PORTABLE COMMUNICATION TERMINAL AND PIFA ANTENNA THEREOF

The present 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 the radiation sheet is opened thereon with a groove. The radiation sheet has an inherent resonance point, and the groove may redistribute a current on the radiation sheet, thereby changing a current length. Therefore, the radiation sheet may achieve impedance matching at higher frequency points, thereby introducing one new intermediate frequency resonance point. Further, when the radiation sheet is irradiated, electromagnetic waves may also be coupled to the parasitic unit to excite the parasitic unit. The excited parasitic unit may generate a higher frequency resonance, thereby introducing one new high frequency resonance point. Since the groove and the parasitic unit introduce the intermediate frequency resonance point and the high frequency resonance point respectively on the basis of th