parabolic [1]
Parabolic Antenna [2] are directional. They are ideal for
PointToPoint [3] BackBone [4] links running IBSS [5].
The higher the gain, the smaller the BeamWidth [6]
Typical gain range are 15dbi - 24dbi
It is a common misconception that it's the parabolic dish which
increases the gain of the antenna. Instead, it's the projected
aperture that provides the gain. Therefore, the higher the gain, the
larger the parabolic dish. Bending the parabolic section of the
antenna to be more concave will not increase the antenna's
performance.
Examples of these are GalaxyAntenna [7]
Links:
------
[1] http://www.hyperlinktech.com/web/copyrighted_images/hg2424g.jpg
[2] http://melbournewireless.org.au/?Antenna
[3] http://melbournewireless.org.au/?PointToPoint
[4] http://melbournewireless.org.au/?BackBone
[5] http://melbournewireless.org.au/?IBSS
[6] http://melbournewireless.org.au/?BeamWidth
[7] http://melbournewireless.org.au/?GalaxyAntenna
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