A transceiver is disclosed. The transceiver includes a first unit capable of a full-duplex communication using an electromagnetic wave, and a second unit capable of a full-duplex communication using an electromagnetic wave. The first unit includes a transmitter and a receiver arranged in this order at a predetermined interval in a first direction. The second unit includes a receiver and a transmitter arranged in this order at a predetermined interval in the first direction. The second unit is placed adjacent to the first unit in a second direction perpendicular to the first direction.