Expansion of the operating frequency range of compact trailing-wave slot strip antennas with circular polarization for high-precision positioning GLONASS, GPS, Galileo, and Beidou signals-based

A new approach aimed at expanding the operating frequency range of compact trailing-wave slot antennas with circular polarization designed to receive signals from global navigation satellite systems (GNSS) such as GLONASS, GPS, Galileo, and Beidou, is described. It is showed that the effect of increasing the antenna’s operational bandwidth exceeded 85%.