Abstract
This paper presents a quarter-wave patch antenna for GPS application which is realized by using shorting pins. The impact of the shorting relies upon the distance between the shorting posts, the radius of each shorting post, the number of shorting posts used and the height of the shorting posts which is determined by the thickness of the substrate used (which is 1.6mm for FR-4 substrate). A Right Hand Circularly Polarized Microstrip patch antenna with feed line for GPS frequency (1.575 GHz) is designed, simulated and fabricated. Simulation is done using ADS (Advanced Design System) and a fabricated prototype of the both the shorted and unshorted proposed antenna have been measured using Agilent Vector Network Analyzer.
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