Omni-id Cayman Limited

Omni-id Corporation, Inc.

William Norman Damerell

Christopher Robert Lawrence

James Robert Brown

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 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.

Switchable radiation enhancement and decoupling

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Hampshire, United Kingdom

William Norman Damerell