An electronic device comprising: an external housing that comprises a first surface directed in a first direction, a second surface directed in a second direction opposite to the first direction, and a side surface configured to surround at least a part of a space between the first and second surfaces, wherein the side surface of the external housing comprises a first side and a second side; a printed circuit board, PCB, disposed within the external housing, wherein the PCB includes at least a first and a second feeding part; a communication circuit disposed on the PCB; at least one ground member (502, 503, 505) electrically coupled to the PCB; a first antenna radiator electrically coupled to the communication circuit, the first feeding part of the PCB and the at least one ground member, wherein the first antenna radiator forms a first part of the first side of the external housing; a second antenna radiator electrically coupled to the communication circuit and that forms a second part of the first side and at least a part of the second side of the external housing, wherein the second antenna radiator is directly adjacent to the first antenna radiator; and a non-conductive member disposed at both ends of the first antenna radiator on the first side, wherein the non-conductive member is configured to electrically isolate the first antenna radiator from the second antenna radiator, wherein the second antenna radiator comprises: a first portion located at a first distance from the non-conductive member and electrically coupled to the communication circuit and the second feeding part of the PCB; a second portion located at a second distance, that is greater than the first distance, from the non-conductive member and electrically coupled to the at least one ground member through a first ground piece; and a third portion located at a third distance, which is greater than the second distance, from the non-conductive member and electrically coupled to the at least one ground member through a second ground piece; wherein the second feeding part is configured to feed a first loop-type radiation area extending between the second feeding part and the first ground piece, and the second feeding part is configured to feed a second loop-type radiation area extending between the second feeding part and the second ground piece. an external housing that comprises a first surface directed in a first direction, a second surface directed in a second direction opposite to the first direction, and a side surface configured to surround at least a part of a space between the first and second surfaces, wherein the side surface of the external housing comprises a first side and a second side; a printed circuit board, PCB, disposed within the external housing, wherein the PCB includes at least a first and a second feeding part; a communication circuit disposed on the PCB; at least one ground member (502, 503, 505) electrically coupled to the PCB; a first antenna radiator electrically coupled to the communication circuit, the first feeding part of the PCB and the at least one ground member, wherein the first antenna radiator forms a first part of the first side of the external housing; a second antenna radiator electrically coupled to the communication circuit and that forms a second part of the first side and at least a part of the second side of the external housing, wherein the second antenna radiator is directly adjacent to the first antenna radiator; and a non-conductive member disposed at both ends of the first antenna radiator on the first side, wherein the non-conductive member is configured to electrically isolate the first antenna radiator from the second antenna radiator, wherein the second antenna radiator comprises: a first portion located at a first distance from the non-conductive member and electrically coupled to the communication circuit and the second feeding part of the PCB; a second portion located at a second distance, that is greater than the first distance, from the non-conductive member and electrically coupled to the at least one ground member through a first ground piece; and a third portion located at a third distance, which is greater than the second distance, from the non-conductive member and electrically coupled to the at least one ground member through a second ground piece; a first portion located at a first distance from the non-conductive member and electrically coupled to the communication circuit and the second feeding part of the PCB; a second portion located at a second distance, that is greater than the first distance, from the non-conductive member and electrically coupled to the at least one ground member through a first ground piece; and a third portion located at a third distance, which is greater than the second distance, from the non-conductive member and electrically coupled to the at least one ground member through a second ground piece; wherein the second feeding part is configured to feed a first loop-type radiation area extending between the second feeding part and the first ground piece, and the second feeding part is configured to feed a second loop-type radiation area extending between the second feeding part and the second ground piece.