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ILASH – Design and Analysis tool for Double-Shell Axial-Symmetric Integrated Lens Antennas

Costa, J.R. ; Silveirinha, M. G. ; Fernandes, C. A. ; Lima, E.B. ; Tiago, J.

ILASH – Design and Analysis tool for Double-Shell Axial-Symmetric Integrated Lens Antennas, Proc Conf. on Telecommunications - ConfTele, Tomar, Portugal, Vol. 1, pp. - , April, 2005.

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Abstract
This paper presents the design of a double-shell shaped axial-symmetric lens intended for space applications, as an example of the capabilities of the lens design tool – ILASH – that is being developed at Instituto de Telecomunicações under contract for the European Space Agency. An initial lens shape is obtained using a Geometric Optics (GO) formalism subject to a Gaussian output radiation pattern template. This profile is then optimized using Genetic Algorithm (GA) combined with the classical Geometric Optics + Physical Optics (GO/PO) approach. The paper discusses the performance of the obtained lens, while showing how ILASH tool can be used.