Compact multiband PIFA type antenna

A small volume multiband planar inverted-F antenna (PIFA) with an electrically unconnected multi-strip ground plane is presented. The proposed antenna is low cost and easily fabricated, operates over a wide range of mobile communication standards with 3.57:1 and 2.32:1 VSWR at 0.89-2.48 and 3.1-10.6-GHz, respectively.