Patent ID: 8628010

Claim:
A method of manufacturing a transponder for assembly to a metal or electrically conductive structure distinct from the transponder; the transponder comprising an antenna and a resonant circuit having, when applied to the metal or electrically conductive structure, a resonance frequency equal to a nominal radio frequency; the method comprising: sizing the resonant circuit to achieve, when it is not applied to the metal or electrically conductive structure, a resonance frequency equal to said nominal radio frequency plus a frequency shift depending on a stray capacitance produced between the metal or electrically conductive structure and the transponder when the transponder is applied to the metal or electrically conductive structure; wherein the antenna comprises a number of electrically conductive, substantially complete, turns which are wound in parallel to an antenna plane; and wherein, the transponder is designed so that when the transponder is attached to an incision on the metal or electrically conductive structure at a point at which the antenna of the transponder is located on the metal or electrically conductive structure, the antenna plane is normally parallel to a wall of the metal or electrically conductive structure.