DESIGN AND ANALYSIS OF PLANER INVERTED-F ANTENNA (PIFA) WITH ELECTROMAGNETIC BANDGAP STRUCTURES

Abstract

In mobile phones and several other wireless communication devices, antenna is an important element which decides the quality & performance of the device over various communication standards. In last few years mobile phones has evolved rapidly and they are required to give various services like data, voice, Internet & multimedia content without compromising on their weight, volume and performance. Latest communication standards such as GPS, Wi-Fi, 3G, WiMAX, 4G LTE, GLONASS etc are needed to be supported by the handsets. The recent growth and rapid development of mobile communication and devices operating at multiple frequency bands has lead to the requirement of antennas which supports multiband or wideband operation. With Fourth Generation (4G) wireless communication systems evolution worldwide, the demand for handsets to operate on both old & new standards with minimum number of antennas becomes important. Therefore, the most important task for the new antennas is to work on both new 4G LTE, WiMAX frequency bands and already established frequency bands also. However, there is also a requirement in handheld devices to support both cellular and non-cellular technologies such as GPS, WLAN & Bluetooth etc. In this thesis, a small and compact multiband internal antenna that operates in several bands including GPS, GLONASS, GSM 1800, GSM 1900, UMTS (3G), 4G LTE, WLAN, Bluetooth frequency bands has been designed. The antenna is a single feed and low profile Planar Inverted-F Antenna (PIFA). It has two rectangular slots on the ground plane which improves operating bandwidth & resonance of the antenna. Using High Frequency Structure Simulator (HFSS) software, simulation has been carried out to analyze and optimize the antenna’s characteristics and performance. From the simulation results, it has been observed that the antenna is able to operate at desired resonant frequencies and have good operating bandwidth supporting multiple bands.