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Journal of the Korean Institute of Electromagnetic and Science 2006;6(2):130-134.
Reduction Characteristics of Electromagnetic Penetration through Narrow Slots in Conducting Screen
Eun-Jung Park, Ki-Chai Kim
Department of Electrical Engineering, College of Engineering, Yeongnam University
This paper presents the reduction characteristics of penetrated electromagnetic fields through a narrow slot in a planar conducting screen of infinite extent. When a plane wave is excited to the narrow slot, the aperture electric field is controlled by the parallel wire or parallel plate connected on the slot. The magnitude of penetrated electromagnetic fields through a narrow slot is controlled by electric field distributions on the slot. An integral equation for the aperture electric field on narrow slots is derived and solved by applying Galerkin's method of moments. The results show that the magnitude of the penetrated electromagnetic field can be effectively reduced by installing the parallel wire or parallel plate on the slot.
Key words: Reduction of Electromagnetic Fields, Narrow Slot, Parallel Wire, Parallel Plate


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