Design of Multi-band Microstrip Antenna for Wireless Communications and ITU Applications

A multi-band microstrip patch antenna for WiMAX, WLAN and ITU-Region1 applications is presented in this letter. The proposed antenna consists of FR4 substrate with dimensions of 15 × 15 × 1.6 mm 3 , ground plane and radiation patch that fed by 50 Ω microstrip line. This antenna with two symmetry of L-shape and U-shape slots and folded strip lines in the configuration of radiation patch, cover 3.5 GHz frequency for WiMAX, two 5.2 and 5.8 GHz frequencies bands for WLAN and 4.3 GHz for ITU-Region1 applications to consider simulated and measured results. The omnidirectional radiation pattern characteristics and −10 dB return loss for all frequencies bands are obtained in this antenna.