An electronic device and method of fabrication are provided. The electronic device comprises a substrate, a patterned conductive layer serving as an antenna layer formed on the outer surface of the substrate, electrically connected with a printed circuit board (PCB) for sending or receiving a wireless signal, wherein the substrate is placed between the patterned conductive layer and PCB. The patterned conductive layer may be electrically connected to the PCB through a hole in the substrate by a connecting piece. The substrate may be a housing of the electronic device.