It is provided a receiving apparatus that can suppress power consumption to the minimum even when a plurality of active antennas including active circuits is used and it is also provided a capsule endoscope system. The receiving apparatus includes: a plurality of receiving antennas 41-48 in which active circuits 41b-48b are provided and a selection controller 581 that performs control of selecting one receiving antenna that receives a radio signal transmitted from the outside from the plurality of receiving antennas 41-48 and supplying power only to the selected receiving antenna.
