Abstract: A signal transmission connector including a frame base in which a first through hole and a second through hole are alternately formed and a frame including a frame top plate having a third through hole at each position corresponding to the first through hole and covering a top surface of the frame base. A frame bottom plate having a fourth through hole at each position corresponding to the first through hole and covering a bottom surface of the frame base and a conductive part disposed on a conductive part hole including a first through hole, a third through hole, and a fourth through hole and being in the form of a plurality of conductive particles in the elastic insulating material, wherein the frame is made of an inelastic insulating material. An air layer is formed in the second through hole sealed by the frame top plate and the frame bottom plate.