International Journal of Advanced Technology in Engineering and Science www.ijates.com Volume No.02, Issue No. 05, May 2014 ISSN (online): 2348 – 7550 Page | 91 DESIGN AND SIMULATION OF PIFA ANTENNA FOR COMMUICATION APPLICATION Avinash Gupta 1 , Sachin Gupta 2 , Nitin Kathuria 3 , S.K.Dubey 4 1,2 UG Students of Department of ECE AIMT, Greater Noida (India) 3 Assistant Professor, Department of ECE AIMT, Greater Noida (India) 4 Director, AIMT, Greater Noida (India) ABSTRACT A PIFA antenna has been designed to meet the coverage requirements of the DCS, PCS, UMTS and WLAN bands. The antenna consists of a main patch, rectangular feed, shorted ground. The radiator side rectangular feed, shorted ground, using simple feed lines with broadband characteristics. The handset represents the finite ground plane, and a pin is situated across the feeding point for tuning purposes. Initial tuning was obtained by placing lumped capacitors, instead of the varactor, over the radiator. good agreement is obtained between the predicted and measured input return loss, gain and radiation pattern over the tuned frequency range.a new planar inverted-f antenna with a tri-band frequency starting from 1500 MHz ,1900MHz 2.2 GHz is proposed as an alternative for high performance mobile phones intended to cover the major part of the mobile phone frequencies worldwide. A prototype of the antenna was constructed on HFSS and the return loss and radiation patterns were measured to demonstrate an adequate radiation performance. The antenna dimensions are compatible with the requirements imposed by the most recent commercially available smart phones. I. INTRODUCTION The planar inverted-F antenna (PIFA) remains as one of the most popular antennas used in mobile phones today [1, 2]. It is extensively employed owing to its small size, low profile, excellent performance, simple fabrication and relatively low specific absorption rate (SAR) [3, 4]. However, a conventional PIFA has an inherent narrowband that has to be enhanced in order to fulfil the increasingly bandwidth requirements imposed by the new handsets. If a mobile terminal is designed for global coverage and international roaming, the antenna should be able to operate in dozens of frequency bands to cover the many 2G, 3G, and 4G networks around the world [2]. Achieving this is not an easy task considering that the new smart phones demand more space for the electronics associated to multiple functionalities that these terminals, leaving small room to accommodate the antenna system. In the past, several techniques have been used to improve the bandwidth of PIFA antennas. The introduction of various resonant elements in order to create a multiband PIFA is a very common approach [4,6]. Another method calls for the addition of parasitic patches with resonant lengths close to the frequency band where the bandwidth improvement is required [7,9]. The inclusion of slots in the ground plane has also been used to enhance the bandwidth mainly in the lower frequencies of the spectrum allocated to mobile phone services [10, 12]. Finally, a combination of the previous techniques is frequently utilized to add the effects of