Electronic device for extending operation range of antenna

An electronic device comprising:

• a foldable housing including a first housing, a second housing, and a hinge module, including a hinge, disposed between the first housing and the second housing;
• a first coil positioned in the second housing and including a designated n number of turns;
• a second coil positioned in the first housing, including a designated m number of turns less than the n turns, and connected in series to the first coil;
• a communication module, comprising communication circuitry, electrically connected to the first coil and the second coil;
• a processor, comprising processing circuitry, configured to control the communication module;
• a main printed circuit board including the communication module and positioned in the first housing;
• a first flexible circuit board including the first coil and positioned in the second housing;
• a second flexible circuit board including the second coil and electrically connected to the main printed circuit board in the first housing;
• and
• a wire connection member including at least one wire disposed to cross over the hinge module to extend from inside the first housing to inside the second housing, and electrically connecting the main printed circuit board and the second flexible circuit board to each other,
• wherein the communication module comprises first and second output terminals, wherein one end of the first coil is electrically connected to the first output terminal, and an opposite end of the first coil is electrically connected to one end of the second coil via the at least one wire,
• wherein an opposite end of the second coil is electrically connected to the second output terminal,
• wherein the first flexible circuit board further comprises a first shielding sheet,
• wherein the second flexible circuit board further comprises a second shielding sheet, and
• wherein a thickness of the first shielding sheet is greater than a thickness of the second shielding sheet.