Practical design for circularly polarized dual off-center aperture-coupled microstrip antenna for GPS application

摘要

This paper is dedicated to the design of circularly polarized dual off-center aperture-coupled Microstrip antenna for GPS application. First, the dimensions of the apertures and the square patch antenna are optimized. The global performance is then investigated after integrating a hybrid directional coupler. The return loss is better than 10 dB for a wide-band of 0.28 GHz whereas the realized gain is better than 8 dB. This antenna showed the capability to receive the signals of low altitude satellites.