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Corrugated surfaces have been commonly used to design antennas with low cross polarization or chokes to reduce coupling. Recently, soft and hard surfaces have found novel applications due to its ability to control propagation in a desired way. One of these applications is an oversized waveguide with one single hard wall; from now on Single-Hard-Wall Waveguide (SHWW). This waveguide was first presented...
An efficient and accurate moment method analysis of a parallel-plate waveguide with one single hard wall using the aperture integral equation (AIE) and the CG-FFT method is presented. This approach is perfectly applicable to new realizations of soft/hard surfaces apart from the classical corrugations. A realization of this waveguide with classical corrugations has been analyzed here. The results corroborate...
This communication describes a method of moments formulation to analyze the scattering from corrugated surfaces. The approach is based on the aperture integral equation. Such approach decouples the analysis of the impedance effect of the grooves from the external coupling among grooves and allows us to deal accurately with grooves of any shape. Advantage is taken of the geometrical properties of the...
An oversized rectangular waveguide with one hard wall was previously demonstrated to be suitable for feeding a planar slot array because it has higher-order-mode-killing properties, i.e. it supports propagation of a single quasi-TEM parallel-plate-type mode, and no higher order modes. In the present paper we detect instead many local quasi-TEM waves that follow the hard surface with identical propagation...
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