Investigation of broadband inverted suspended rectangular patch linear polarized antenna

In this paper, broadband inverted suspended linear polarized antennas with operating frequency at 2.4GHz for Wireless Local Area Network (WLAN) application are designed. Various shapes of slot are added on the inverted suspended rectangular patch to investigate the effect of the antenna performance. The antennas are designed by using L-probe amendment with inverted suspended rectangular patch, where this approach is used to enhance the bandwidth and gain of the antennas. The simulation is done by using Computer Simulation Technology (CST) software. The bandwidths for the inverted suspended linear polarized antennas with different shape of slot are more than 200MHz, which meet broadband application. Besides, the axial ratio for each antenna is above 3dB.