A compact microstrip slot antenna with novel E-shaped coupling aperture

A microstrip slot antenna with novel E-shaped coupling aperture is presented. Different parameters of the antenna are explored. It´s shown that by varying the dimensions of E-shaped slot and length of Ls (matching stub), the antenna can be designed for high gain, dual band or quad band characteristic. As it´s shown compacting the antenna is also possible. A simple patch antenna, a dual band antenna and a practical quad band antenna is designed. The last one is developed to meet IEEE 802.11a/b/g and IEEE 802.16d standards in order to cover all of the wireless LAN and WiMAX frequency bands. Last two antennas are 47% smaller than a regular patch antenna resonating at 2.47GHz while providing relative high gain and very good efficiency. HFSS and CST softwares are exploited to verify the antennas performance.