Quad-Band Planar Inverted-F Antenna (PIFA) for Wireless Communication Systems

In this paper, a compact quad-band planar inverted-F antenna (PIFA) for wireless communication systems is presented. The proposed PIFA consists of a radiating patch with a hook- shaped slot and a modifled ground plane with pair of square-ring and rotated I-shaped slots. The antenna is fabricated on an FR4 substrate with dielectric constant of 4.4. By cutting a hook-shaped slit at radiating patch, good dual-band property can be achieved which covers 3.5GHz worldwide interoperability for microwave access (WiMAX) and 5.2GHz wireless local area network (WLAN) frequencies. In addition, by using a modifled ground plane with a rotated I-shaped an the pair of square-ring slot, additional resonances at the higher frequencies are generated which suitable for 7.25{7.75GHz downlink of X-band satellite communication systems and 8.02{8.4GHz international telecommunication union (ITU) applications. Good return loss, antenna gain and radiation pattern characteristics are obtained in the frequency band of interest. The proposed antenna has a small dimension of 24 £ 3 £ 1:6mm 3 .

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