Planar inverted-F antenna (PIFA) is a most commonly used antenna especially in mobile communication because of its simplicity and low cost, though it suffers bandwidth limitations. In this paper, a study of Planar Inverted - F Antenna (PIFA) and its array is presented. The arrays two by two (2 × 2), four by two (4 × 2), four by four (4 × 4), eight by two (8 × 2) PIFA and dipole antenna array were simulated using MATLAB. The performance of the designed antenna was discussed on the results (return-loss, bandwidth, directivity, radiation pattern) and compared with the its array in term directivity and radiation pattern. Keywords: Planar inverted-F antenna (PIFA), PIFA array, dipole antenna array.