Abstract
A compact multiband antenna, using HFSS, is designed on FR4_epoxy substrate. The dimension of substrate are chosen to be 50 × 75 × 1.6 mm3 and has a permittivity of 4.4. An M-shaped antenna with symmetrical slots is used to form an array which is proposed in this paper. Inset feeding is made to make it simple and compact. Multibands are obtained in S11 versus frequency plots. The effects of forming an array of the antenna elements had been evaluated in order to obtain an upgraded performance of the presented antenna in the WLAN, WiMAX and Radar range. Lower bands were obtained with operating frequencies at 2.4, 3.6, and 5 GHz suitable for WLAN and WiMAX applications. For the operations in K-band Radar range, interesting results were obtained in 11.3–14.4 GHz band.
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