Design of a Novel 2-D Printed Inverted-F Antenna with Defected Ground Structure for Ultra Wide Band Applications

In this paper, printed IFA is presented having coplanar waveguide feed with Ultra Wide Bandwidth (UWB). The dimension of antenna is 14mm × 24mm × 1.59mm. The IFA structure has a printed inverted L-shaped stub on the left hand side of the ground plane with a spiral shaped defect on the right side of the ground plane. The simulated bandwidth is defined from 3.0 GHz to 11 GHz with reflection coefficient 10dB. The compact size and also the printed structure of antenna make it more useful for practical applications. The antenna is fabricated over FR4 substrate having relative permittivity ε
_r
=4.4 & thickness h=1.59mm. The simulated and measured results are well matched.