A radio module for use in an electronic device is disclosed. The radio module has a shield for reducing electromagnetic interference on the radio module. The shield may include a heat-spreading layer made of a material including graphite. The heat-spreading layer may spread heat generated by the radio module. The shield may also include a reflective layer overlapping the heat-spreading layer and configured to reflect electromagnetic energy to the heat-spread layer. The heat-spreading layer is also configured to absorb at least a portion of the electromagnetic energy, thereby reducing the electromagnetic interference on the radio module.