Antenna module and communication device mounted with same

An antenna module comprising:

• a dielectric substrate that has a first surface and a second surface;
• a first radiating element, a second radiating element, and a third radiating element that are arranged in the dielectric substrate and each of which includes a plurality of electrodes having a flat-plate shape;
• a first dielectric layer that is arranged on the first surface in a manner to cover a first region in which the electrodes of the first radiating element are arranged;
• and
• a second dielectric layer that is arranged on the first surface in a manner to cover a second region in which the electrodes of the third radiating element are arranged, wherein
• the first radiating element, the second radiating element, and the third radiating element can radiate radio waves in mutually-different frequency bands,
• the first region and the second region are adjacent to each other,
• a dielectric constant of the first dielectric layer and a dielectric constant of the second dielectric layer are higher than a dielectric constant of the dielectric substrate,
• the first radiating element can radiate a radio wave in a first frequency band,
• the second radiating element can radiate a radio wave in a second frequency band, the second frequency band being higher than the first frequency band,
• the third radiating element can radiate a radio wave in a third frequency band, the third frequency band being higher than the second frequency band, and
• the electrodes of the second radiating element overlap with the electrodes of the third radiating element in plan view in a normal direction of the dielectric substrate.