Design and Implementation of Tri Band Microstrip Patch Antenna with Bandwidth Enhancement for GSM, WLAN, WiMAX system

In this research design of tri-band microstrip antenna suitable for wireless GSM, WLAN and WiMAX application. The total size of the proposed antenna (107 110 1.6) mm3. The substrate material type is FR-4(epoxy). Return losses of -34.328 dB, bandwidth 24.8%, gain 2.8738 dB at frequency 0.912 GHz and return losses -37.375 dB, bandwidth 52.33%, gain 2.0411 dB at frequency 1.842 GHz and return losses -27.753 dB , bandwidth 40%, gain 4.4762 dB at frequency 2.4 GHz and return losses -33.471 dB, bandwidth 4%, gain 4.9543 dB at frequency 3.534 GHz. The simulated results are obtained using the software computer simulation technology CST. The simulated results are verified with experimental results which are in acceptable agreement.