 Professional
Omni Antennas
Highly efficient, these aesthetically pleasing wifi
antennas cover 360 degrees are ideal for outdoor pole
mounting applications. The 2.4GHz and 2.6GHz omni antennas
are also available with a 3-degree downtilt.
These 802.11 compatible antennas are available in a
range of frequencies, and are suitable for point to
point links, point to multi point links, ISM, WIFI,
WLAN, MMDS, data/telephony and CCTV. Our panel antennas
are IEEE 802.11 compliant, and wireless LAN system,
Bluetooth, Wimax and wifi system compatible
Competitive Comparison
of 2.4GHz Omni-Directional
When designing these antennas, great care was taken
with the radiation patterns, both in the 360 degree
direction and in the elevation plane. (See patterns
below)
Many competitive omni-directional antennas considerably
over claim their gain figures. Very often the radiation
pattern is not smoothly omni but has shallow nulls in
it. In the elevation direction a feature known as "frequency
scan" occurs. This is where different frequencies
reach maximum gain at different elevation angles. From
the subscribers point of view this shows itself by having
different gain figures at one end of the band as against
the other. For example the antenna might be as much
as 8 dB less gain at the 2.485Ghz end of the band as
against the 2.4Ghz end. Even at the 2.4Ghz end of the
band the gain could be as much as 3dB les than the specs.
claim. All this results in poor system performance and
high bit error rates.
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