JCS_V5_N2_RP5 Rajnish R.K. Chauhan Journal on Communication Engineering and Systems 2277-5242 5 2 30 35 PIFA, Dual Band, MIMO Antenna, WiMAX / WLAN, Bluetooth, GSM A compact dual band low profile MIMO PIFA antenna for mobile handset GSM (800 MHz - 1100 MHz), Bluetooth (2.4 - 2.48 GHz), WLAN (3.1 GHz - 3.45 GHz), WiMAX (2.5 GHz - 2.69 GHz) applications is presented in this paper. The size of the proposed antenna design is 16 x 33 x 4 mm on a 100 x 45 mm ground plane. Two feeding ports are arranged perpendicular to each other such that, the polarization diversity is exploited because of the reason that the two ports are cross polarized. A slot of size 20 x 37 mm is cut on the bottom plane for optimized isolation of two ports. Introducing slit in the PIFA diverging part and its ground plane results in making quad resonance frequencies and growing the bandwidth, correspondingly. The antenna simply uses an inexpensive substrate FR-4 of 1.6 mm height and dielectric constant of 4.4. Details of a compact, low profile dual band PIFA antenna with slotted ground and patch and height of 4 mm are presented and studied in this paper. February - April 2016 Copyright © 2016 i-manager publications. All rights reserved. i-manager Publications http://www.imanagerpublications.com/Article.aspx?ArticleId=5964