Abstract:

A novel miniaturized dual band dual circular polarization microstrip antenna is designed by using diagonal corner cutting method on a square patch operating in two main modes to realize right circular polarization in the S band of Beidou satellite navigation system and etching asymmetric arm U-shaped groove structure to achieve left circular polarization and miniaturization in the L band of Beidou satellite navigation system.Compare to the ordinary circularly polarized antenna,the antenna is reduced in size by 24%.The simulation was performed using HFSS simulation software,showing that the antenna meets the Beidou system requirements for antenna performance.

Key words: Beidou navigation satellite system;microstrip antenna;circular polarization;miniaturization