Meander Line Antenna for GPS Phone Operation

A meander line antenna has several meander line sections so as to shorten the length from the corresponding monopole antenna in this design. In high performance meander line antenna for GPS and A-GPA applications, where size, proflle, and performance are of major considerations, shorter length of antenna are desirable. 1. INTRODUCTION The general GPS functions of PDA support the assisted functionali ty in 2.5/3G wireless net- works. Traditional antennas (1) such as monopoles, dipoles and patches are not suitable to meet the requirements of modern wireless communication and highly demanding mobile GPS systems. As a result, there is the need for alternative approaches to small antenna and high performance design. This paper describes a miniaturized meander shorting monopole for integration in modern GPS wireless systems. GPS is a satellite-based positioning system operated by the United States Department of Defense was o-cially put into operation in 1995. Using the difierence in the radio signal propagation times of at least three of the 24 GPS satellites, a GPS receiver can accurately determine its position worldwide to within a few meters. Signals for civil use are transmitted at a frequency of 1575.42MHz and bands. The general GPS functions of PDA support the assisted func- tionality in 2.5/3G wireless networks. Traditional antennas such as monopoles, dipoles and patches are not suitable to meet the requirements of modern wireless communication and highly demanding mobile GPS systems. As a result, there is the need for alternative approaches to small antenna and high performance design. This design describes a miniaturized meander shorting monopole for integration in modern GPS wireless systems. This thesis accomplished a GPS band for meander inverted-F monopole antenna structure and easy applied mobile cellular phone application. The measured and simulated data including return loss, antenna gain and radiation patterns are presented. 2. ANTENNA DESIGN AND RESULTS The resonance mode of a shorting meander wire antenna covers the GPS communication band- width of 1571.42{1579.42MHz. The simple wire tuning expansion are introduced to conflne the resonance mode region and to facilitate the frequency modes and impedance match expansion eas- ily for antenna and wireless system integration design. The design requirements for GPS antenna is combined into multiple objective goals, such as simplicity of the antenna geometry, radiation pattern, return loss, antenna impedance and polarizations. This design in general to a mobile com- munication apparatus and global positioning system antenna, and more particularly to a mobile communication system, which utilizes a small-scale metal for the GPS antenna design. Further,