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An incremental `add-on' approach to determining the effect of modification of the geometry of a thin plate on its electromagnetic scattering properties

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2 Author(s)
R. Kastner ; Dept. of Electr. & Comput. Eng., Illinois Univ., Urbana, IL, USA ; R. Mittra

The problem of rapid estimation of the effect of perturbing a thin plate structure is addressed using the add-on technique that was introduced recently by R. Kastner (see ibid., vol.37, p.353-61, 1989). An important feature of this method is its ability to make efficient use of previously computed results for the current distribution on a portion of the scatterer that remains unchanged as the geometry of the plate is modified. The procedure, which has been successfully applied to large irregular strip arrays and to a class of planar geometries that introduce negligible cross-polarization effects in the scattering process, is extended in this work to apply to arbitrary plates. In order to demonstrate the versatility of the method, numerical results are given for a number of plate geometries, including one with apertures

Published in:

IEEE Transactions on Antennas and Propagation  (Volume:38 ,  Issue: 11 )