Circularly polarized crossed dipole GPS navigation antenna

The utility model discloses a circularly polarized crossed dipole GPS navigation antenna. The antenna comprises an upper dielectric substrate, a lower dielectric substrate, a middle dielectric substrate, a radiation unit, a parasitic unit and a feed unit. The upper dielectric substrate and the lower dielectric substrate are arranged in parallel. Wherein the middle dielectric substrate is arrangedbetween the upper layer dielectric substrate and the lower layer dielectric substrate and is respectively perpendicular to the upper layer dielectric substrate and the lower layer dielectric substrate, the lower surface of the lower layer dielectric substrate is provided with a reflecting plate, and the antenna has the advantages of being small in size, large in bandwidth, wide in wave beam and the like, and can be well applied to GPS satellite navigation terminal equipment. 本实用新型公开了一种圆极化交叉偶极子GPS导航天线，包括上层介质基板、下层介质基板、中间介质基板、辐射单元、寄生单元及馈电单元，所述上层介质基板及下层介质基板相互平行设置，所述中间介质基板设置在上、下层介质基板之间，并分别垂直于上、下层介质基板，所述下层介质基板的下表面设置有反射板，本实用