Analysis of Antenna Radiation Patterns by Means of Spherical Wavelets

Alice Quennelle (1) , Alexandre Chabory (1) , Philippe Pouliguen (2) , Romain Contreres (3) , Gwenn Le Fur (3)

1 TELECOM - ENAC - Equipe télécommunications
2 DGA.MI - DGA Maîtrise de l'information
3 CNES - Centre National d'Études Spatiales [Toulouse]

A new tool for analysing antenna radiation patterns is proposed in this article. This tool consists in applying a spherical wavelet transform to the radiation which is assumed to be known on a regular spherical-coordinates grid. This is an alternative solution to usual plane-waves or spherical harmonic expansions. The interest of using wavelets is to obtain a better analysis in terms of localization in position and/or direction. The direct link between spherical wavelets and spherical harmonics is also highlighted. The properties of this tool are illustrated by means of numerical experiments performed on two typical antennas, a canonical aperture and a pyramidal horn.

Mots clés: wavelets; antennas; radiation pattern; multiresolution analysis

Domaines: Physique [physics]

Alice Quennelle, Alexandre Chabory, Philippe Pouliguen, Romain Contreres, Gwenn Le Fur. Analysis of Antenna Radiation Patterns by Means of Spherical Wavelets. European Conference on Antennas and Propagation, Mar 2022, Madrid, Spain. ⟨hal-03776205⟩