Efficiency measurement of UWB and UHF antennas in small cavities of arbitrary shape

Jean François Pintos , Sylvain Guivarch , Ali Louzir , Christophe Lemoine (1) , Gwenn Le Fur (2) , Philippe Besnier (1) , Ala Sharaiha (1)

1 IETR - Institut d'Électronique et des Technologies du numéRique
2 IETR - Institut d'Electronique et de Télécommunications de Rennes

A new method that extends the application of spherical Wheeler cap to relatively small cavities of any shape is presented for radiation efficiency estimation. We introduce a modified Huynh formulation to take into account cavity losses when they are non-negligible for high frequencies. These assumptions are consistent with experimental results, which are based on antenna measurements in cubic cavities and for different frequency bands.

Mots clés: reverberation chamber; efficiency measurement; UWB antenna; Wheeler cap; Huynh method

Domaines: Traitement du signal et de l'image [eess.SP]; Traitement du signal et de l'image [eess.SP]

Jean François Pintos, Sylvain Guivarch, Ali Louzir, Christophe Lemoine, Gwenn Le Fur, et al.. Efficiency measurement of UWB and UHF antennas in small cavities of arbitrary shape. Microwave and Optical Technology Letters, 2009, 51 (9), pp.2193-2196. ⟨hal-00401634⟩