To miniaturize an antenna device or the like without lowering reception sensitivity.

The antenna device 630 in a reception control circuit part 600 for receiving standard radio waves comprises a magnetic sensor circuit 610 for detecting the change of an external magnetic field as a voltage change, a resonance circuit 620 composed of a resonance element 621 such as a crystal for taking out only the magnetic field change of a resonance frequency among the magnetic field changes detected by the magnetic sensor circuit 610, and a resistor R0. Also, the magnetic sensor circuit 610 has a magnetoresistance effect element 612, a DC power source 611 for applying a DC voltage to the magnetoresistance effect element 612, and a resistor R1.