Dual-wideband G-shaped slotted printed monopole antenna for WLAN and WiMAX applications

A new dual-wideband printed monopole antenna is presented for satisfying the wireless local area network (WLAN) and the Worldwide Interoperability for Microwave Access (WiMAX) applications simultaneously. A G-shaped slotted printed rectangular monopole antenna with a defected ground plane for band broadening is presented. The antenna was deployed on FR4-Epoxy dielectric substrate with the overall dimensions of the proposed antenna can reach 30 × 48 × 1.6 mm³. Theoretical and experimental characteristic are illustrated for this antenna, which achieved impedance bandwidth of 60.26% (over 2.4-4.47 GHz) and 28.04% (over 4.6-6.1GHz), with a reflection coefficient ≤ -10 dB. The obtained characteristic demonstrates that the proposed antenna is able to operate at dual wideband frequency covering all the WLAN bands and WiMAX bands.