Design of modified geometry Sierpinski carpet fractal antenna array for wireless communication

The incredible increase in wireless communication in the last few decades has led to the need of antennas with increased bandwidth, gain and low profile. One such technique to achieve wideband/multiband antennas is by applying fractal shape into antenna geometry. This paper presents the design of Sierpinski carpet fractal antenna (SCFA) up to third iteration. To increase the gain further some modifications in the fractal geometry have been proposed. This paper further proposes the modified geometry SCFA and a corporate feed SCFA array. These antennas are designed using HFSS on FR4 substrate with dielectric constant of 4.4 and fed with 50 ohms microstrip line. Out of these a simple 3rd iteration SCFA antenna has been fabricated and tested using a VNA and the fabrication results are in good comparison to the simulation ones, thereby suggesting the credibility of all the designed antennas.