Antenna apparatus
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United States of America Patent
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-
Nov 18, 2003
Grant Date -
Feb 21, 2002
app pub date -
Jul 18, 2001
filing date -
Jul 18, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
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.
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