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A Circularly Polarized Stacked Patch Antenna using Polyflon Substrate for Wireless Applications

A probe-fed circularly polarized stacked patch antenna is presented and simulated by using Commercial Ansoft High Frequency Structure Simulator. The design consists of two patches and two substrates. The bottom patch is square-shaped where as the top patch is of triangularshaped. T-shaped slots parallel to the edges of the patches are inserted so that bandwidth can be improved. Enhancement of the gain is observed by varying the substrate material for the proposed antenna. Return loss, gain, axial ratio and radiation patterns are simulated and analyzed. This antenna is best suitable for wireless communication applications like WiMax, WLAN and Radar applications.