Abstract
With the merits of wide coverage, huge capacity of communications, good transmission quality, etc., Global Satellite Navigation System (GNSS) plays a vital role in the fields, such as the aviation, marine, mapping, timing and information services. As the essential part of satellite navigation system, Antenna’s overall performance is good or bad which have a significant impact on Navigation and Positioning System. In this paper, a multi-mode circular polarization GNSS antenna with single-feed stacked patch combined stub technology is presented. By inserting different cross shape stubs, the top square patch performs GNSS high frequency multi-band circular polarization, and the right-hand circular polarization mode in the GNSS low frequency is achieved through inserting different cross shape stubs in the center of the lower square patch. Theoretical analysis and simulation results show that the proposed multi-mode circular polarization antenna can meet multi-system positioning needs of the terminal users of satellite navigation.
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