Design And Simulation of Sierpinski Pre fractal Antenna Using HFSS

A compact triangular patch Pre Fractal Sierpinski antenna with micro strip feed line for multiband and moderate gain antenna for portable communications systems respond to the great demand for both commerci al communications systems and military is designed with HFSS Ansoft v11 and fabricated on TEFLON. The results demonstrate that the proposed antenna with triangular slots at special positions can generate steady radiation pattern and is capable of wrapping the frequencies demanded by UWB Communication system, RFID, Wi - Fi, GSM, WiMax. Good agreement between the simulated and measured results further validates the utility of presented antenna for proposed application. For operational frequency of 2.25 GHz, 4.15 GHz and 6.25 GHz, VSWR bandwidth nearly 2.4 and return loss bandwidth up to - 15.85db has been obtained. A triangular slots and cut plays an important role in balancing resistive part and reactive part which affe cts the impedance matching. A thick dielectric substrate is helpful in increasing the bandwidth