Electronic device including antenna using housing thereof

An electronic device, comprising:

• a housing including a first plate having a first width, a second plate that is opposite to the first plate, and a side surface that surrounds a space between the first plate and the second plate;
• a coil antenna accommodated in the interior of the housing;
• and
• a wireless communication circuit configured to feed electric power to the coil antenna,
• wherein the first plate includes:
• a first conductive area having the first width and formed of a conductive material;
• a slit having the first width and formed adjacent to the first conductive area;
• a first area having the first width, being adjacent to the slit, and formed of a metal oxide;
• and
• a second conductive area having the first width, being adjacent to the first area, and formed of the conductive material that partially overlaps the coil antenna,
• wherein the first area overlaps the coil antenna in at least a partial area, and the conductive material is disposed below the slit and the at least partial area of the first area,
• wherein the conductive material is disposed below the at least partial area of the first area, and the first conductive area and the second conductive area are electrically connected by the conductive material, and
• wherein the second conductive area and a third area operate as different antenna elements by the conductive material disposed in the area the at least partial area of the first area.