Devices, systems, and methods are provided for improving antenna isolation for collocated antennae. A device may include a first radio associated with a first antenna to transmit and receive first wireless signals using a first wireless communication technique. The device may include associated with a second antenna to transmit and receive second wireless signals using a second wireless communication technique. The device may include a multi-antenna isolation structure having a first portion and a second portion separated from the first portion, the first portion and the second portion are able to prevent the first antenna from receiving a portion of current associated with the second antenna.