Abstract
In this article, a compact stacked cylindrical dielectric resonator antenna loaded with a patch is proposed for the wireless sensor network (WSN). Stacking of two dielectric material techniques is used to enhance the bandwidth of the antenna, and the metallic patch is used as a reflector for improving the gain and enforce compactness. The dielectric resonator antenna (DRA) is excited by the central coaxial probe feed with TM21 mode being observed at 6.7GHz resonant frequency. The proposed antenna is fabricated, and a close agreement is found between simulated and measured results. The proposed structure offers wide impedance bandwidth of 7.5GHz from 5.7 to 13.2GHz. A peak gain of 6.8 dBi is measured over the desired frequency band. The proposed DRA finds scenarios in WSNs and sensor node application.
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