Production process of tag antenna

A production process of a tag antenna and a micro strip patch RFID tag antenna. The production process includes: an etching step of etching a metal layer on a thin film material composited with the metal layer to form a thin film with radiation unit patterns, short circuit pin patterns and ground plate patterns; a compositing step of coating gel on the thin film or a substrate and adhering the thin film to the substrate; and a folding step of folding the thin film along an edge of the substrate, adhering the short circuit pin patterns of the thin film to sides of the substrate, folding again the thin film in a same direction, adhering the ground plate patterns to a lower surface of the substrate.