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Communication Dans Un Congrès Année : 2014

A flat-topped leaky-wave source for phased arrays with reduced scan losses

Résumé

This paper describes the design of a planar Fabry-Perot leaky wave antenna generating a flat-topped radiation pattern. The flat-topped pattern is achieved by exciting various leaky-wave modes between a metallic ground plane and a superstrate. Two configurations for the superstrate structure are proposed and analyzed: i) dielectric layers; ii) impedance sheets. In all cases, the antennas are fed by a small waveguide opening in the ground plane. An in-house optimization tool based on a Green's function spectral approach is used to derive the appropriate arrangement for the generation of the required flat-topped pattern. The proposed approach is validated numerically for an antenna generating a flat topped pattern in an angular range of ±25°. The proposed flat-topped antenna may be used for the design of phased arrays with reduced scan losses over a given angular range.
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Dates et versions

hal-01114112 , version 1 (18-12-2015)

Identifiants

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Francesco Scattone, Mauro Ettorre, Ronan Sauleau, N. J. G. Fonseca. A flat-topped leaky-wave source for phased arrays with reduced scan losses. EuCAP 2014, Apr 2014, The Hague, Netherlands. pp.1220 - 1224 ⟨10.1109/EuCAP.2014.6901995⟩. ⟨hal-01114112⟩
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