Modeling of Miniaturized Microstrip Patch Antenna having Concentric Polygon Shaped with Eight Segments Slots based on DGS for Multiband Wireless Applications using Parametric Analysis

A highly miniaturized microstrip patch antenna using defected ground structure (DGS) loading Concentric Polygon shaped with eight segments slots (CPSESS) is presented in this paper. Initially a conventional antenna of active radiator area of 841mm2 and volume of about 6136 mm 3 is designed at 2.4GHz, for FR4 substrate, it is resonating for dual band operation of bandwidth of 43.5MHz and 160.2MHz. This antenna is miniaturized by employing novel DGS comprising of CPSESS. It result new model of highly compact size, i.e. active radiator with volume miniaturized 441 mm2 , 3427 mm3 , Thus, providing reducing in size 52.43% & 55.85% as compared to conventional antenna. Further the proposed model exhibit multiband band frequency by varying size of slots of CPSESS on DGS by parametric analysis. The antenna also shows acceptable gain of all frequency band around 1.06 dB The obtained resonance, bandwidth, gain and radiation performance proposed model makes it suitable multiple wireless applications such as for WLAN, Radar and X-band. Keywords:- DGS, patch antenna, modelling multiband, FR4 substrate, miniaturization, Parametric variables