Influence of shielding paint on the combination of building materials for evaulation of shielding effectiveness

Zbojovský, Ján; Pavlík, Marek; Čonka, Zsolt; Kruzelak, Lukas; Kosterec, Michal

doi:10.1109/epe.2018.8395941

Cited by 5 publications

(9 citation statements)

References 7 publications

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“…While the shielding efficiency value is altered, the ratio of R (reflection) and A (absorption) could remain constant. In [4], authors experimented with a combination of shielding paint and some building materials. Specifically, they used polystyrene POLYFORM with a thickness of 5 cm, YSHIELD HSF 64 shielding paint, water, and BauKleber building glue of class C1T.…”

Section: Shielding Of Electromagnetic Fieldmentioning

confidence: 99%

“…The authors concluded that the combination of this type of paint with other materials, especially glue and water, is not suitable and is not recommended. This conclusion suggests that when selecting materials for shielding purposes, it is important to consider their combination, as some combinations can significantly reduce the expected shielding effectiveness [2][3][4].…”

Section: Shielding Of Electromagnetic Fieldmentioning

confidence: 99%

“…The reflected portion continues to travel through the shielding material against the direction of the original incident wave until it again reaches the vacuum/shielding material interface. For simplification, many texts mention [2,4,13] that the reflection coefficient R includes these multiple reflections, meaning the value of R represents the total reflection of the electromagnetic wave. The absorption coefficient can be expressed through modification as [2]:…”

Section: Shielding Of Electromagnetic Fieldmentioning

confidence: 99%

“…where L FTX are the losses between the transmitter output and the transmitting antenna (attenuation in cables, connectors), A AG represents attenuation caused by the atmosphere and ionosphere, A RAIN represents attenuation due to rain and clouds, L POL denotes losses caused by changes in polarization between the transmitting and receiving antennas, L POINT refers to losses caused by inaccurate aiming of the antenna at the satellite, and L FRX represents the losses between the receiving antenna and the receiver input. In the case of the calibration described in this chapter, the components A AG , A RAIN , and L POINT are not applicable [2][3][4]21,22]. In this study, two antennas were used for the measurements-the RF spin DRH18-E (RF spin, Hanspaulka, Czech Republic) and the Rohde & Schwarz HF 907 (Rohde & Schwarz, Munich, Germany)-Figures 4 and 5 The RF spin DRH18-E horn ridge antenna, with a wide frequency range of 1 GHz to 18 GHz, is designed for use in measuring the electromagnetic compatibility of components, in the automotive industry, in radio monitoring, and in military applications.…”

Section: Workplace For Experiments To Measure Shielding Effectivenessmentioning

confidence: 99%

“…The best absorbers include seawater, slate, clays, and graphite. A portion of the microwaves are also absorbed into the ground, while some are reflected, so the nature of exposure in an outdoor environment greatly depends on the geography of the area [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

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The Influence of Various Commonly Used Building Materials on the Shielding Effectiveness, Reflection and Absorption of the Electromagnetic Wave

Pavlík,

Bereš,

Beňa

2024

Applied Sciences

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People spend two-thirds of their time in buildings. Building materials are, therefore, natural shielding for us. Many studies describe the shielding effect of non-building materials. This study evaluates the shielding effectiveness (SE) of electromagnetic fields for various building materials over a frequency range of 1 GHz to 9 GHz. Measurements of SE, reflection (R), and calculated absorption (A) were conducted to determine the shielding properties of mineral wool (MW), hardened polystyrene (PT), extruded polystyrene (PE), polyurethane board (PUR), brick wall (BW), brick wall filled with mineral wool (BW-MW), and concrete wall. The results demonstrate that MW, PT, PE, and PUR exhibit low SE and R, indicating minimal shielding capabilities, with absorption values that do not significantly deviate from the level of measurement uncertainty. Conversely, BW, BW-MW, and concrete wall materials exhibit high SE, with notably increased absorption at higher frequencies, highlighting their potential for effective EMI shielding. Particularly, the concrete wall presents the highest absorption values, making it a superior choice for shielding applications. Reflection trends revealed a plateau for BW in the 6 GHz to 9 GHz range, indicating a frequency-dependent behavior of shielding mechanisms. This study underscores the importance of balancing reflective and absorptive properties in shielding materials and suggests that composite materials may offer enhanced performance. The findings of this research provide guidance for the selection and design of shielding materials in environments with a frequency spectrum of electromagnetic frequencies from 1 GHz to 9 GHz.

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Section: Shielding Of Electromagnetic Fieldmentioning

confidence: 99%

Section: Shielding Of Electromagnetic Fieldmentioning

confidence: 99%

Section: Shielding Of Electromagnetic Fieldmentioning

confidence: 99%

Section: Workplace For Experiments To Measure Shielding Effectivenessmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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