Abstract: A system and method for decoupling radio frequency (“RF”) coils arranged in proximity to each other is provided. The decoupling is achieved using a magnetic wall that includes resonators arranged on an electrically insulating substrate. The magnetic wall is placed between the RF coils. When an electromagnetic field produced by one of the RF coils is incident on the magnetic wall, the magnetic wall acts to filter the incident electromagnetic field by providing a bandstop condition to the field responsible for coupling energy between coil elements. The magnetic wall is modular, and an array of such magnetic walls can be used to enclose individual RF coil elements, or sub-arrays of two or more RF coil elements.