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This paper investigates the properties of Sierpinski gasket fractal aperture in a rectangular waveguide, in a conducting screen and as waveguide-fed slot antenna. The problem of multiple aperture coupling is solved using method of moments with RWG functions. A self-affine gasket geometry with a scale factor of 1.25 has been proposed for the rectangular waveguide problems. The fractal apertures show...
In this paper, a method for obtaining the generalized scattering matrix coefficients of both the propagating and evanescent modes of waveguide discontinuities is presented. The method is based on the modal expansion of field distributions obtained from Transmission Line Matrix (TLM) simulations and use of the orthogonality principle to quantify the presence of specific modes. Using this approach,...
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