Inductor-capacitor resonant circuits and improved methods of using same

A tag which uses radio frequency waves transmitted from a scanning device in order to identify an item to which said tag is attached or with which said tag is associated, comprising:

• a first insulating layer having a top surface and a bottom surface;
• and
• a plurality of resonant circuits formed on said first insulating layer, each of said plurality of resonant circuits formed on one of the top surface and the bottom surface of said first insulating layer and having a resonant frequency associated therewith, each of said plurality of resonant circuits including capacitance and inductance elements, said capacitance and inductance elements comprising an inwardly spiralled coil connected to an outwardly spiralled coil forming a substantially double spiral shape on said first insulating layer.

A resonance tag including a plurality of resonant circuits each comprising a capacitor element, and an inductor element electrically connected to said capacitor element, and said capacitor element and said inductor element are disposed on a same surface of the resonance tag, and said capacitance and inductor elements comprising an inwardly spiralled coil connected to an outwardly spiralled coil forming a substantially double spiral shape on said first insulating layer.

A system, comprising:

• a resonance tag including a plurality of resonant circuits each comprising a single capacitor, a single inductor coil electrically connected to said single capacitor, and an insulating layer separating portions of said single capacitor and said single inductor coil that cross over from each other, and said single capacitor and said single inductor coil disposed on a same surface of the resonance tag, said single capacitor and said inductor coil comprising an inwardly spiralled coil connected to an outwardly spiralled coil forming a substantially double spiral shape on said first insulating layer;
• and
• a scanning device configured to transmit radio frequency waves to said resonance tag and to said plurality of resonant circuits at varying frequencies which said plurality of resonant circuits may resonate to identify an item to which said resonance tag is attached or with which said resonance tag is associated.