Electromagnetic Wave Shielding Effectiveness Measurement Method of EMP Protection Facility

서만중,; 지성원,; 김영진,; 박우철,; 강호재,; 허창수,

doi:10.5515/kjkiees.2014.25.5.548

Cited by 11 publications

(3 citation statements)

References 2 publications

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“…The impedance values of the load can vary depending on the frequency of an incident wave. In the case of a quadcopter drone, because the physical parameters of the 2-wire (i.e., s and L) are fixed, the electrical parameters R S and R L , as well as the frequency of the incident wave, affect the induced voltage as shown in Equations ( 1) and (2). Field-to-circuit coupling is also possible in the transmission lines of the main PCB [21].…”

Section: A Wire Coupling Pathmentioning

confidence: 99%

“…The potential damage to social infrastructure caused by HPEM attacks is significant [1]. Therefore, sensitive electronic devices and systems should be designed by using various shielding technologies with an aim to prevent possible damage from external electromagnetic (EM) waves [2]. The degree of influence of an EM wave varies based on the type of target electronic device.…”

Section: Introductionmentioning

confidence: 99%

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Electromagnetic Signature of a Quadcopter Drone and Its Relationship With Coupling Mechanisms

et al. 2019

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This paper presents an investigation of the electromagnetic signature and the coupling mechanism of quadcopter drones with incident electromagnetic (EM) wave and radar cross section (RCS) analysis. Coupling analysis is performed based on the dominant coupling path: when an incident EM wave with a magnitude of 50 kV/m contacts a commercial quadcopter drone, its motor power wires are identified as the dominant coupling path. Higher coupling voltages are obtained for frequencies that have large impedance values at both ends of the load on the motor power wire. This induced voltage can affect the integrated circuit chip on a printed circuit board, as well as parallel plate resonances. Furthermore, the RCS of a quadcopter drone is measured in the frequency range of 0.5-3 GHz. The internal-component vulnerability characteristics of quadcopters can spike at specific frequencies with high RCS values and can be analyzed with or without motor power wires. We verified these hypotheses via 2D inverse synthetic aperture radar images, and we analyzed the results by comparing the empirical and full-wave simulation values.INDEX TERMS Coupling analysis, input impedance, inverse synthetic aperture radar, parallel plate resonance, quadcopter drone, radar cross section, vulnerable path, wire coupling.

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Section: A Wire Coupling Pathmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Electromagnetic Signature of a Quadcopter Drone and Its Relationship With Coupling Mechanisms

et al. 2019

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“…For the construction of the shielding room, metal plates are welded or assembled by bolts to each other. However, this method has shown a difficulty in manufacturing as follows: a possibility of EMP inflow through welded parts, and expensive construction costs [ 26 ]. To solve this problem, developing a new EMP shielding method to replace the metal plate is required.…”

Section: Introductionmentioning

confidence: 99%

Study on the Shielding Effectiveness of an Arc Thermal Metal Spraying Method against an Electromagnetic Pulse

et al. 2017

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An electromagnetic pulse (EMP) explodes in real-time and causes critical damage within a short period to not only electric devices, but also to national infrastructures. In terms of EMP shielding rooms, metal plate has been used due to its excellent shielding effectiveness (SE). However, it has difficulties in manufacturing, as the fabrication of welded parts of metal plates and the cost of construction are non-economical. The objective of this study is to examine the applicability of the arc thermal metal spraying (ATMS) method as a new EMP shielding method to replace metal plate. The experimental parameters, metal types (Cu, Zn-Al), and coating thickness (100–700 μm) used for the ATMS method were considered. As an experiment, a SE test against an EMP in the range of 103 to 1010 Hz was conducted. Results showed that the ATMS coating with Zn-Al had similar shielding performance in comparison with metal plate. In conclusion, the ATMS method is judged to have a high possibility of actual application as a new EMP shielding material.

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Measurements and Standards

2021

Two‐Dimensional Materials for Electromagnetic Shielding

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Electromagnetic Wave Shielding Effectiveness Measurement Method of EMP Protection Facility

Cited by 11 publications

References 2 publications

Electromagnetic Signature of a Quadcopter Drone and Its Relationship With Coupling Mechanisms

Electromagnetic Signature of a Quadcopter Drone and Its Relationship With Coupling Mechanisms

Study on the Shielding Effectiveness of an Arc Thermal Metal Spraying Method against an Electromagnetic Pulse

Measurements and Standards

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