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Application of finite-integral technique to electromagnetic scattering by two-dimensional cavity-backed aperture in a ground plane

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3 Author(s)
Rao, S.M. ; Dept. of Electr. Eng., Auburn Univ., AL, USA ; Gothard, G.K. ; Wilton, D.R.

We analyze the electromagnetic scattering by a cavity-backed two-dimensional (2-D) aperture in a ground plane illuminated by either a TE or TM plane wave. The analysis is based on the well-known generalized network formulation. To obtain the admittance matrix of the cavity, the cavity is modeled by triangular cylinders. Also, in order to specify inhomogeneous materials, a separate ε and μ may be assigned to each cylinder. Further, the cavity is analyzed by applying the finite-integral technique (FIT), which results in a spurious-free solution. Finally, numerical examples are presented to illustrate the applicability of the method

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Antennas and Propagation, IEEE Transactions on  (Volume:46 ,  Issue: 5 )