Design of double U-slot microstrip patch antenna array for WiMAX

In this paper, a double U-slot microstrip patch antenna array for Worldwide interoperability for microwave access (WiMAX) is presented. The uniqueness of this design is that a double U-slot patch is designed on a single substrate with single feed. Antenna array is developed to increase the gain. The design is based on transmission line model. The radiation performance such as VSWR, return loss, radiation pattern and gain of the antenna are simulated using Ansoft HFSS and presented. A prototype antenna model is fabricated and tested using Network Analyzer. Measured results of VSWR and return loss are presented and discussed.