Ask for a quote at sales@itm-components.co.uk

The Benefits of using L-com’s Cross Polarized Antennas

by Stuart Berry January 12, 2017

Cross Polarised Antennas

Received signals at base station antennas tend to be elliptically polarized in a way that more closely resembles vertical polarization than horizontal polarization. This creates a common problem with dual polarized base station antennas since the vertically polarized antenna element generally maintains a stronger receive signal than the horizontally polarized antenna element.

This can be overcome by slanting the orthogonal polarized antenna elements to +/- 45 degrees. By slanting one of the antenna elements 45 degrees to the left and the other 45 degrees to the right, improved equality in received signal levels can be achieved. This can help improve coverage in urban environments.

Another advantage to using these types of cross polarized antennas is in co-located wireless system installations. Since multiple antennas are used within the same facility or tower, this often creates interference issues among antennas which are usually Vertically or Horizontally polarized. Using 45 degree slanted cross polarized antennas on the client side as well on the base station side can greatly reduce interference and improve performance.

Base Cross Polarised Antenna

 

Some of L-com's antennas also feature spatial diversity in addition to being cross polarized. This is useful for operating in areas susceptible to the effects of multi-path interference. By providing spatial diversity, the radio's internal circuitry can select between the two receive antennas for better wireless reception.

In the case of 802.11n or MIMO, two or more spatially or polarization diverse antennas are required for the radio to operate at its highest data rate.

L-com have two HyperLink brand 2.4 GHz Spatial Diversity/Cross Polarized Sectorial Panel Antenna models. These outdoor all weather antennas are designed with two identical and independent internal cross polarized antennas fed via (4) connectors. They are:

HG2412SXP-120 - 2.4 GHz, 12 dBi, 120 Degree Beam Width

HG2416SXP-090 - 2.4 GHz, 16 dBi, 90 Degree Beam Width

Common features of these antennas include:

  • Two independent cross polarized (X-Pol) antennas within one enclosure
  • Spatial diversity
  • All weather operation
  • Heavy duty steel mounting bracket with easy elevation and tilt adjustment
  • Spatial diversity/X-Pol feed system - (4) N-Female connectors

Please contact our Techsales Team for more information about these or other antennas in the L-Com range.




Stuart Berry
Stuart Berry

Author



Also in News

New High-Flex, Continuous Motion, Braided Shield Ethernet Cable Assemblies

by Stuart Berry September 17, 2018

Shielded High Flex Ethernet Patch Cords

Designed for applications where standard patch cables would fail, these exclusive ultra-flexible cable assemblies are rated to 10 million flex-cycles at 1.82" (46.4mm) for continuous motion and automation applications.

Continue Reading

Where would you use an antenna array?

by Stuart Berry August 15, 2018

Three Sectorial Antennas

The major benefit of using an antenna array over a single Omni directional antenna is that the antenna array provides radiation patterns that a single Omni antenna would not. In most cases, antenna arrays provide greater coverage than a single Omni antenna could.

Continue Reading

The Buyer’s Guide to NEMA Industrial Enclosures

by Stuart Berry August 02, 2018

Enclosure Features Diagram

As our climate becomes more extreme, there is an ever greater need to ensure that your wired and wireless communications equipment can stand up to the elements. If you are thinking about getting stronger protection for your equipment, you may find the following step by step guide useful.

Continue Reading