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A fast multiple mode intermediate level circuit model for the prediction of shielding effectiveness of a rectangular box containing a rectangular aperture.

Konefal, T., Dawson, J.F., Marvin, A.C., Robinson, M.P. and Porter, S.J. (2005) A fast multiple mode intermediate level circuit model for the prediction of shielding effectiveness of a rectangular box containing a rectangular aperture. IEEE Transactions on Electromagnetic Compatibility, 47 ( 4). pp. 678-691. ISSN 0018-9375

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Abstract

This paper presents an intermediate level circuit model (ILCM) for the prediction of the shielding effectiveness (SE) of a rectangular box containing a rectangular aperture, irradiated by a plane wave. The ILCM takes into account multiple waveguide modes, and is thus suitable for use at high frequencies and/or relatively large boxes. Inter-mode coupling and reradiation from the aperture are taken into account. The aperture may be positioned anywhere in the front face of the box, and the SE at any point within the box may be found. The model is presented in such a way that existing ILCM techniques for modelling elements such as monopoles, dipoles, loops, or transmission lines may be seamlessly incorporated into the circuit model. Solution times using the ILCM technique are three orders of magnitude less than those required by traditional numerical methods such as FDTD, TLM, or MoM. Accuracy however is not significantly compromised. Comparing the circuit model with TLM over nine data sets from 4 MHz to 3 GHz resulted in an rms difference of 7.70 dB and mean absolute difference of 5.55 dB in the predicted SE values.

Item Type: Article
Institution: The University of York
Academic Units: The University of York > Electronics (York)
Depositing User: York RAE Import
Date Deposited: 15 May 2009 10:11
Last Modified: 15 May 2009 10:11
Published Version: http://dx.doi.org/10.1109/TEMC.2005.853715
Status: Published
Publisher: IEEE Institute of Electrical and Electronics
Identification Number: 10.1109/TEMC.2005.853715
URI: http://eprints.whiterose.ac.uk/id/eprint/6379

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