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Efficient evaluation of reaction integrals in the EFIE analysis of planar layered structures with uniaxial anisotropy

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3 Author(s)
Mesa, F. ; Dept. of Appl. Phys., Seville Univ., Spain ; Plaza, G. ; Medina, F.

This paper presents an efficient implementation of the electric-field integral-equation (EFIE) method to deal with planar anisotropic layered printed structures. A convenient treatment of the kernel of the integral equation gives rise to reaction integrals that only involve quasi-singularities and R-1-type singularities. When the well-known Rao-Wilton-Glisson triangular basis functions are used in conjunction with the Galerkin's method, closed-form expressions are found for the singular parts of the self-reaction integrals, as well as for the inner convolution integrals of the remaining singular/quasi-singular reaction integrals. Thus, the present procedure sets the EFIE method as a competitive alternative to other formulations

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Microwave Theory and Techniques, IEEE Transactions on  (Volume:50 ,  Issue: 9 )