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Broadband PIFA antenna for mobile communications terminals

A broadband PIFA antenna that operates in the 800-970 MHz and 1.5-5.9 GHz bands with VSWR less than 3 is proposed for wireless communications terminals. This wideband is enough to cover many of the most important mobile communications services around the world such as GSM 850/900, DCS, PCS, UMTS, WiFi, Bluetooth, WiMAX, and the major part of the LTE bands. Antenna volume of 4×2×1 cm3 is within acceptable limits for different mobile terminals including portable handheld devices and embedded WLAN antennas. Besides its wideband characteristic, the proposed antenna exhibits adequate gain and radiation patterns, and has the advantages of any PIFA antenna such as low SAR and stable tuning.