Omni-id Cayman Limited

Omni-id Corporation, Inc.

James Robert Brown

Christopher Robert Lawrence

William Norman Damerell

Paul Richard Clarke

Richard James Duncombe

Daniel Robert Johnson

Paul Richard c/o Qinetiq Limited Clarke

Christopher Robert c/o Qinetiq Limited Lawrence

An electromagnetic radiation decoupler for decoupling radiation in the wavelength range &#x3bb;to &#x3bb;. 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 &#x3bb;/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.

Electromagnetic radiation decoupler

Apparatus and methods for providing a substantially surface independent tagging system are disclosed. A resonant dielectric cavity is defined between upper and lower conducting layers, and closed at one end by a conducting base portion. Incident radiation couples into the cavity and is resonantly enhanced. An electronic device or tag paced at the edge of the cavity experiences a high electric field strength on account of this enhancement and is driven into operation.

Electromagnetic enhancement and decoupling

Apparatus capable of enhancing an incident electric field to drive an electromagnetic tag () into operation, comprising a resonant dielectric cavity which extends out of a single plane defined between two conducting surfaces (). The cavity may extend over two or more layers, and can adopt C or S shaped or spiral profiles.

Radiation enhancement and decoupling

A device capable of enhancing an electric field to drive an electromagnetic tag into operation is switchable between states to control operation of the tag. Enhancement is provided by a dielectric cavity structure defined between first and second conducting layers. Different states of the device may have different resonant frequencies and read ranges according to the characteristics of the enhancement. As such a container can be provided which includes a tag which switches states on opening, allowing improved tracking characteristics.

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Farnborough, United Kingdom

James Robert Brown