Electromagnetic radiation decoupler
AssigneeOmni-Id Cayman Limited
InventorsChristopher Robert Lawrence, Paul Richard Clarke, James Robert Brown, William Norman Damerell
Life of this patent
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Abstract
An electromagnetic radiation decoupler for decoupling radiation in the wavelength range λmin to λmax. The decoupler has a first conductor layer in contact with a dielectric layer which comprises at least one area of absence and the thickness of the decoupler is less than λmin/4n, where n is the refractive index of the dielectric. The dielectric layer may be sandwiched between two conductor layers, one of which has the structure described above. The invention is also directed to methods of using and various articles comprising such a decoupler.
Claims14
A radiation decoupler for decoupling radiation from a conducting surface, said decoupler comprising:
- a dielectric layer having a first surface and an opposing second surface;
- a first conductor layer in contact with at least one dielectric layer surface, wherein the first conductor layer has at least one area of absence where the first conductor layer does not overlie the dielectric layer;
- and
- an electronic device including an RF tag electrically connected to an antenna wherein the electronic device is located in the area of absence of the first conductor layer such that the electronic device antenna is electrically isolated from the first conductor layer, wherein the decoupler is adapted such that, in use, an electromagnetic field is enhanced in the vicinity of the area of absence of the first conductor layer.
Dependencies are inferred from the claim text.