Design of U-shaped antenna using different substrate with enhanced bandwidth for WLAN/WiMAX applications

A compact single layer coaxially fed wideband microstrip antenna is presented in this letter. The proposed antenna consists of a U-shaped patch and a rectangular ground plane embedded with two open ended rectangular ground slots (RGS). The antenna is designed for wide band of communication (3.02–6.03 GHZ). It is found that the maximum bandwidth of the antenna is obtained about 66.5% when a rectangular slot is inserted near the lower edge of the U-shaped patch. The antenna was studied experimentally for impedance bandwidth, and gain. It is shown that the antenna can cover the bands of several applications including IEEE 802.11n (and the older 802.11a) WLANs application (allocate channels between 5.15 and 5.825 GHz) and WiMAX (3.2–3.8 GHz) application. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:959–963, 2016

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