Comparison of impedance matching parameters of a pyramidal horn antenna by insertion of organic dielectric slabs

Abstract

A comparison of impedance matching parameters from 6.565 to 13 GHz was performed when samples of agricultural wastes as Opuntia Ficus-Indica cladodes, Agave Atrovirens branches and Cocos Nucifera L. husk were inserted at the flare section of a pyramidal horn antenna. S11, VSWR, and impedance were measured and compared to evaluate antenna performance in the presence of them and in order to develop low-cost and eco-friendly devices for antenna matching and other electronics purposes. Particularly, Cocos Nucifera L. husk had the most appropriate features in terms of impedance matching, offering average values of |S11|, VSWR and |Z| of 0.229, 1.871 and 57.647 Ω respectively.