A Design of Modified Dual-Band Microstrip Patch Antenna for WLAN/WIMAX/SATELLITE Applications

This paper presents a modified dual-band MPA (microstrip patch antenna) by incorporating a hexagonal complementary split ring resonator (HCSRRs) on the radiating patch with partially ground plane structure. Numerical simulations are presented using Computer Software Simulator (CST) microwave. The measured result shows that the antenna exhibits dual band resonance with bandwidth of 3.26 – 5.89 GHz and 6.06 – 9.72 GHz at the -10 dB return loss, centered at 4.575 GHz and 7.89 GHz respectively. These bands cover WLAN (Wireless Local Area Network), WiMAX (Worldwide Interoperability for Microwave Access) and satellite communication frequency band. The directivity of the antenna was satisfactory also found to be 3.02dBi, 2.84 dBi in the two frequency bands of operation. The VSWR was found to be 1.044 and 1.096 within the range of operating frequencies. These shows that the antenna has a minimum signal reflection which signify good impedance matching.