An example embodiment provides an antenna module including at least one antenna array including a first dielectric having a plate shape; a second dielectric disposed on a top of the first dielectric, wherein a top of the second dielectric is separated from the top of the first dielectric by a first distance; a first radiator disposed on the top surface of the second dielectric; and a feeder disposed on the first dielectric and on the second dielectric to supply an RF signal to the first radiator; and a feeder disposed on the first dielectric and the second dielectric and configured to supply a radio frequency (RF) signal to the first radiator.