paper presents the detection r...

CURRENT ISSUE: Nov 2024, Vol. 35 , No. 11

논문/REGULAR PAPER Design Method of Shared Aperture S/C-Band Array Antenna Based on Thinned Thinned 기반 개구면 공유형 S/C-대역 배열 안테나 설계 기법 Dong Hwan Lee, Taeyong Jeong, Keum Cheol Hwang 이동환, 정태용, 황금철 J. Korean Inst. Electromagn. Eng. Sci. 2024;35(11):857-861. https://doi.org/10.5515/KJKIEES.2024.35.11.857 HTML PDF PubReader	논문/REGULAR PAPER Improving Array Manifold Performance in Direction Finding Multi-Bay Antennas via Bay Spacing Optimization 방향탐지용 멀티 베이 안테나의 어레이 매니폴드 성능 향상 방법 Haeng-Sook Ro, Kang-Hee Kim, Ki-Cheol Tae, Gwang-Moon Park 노행숙, 김강희, 태기철, 박광문 J. Korean Inst. Electromagn. Eng. Sci. 2024;35(11):862-867. https://doi.org/10.5515/KJKIEES.2024.35.11.862 HTML PDF PubReader
논문/REGULAR PAPER Broadband Doherty Power Amplifier Using Out-Phased Current Combining Method and Asymmetric Cells 비대칭 소자와 Out-Phased Current Combining 방식을 사용한 광대역 Doherty 전력증폭기 Jaeseong Song, Sooncheol Bae, Soohyeon Bin, Youngoo Yang 송재성, 배순철, 빈수현, 양영구 J. Korean Inst. Electromagn. Eng. Sci. 2024;35(11):868-879. https://doi.org/10.5515/KJKIEES.2024.35.11.868 HTML PDF PubReader	논문/REGULAR PAPER A 106~133 GHz Wideband Power Amplifier in 40-nm CMOS Process 40-nm CMOS 공정을 이용한 106∼133 GHz 광대역 전력 증폭기 JoonHo Hwang, Munkyo Seo 황준호, 서문교 J. Korean Inst. Electromagn. Eng. Sci. 2024;35(11):880-887. https://doi.org/10.5515/KJKIEES.2024.35.11.880 HTML PDF PubReader
논문/REGULAR PAPER Measurement of Load–Reflection Coefficient Using High-Power, High-Frequency RF Source 고출력 고주파 RF 소스를 이용한 부하의 반사계수 측정 DoKyun Kim, CheaHyean Beak, JinJoo Choi 김도균, 백채현, 최진주 J. Korean Inst. Electromagn. Eng. Sci. 2024;35(11):888-894. https://doi.org/10.5515/KJKIEES.2024.35.11.888 HTML PDF PubReader	논문/REGULAR PAPER Implementation and Measurement of Low-Noise Amplifier Using RF Short-Circuit Capacitor RF 단락 커패시터를 포함하는 고집적 저잡음 증폭기 제작 및 측정 Min-Su Kim 김민수 J. Korean Inst. Electromagn. Eng. Sci. 2024;35(11):895-901. https://doi.org/10.5515/KJKIEES.2024.35.11.895 HTML PDF PubReader
논문/REGULAR PAPER Performance Analysis of Frequency-Invariant Multi-System for Broadband Direction Finding 광대역 방향 탐지를 위한 균일빔 기반 다중시스템 방향탐지 성능 분석 연구 Taeho Yu, Tae-Jung Kim, Byeonggwi Mun, Changho Choi, Gangil Byun 유태호, 김태정, 문병귀, 최창호, 변강일 J. Korean Inst. Electromagn. Eng. Sci. 2024;35(11):902-910. https://doi.org/10.5515/KJKIEES.2024.35.11.902 HTML PDF PubReader	논문/REGULAR PAPER Shielding Model of Single-Braided RF Cable Considering Structural Characteristics of Triaxial Method Triaxial Method의 구조적 특성을 고려한 단일 편조 RF 케이블의 차폐 모델에 대한 연구 Jihyun Yang, Hyun Ho Park, Jiseong Kim, Wansoo Nah 양지현, 박현호, 김지성, 나완수 J. Korean Inst. Electromagn. Eng. Sci. 2024;35(11):911-919. https://doi.org/10.5515/KJKIEES.2024.35.11.911 HTML PDF PubReader
논문/REGULAR PAPER Analysis of Ionospheric Propagation Paths over the Korean Peninsula Based on Three-Dimensional Electron Density Data 3차원 전자밀도 데이터 기반 한반도 상공 전리층 전파 경로 분석 Do Hyeon Lee, Junmo Yang, Sangho Lim, Ik-Hwan Choi, Yong Bae Park 이도현, 양준모, 임상호, 최익환, 박용배 J. Korean Inst. Electromagn. Eng. Sci. 2024;35(11):920-928. https://doi.org/10.5515/KJKIEES.2024.35.11.920 HTML PDF PubReader	논문/REGULAR PAPER Compressive Sensing for Jamming Signal Suppression and Restoration in Bistatic SAR 바이스태틱 SAR에서의 재밍 신호 억제와 압축센싱 기반의 신호 복원 및 품질 개선 Min-Ho Choi, He-Woo Lee, Ji-Hoon Choi, Woo-Kyung Lee 최민호, 이희우, 최지훈, 이우경 J. Korean Inst. Electromagn. Eng. Sci. 2024;35(11):929-942. https://doi.org/10.5515/KJKIEES.2024.35.11.929 HTML PDF PubReader
논문/REGULAR PAPER Measurement of the AESA Radar Transmit/Receive Module under Simultaneous Transmit/Receive Operation AESA 레이다용 송수신모듈 송수신 동시 운용 성능 측정 Ho-Yeun Lee, Gil-wong Choi, Pyung-Soon Im, Youngoo Yang 이호연, 최길웅, 임평순, 양영구 J. Korean Inst. Electromagn. Eng. Sci. 2024;35(11):943-950. https://doi.org/10.5515/KJKIEES.2024.35.11.943 HTML PDF PubReader	단편논문/SHORT PAPER Cavity-Backed Patch Antenna with Coaxial Line Band-Pass Filter for Nonlinear Radar Receiver 비선형레이다 수신부용 동축선로 대역통과 필터일체형 Cavity-Backed 패치 안테나 Jun Hee Kim, Taeyong Jeong, Keum Cheol Hwang 김준희, 정태용, 황금철 J. Korean Inst. Electromagn. Eng. Sci. 2024;35(11):951-954. https://doi.org/10.5515/KJKIEES.2024.35.11.951 HTML PDF PubReader
단편논문/SHORT PAPER Self-Harmonic Suppression Algorithms for Effective Detection in Nonlienar FMCW Radar 비선형 FMCW 레이다에서 효과적인 탐지를 위한 자체고조파 억제 알고리즘 Won-Ryeol Lee, Soo-Young Oh, Sun-Ki Hong 이원렬, 오수영, 홍순기 J. Korean Inst. Electromagn. Eng. Sci. 2024;35(11):955-958. https://doi.org/10.5515/KJKIEES.2024.35.11.955 HTML PDF PubReader	단편논문/SHORT PAPER Concealed Target Detection Using S/C Dual-Band Nonlinear Antenna S/C 이중대역 비선형 안테나를 활용한 은닉표적 탐지 Sooyoung Oh, Wonryeol Lee, Sun-Ki Hong 오수영, 이원렬, 홍순기 J. Korean Inst. Electromagn. Eng. Sci. 2024;35(11):959-962. https://doi.org/10.5515/KJKIEES.2024.35.11.959 HTML PDF PubReader

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