Patent ID: 8624784

Claim:
A microstrip array antenna including a dielectric substrate, on a back face of which a conductive grounding plate is formed, and a strip conductor formed on the dielectric substrate, wherein the strip conductor comprises a feeding strip line which is linear and extends in a predetermined extension direction, and at least two radiation antenna elements which have a predetermined length, at least one of the radiation antenna elements being connected with one side of the feeding strip line, and at least one of the radiation antenna elements being connected with the other side of the feeding strip line, longitudinal directions of the radiation antenna elements are parallel to each other and are at an angle of other than 90° with respect to the extension direction, the feeding strip line has a partially or totally bending shape and fully extends in the extension direction so that the radiation antenna elements are connected with the feeding strip line at the same angle, the radiation antenna elements are connected with the feeding strip line so that the longitudinal directions of the radiation antenna elements are at an angle of 90° with respect to the feeding strip line, and the radiation antenna elements connected with the two sides of the feeding strip line are alternately arranged along the feeding strip line.