To me they appear to just be two 60 or 90 deg antennas covering the same azimuth. Don’t you want or need the antenna to cover different areas to get the most out of ePMP beamforming/MU-MIMO? Wouldn’t then covering 90 deg with two 45 deg horns covering different azimuths be better as you then have two distinct groupings of SMs for the AP to talk to, or even two 60 deg horns that slightly overlap?
That is fine, but isn’t MU-MIMO and Beamforming not yet enabled on TDD mode? My question is how does this work once MU-MIMO and Beamforming are enabled as I would expect having two sectors covering different azimuths would work better than having two sectors cover the exact same area.
You must have not read the entire review including test criteria. The tests were performed on e3k 4x4 in TDD mode which supports MU-MIMO. The answer is that it doesn’t appear to work well… at least not as well as the OEM antenna.