An electronic device according to an embodiment may comprise at least one processor, wherein a first antenna comprises: a first conductive patch disposed on a first layer; a first transmission line disposed on the first layer and electrically connected to one point of the first conductive patch; a ground disposed on a second layer; and a dielectric disposed on a third layer between the first layer and the second layer, the first conductive patch has a shape in which a first region which includes a first edge and has a second size smaller than a first size, and a second region which includes a second edge positioned in a diagonal direction of the first edge and has the second size are removed from a rectangle having the first size, and the at least one processor transmits and/or receives at least one of a first RF signal having a first polarization characteristic and a second RF signal having a second polarization characteristic. Various other embodiments may be possible.