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Cobham Announces Dual-Polar 'White Space' UHF Sector Antenna
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February 2014
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 x232mm and
approximate weight, including mounting kit, of 20kg, this means shipping
costs can be reduced and ease of installation increased.
pAbout
Cobham plc
Cobham protects lives and livelihoods with its
differentiated technology and know-how, operating with a deep insight
to customer needs, and agility. The Group offers an innovative range
of technologies and services to solve challenging problems across commercial,
defence and security markets, from deep space to the depths of the ocean.
It has market leading positions in air-to-air refuelling; aviation services;
audio, video and data communications, including satellite communications;
defence electronics; life support and mission equipment. The most important
thing Cobham builds is trust.
About Cobham Antenna
Systems
For more than 60 years Cobham Antenna Systems has
been a leader in the design and manufacture of communication systems
and antennas. Innovative communication, navigation, jamming, electronic
warfare, telemetry and radar antennas serve commercial aviation manufacturers
and operators, defence contractors, emergency response organisations
and law enforcement agencies. Advanced antenna technology for satellite
communications, avionics, radar and surveillance applications connect
military and commercial aircraft, naval vessels, vehicles and mobile
teams with the world through high-speed data, voice and video. Cobham
also has a wide range of standard, composite masts, antenna pointing
devices, and vehicle mounting systems and high performance composite
structures and products for the aerospace industry, radomes and aircraft
components, high temperature aircraft engine products, rotorcraft blade
components, unmanned aerial vehicle airframes and sub-components. Cobham
Antenna Systems is a leading supplier of flat plate array antennas,
standard and custom passive RF components and assemblies, and specialised
microwave and electro-mechanical rotating devices. These include RF
rotary joints, gear-driven pedestals and RF rotating subsystems used
in military and air traffic control radars, and telecommunications systems.
Contact for Technical Queries:
Head of Business Development
Cobham Antenna Systems
Microwave Antennas
Newmarket, UK
Malcolm
Ware
+44 1638 732172
malcolm.ware@cobham.com
Posted February 26, 2014
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