Antenna module and electronic device comprising same

An antenna module comprising a multi-layered substrate, the antenna module comprising:

• a first radiator disposed at a first region of the multi-layered substrate and forming a first conductive layer to radiate a first wireless signal as a first patch antenna of the antenna module;
• a second radiator disposed at a second region of the multi-layered substrate lower than the first region and offset from a center of the first radiator, wherein the second radiator forms a second conductive layer to radiate a second wireless signal as a second patch antenna of the antenna module;
• and
• a feed line connected to the second radiator through a signal via, wherein the signal via is connected to the second radiator at a connection point offset from a center of the second radiator,
• wherein positions of the first radiator and the second radiator overlap each other along one axis,
• wherein a length (a) of the first radiator along the one axis and a length (b) of the second radiator along the one axis are different such that the first radiator and the second radiator operate at different frequency bands,
• wherein a ratio (b/a) of the length of the second radiator to a length of the first radiator is in a range of 0.35 to 0.9, and
• wherein a ratio (c/b) of a length (c) of overlap between the first and second radiators to the length of the second radiator is less than 0.7.