A dual band Compact circularly polarized asymmetrical fractal antenna for Bluetooth and wireless applications

In this paper, a dual band Compact fractal antenna is proposed for circular polarization (CP). The proposed antenna is designed to operate at dual bands having bandwidth 1 GHz and 8 GHz at resonant frequencies 2.4 GHz and 12.9 GHz respectively for Bluetooth and wireless applications with good return loss and radiation pattern characteristics. It consist asymmetrical antenna by truncating the sides of a square patch. The proposed antenna is fed by a 50-Ω microstrip line and fabricated on a low-cost Rogers-RT5880 substrate having dimensions 50(L) × 50(W) × 3.2(h) mm³ with ε_r= 2.2 and tanδ=0.0009. The antenna shows acceptable gain with omni-directional radiation patterns in the proposed frequency range.