Abstract

A compact coplanar waveguide (CPW)-fed planar monopole antenna with triple band operation is presented. By inserting two I-shaped notched slots and a open-ended U-shaped slot on the edge of the radiation patch, and integrating two symmetrical meander microstrip-lines on the upper edge of two rectangular ground planes, three operating bands covering 2.4–2.63, 3.23–3.8 and 5.15–5.98 GHz can be achieved. Moreover, the designed antenna, with compact size of 23×30 mm2, can provide excellent characteristics, including better performance of interference suppression, nearly dipole-like radiation pattern and moderate gain for three bands, which prove that the proposed antenna is very suitable for WiFi/WiMAX applications.

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