Electronic device including antenna device

Electronic device in accordance with various embodiments of the present invention, the case member; One side of the case member, is disposed around the frame to form a side wall; And it may include an antenna device for transmitting and receiving radio signals, The antenna device of the first radiation conductors (radiation conductor) to form part of the frame; Wherein it arranged adjacent to the first radiation conductor and the second radiation conductor to form the other portion of the frame; The third radiation conductor is provided on the case member is connected to the power supply portion of the electronic device with the first radiation conductor; And it is provided on the case member, and a fourth radiation conductor connected to the ground of the electronic device, At least a portion of said fourth radiation conductor may be located adjacent to the second radiation conductor. Electronic device as described above can be variously implemented according to an embodiment.