Abstract
Elektromanyetik ekranlama, elektronik cihazların elektromanyetik yayınımlarını azaltarak ve harici elektromanyetik girişime (EMI) karşı bağışıklıklarını artırarak elektromanyetik uyumluluk (EMC) performanslarını iyileştirmeyi amaçlar. Ekranlama performansı, ekranlama kutusu yokken ve varken ölçülen alan büyüklerinin (elektrik veya manyetik) oranıyla ifade edilen ekranlama etkinliği ile belirlenir. Bu çalışmada, ön panelinde açıklığı olan metalik ekranlama kutusunun manyetik ekranlama etkinliği (MSE) analizi 0-2 GHz aralığında gerçekleştirilmiştir. Açıklığın, ekranlama kutusunun ön panelinin merkezinden üst köşesine taşındığı durumda MSE’de iyileşme elde edilmiştir. Açıklığın, ön panelin üst köşesinde olduğu durumda ekranlama kutusu boyutları, açıklık boyutları ve gözlem noktasındaki değişimlere göre MSE analizleri gerçekleştirilmiştir. Ekranlama kutusu boyutlarındaki artış MSE üzerinde iyileşme sağlarken, açıklık boyutlarındaki artış MSE’yi zayıflatmıştır. Gözlem noktası, açıklıktan uzağa taşındığında ise MSE’nin arttığı elde edilmiştir.
Keywords
Manyetik ekranlama elektromanyetik uyumluluk ekranlama kutusu ekranlama etkinliği açıklık pozisyonu
References
- Ayhan B., Uçak C. Improved magnetic circuit model for magnetic shielding effectiveness in rogowski coil. IEEE Transactions on Magnetics 2020; 56(3): 1-10.
- Basyigit IB., Caglar MF. Investigation of the magnetic shielding parameters of rectangular enclosures with apertures at 0 to 3 GHz. Electromagnetics 2016; 36(7): 434-446.
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- Chen J., Guo J., Tian C. Analyzing the shielding effectiveness of a graphene-coated shielding sheet by using the HIE-FDTD method. IEEE Transaction on Electromagnetic Compatibility 2018; 60(2): 362-367.
- Cerri G., Chiarandini S., Russo P., Schiavoni A. Electromagnetic coupling between arbitrarily bent wires and scatters analysed by a hybrid MoMTD/FDTD approach. IEE Proceedings – Microwave, Antennas and Propagation 2000; 147(4): 261-266.
- Cerri G., Deleo R., Primiani VM. Theoretical and experimental evaluation of the electromagnetic radiation from apertures in shielded enclosure. IEEE Transactions on Electromagnetic Compatibility 1992; 34(4): 423-432.
- D’Amore M., De Santis V., Feliziani M. Magnetic shielding of apertures loaded by resistive coating. IEEE Transactions on Magnetics 2010; 46(8): 3341-3344.
- Edrisi M., Khodabakhshian A. Simple methodology for electric and magnetic shielding effectiveness computation of enclosures for electromagnetic compatibility use. Journal of Electromagnetic Waves and Applications 2006; 20(8): 1051-1060.
- Feng C., Shen Z. A hybrid FD-MoM technique for predicting shielding effectiveness of metallic enclosures with apertures. IEEE Transactions on Electromagnetic Compatibility 2005; 47(3): 456-462.
- Frikha A., Bensetti M., Duval F., Benjelloun N., Lafon F., Pichon L. A new methodology to predict the magnetic shielding effectiveness of enclosures at low frequency in the near field. IEEE Transactions on Magnetics 2015; 51(3): 8000404.
Abstract
Electromagnetic shielding aims to improve electromagnetic compatibility (EMC) performance of electronic devices by reducing electromagnetic emissions and increasing their immunity against external electromagnetic interference (EMI). Shielding performance is determined by shielding effectiveness, expressed as the ratio of measuring field magnitudes (electric or magnetic) with and without the shielding enclosure. In this study, magnetic shielding effectiveness (MSE) analysis of metallic shielding enclosure with an aperture on the front panel is performed in 0-2 GHz range. Improvement on MSE is obtained when the aperture is moved from the center to the top corner of the front panel of the shielding enclosure. In case of locating the aperture at the top corner of the front panel, MSE analyzes are carried out according to the changes on shielding enclosure dimensions, aperture dimensions and observation point. While the increase on shielding enclosure dimensions improves MSE, the increase on aperture dimensions attenuates MSE. It is obtained that MSE increases when the observation point is moved away from the aperture.
Keywords
Magnetic shielding electromagnetic compatibility rectangular enclosure shielding effectiveness aperture position
References
- Ayhan B., Uçak C. Improved magnetic circuit model for magnetic shielding effectiveness in rogowski coil. IEEE Transactions on Magnetics 2020; 56(3): 1-10.
- Basyigit IB., Caglar MF. Investigation of the magnetic shielding parameters of rectangular enclosures with apertures at 0 to 3 GHz. Electromagnetics 2016; 36(7): 434-446.
- Basyigit IB., Caglar MF., Helhel S. Magnetic shielding effectiveness and simulation analysis of metalic enclosures with apertures. 9th International Conference on Electrical and Electronics Engineering (ELECO); 26-28 November 2015, Bursa, Turkey.
- Chen K., Gao M., Zhou X. A model for the prediction of the shielding effectiveness of cylindrical enclosure. AIP Advances. 2022; 12(8): 1-10.
- Chen J., Guo J., Tian C. Analyzing the shielding effectiveness of a graphene-coated shielding sheet by using the HIE-FDTD method. IEEE Transaction on Electromagnetic Compatibility 2018; 60(2): 362-367.
- Cerri G., Chiarandini S., Russo P., Schiavoni A. Electromagnetic coupling between arbitrarily bent wires and scatters analysed by a hybrid MoMTD/FDTD approach. IEE Proceedings – Microwave, Antennas and Propagation 2000; 147(4): 261-266.
- Cerri G., Deleo R., Primiani VM. Theoretical and experimental evaluation of the electromagnetic radiation from apertures in shielded enclosure. IEEE Transactions on Electromagnetic Compatibility 1992; 34(4): 423-432.
- D’Amore M., De Santis V., Feliziani M. Magnetic shielding of apertures loaded by resistive coating. IEEE Transactions on Magnetics 2010; 46(8): 3341-3344.
- Edrisi M., Khodabakhshian A. Simple methodology for electric and magnetic shielding effectiveness computation of enclosures for electromagnetic compatibility use. Journal of Electromagnetic Waves and Applications 2006; 20(8): 1051-1060.
- Feng C., Shen Z. A hybrid FD-MoM technique for predicting shielding effectiveness of metallic enclosures with apertures. IEEE Transactions on Electromagnetic Compatibility 2005; 47(3): 456-462.
- Frikha A., Bensetti M., Duval F., Benjelloun N., Lafon F., Pichon L. A new methodology to predict the magnetic shielding effectiveness of enclosures at low frequency in the near field. IEEE Transactions on Magnetics 2015; 51(3): 8000404.
Details
| Primary Language | Turkish |
|---|---|
| Subjects | Electrical Engineering |
| Journal Section | RESEARCH ARTICLES |
| Authors | |
| Publication Date | January 22, 2024 |
| Submission Date | May 27, 2023 |
| Acceptance Date | September 18, 2023 |
| Published in Issue | Year 2024 Volume: 7 Issue: 1 |
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