Electronic device comprising antenna module

An electronic device having an antenna module, the electronic device comprising:

• a metal frame constituting a side region of the electronic device;
• a dielectric case arranged on one side of the metal frame;
• and
• an antenna module arranged in an inner region of the dielectric case, arranged to face an inner surface of the dielectric case, and comprising a multi-layer substrate made of a plurality of dielectric materials and a conductive pattern,
• wherein the multi-layer substrate comprises a first layer made of a flexible first material;
• the multi-layer substrate comprises second layers comprising a plurality of layers made of a stiff (rigid) second material arranged on one side surface of the first layer;
• and
• the multi-layer substrate comprises third layers comprising a plurality of layers made of the rigid second material arranged on another side surface of the first layer,
• wherein the first layer comprises a first region arranged in parallel with the second layers and the third layers, and a second region arranged to be vertical to the second layers and the third layers,
• wherein the conductive pattern comprises:
• a first conductive pattern arranged on the one side surface in the first region and the second region of the one side surface of the first layer to transmit and receive a signal;
• a second conductive pattern arranged on a lower third layer which is one layer of the third layers;
• and
• a third conductive pattern arranged on a lower fourth layer which is another layer among the third layers, and
• wherein the second conductive pattern and the third conductive pattern are connected to each other through via holes, and
• the lower third layer is arranged close to the another side surface of the first layer, and the lower fourth layer is arranged further apart from the another side surface of the first layer compared to the lower third layer.