Multiband fractal antenna for C-band ground station of satellite TV in ITU region-3

Abstract

This paper presents the design of a compact size Sierpinski carpet fractal antenna, operating in C-band with two resonant frequencies of TV satellite system, namely (3.625 – 4.2) GHz, and (5.85 – 6,425) GHz. Antenna is designed on FR4 microwave laminate, with return loss S11<−18 dB. Bandwidth of antenna is BW> 80 MHz, for VSWR<2, at 50 ohm input impedance. To achieve compact size, despite of fractal structure advantage authors used the probe feed and shorting pins on antenna aperture. The design optimization was supported by means of HFSS computer code. Simulated as well as experimental result agree favorable.