Provided is an electronic device having an antenna according to an embodiment. The electronic device may comprise a first and a second ground plane arranged on different layers of a multi-layer substrate and configured to be connected to each other through vias spaced a predetermined distance apart from each other. The electronic device may comprise a signal line arranged on the same plane as the first ground plane which is disposed at the upper side among the first and the second ground plane. The electronic device may comprise a radiator configured to be electrically connected to the signal line and emit a signal. The first ground plane may be disposed at only one region of one side region and the other side region of the signal line in a predetermined section.