463 hasil
Menampilkan 1–20 · 0,09 detik · RSS
Journal of Electromagnetic Engineering and Science
Scopus
ISSN 2671-7255 · The Korean Institute of Electromagnetic Engineering and Science · 463 artikel di indeks
-
Artikel Jurnal Teks lengkap
Experimental Verification of Simulated Spectral Fluctuations of Unintended Electromagnetic Emissions from Electric Vehicles
The measurement of unintended electromagnetic emissions from vehicles is both costly and time-consuming, making real data acquisition challenging. In addition, the inherent complexity of vehicle modeling significantly affects the accuracy of simulations. Given this context, this letter proposes…
-
Artikel Jurnal Teks lengkap
Analysis of Radio Communication Coverage Using Path Loss and Digital Elevation Models in Various Propagation Environments
This paper proposes a method for analyzing propagation environments using terrain information and for predicting the communication coverage between a control tower and airborne platforms. This method involves collecting terrain data and implementing it in a Wireless InSite simulator. Digital…
-
Artikel Jurnal Teks lengkap
Designing Multilayered Electromagnetic Absorbers with Machine Learning
This work presents a generative machine learning model that predicts upper graphene element configurations for a multilayer flexible electromagnetic absorber. The model uses the lower graphene layer as input and S-parameters as conditional input. It is increasingly difficult to fabricate multilayer…
-
Artikel Jurnal Teks lengkap
Location Variability Confidence Interval Model Using Statistical Inference for Over-rooftop Paths and Signal Data Classification Method
In this paper, statistical inference is used to predict a practical linear equation for determining signal loss rates over distance in a suburban over-rooftop path under both line-of-sight (LoS) and non-line-of-sight (NLoS) conditions. Unlike existing prediction equations, the proposed model…
-
Artikel Jurnal Teks lengkap
Simulation and Equivalent Circuit Modeling of Two-Dimensional Thin Films: Exploring MoS-Graphene Heterostructure for Wi-Fi Band Application
This work introduces a simulation-driven framework for reliably reproducing experimental trends pertaining to two-dimensional thin films, thus rendering advanced heterostructure research feasible for facilities without sophisticated equipments. Zhang and his colleagues fabricated a molybdenum…
-
Artikel Jurnal Teks lengkap
Dual Linearly Polarized Wide Beamwidth Antenna for Private-5G Supportive MIMO Applications
This paper presents a dual linearly polarized planar antenna element optimized for private 5G applications in the 4.6–4.9 GHz frequency band, targeting Korea’s 4.7 GHz allocation. Wide beamwidth antenna elements are increasingly critical in private 5G (P5G) networks to simplify base station…
-
Artikel Jurnal Teks lengkap
Bi-stage Genetic Algorithm-Based Self-Interference Removal System for Antenna-less Backscatter Communication
This paper presents an efficient method for removing self-interference (SI) in antenna-less backscatter communication systems that generate two distinct modulated signal states. The performance of monostatic backscatter systems is significantly degraded by strong SI from the transmitter leaking…
-
Artikel Jurnal Teks lengkap
A Quantitative Electromagnetic Immunity Evaluation Method for Display Devices Based on Pixel and Frame Error Detection
In this paper, a quantitative evaluation method that uses near-field noise injection testing to assess the electromagnetic immunity of display devices is proposed. The proposed method identifies electromagnetic immunity vulnerabilities within systems through near-field emission measurements by…
-
Artikel Jurnal Teks lengkap
Computationally Efficient Short-Range 3D SAR Imaging via Modified Augmented Lagrangian-Based FA-ADMM and Deep Learning Models
Short-range three-dimensional (3D) synthetic aperture radar (SAR) imaging has drawn significant attention across various domains, including security surveillance, non-destructive testing, and medical diagnostics. This paper introduces a fast adaptive alternative direction method of multipliers…
-
Artikel Jurnal Teks lengkap
Beam-Switching Antenna Array Using Rotman Lens for Railway Communication at 28 GHz
In this paper, a multibeam antenna without a phase shifter is designed for railway communications in the upper 5G band (28 GHz). Railway turning angles can reach up to −20° to 20° depending on line geometry and train speed. Based on the curvature of railway tracks in realistic scenarios, the…
-
Artikel Jurnal Teks lengkap
Ultra-Wideband Antipodal Vivaldi Antenna Design with Gain Enhancement by the Application of Multiple Bar Shaped Longitudinal Patches
This paper presents a method of introducing novel bar shaped multiple patches to enhance the gain of the often-ignored North Atlantic Treaty Organization (NATO) radio frequencies E-band, that is from 2–3 GHz while maintaining high gain through the entire bandwidth of the antenna. The patches are…
-
Artikel Jurnal Teks lengkap
Real-Vehicle Electromagnetic Compatibility Evaluation of V2X Communication Equipment
This paper presents a real-vehicle electromagnetic compatibility (EMC) evaluation method for dual-mode vehicle-to-everything (V2X) systems supporting WAVE and LTE-V2X. Unlike conventional EMC tests that are limited to assessing regulatory compliance, the proposed method quantifies the effects of…
-
Artikel Jurnal Teks lengkap
Erratum to “Investigation of Insertion Loss in Inkjet-Printed Coplanar Waveguide Based on Drying Temperature”
-
Artikel Jurnal Teks lengkap
Frequency-Unconstrained High-Realizability Design of a Dual-Band Harmonic-Controlled Rectifier Based on Branch-Line Coupling Structure
This paper presents a novel methodology for designing a high-efficiency dual-band (DB) rectifier with harmonic control characterized by simple realizability and high flexibility of frequency. The proposed structure features two distinct rectifier branches, each intentionally optimized to operate at…
-
Artikel Jurnal Teks lengkap
Electromagnetic Coupling Analysis of an Indoor Electronic Device Model Using Huygens’ Box-Based Electromagnetic Topology Method
When an electronic device featuring an enclosure and an internal PCB is located inside a building, analyzing the coupling phenomenon resulting from external high-power electromagnetic waves at specific locations on the PCB using conventional commercial simulation tools requires significant…
-
Artikel Jurnal Teks lengkap
Vehicle Classification Using Electromagnetic Leakage Signals Based on Feature Fusion and Residual CNN
While the classification of electromagnetic (EM) leakage signals from various electronic devices has been explored in recent research, the use of EM leakage signals from vehicles for classification tasks remains relatively underexplored. In this study, we simulate EM leakage signals from the…
-
Artikel Jurnal Teks lengkap
3D-Printed Waveguide Bandpass Filter with Locally Resonant Cross-Shaped Metamaterial for Improved Out-of-Band Rejection
This paper presents a waveguide bandpass filter (BPF) consisting of locally resonant cross-shaped metamaterial for improved out-of-band rejection. The proposed metamaterial unit cell, which is included in the waveguide’s filter section, induces increased capacitive stored electric energy density…
-
Artikel Jurnal Teks lengkap
Enhanced-Isolation Dual-Polarized Aperture-Fed Patch Antenna with Air Cavity for 5G Communication
This paper proposes a method to enhance the bandwidth and port isolation characteristics of a dual-polarization patch antenna using an aperture-coupled feeding structure with isolation vias. Initially, a feeding structure composed of a stripline integrated with a transformer is considered. A…
-
Artikel Jurnal Teks lengkap
Ultra-Wideband Asymmetric Impedance Transformer Design for High-Power Amplifier MMICs
In this study, an asymmetric impedance transformer is proposed for broadband high-power amplifier (HPA) monolithic microwave-integrated circuits (MMICs). The design adopts an asymmetrical coupled line structure as the bias circuit to supply the large drain current required by the HPA. The formula…
-
Artikel Jurnal Teks lengkap
Impedance-Modulating Patch Integration for Gain and Bandwidth Control of Antenna-in-Display in Millimeter-Wave Smartphones
In this study, an impedance-modulating patch (IMP) antenna-in-display (AiD) scheme is introduced to enable on-demand modification of the antenna operating frequency, bandwidth, and gain by selectively laminating a film with a printed IMP onto a pre-designed AiD. By adjusting the integration…