Synthesis of Smooth Wall Compact and Light- Weight Circular Horns Using the BoR-FDTD Method

Konferenz: EuCAP 2009 - 3rd European Conference on Antennas and Propagation
23.03.2009 - 27.03.2009 in Berlin, Germany

Tagungsband: EuCAP 2009

Seiten: 4Sprache: EnglischTyp: PDF

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Rolland, Anthony; Sauleau, Ronan; Drissi, M’Hamed (IETR, UMR CNRS 6164, University of Rennes 1, 35042 Rennes Cedex, France)
Person, Christian (LabSTICC, UMR CNRS 3192, Télécom Bretagne, 29238 Brest Cedex 3, France)

We describe in this paper a reliable, fast and accurate design tool for the analysis, optimisation and synthesis of axis-symmetrical antennas of arbitrary shape and constitutive materials. It is based on the combination of a FDTD kernel expressed in cylindrical coordinates with gradient methods, and binary- and real-coded genetic algorithms. To validate the numerical algorithms, several compact light-weight circular horns have been designed and compared in Ka-band. The use of metallised foam enables one to integrate phase correction lenses into the horn aperture in order to enhance the antenna gain while keeping a small size.