The design and analysis of two antennas for mobile phone

Abstract

In recent years, the demand for compact handheld communication devices has grown significantly. Devices having internal antennas have appeared to fill this need. Antenna size is a major factor that limits device miniaturization. In the past few years, new designs based on the micro-strip antennas and planar inverted-F antennas have been used for handheld wireless devices because these antennas have low-profile geometry and can be embedded into the devices. New wireless applications requiring operation in more than one frequency band are emerging. Tri-band phones have gained popularity because of the multiple frequency bands used for wireless applications. One prominent application is to include Bluetooth, operating band at 2.4 GHz, for short-range wireless use. This paper reviews the designs and analysis of two types of mobile phone antennas which is a triple-band. A very Low Profile Phone Antenna for GSM (880-960MHz) / DCS (1710-1880MHz) / PCS (1850-1990MHz) and a Folded Planar Inverted-F Antenna (PIFA) for GSM (880-960MHz) / DCS (1710-1880MHz) / Bluetooth (2400-2484MHz) are studied. Both type of antenna is modeled in CST software. By comparing these two antennas, we will be able to understand the antennas specifications and determine which antenna is much more convenient for the demanding nowadays mobile phone requirement that features the compactness-size reduction, and broadband-ability operating in multiple frequencies.