Talk:Sector antenna

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How does it work?

Can someone add a description of the internal construction and how it works? I'd guess its a waveguide slot antenna design. --Chetvorno^TALK 07:10, 23 December 2010 (UTC)[reply]

Also, can anyone explain why the typical cell sector antenna you see on towers seems to use 3 or 4 of these antennas? The radiation pattern seems to show that the horizontal beam width (HPBW) is about 60°, so one would assume that only two would be needed to cover the typical sector width of 120°. Are extra antennas used to provide better coverage, or emergency redundancy, or are separate antennas used for transmitting and receiving, or what? --Chetvorno^TALK 01:16, 5 January 2011 (UTC)[reply]