Dual Band Microstrip Antenna for UMTS/WLAN/WIMAX Applications

In this paper a novel compact slit loaded line fed micro strip antenna is presented for UMTS/WLAN/WIMAX lower band applications. The proposed antenna has been fabricated on glass epoxy substrate having dielectric constant 4.2. The experimental results show that the antenna can provide two separate impedance bandwidths of 247MHz (about 15.10% centered at 1.64GHz) and 634MHz (about 26.63% centered at 2.38GHz), which is best suited frequency range of UMTS(1.92-2.17GHz), WLAN(2.40-2.48GHz) and WIMAX(2.495-2.695GHz). Good impedance matching and radiation efficiency in the desired frequency bands has been achieved.