Abstract: Planar inverted-F antennas are miniature designs that offer considerable versatility for both mobile and other wireless applications. The design is particularly suited for mobile devices. In this paper the design and of a compact quad band planar inverted-F antenna (PIFA) is proposed for mobile handset applications. The proposed antenna is a PIFA with slots inserted in top radiating patch as well as ground plane to get multi-band operation. The antenna covers GSM900, GPS, GSM1900 and UMTS bands. The antenna consists of a rectangular planar element suspended above the FR4 dielectric substrate. The ground plane is on the bottom side of the substrate. The antenna is having a simple structure, small size, wide bandwidth and good gain. The antenna geometry, simulations of return loss, hardware implementation and measured results are also discussed.