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International Journal of Innovative Research and Development, Vol 3, No 11 (2014), Pagination:
Abstract
Pseudolite based positioning is designed to be used as an alternative to GPS when receiver faces low position accuracy in areas where the satellite signals are less available or non-existent.. However, one of the major problems faced by the pseudolite based navigation system is “Multipath” effect. It is mainly caused by reflections of the signal from the ground or near-by building or other obstacles which limits the effective range of truthful positioning. In this paper, design of Inset-fed ceramic patch array antenna using HFSS has been proposed to overcome the problem. Simulation results present the influence of increase in element number and influence of inter-element spacing on the design. Also, radiation patterns for rectangular and elliptical patch array antenna using different feeds are simulated, presented and comparatively analyzed in this paper.
Keywords
Pseudolite, Multipath, Patch Array, HFSS, Gain, Directivity
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