A receiving apparatus (101110411061) for a capsule medical apparatus (2) is disclosed, comprising a flexible antenna apparatus (10241074) for receiving a wireless signal transmitted from an external capsule medical apparatus (1082), wherein thee receiving antenna (1241) id arranged in two dimensions a sheet-shaped flexible receiving-apparatus main unit (102210421072) on which a demodulation circuit is arranged and a sheet-shaped flexible power apparatus (10231073) . The flexible antenna apparatus is arranged on at least front surfaces of the flexible antenna apparatus (10241074), the flexible receiving-apparatus main unit (102210421072), and the flexible power apparatus (10231073), and these apparatuses are electrically connected with each other in a layer structure. An antenna unit (4a to 4h24a44a) is also disclosed.