Cobham Antenna Systems, Microwave Antennas (Cobham), a leading antenna producer, has developed a dual-polar UHF sector antenna for use in the ‘White Space’ frequency bands. This is the first product in a range of similar dual-polar base station antennas, which will be available from Cobham soon, in 2GHz, 3GHz and 5GHz bands.

Cobham Antenna Systems, Microwave Antennas (Cobham), a leading
antenna producer, has developed a dual-polar UHF sector antenna for
use in the 'White Space' frequency bands. This is the first product
in a range of similar dual-polar base station antennas, which will
be available from Cobham soon, in 2GHz, 3GHz and 5GHz bands.
Cobham's wideband SA11-90-0.6VH/2178 antenna
provides both vertical and horizontal polarisations. In conjunction
with radios, having two-port diversity, it can provide
non-line-of-sight (NLOS) connectivity and reliable communications
in challenging environmental conditions.
The SA11-90-0.6VH/2178 antenna covers the entire frequency range
470-700MHz, meaning that it can be used in situations where a
number of channels are spaced widely apart. With fewer antennas
needed, operators and installers will incur lower inventory and
installation costs.
The 'White Space' frequency band has been opened following the
discontinuation of analogue television transmissions in some
countries. The available frequencies have been allocated for both
licensed and unlicensed uses producing exciting opportunities in
long distance communication.
The UHF band is recognised for the ability to provide
communications over large distances; across remote regions of land
or sea; and good penetration in built-up areas. The band offers
high data rates, making it extremely suitable for machine to
machine (M2M) applications.
Having high gain (11dBi peak) and wide area coverage, with a 90
degree beamwidth the SA11-90-0.6VH/2178 antenna can be used
stand-alone to provide sector coverage. Used in a configuration,
four units are required to achieve 360 degree coverage. With
appropriate power dividers and phase-matched cables, several
antennas could also be stacked vertically, producing a narrower
elevation beamwidth and increased gain. These are available from
Cobham.
Cobham has integrated both sets of the polarised elements within
the same vertical aperture producing a compact, lightweight and
rugged antenna. With a UV resistant radome it is designed for long
term deployment. Having dimensions of 1550 x 550 x 232mm and
approximate weight, including mounting kit, of 20kg, this means
shipping costs can be reduced and ease of installation
increased.
For more information please contact Cobham Antenna Systems,
Microwave Antennas:
T: +44 (0)1638 732177
E: newmarket.sales@cobham.com
W: www.cobham.com/antennasystems/microwaveantennas
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