| 摘要 |
<p>Provided is a circular polarized antenna device wherein deterioration of radiation characteristics is reduced. An antenna device (10) is composed of a rectangular ground plate (14) having long sides and short sides, and an antenna element (16) disposed in the vicinity of the corner portion of the ground plate. The antenna element (16) is disposed such that the longitudinal direction of the antenna element is along the edge of the ground plate (14). When the electric length of the long side of the ground plate (14) is expressed as (L), and the electric length of the short side of the ground plate (14) is expressed as (W), the ratio (L/W) is within the range of 1.73-2.75.</p> |
