Effect of Directly Coupled Parasitic Patch on Floral Shaped Patch Antenna

With the rapid development in wireless communication systems, the multiple separated frequency band antennas have become one of the most important circuit elements and attracted much interest. In this paper firstly a floral shaped patch antenna is designed to resonate at multiple bands by introducing four slits on all the four sides of a rectangular shaped patch. Later on by adding four different radiating elements connected together and directly coupled to the floral shaped patch provides three adjacent resonant modes very close to each other. By controlling the resonant frequencies of the parasitic elements, a wide impedance bandwidth can be observed. The bandwidth is found to be increased from 4.04 % to 8.582 %. The composite effect of integrating slits with the parasitic elements in the design provides a simple and efficient method for obtaining low profile, broadband, high gain antenna. The design is suitable for wireless applications in the range of