Abstract
Wireless technology is growing rapidly in today’s era. It is very crucial to design and develop smart antenna structure which could resonate for multiple frequency bands. In this paper, the Dielectric Resonator Antenna (DRA) array has been successfully designed for multiband applications. The presented array resonates at 1.85 GHz, 5.13 GHz, 9 GHz and 14.24 GHz frequencies with the peak gain values of 1.20 dBi, 2.66 dBi, 3.91 dBi, 6.6 dBi and 2.05 dBi respectively. The microstrip line feed is utilised as feeding technique where the width of microstrip line is optimised to achieve adequate antenna resonance. The alumina ceramic has been utilised as DRA material having the relative permittivity of 9.3. The FR4 material is used as a substrate above which the dielectric resonator blocks have been formed. The overall size of the antenna is 50 x 40 mm2. There a close match between simulated results and measured results which shows proposed structure potential for GSM 1800 (1.81 GHz), WLAN (5.13 GHz), Radar (9 GHz), Direct Broadcast Satellite (12.5-15 GHz) applications
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