Design of dual-band textile antenna for 2.45/5.8-GHz wireless applications

Microstrip patch antennas are widely used in microwave applications. The substrate used in their realization is a key parameter. On one hand, it may be considered as a technological level to ensure good performance (efficiency, bandwidth, radiation). On the other hand, speaking of the economic side, it may be used in order to obtain cheap antennas. In this work, we are interested in the use of two different types of substrates: polyester and jeans cotton, and two different types of conductive textile materials (Electro-textile) which are Pure Copper Polyester Taffeta Fabric and Zelt for the realization of Wearable antennas. The antenna consists of a rectangular planar patch element embedded with L shaped slots and stair shape slot in the middle of the patch element. This antenna, fed by a coplanar waveguide (CPW), is intended to be integrated and carried in a person's clothing. The proposed antenna is simulated and the results show that the operating band covers 2.25 GHz to 2.74 GHz and 4.3 GHz to 6.8 GHz corresponding to the WLAN and WiMAX bands.