An electronic device is provided. The electronic device includes an antenna, a wireless communication module electrically connected to the antenna, a flexible printed circuit board (FPCB) including a first feeding element and a second feeding element which are electrically connected to the wireless communication module, a substrate disposed above the first feeding element and the second feeding element, a first conductive pattern including a first coupling hole and a second conductive pattern including a second coupling hole, which are formed on the upper surface of the substrate, a first coupling fastener configured to penetrate the first coupling hole and the first feeding element and electrically connect the first conductive pattern and the first feeding element, and a second coupling fastener configured to penetrate the second coupling hole and the second feeding element and electrically connect the second conductive pattern and the second feeding element.