An induction card with a printed antenna comprises: an upper cover film; an upper middle layer installed below the upper cover film; one or two surfaces of the upper middle layer being coated or printed with an upper patter layer; a pad thick layer installed below the upper middle layer; a hole being...http://www.google.fr/patents/US7744005?utm_source=gb-gplus-shareBrevet US7744005 - Induction card with a printed antenna
