Abstract
This paper presents a design of dual frequency band operation nearly square patch antenna for IEEE 802.11b,g (2.4Ghz-2.4835GHz) and IEEE 802.11a (5.15GHz-5.25GHz)by using a patch antenna. The patch and ground plane are separated by a substrate; the radiating patch have two pairs of orthogonal slits cut from the edge, this antenna has wide bandwidth in the frequency band of (WLAN) and with a return loss ≤ −10 dB from 2.4 GHz to 2.48 GHz and from 5.12 GHz to 5.32 GHz exhibits circularly polarized far field radiation pattern. The proposed antennas have been simulated and analyzed using method of moments (MoM) based software package Microwave Office 2009 v9.0. The results show that the antenna has dual band frequency operation by using slit load.
