Thermo-stable antenna for satellite navigation system

This paper proposes a novel microstrip GPS antenna with configuration of right hand circular polarization. The antenna uses ceramic substrate and is suitable for high-temperature environments. The main features of the antenna are: the low profile design of antenna ensures its suitability for surface mount-assembly into high-speed aerial vehicles; owing to the titanium alloy and thermal stable ceramic material, the antenna works well at 400 degrees Celsius and demonstrates excellent heat-resisting property; no welding is used during the assembly to ensure the reliability of the electric connection under high temperature impact; the center shorting pillar is designed to reduce the inductance of the feed probe and obtain excellent impedance matching characteristics. Through the simulation and experiments, the proposed GPS antenna exhibits excellent performance and proves its suitability for high temperature application.