Electronic device including foldable housing and antenna

An electronic device comprising:

• a foldable housing including a first housing part, a second housing part, and a third housing part;
• a flexible display disposed on the foldable housing;
• wireless communication circuitry;
• a first conductive portion forming at least a portion of a first lateral side of the first housing part and including a first feeding point and a first ground point;
• a second conductive portion forming at least a portion of a second lateral side of the second housing part;
• filter circuitry electrically connected to a portion of the second conductive portion and configured to electrically connect the second conductive portion to a ground of the electronic device;
• and
• a third conductive portion forming at least a portion of a third lateral side of the third housing part and including a second feeding point and a second ground point,
• wherein, when the electronic device is in a folded state, the second housing part is positioned between the first housing part and the third housing part, and
• wherein, when the electronic device is in the folded state, the portion of the second conductive portion corresponds to a first region between the first feeding point and the first ground point and a second region between the second feeding point and the second ground point.