Ultra-wideband DRA Integrated with Narrow-band Slot Antenna

Auteurs :  I. Messaoudene, T. A. Denidni, A. Benghalia
Année : 2014
Domaine : Electronique
Type : Article de journal
Revue : Electronics Letters
Résumé en PDF :  (résumé en pdf)
Fulltext en PDF :  (.pdf)
Mots clés : ultra-wideband (UWB) antenna, Integrated antenna, DRA

Résumé : 

A new ultra-wideband (UWB) antenna integrated with a narrow-band (NB) antenna has been designed and fabricated. The UWB antenna consists of a U-shaped dielectric resonator fed by a microstrip line. In addition, the proposed structure integrates an NB slot with the same polarization. The electromagnetic analysis is carried out by using two commercial software tools. To validate the proposed concept, experimental measurements have also been performed. The measured results show that the dielectric resonator antenna (DRA) provides a wide bandwidth from 2.94 to 11.34 GHz (covering the UWB spectrum, 3.1–10.6 GHz) while the slot antenna provides a 2:1 voltage standing wave ratio bandwidth for 5.71–6.13 GHz. Moreover, the proposed design allows an efficient integration with very good isolation between the two ports (transmission coefficient S21 <−20 dB in the whole operating frequency band).