Reconfigurable Grounded Vector Antenna for 3D Electromagnetic Direction Finding Applications

Johan Duplouy (1, 2) , Christophe Morlaas (1) , Hervé Aubert (2) , Philippe Pouliguen (3) , Patrick Potier (4) , Christopher Djoma (5)

1 ENAC - Ecole Nationale de l'Aviation Civile
2 LAAS-MINC - Équipe MIcro et Nanosystèmes pour les Communications sans fil
3 DGA MRIS - DGA Mission Recherche et Innovation Scientifique
4 DGA.MI - DGA Maîtrise de l'information
5 DGA - Direction générale de l'armement [Bagneux]

In this letter, a reconfigurable grounded wideband antenna is proposed in view of vector sensor applications. This antenna combines two orthogonal and colocated semi-circular arrays of Vivaldi antennas mounted over a metallic support. The radiation patterns of two wideband magnetic dipoles and one wideband electric dipole can be synthesized thanks to an appropriate antenna excitation. Measurement results are in good agreement with the simulated results obtained from full-wave electromagnetic simulations. The proposed antenna exhibits stable radiation patterns over a wide impedance bandwidth of 1.69:1, a high radiation efficiency and a good isolation between the antenna input ports. This antenna is a good candidate for wideband 3D direction finding using a vector sensor.

Mots clés: reconfigurable antenna; vector sensor; direction-of- arrival antenna; Vivaldi antennas; wideband magnetic and electric dipoles

Domaines: Electromagnétisme

Johan Duplouy, Christophe Morlaas, Hervé Aubert, Philippe Pouliguen, Patrick Potier, et al.. Reconfigurable Grounded Vector Antenna for 3D Electromagnetic Direction Finding Applications. IEEE Antennas and Wireless Propagation Letters, 2017, ⟨10.1109/LAWP.2017.2779878⟩. ⟨hal-01658238⟩