Multiband Pyramidal Antenna Loaded With a Cutoff Open-Ended Waveguide

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]

An original and flexible pyramidal antenna for satellite or terrestrial application services is presented. The ground plane of the antenna is perforated and loaded with a cutoff open-ended waveguide: this original configuration leads to a good tradeoff between rear radiation and impedance matching. Trap-loads are used to achieve multiband operation while frequency agility may be simply obtained by loading the radiating element by radio-frequency switches. The antenna radiates linearly or circularly polarized electromagnetic fields with quasi-hemispheric radiation patterns at multiple operating frequencies. Several prototypes have been simulated, manufactured, and finally measured. A specific application is given in this paper for a triband GPS/Galileo/MicroSat Telemetry antenna to combine positioning and telemetry applications. The experimental results confirm the good performances observed with the electromagnetic simulations.

Mots clés: GPS/Galileo/MicroSAT telemetry services; Cutoff waveguide loading; trap-loads; trap-loads.; multiband antenna; pyramidal structure

Domaines: Electronique

Sami Hebib, Hervé Aubert, Olivier Pascal, Nelson Fonseca, Lionel Ries, et al.. Multiband Pyramidal Antenna Loaded With a Cutoff Open-Ended Waveguide. IEEE Transactions on Antennas and Propagation, 2009, 57 (1), pp. 266 - 270. ⟨10.1109/TAP.2008.2009778⟩. ⟨hal-00432957⟩