An electronic apparatus includes an antenna device, a solar panel disposed on a front side of the antenna device and a circuit board disposed on a back side of the antenna device. The antenna device includes a plate-shaped dielectric, a plate-shaped radiation conductor disposed on a front side of the dielectric and a plate-shaped grounding conductor disposed on a back side of the dielectric. The dielectric has a through hole formed therein, and the solar panel has electrode pads on a back side thereof, electrode pads being exposed within the through hole in the dielectric. The circuit board has conductive patterns at positions thereon facing the electrode pads, and the conductive patterns are electrically connected to the electrode pads by electric connection members disposed within the through hole in the dielectric.