A fork-like dual-band antenna with an inverted U-shaped parasitic element for WLAN and WIMAX applications

A fork-like dual-band dipole antenna with an inverted U-shaped parasitic element (IUSPE) is proposed and its performance is analyzed in detail. The proposed antenna is realized by using two-overlapped U-shaped (TOUS) patch and an IUSPE, which is fed by the coaxial line. The proposed antenna is built and numerically simulated by the HFSS. The simulated results show that the optimized antenna can operate at 3.3-3.69 GHz for WiMAX and 5.15-5.25 GHz for WLAN communication applications with respect to S
₁₁
<; -10 dB. Additionally, the proposed antenna gives a good impedance matching characteristic at the desired operating frequency bands and has omnidirectional radiation patterns, making it suitable for multi-band wireless communication applications.