Patent attributes
An antenna device according to an aspect of the present invention includes dielectric plates, a first to fourth vias, lines, a conductor plate, opening sections, and an antenna element for transmission. The first to fourth vias respectively pierce through the dielectric plates corresponding to the vias and transmit high-frequency signals. A high-frequency signal flowing in the first via is transmitted to the element via a line and an opening section. The line is provided on an upper surface of a dielectric plate and is connected to an upper end portion of the first via. The opening section is provided right above a part of the line. A high-frequency signal flowing in the second, the third, and the fourth vias is transmitted from another line. The line is provided on an upper surface of another dielectric plate and is connected to an upper end of the second via.
