The additional elliptical shape on star patch microstrip antenna for dual UWB

In this century, the trend an antenna should be simple and have small dimensions and multifunction. This paper present design of star patch with addition elliptical shape to bandwidth with dual frequency operation. The proposed antenna use fiberglass epoxy FR-4 substrate with dimension of mm2 with dielectric constant (?r) value of 3.9 and thickness 1.6 mm. The antenna work at frequency 1.759 GHz-3.237 GHz and 4.451 GHz-5.992 GHz with VSWR less than two, return loss below 9.54 dB which can work on GSM 1900 (1850-1990 MHz), UMTS (1920-2170 MHz), WLAN (IEEE 802.11b/g and IEEE 802.11a), mobile WiMax 2.3 GHz, 2.5 GHz, and fixed WiMax 5.8 GHz based on simulation program.