Design and simulation of a Sierpinski Carpet Fractal PIFA for WLAN and HiperLAN application

This paper describes the design and simulation of Sierpinski Carpet Fractal Planar Inverted F Antenna (PIFA) for WLAN and HiperLAN applications. Simulation of antenna is carried out using CST software; on a FR4 board with a substrate thickness of 1.6 mm and relative permittivity of 4.7. The antenna achieved satisfactory 10-dB impedance bandwidths, between the frequencies of 2341-2812 MHz and 5360-6154 MHz, which applies to Bluetooth, WLAN and HiperLAN applications. Performance of the proposed antenna is discussed in terms of reflection coefficient (S₁₁), radiation patterns, and gain. Analysis of the result indicated that the number of resonances increases linearly with the number of iteration. On the other hand, bandwidth produced is also largest at the highest resonance point. In the final design, the proposed first fractal iteration produced the desirable trade-off between bandwidth adequacy and resonating at the desired frequencies.