Effects of Aperture Amount and Offset on Couplings of Strong Electromagnetic Pulse

Xin Ping Zhu; Bing Cao; Cheng Long Liu

doi:10.4028/www.scientific.net/AMM.130-134.1387

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 130-134Effects of Aperture Amount and Offset on Couplings...

Effects of Aperture Amount and Offset on Couplings of Strong Electromagnetic Pulse

Abstract:

Aperture coupling is a main coupling mode through which strong electromagnetic pulse can disturb and even damage electronic equipments. The amount, offset and mixed shape of aperture arrays can affect the coupling effect, which is analyzed using finite-difference time-domain (FDTD) method. The field strength coupled increases with the decrease of the slot amount when the total area of aperture is unchanged. The shielding effectiveness is the smallest when the electromagnetic pulse reaches the resonant frequency, which is only affected by the actual structure size of the shielding cavity. Comparing to two direction offset, the single achieved much larger field strength, which is symmetrical about offset center. The coupled field strength is the smallest when the shape of aperture arrays contains round and rectangular.

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Periodical:

Applied Mechanics and Materials (Volumes 130-134)

Pages:

1387-1390

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.130-134.1387

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Online since:

October 2011

Authors:

Xin Ping Zhu, Bing Cao, Cheng Long Liu

Keywords:

Hole Array, Shielding Effectiveness, Simulation, Strong Electromagnetic Pulse

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