Coaxial cables with RP-SMA connectors are often used as extensions for external antennas / with software defined radios.
What would happen if I were to connect two access points (wifi chips, via their antenna ports) using a coaxial cable? Would they be able to communicate? What should I take into account to not damage the devices?
I am trying to extract the angle of arrival from the channel state information reported by the wifi chip. Therefore I need to remove the phase shift introduced by the chips design. I can do this by measuring it, for that I need to receive a signal with the same phase at both antennas though. This is pretty hard in a multipath environment therefore the only solution I can think of at the moment is connecting both 802.11 chips via cable.