Mechanical tilt means physically or manually downtilting the antenna. Our focus of discussion will be horizontal beam and not vertical beam as shown in the figure-1.
The downtilt is most beneficial and the same has been taken into consideration through out The downtilt is depicted in the figure-1. The tilt applied on the downward side is referred as downtilt. The tilt applied on the upward is referred as uptilt and This effect leads to degradation in the quality of service requirement of the cells.Īs a solution to this, concept of tilt has been tried by RF engineers.ĭictionary meaning of tilt is "incline or bend from vertical position". Providing the service to mobile users in different regions using different selective beams.īut the spread of radiation pattern of antenna will have adverse effect in adjacent sectors of the same cell as well asĪdjacent cells. Spatial isolation can be achieved by focusing the beam in a particular region and hence incrase the cell capacity by But they have drawbacks of increase in intra cell interference. Initially frequency reuse was available for omnidirectional antennas which was creating inter cell interference.Īfter the advent of sector array antenna frequency re-use have become more efficient yielding the better cell capacity within aĬell.
RF engineers have developed the techniques known as fequency reuse and spatial isolation. Initiated concerns to increase the network capacity.