An RFID tag is disclosed comprising a dielectric substrate having a first side and an opposite second side, and with an antenna arranged on the first side of the dielectric substrate. The antenna defines a gap and is configured to operate at an operation frequency. The RFID tag further comprises an RFID chip electrically coupled to the antenna across the gap. A shielding conductor is arranged on the second side of the dielectric substrate, and preferably underlaying the gap, wherein the shielding conductor is configured to limit the voltage across the gap when the antenna is exposed to a microwave frequency of a microwave oven.

A contactlessly readable tag includes a metal pattern layer, a conductive layer, and at least one intermediate layer. The intermediate layer has a relative permittivity of 0 or more and 2.5 or less and is provided between the metal pattern layer and the conductive layer. The metal pattern layer includes a metal part whose arrangement pattern corresponds to identification information. The identification information is configured to be identified based on information on an electromagnetic wave that is reflected by the contactlessly readable tag in response to irradiation of the contactlessly readable tag with an electromagnetic wave. The metal pattern layer is provided closer to a reading surface of the contactlessly readable tag than at least one of the intermediate layer.

A shield element for mounting on an object, in particular a flat object, such as a chip card. The object has a base body, an RFID or NFC transponder, a transponder chip and a coil-shaped transmission antenna connected to the RFID or NFC transponder chip. The shield element has a carrier made of non-conductive material. The carrier has a closed or closable conducting path which, upon mounting the shield element on the object, shields the object from the electromagnetic fields generated by an external reading device and directed at the transmission antenna of the RFID or NFC transponder chip.

[Problem] To provide: an RF tag antenna which is able to be fitted to a tire that contains a steel wire and a carbon powder; an RF tag; a tire which is provided with an RF tag; and a tire with a built-in RF tag. [Solution] An RF tag antenna 10 according to the present invention is used by being fitted to a tire 920 that contains a steel wire 925 and a carbon powder; and the RF tag antenna 10 comprises a ground part 30 and a potential difference formation part 20. The potential difference formation part 20 and the ground part 30 constitute a resonant circuit (LC); and the ground part 30 is electrically connected to the steel wire 925.

A radio frequency identification (RFID) transponder tag is contained in and electrically connected to a mechanically rugged metallic tag housing slotted to define a radio frequency antenna, such as a half turn antenna, and sealed with an epoxy filling.

A transaction card (smartcard) having a front “continuous” (with no slit) metal layer (ML, CML) with an opening (MO) for a dual-interface transponder chip module (TCM) having a module antenna (MA) on its bond side. A magnetic shielding layer (MSL) comprising ferrite material disposed below the front face continuous metal layer. An amplifying element, booster antenna circuit (BAC) disposed under the magnetic shielding layer. A rear discontinuous metal layer (ML, DML) with a slit (S) and a metal ledge surrounding the module opening to function as a coupling frame (CF). A rear plastic layer formed of non-RF impeding material may support a magnetic stripe and security elements (signature panel and hologram). A portion of the front face continuous metal layer may protrude downward into the magnetic shielding layer and booster antenna circuit layer. The rear discontinuous metal layer may have an additional slit to regulate the activation distance.

A transaction card (smartcard) having a front “continuous” (with no slit) metal layer (ML, CML) with an opening (MO) for a dual-interface transponder chip module (TCM) having a module antenna (MA) on its bond side. A magnetic shielding layer (MSL) comprising ferrite material disposed below the front face continuous metal layer. An amplifying element, booster antenna circuit (BAC) disposed under the magnetic shielding layer. A rear discontinuous metal layer (ML, DML) with a slit (S) and a metal ledge surrounding the module opening to function as a coupling frame (CF). A rear plastic layer formed of non-RF impeding material may support a magnetic stripe and security elements (signature panel and hologram). A portion of the front face continuous metal layer may protrude downward into the magnetic shielding layer and booster antenna circuit layer. The rear discontinuous metal layer may have an additional slit to regulate the activation distance.

A smartcard comprising: a plurality of smartcard substrate layers; an antenna layer comprising an antenna; a fingerprint sensor module embedded in the smartcard and connected to the antenna layer, the fingerprint sensor module being configured to receive energy and communicate with a reading device via the antenna, and wherein the fingerprint sensor module is galvanically isolated from an outside of the smartcard.

An RFID tag includes an RFID IC, a functional module, a case and a window member. The case has a recess and accommodates the RFID IC and the functional module in the recess. The window member is disposed in an opening of the recess. The case has a rib located between the functional module and a side wall of the recess so as to be spaced from the side wall.

Provided is a memory device. The memory device includes a module board on which one or more semiconductor devices are disposed and a conductive plate mounted on a first side of the module board. The conductive plate includes a shielding region and a non-shielding region. A pad is disposed in the shielding region of the conductive plate.