Design of Sierpinski Carpet Fractal Antenna for wireless Applications

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Abstract

In wireless applications the antenna plays a vital role. It acts as an electromagnetic wave transmitter and receiver. When wireless antennas emit electromagnetic waves, they will reflect when they come into contact with objects. The research work suggests an antenna producing multiple frequencies operating in the 1 GHz–8 GHz range including both C-band and S-band applications operating range. The antenna is designed for VSWR< 2 and return loss S11 < 10 dB. A rectangular microstrip patch with a fractal Sierpinski carpet approach is used in the antenna's design. The actual antenna is made of Epoxy FR-4 substrate, which has a thickness of 0.06 mm and a relative permittivity of εr = 4.4. According to the test results, there are three operational frequencies: 2.72 GHz, 3.5 GHz, and 5.04 GHz for first iteration of Fractal carpet antenna and there are 4 operational frequencies: 2.76 GHz, 3.4 GHz, 4.92 GHz and 7 GHz for Second iteration of Fractal carpet antenna. Based on the findings, the developed antenna satisfies the required criteria to be used in many wireless applications.

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Keywords

Microstrip antenna, S-band, Sierpinski Carpet fractal, C-band, return loss, VSWR.