A Compact Dual Band Planar RMSA for WLAN/WIMAX Applications

The Presentation of a compact dual band planar Rectangular MicroStrip Antenna (RMSA) antenna for a WLAN (2.4GHz IEEE standards 802.11b/g)/WiMAX (2.6GHz IEEE standards802.16e) applications. The two resonant modes of the presented RMSA antenna are associated with various length and width of the planar strips in which a centre strip contributes for the lower resonant frequency 2.4GHz (2.26-2.4GHz with impedance bandwidth 240MHz) and two lateral strips contributes for the higher resonant frequency2.8GHz (2.73-2.95GHz with impedance bandwidth220MHz). By proper adjustment of the coupling between the two lateral strips and embedded centre strip enables the operation of dual band with a -10dB return loss, a near directive radiation pattern and a good antenna gain with sufficient bandwidth.