Abstract
AbstractThis paper presents a compact patch antenna operating in S-band frequency which is etched with a triangular dumbbell-shaped defected ground structure has been proposed for Bluetooth applications. The antenna uses inset feeding technique and RT duroid as substrate holding relative permittivity of 2.2. The patch antenna parameters have been compared before and after installing DGS, namely return loss, gain, and VSWR. The results have shown that antenna parameters and performance have been improved drastically after installing DGS. The high frequency structured simulator software (HFSS) has been assigned for simulations and to obtain parameters like voltage wave standing ratio, return loss, gain, bandwidth, and current distribution. The radiation pattern for co-polarization and cross-polarization, in both magnetic plane and electrical plane of the designed antenna, is also presented. The depicted antenna has a return loss less than 10 dB and VSWR less than 2 and provides a very good bandwidth. The depicted antenna is fabricated and the practical results are analyzed. It shows that the simulated results and the measured results are almost same.KeywordsMicrostrip antennaTriangular dumbbell DGSInset feedBluetooth application
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