An RFID tag device is disclosed that is designed to operate on difficult substrates, such as dielectric surfaces with high loss, organic material surfaces, or metallic surfaces. The RFID tag device comprises an RFID antenna structure formed on one side of a thermoplastic substrate component with an RFID chip coupled to it in a roll to roll process. The substrate component is then deformed into a series of cavities with the RFID antenna structure within the cavities. Specifically, the RFID antenna structure is positioned fully on a top surface of the cavity, or positioned partially in a top and partially on an edge/bottom of the cavity.

In some embodiments, a method of manufacturing a radio frequency identification (RFID) tag on a target surface of a non-planar object may be provided. The method may include positioning an antenna on the target surface of the non-planar object, positioning a reactive RFID strap on the target surface, and coupling the reactive RFID strap to the antenna to induce an antenna response.

A jewel includes a main body and at least one wireless communication device accommodated within a cavity formed in the main body. The at least one communication device is arranged slanting with respect to a bottom wall of the cavity, partly accommodated in an undercut region of the cavity and spaced from the bottom wall and from walls at opposed ends of the cavity, whereby propagation of the signal in the space between the at least one communication device and the walls of the cavity is allowed.

Provided is a contactless electronic system configured for contactless communications with a reader over an electromagnetic field and comprising a power supply, a current monitor, a processing system comprising a hardware processor configured for performing operations, a dynamic extra current loader and a clock generator. The current monitor is configured for determining maximal current Imax that can be provided by the power supply to the processing system from the electromagnetic field, and is configured for comparing, during an execution phase of said hardware processor, said determined maximal current Imax and a current drawn by the processing system.

A medical instrument is provided in which a wireless IC tag is fixed to a first or second body, such that at least part of the wireless IC tag is positioned more frontward than a front end of a first ring and a front end of a second ring and more backward than a support. A winding axis of an inductor is orthogonal to the up-down direction and intersects the front-back direction so that electric, magnetic, or electromagnetic field coupling is established between a resonant circuit and a metal medical instrument. Moreover, the metal medical instrument either emits a transmission signal, which has a frequency equal to a predetermined resonant frequency and supplied from the resonant circuit, as an electromagnetic wave, or it receives a reception signal having a frequency equal to the predetermined resonant frequency as an electromagnetic wave, and supplies the reception signal to the resonant circuit.

The invention is a device (E) with an RFID tag ( ), with the tag (1) is provided on one (12) of the faces (12, 13) with a layer (14, 14A) of a protective material, where the material being based on silicone and having a dielectric permittivity of greater than at least three times the dielectric permittivity of the air, and in that the layer (14, 14A) of material has a thickness of at least 6 millimeters. The invention also relates to a receptacle or packaging provided with a device of this kind.

RFID tags are provided for incorporation into the packaging of a microwavable food item. The packaging includes a first member (e.g., a tray) that is configured to be microwaved and a second member (e.g., a sleeve or box or enclosure) that is configured to be dissociated from the first member prior to microwaving the first member. The RFID tag includes a reactive strap associated with the first member and a far-field antenna associated with the second member. The reactive strap is coupled to the antenna when the packaging is intact, while being decoupled from the antenna when the second member has been dissociated from the first member. The RFID tag is capable of far-field communication when the reactive strap is coupled to the antenna, while the reactive strap is capable of only near-field communication when decoupled from the antenna.

A wireless identification tag for embedding into an electrically conductive surface of a rotatable work tool, the tag comprising at least a first and a second inductive planar loop having corresponding first and second terminals, wherein the first inductive planar loop and the second inductive planar loop are arranged in relation to a common plane and wherein the first inductive planar loop and the second inductive planar loop are arranged to cover separate areas of the common plane, where each area on the common plane is associated with a respective polarity of the magnetic flux normal to said plane.

The invention provides a two-sided auxiliary structure for induction cards, which comprises: a metal shield layer; and two high-conductivity magnetic layers, which are respectively set on two opposite sides of the metal shield layer, wherein the area of the metal shield layer is greater than those of the two high-conductivity magnetic layers. The two-sided auxiliary structure for induction cards of the invention improves the problem of poor induction success rate of plural induction cards.

The present disclosure is generally directed to an RFID tag for use with a metal fastener where the fastener operates as the antenna of the RFID tag. The RFID tag includes a microchip for storing data. The chip is electrically coupled to the metal fastener in order to receive and transmit the RF signal, the metal fastener thereby operating as the antenna for the RFID tag.