A New GPS Microstrip Antenna with Low Susceptibility to Multipath Interference

Lorena I. Basilio, Jeffery T. Williams, and David R. Jackson

Abstract:	A new Global Positioning System (GPS) antenna design based on the Reduced-Surface-Wave (RSW) microstrip antenna concept is introduced. GPS antennas designed according to this concept can significantly reduce the deleterious effects of multipath interference, particularly for low-angle multipath signals. In addition to retaining the advantages common to microstrip antennas, such as being light-weight, inexpensive, low-profile, and easy to manufacture, these new RSW-GPS antennas are shown to provide superior performance to the most commonly used precision GPS antennas, including choke-ring designs. The reduced horizon and backside pattern levels, and excellent circular polarization characteristics that can be realized indicate that this new antenna design is ideal for high-precision GPS applications.
Published in:	Proceedings of the 15th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2002) September 24 - 27, 2002 Oregon Convention Center Portland, OR
Pages:	2074 - 2081
Cite this article:	Basilio, Lorena I., Williams, Jeffery T., Jackson, David R., "A New GPS Microstrip Antenna with Low Susceptibility to Multipath Interference," Proceedings of the 15th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2002), Portland, OR, September 2002, pp. 2074-2081.
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