Broadband microstrip antenna and antenna array

摘要

The invention discloses a broadband microstrip antenna and an antenna array. The antenna comprises a rectangular dielectric material substrate, a radiation patch formed on the upper surface of the dielectric material substrate, a coupling patch and metal supporting pieces. The coupling patch is formed on the upper surface of the dielectric material substrate and extends to the position away from the radiation patch by a preset distance from one side of the dielectric material substrate. The metal supporting pieces are arranged on the lower surface of the dielectric material substrate and extend downwards to be grounded from the edge of the lower surface of the dielectric material substrate, and an air layer of preset thickness is formed between the lower surface of the dielectric material substrate and the ground. According to the scheme, the directivity of the broadband microstrip antenna can be improved under a small size.