Rotary-type data transmission device and electronic apparatus including the same

A rotary-type data transmission device comprising:

• a first structure having a first surface and a second surface facing each other, the first structure including a first metal hollow waveguide including a first through hole passing through the second surface from the first surface in a center portion thereof;
• a second structure coupled to the first structure so that the second structure supports rotation of the first structure or rotation of the second structure is supported by the first structure;
• a first transceiver unit facing the first surface at a certain distance therebetween, coupled to the first structure, the first transceiver unit including a first printed circuit board, a first meta waveguide, and a first transceiver;
• and
• a second transceiver unit facing the second surface at a certain distance therebetween, coupled to the second structure, the second transceiver unit including a second printed circuit board, a second meta waveguide, and a second transceiver.