An electronic device (101, 400) comprising: a display (160, 430) disposed on a front surface of the electronic device and a front plate (202, 420) disposed on the display; a back plate (211, 480) disposed on a back surface of the electronic device; a side member (218, 410) placed between the front plate and the back plate and forming an outer appearance of the electronic device together with the front plate and the back plate; a first antenna module including a plurality of first patch antenna elements (640, 840) and a plurality of first dipole antenna elements (645, 845) configured to transmit/receive a signal in a first frequency band, and placed adjacent to the side member and on an upper portion of the electronic device such that the plurality of first patch antenna elements face the back plate; a second antenna module including a plurality of second patch antenna elements configured to transmit/receive the signal in the first frequency band, and placed adjacent to the side member such that the plurality of second patch antenna elements face a left side of the electronic device when viewing the electronic device from the back surface, wherein the second patch antenna elements are disposed on a front surface of a first printed circuit board of the second antenna module and connected to a first communication circuitry disposed on a rear surface of the first printed circuit board facing a right side of the electronic device; and a third antenna module including a plurality of third patch antenna elements configured to transmit/receive the signal in the first frequency band, and placed adjacent to the side member such that the plurality of third patch antenna elements face a right side of the electronic device when viewing the electronic device from the back surface, wherein the third patch antenna elements are disposed on a front surface of a second printed circuit board of the third antenna module and connected to a second communication circuitry disposed on a rear surface of the second printed circuit board facing the left side of the electronic device. a display (160, 430) disposed on a front surface of the electronic device and a front plate (202, 420) disposed on the display; a back plate (211, 480) disposed on a back surface of the electronic device; a side member (218, 410) placed between the front plate and the back plate and forming an outer appearance of the electronic device together with the front plate and the back plate; a first antenna module including a plurality of first patch antenna elements (640, 840) and a plurality of first dipole antenna elements (645, 845) configured to transmit/receive a signal in a first frequency band, and placed adjacent to the side member and on an upper portion of the electronic device such that the plurality of first patch antenna elements face the back plate; a second antenna module including a plurality of second patch antenna elements configured to transmit/receive the signal in the first frequency band, and placed adjacent to the side member such that the plurality of second patch antenna elements face a left side of the electronic device when viewing the electronic device from the back surface, wherein the second patch antenna elements are disposed on a front surface of a first printed circuit board of the second antenna module and connected to a first communication circuitry disposed on a rear surface of the first printed circuit board facing a right side of the electronic device; and a third antenna module including a plurality of third patch antenna elements configured to transmit/receive the signal in the first frequency band, and placed adjacent to the side member such that the plurality of third patch antenna elements face a right side of the electronic device when viewing the electronic device from the back surface, wherein the third patch antenna elements are disposed on a front surface of a second printed circuit board of the third antenna module and connected to a second communication circuitry disposed on a rear surface of the second printed circuit board facing the left side of the electronic device.