Electronic device including antenna arrangement

An electronic device comprising:

• a first housing including a first space and including a first support member at least partly extending to the first space;
• a second housing including a second space, including a second support member at least partly extending to the second space, and slidably combined with the first housing along a first direction;
• a bendable member connected to the first housing, being at least partly accommodated in the second space in a slide-in state, and at least partly forming a same plane with the first housing in a slide-out state;
• a flexible display including a first part disposed to be seen from an outside in the slide-in state, and a second part extending from the first part and being at least partly accommodated in the second space so as not to be seen from the outside through the bendable member;
• at least one first antenna disposed in the first housing;
• and
• a wireless communication circuit disposed in the first space and configured to transmit or receive a wireless signal in at least one frequency band through the at least one first antenna,
• wherein the first support member includes a non-overlapping part not overlapping the second support member in the slide-in state and at least partly formed as a non-conductive area, and
• wherein the at least one first antenna is disposed in a position overlapping the non-conductive area when viewed from above the first support member.