Foldable electronic device comprising antenna

An electronic device comprising:

• a housing including a first part including a first side member, a second part including a second side member, and a hinge structure connecting the first part and the second part, wherein the first part is coupled to the hinge structure to be rotatable to the second part;
• a flexible display;
• a first antenna including a first portion of the first side member;
• a second antenna including a second portion of the second side member, wherein, in a state in which the housing is folded, the first antenna overlaps the second antenna;
• a power distribution circuit electrically connected to a first feed point of the first antenna via a first path and electrically connected to a second feed point of the second antenna via a second path longer than the first path, wherein, in the state in which the housing is folded, the first feed point in which a first radio frequency (RF) signal for the first antenna is fed corresponds to the second feed point in which a second RF signal for the second antenna is fed;
• a wireless communication circuit electrically connected to the first antenna and the second antenna via the power distribution circuit;
• and
• at least one lumped element disposed on at least one of the first path or the second path and configured to adjust a phase of at least one of the first RF signal or the second RF signal, such that a difference between a phase of the first RF signal and a phase of the second RF signal is within a range.