AN IMPROVED SYSTEM FOR CELLULAR RADIO COVERAGE AND AN ANTENNA FOR SUCH A SYSTEM

摘要

The invention discloses a system (200) for cellular mobile telephony, comprising a base station antenna (500, 600, 700) and a plurality of cells (203, 310, 320, 330). Each cell has an area defined by an azimuth (a₁, a₂) and a range (R₀ R'), and the first (310) and second (320) cell cover respective areas, said areas being defined by first (a₁,) and second (a₂) azimuths and first and second ranges (R₀) respectively. The first and second cells are essentially adjacent to each other in azimuth, and the system also comprises a third cell (203, 330) with an area coverage defined by a third azimuth and a third range (R'). The third azimuth is essentially the same as, and coinciding with, the total azimuths of the first and the second cell, but the third cell has a range coverage which is much smaller than the first or second range coverages.