Circularly-Polarized Metasurface Antenna in Cavity for GNSS Applications

摘要

An innovative circularly-polarized (CP) compact antenna is presented here, with the aim to cover three GNSS systems simultaneously, namely Galileo E1, GLONASS G1 and GPS L1, corresponding to a minimum impedance bandwidth of 60 MHz. The proposed design consists of a metasurface-inspired antenna, embedded in a metallic cavity, with a total aperture size of 0.21 λ0 × 0.21 λ0 centered at the frequency of 1578 MHz. The simulation results demonstrate that it is possible to reach a much wider bandwidth (180 MHz). Experimental results successfully validate the proposed design.