62 research outputs found

    Incurvamenti congeniti del pene: trattamento chirurgico.

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    3nonenonePonchietti R.; Raugei A.; Nannetti G.L.Ponchietti, Roberto; Raugei, A.; Nannetti, G. L

    A pole matching method for the analysis of frequency selective surfaces

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    In this work, a pole matching method is presented for the analytical reconstruction, from full-wave data, of the scattering properties of frequency selective surfaces (FSS). This method allows one to synthesize the scattering response of an FSS from the identification of a few parameters, which exhibits a weak dependence with respect to the angle of incidence. This property implies that the full-wave analysis of the FSS can be performed for a limited set of incidence directions, from which the overall response can be obtained by a simple and numerically efficient algorithm. The final outcome is an analytical form for the scattering matrix which may be conveniently used in ray-tracing algorithms, based on local flat-surface approximations of curved FSS

    Analysis of dispersion in dipole-FSS loaded hard rectangular waveguide

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    We investigate the properties of the dipole frequency selective surfaces-loaded rectangular waveguide. The analysis is carried out by using the method of moments together with an algorithm that solves for a multilayer structure in the spectral domain. The eigenmodes are determined by searching for resonant solutions. Dispersion diagrams obtained from this approach are compared with those generated by commercial software simulations. Experimental validation is also performed. \ua9 2006 IEEE
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