Selective deposition of magnetic particles and using magnetic material as a carrier medium to deposit nanoparticles
AssigneeFéinics AmaTech Teoranta
InventorsDavid Finn, Mustafa Lotya
Life of this patent
Estimating the term…
Abstract
Selective deposition of magnetic material such as particles, and producing a pre-laminated stack of shielding layers for offsetting attenuation of RF caused by a metal face plate of a smart card (or tag) or a metallized layer near a passive transponder. Coated or uncoated magnetic particles of different sizes may be used to increase the packing density of the material after its deposition on a substrate. Magnetography-based techniques may be used to apply the particles, at high packing density, including different-sized particles to a substrate such as PVC. Magnetic particles may be used as a carrier medium to deposit other particles nanoparticles. A system for selective deposition is disclosed.
Claims11
An RFID device comprising an RFID chip, a module antenna connected with the RFID chip, and a booster antenna disposed in a layer of the device;
- further comprising:
- one or more shielding layers comprising a layer of synthetic material selectively coated with magnetic material to create an electronic laminate for the RFID device;
- wherein the one or more shielding layers comprise areas of magnetic material selectively disposed in a pattern corresponding to and covering at least a portion of one of more components of the booster antenna;
- and
- wherein the one or more shielding layers are formed to cover only booster antenna components, rather than an entire surface of the inlay substrate.
An RFID device comprising:
- a booster antenna (BA) disposed in an inlay substrate;
- and
- a metal foil disposed on at least one side of the inlay substrate, the metal foil having a thickness less than a skin depth of the metal of the foil in order to prevent the formation of eddy currents in the metal foil that will attenuate the RF electromagnetic field.
Dependencies are inferred from the claim text.