GNSS Sector Antenna for Interference Mitigation and Localization Using a High-Impedance Reflector

There are many applications where the reception of global navigation satellite system (GNSS) signals is crucial. In such cases, the capability to reduce the interference (both unintentional or hostile) is critical. The proposed sector antenna offers a stable radiation pattern with no beam steering across the frequency band and good impedance matching. It also benefits from a high impedance reflector, which allows the antenna to provide broadband operation and low-profile compact geometry. Furthermore, seven of these sector antennas were placed in a heptagonal shape and combined with a broadband crossed dipole. As a result, the designed antenna system can reduce vertically polarized interference by approximately 45 dB in the required directions.