ABSTRACT
In this paper, we have reported the wireless communication application of U shaped antenna with EBG structured ground plane. The proposed antenna was designed on FR4 substrate of 18 x 21 mm2 dimensions with thickness 1.6 mm. We have systematically designed the antenna starting from U shape patch with partial ground plane. In this structure, very short bandwidth about 2 GHz with resonance frequency at 2.52 GHz was obtained. To improve the parameters of the designed antenna, we have introduced EBG structure (1 x 1 mm2) in ground plane. We obtain wide bandwidth of about 7 GHz with resonant frequency 4.10 GHz. Further improvement in antenna parameters was achieved by introducing parasitic elements with different shapes (Hexagonal, Triangle, Rectangle, and Circular). Effect of these parasitic elements on the return loss and radiation pattern over a wide frequency spectrum has been studied. We have applied the parametric analysis on these parasitic elements to optimize the dimensions. For triangle parasitic element, the resonant frequency was observed at 4.11 GHz with band width 6.12 GHz. The return loss i.e. about -62 dB at resonant frequency is also higher as compare to other parasitic structures.
