Abstract
AbstractA cavity-backed square ring-slot antenna is presented in this article, and the intended design depends on substrate-integrated waveguide (SIW) technology. The proposed antenna consists of dielectric substrate, SIW cavity, square ring slot, ground plane, and micro-strip feeding line. The antenna is designed for 5.5 GHz frequency, extensively used for WLAN applications. The simulation results of intended antenna have a fractional bandwidth of 5.8%. The intended antenna has a return loss and gain of −22.94 dB and 6.68 dBi, respectively, at 5.52 GHz and −12.95 dB, 7.34 dBi, respectively, at 5.74 GHz. Results show that the designed antenna has promising characteristics like high gain, wider bandwidth, unidirectional radiation pattern, low-profile, easy integration, and easy fabrication for WLAN applications.KeywordsCavity-backed antennaSIWSquare ring slotWLAN
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