Provided herein is a metal frame transmitting electromagnetic waves or having a function of heat radiation, wherein the metal frame includes metal as its main substance, wherein the metal frame is applied to a device having a function of transmitting electromagnetic waves, and wherein the metal frame includes a slit formed on at least a partial area of the metal frame, wherein the slit forming area is larger than an area occupied by a wireless transmitting/receiving module for transmitting electromagnetic waves, and wherein an entire area occupied by the wireless transmitting/receiving module is located under at least part of the slit forming area.
According to the above-described invention, a slit is formed on at least a partial area of the metal frame, and, by overlaying the entire area of the wireless transmitting/receiving module within the slit area, the characteristic of transmitting electromagnetic waves is provided to the metal frame. Accordingly, the metal frame may be applied and used as an outer case of a device being provided with transmitting/receiving modules for wireless communication or wireless charging, and the metal frame may also be used as an interior material of the device.