Polarisation refers to the angle in which the radio waves are transmitted from the antenna, vertical polarisation refers to waves that are propagating up and down, horizontal polarisation refers to waves that are propagating left and right, and cross polarisation refers to waves propagating at a 45 degree angle. Most cellular masts in the UK, use cross polarised antennas and due to signal correlation within LTE technology, antennas can normally receive all types of signal.
Antennas will be manufactured for single, dual or cross polarisation. For dual polarised antennas, there may be a H and V label on the antenna ports. Typically the V would connect to the main cellular input of the route and the H would connect to the aux input. However, in congested areas better performance may be obtain by switching these connections.
