The geometry of the E- shaped antenna geometry is shown in
Fig.1. The antenna has only one patch, which is simpler than
most conventional wide-band microstrip antennas which use
multiple layers. Two parallcl narrow slots of length and width
43.25mm x Imm are inserted into to the rectangular patch
whose size is about IO5 mm x 44 mm, and it is fed by a probe
at the centre of the long edge. Fig. 2 shows the practical
configuration of the E-shaped antenna with a ground plane
of dimensions 150 mmxl50mm and 18mm thickness of air
substrate