Design and parametric analysis of a dual band frequency reconfigurable planar dipole using a dual band artificial ground plane

This paper presents the design of dual band frequency reconfigurable fork shape planar dipole in the Industrial, Scientific and Medical (ISM) band (2.4GHz and 5.2 GHz). The proposed antenna can be used for WLAN applications. Antenna operates in dual as well as single band mode depending on switching combination. The proposed antenna gives bandwidth of 12.5% and 6.7% for 2.4 GHz and 5.2 GHz respectively in dual band mode while 15.5% for 2.4 GHz in single band mode. The performance of the antenna is analyzed with a ground-free substrate and traditional Perfect Electric Conductor (PEC) ground plane. The same antenna is mounted on a dual band slotted mushroom type Electromagnetic Bandgap (EBG) surface which improves the return loss of the antenna in both bands by -25 dB w. r. t. the PEC based dipole antenna. The proposed antenna can be used in WLAN applications. The simulations were carried out in SEMCAD and CST MWS.