Antenna Configurations for a C-Band Global Navigation Sattelite System

C. Bartone, T. Stansell

Abstract:	This paper investigates various antenna configurations for a C-Band Global Navigation Satellite Systems (GNSS) and focuses on various user antenna configurations. A GPS L1 link is used as a baseline configuration under a constant SV transmitter power, antenna gain, and similar link loss assumptions to show that the power density prior the user antenna is the same for the C-Band GNSS as compared to the comparable L-band GNSS. Additionally, if the user antenna has the same effective aperture size, then, the same received power at the antenna output will be obtained. It will be shown that if the real estate (i.e., footprint of existing L-Band user antennas) is maintained (and not allowed to decrease as the frequency increases from L to C-Band), a C-Band controlled reception pattern antenna (CRPA) can be implemented in the same size as an L-Band fixed reception pattern antenna (FRPA). Several different FRPA footprints and the common 14” diameter CRPA footprint configurations are investigated. Of significant importance, is the fact that while the power received for the C-Band GNSS will be similar, the increased frequency will enable CRPAs to be implemented in existing L-Band FRPA footprints allowing for interference/jamming and both carrier and code phase multipath mitigation. For military platforms that currently have a 14” diameter L-Band CRPA installed, a 91-element C-Band CRPA can be accommodated and will provide increased directivity that can be utilized for increased interference/jamming and both carrier and code phase multipath mitigation.
Published in:	Proceedings of the 23rd International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2010) September 21 - 24, 2010 Oregon Convention Center, Portland, Oregon Portland, OR
Pages:	2465 - 2476
Cite this article:	Bartone, C., Stansell, T., "Antenna Configurations for a C-Band Global Navigation Sattelite System," Proceedings of the 23rd International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2010), Portland, OR, September 2010, pp. 2465-2476.
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