Abstract
This paper presents the design of a dual-band microstrip antenna with low wide-angle axial-ratio. The antenna is designed for global positioning satellite operations at 1227MHz (L2), 1575MHz (L1) and 1176MHz (L5, available after 2007). This antenna has another advantage of a much wider band in both VSWR and 3dB axial-ratio compared with single-fed GPS antennas. Details of the design, simulated and experimental results of this GPS antenna are presented and discussed. The measured results conflrm the validity of this design, which meet the requirement of GPS applications.
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