Resonant tag and method of manufacturing the same

A method of manufacturing a resonant tag, comprising the steps of:

• printing by using an etch-resistant material a first conductive pattern to form a conductive inductor element and a conductive capacitor element of a resonant circuit on one surface of conductive thin films having a predetermined thickness formed on the two surfaces of an insulating thin film;
• printing by using an etch-resistant material a second conductive pattern to form a capacitor element corresponding to the resonance frequency of the resonant circuit at a position opposing the disposed position of the capacitor element pattern on said one surface;
• etching, subsequent to the printing steps, for removing the non-printed portion of the conductive thin film;
• removing the ink on the remaining conductive pattern;
• thinning down to obtain a thin film of a desired thickness at least the portion generally corresponding to the disposed position of said capacitor element patterns of the resonant circuit pattern formed by said etching step;
• and
• forming an LC resonant circuit in the desired resonant circuit pattern portion by electrically connecting said first and second conductive patterns.