Portable communication terminal and PIFA antenna thereof

The invention relates to a portable communication terminal and a PIFA antenna thereof. The PIFA antenna comprises a substrate, a first metal layer, a second metal layer, a radiation sheet, and a parasitic unit, and a slot is formed on the radiation sheet; the radiation plate has an inherent resonance point, and the slot can redistribute the current on the radiation plate, thereby changing the current length; therefore, the radiation plate can realize impedance matching at higher frequency point, thereby importing a new intermediate frequency resonance point. Furthermore, the electromagnetic wave can be coupled to the parasitic unit so as to excite the parasitic unit when the radiation plate performs the radiation; the excited parasitic unit can produce higher frequency resonance, thereby importing a new high frequency resonance point again. Since the intermediate frequency and high frequency resonance points are imported by the slot and the parasitic unit on the basis that the radiation plate has the inherent