Reconfigurable pyramidal antenna loaded by a cut-off waveguide-application to ARNS/RNSS services

Sami Hebib (1) , Hervé Aubert (1) , Olivier Pascal (2) , Nelson Fonseca (3) , Lionel Ries (3) , Jean-Marc Lopez (3)

1 LAAS-MINC - Équipe MIcro et Nanosystèmes pour les Communications sans fil
2 LAPLACE-GRE - Groupe de Recherche en Electromagnétisme
3 CNES - Centre National d'Études Spatiales [Toulouse]

A novel reconfigurable and circularly polarized antenna topology for satellite application services, based on a pyramidal geometry, is proposed. Frequency agility is simply obtained by loading the radiating elements by Radio-Frequency switches. The ground plane of the antenna is perforated and loaded by a cut-off and open-ended waveguide. The length of this waveguide is adjusted to achieve a good trade-off between rear radiation and impedance matching. A specific application of this original topology is described in this paper. It consists in the design of a reconfigurable dual-band antenna for Aeronautical Radio Navigation Services (ARNS) and Radio Navigation Satellite Services (RNSS). The computed input return loss is lower than -10 dB in all the considered frequency bands and quasi-hemispheric radiation patterns are obtained. These results are in good agreement with the required Radio Navigation specifications.

Domaines: Electronique

Sami Hebib, Hervé Aubert, Olivier Pascal, Nelson Fonseca, Lionel Ries, et al.. Reconfigurable pyramidal antenna loaded by a cut-off waveguide-application to ARNS/RNSS services. The 3rd European Conference on Antennas and Propagation (EuCAP09), Mar 2009, Berlin, Germany. pp. 1882 - 1885. ⟨hal-00430535⟩