Abstract
A novel Defected Ground Structure (DGS) is proposed to miniaturize a 2×2 Modified Corporate Feed Planar Antenna Array (M-CFPA) with a modified corporate feeding network. The DGS altered the surface current distribution and shifted the resonance frequency to the lower side. After running a parametric sweep of length and width of the patch antenna element, achieved the miniaturized antenna array resonating at 2.4 GHz frequency. The proposed antenna array is designed using Rogers/RT Duroid 5,880 ( ) substrate with a thickness of 1.6 mm. The overall dimensions of the proposed Planar Array with DGS (PA-DGS) is 25.2723 % lesser than M-CFPA. The M-CFPA has a peak gain of 11.53 dB with a - 10 dB reflection coefficient bandwidth of 118 MHz. The proposed PA-DGS array exhibits a peak gain of 9.51 dB with 100 MHz -10 dB bandwidth.
 HIGHLIGHTS
 
 One of the major challenges faced in antenna array design is creating an efficient feed network
 An optimum feed network is designed to miniaturize the antenna array
 Metamaterial structures are deployed as defects in the ground plane to achieve further miniaturization
 
 GRAPHICAL ABSTRACT
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