| 摘要 |
An antenna apparatus of the invention that consolidates a plurality of slot antennas offers a polarization diversity function and a simple construction of feed means, thereby attaining a small, sophisticated, highly efficient, and broadband-property antenna. The antenna apparatus has a pair of antenna elements 1 orthogonal to each other, the pair of antenna elements 1 being constituted by a slot 4 formed in a conductive plate 3 on a dielectric plate 2. The slot 4 has two linear portions 4c, 4d which extend straight with a predetermined width, a crossing 4a at which the two linear portions 4c, 4d cross orthogonal each other at the respective center in the longitudinal direction, and fan-shaped portions 4b that extend from the ends of each of the two linear portions 4c, 4d while expanding gradually than the width of the two linear portions 4c, 4d.
|
