Electrically conductive metal composite embroidery yarn and embroidered circuit using thereof

An embroidered circuit comprising a metal composite embroidery yarn and a dielectric fabric substrate, in which the metal composite embroidery yarn is embroidered on the dielectric fabric substrate,

• wherein the metal composite embroidery yarn is produced by:
• a first process in which one or more metal filaments are wound in a covered state around the surface of fiber yarn to have a plurality of twists per meter;
• a second process in which the fiber yarn wound with metal filaments in the first process is twisted in S direction to have a plurality of twists per meter;
• and a third process in which two or more of the S-twisted yarns are plied in Z direction to have a plurality of twists per meter, and
• wherein the metal filaments are covered with multifilament yarns of 30 deniers or less for protection.