Multiband antenna at ISM band using textille material

Two types of multiband antenna are proposed and discussed; straight dipole antenna and Koch fractal dipole antenna. Both antennas are designed to operate at three ISM band. The main aim of this paper is to design, fabricate and analysis the performance of the proposed antennas. The antenna's performance was analyzed in term of reflection coefficient, efficiency, and gain. The simulations are carried out using CST Microwave Studio. The fabrication process involved conductive copper tape and denim textile as the substrate. The effect of different bending size on the antenna's performance are discovered.