Cross dipole antenna and composite antenna
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 25, 2004
Grant Date -
Oct 31, 2002
app pub date -
Nov 13, 2001
filing date -
Mar 10, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A first dipole antenna consisting of dipole antennae 2a, 2b and a second dipole antenna consisting of dipole antennae 2c, 2d are disposed so as to be approximately orthogonal at approximately .lambda./4 intervals on a reflecting plate 6 having a diameter of approximately .lambda./2 or more. By disposing a plurality of non-feeding elements 3a to 3h around the first dipole antenna and second dipole antenna and isolating them by approximately .lambda./4, the transmission gain and axial ratio in a low elevation angle can be improved.
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