There are APs that have dual band antennas and seem to offer simultaneous 2.4+5 GHz operation. I wonder how this simultaneous dual band operation technically works (2 radios using one antenna.) A sample AP may have 2x2 MIMO with two antennas altogether. Are the frequencies from the antenna filtered and then fed to the correct radio? Are APs with dedicated (single band) antennas better? (2x2 MIMO with 4 antennas in total.) If so, in which way?
These AP products seem to advertise combined 2.4+5 GHz bandwidth speeds which makes me feel it is possible to transmit different data on both frequency bands with single antenna.
Sample products:
