A New Compact Dual Band GPS Patch Antenna Design Based on Minkowski-Like Pre-Fractal Geometry

Abstract

A low profile compact microstrip antenna for GPS (L1/L2) application has beenpresented in this paper. The proposed antenna design is based on the 3rd iterationMinkowski-like pre-fractal geometry. The resulting antenna design offers a compact size,low profile and light weight making it suitable for use in handheld applications. Antennaperformance has been evaluated using the EMSightTM from the Applied Wave Research.The proposed antenna has shown to possess two resonance bands (for return loss .-10dB) covering the two GPS bands. Reasonable radiation characteristics have been achievedat the GPS frequencies (L1:1575.42 } 10.23 MHz, L2:1227.60 } 10.23 MHz) with goodcircular polarization characteristics. Realized circular polarization Bandwidths (for axialratio . 3 dB) are found to cover adequately those required for these GPS bands.