1 Answers
Skew is a term used in antenna engineering. It is a technique to improve the horizontal radiation pattern of a high power transmitter station.
In a high power VHF or UHF station, usually the antenna system is constructed to broadcast to four directions each separated 90° from each other. So the directivity of the antenna system resembles a four leaf clover. While settlements within the main lobe receive enough energy, the energy received by the settlements between the main lobes may be 6 dB less.
One popular method to solve the problem is to skew the antenna panels symmetrically around the central axis of the mast. Usually a skew of λ/4 gives the desired almost-uniform horizontal radiation pattern. But in cases where more than one RF signal is applied to antenna system , the improvement in the horizontal radiation pattern may be inadequate for some signals.