Mobile Antenna Systems Handbook
Mobile Antenna Systems Handbook
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Nowadays, in modern mobile and wireless communication systems, there is an increased demand for compact, wide bandwidth and low-cost antennas with dual band capability. In this paper, two shapes for a low cost reduced size PIFA with wide bandwidth are investigated. The antenna substrate is from a cheap foam material with εr=1.07. The antenna is fed by single coaxial feed. Size reduction is achieved by cutting U-shaped slot on the radiating surface of the PIF A structure. The antenna size becomes (0.22 λ × 0.18 λ). Wide bandwidth is reached by making the U-shaped slot with two unequal arms. Moreover, dual operating frequencies are achieved by cutting either L-shaped or U-shaped slits on the coupled feeding part of the radiating surface. The antenna resonates in Bluetooth ISM band at 2.4 GHz as well as in WLAN band at 5.2GHz. The bandwidths are about 31% and 7.5% for the lower and upper bands, respectively. The proposed antenna is simple in structure compared to regular stacked or coplanar parasitic patch antennas that, makes it suitable for most mobile communication applications.