Antenna Systems & Technology - Spring 2014 - (Page 4)
EDITOR'S CHOICE
Cobham Releases Dual-Polar 'White Space' UHF
Sector Antenna
Cobham Antenna Systems, Microwave Antennas (Cobham) has developed a dualpolar 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 soon
be available from Cobham, in 2 GHz, 3 GHz
and 5 GHz bands.
Cobham's wideband SA11-90-0.6VH/2178
antenna provides both vertical and horizontal polarizations. 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 to 700
MHz, 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 analog 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 recognized 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 well suited for M2M applications.
Having high gain (11 dBi peak) and wide area coverage, with a 90°
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° 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 polarized 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 1,550 mm by 550 mm by 232 mm and
approximate weight, including mounting kit, of 20 kg, this means shipping costs can be reduced and ease of installation increased.
4
Antenna Systems & Technology Spring 2014
Volume 17 / Issue 1
Editor & Publisher
David Webster
Director of Content
Nick Depperschmidt
Senior Editor
Shannon Given
Associate Editor
Heather Williams
News Editors
Sue Hannebrink, Scott Nash
Scott Webster, Robert Schaudt
Advertising Sales and Marketing
Robert Schaudt, Advertising Sales Manager
Administration
Marsha Grillo, Director
Julie Williams, Office Manager
Support Services/Circulation
Marc Vang, Director
Ross Webster, Data Entry
Webmaster
CJ Brewer
Production
Julie Hammond
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Table of Contents for the Digital Edition of Antenna Systems & Technology - Spring 2014
Editor’s Choice
What's So Exciting About the Future of M2M? Everything
Antenna Design for LTE Enabled Tablets
Recent Progress on Plasma Antennas
Guest Column: Don't Let Your Choice of Tool Hinder Your Cable and Antenna Testing
Antennas
Components/Subsystems
Short-Range Wireless
Software / System Design
Test & Measurement
Industry News
Marketplace
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