Provided is a transparent antenna comprising a transparent base material, an antenna part, and a joint part electrically bonded to the antenna part, the antenna part and the joint part being arranged on the transparent base material, wherein the joint part has a first conductive pattern and a first opening part without the first conductive pattern formed thereon, the antenna part has a second conductive pattern and a second opening part without the second conductive pattern formed thereon, surface free energy E.sub.1 of the first conductive pattern is 60 mJ/m.sup.2 or less, and surface free energy E.sub.0 of the transparent base material at the first opening part is larger than the surface free energy E.sub.1.

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 present invention relates to a metal card and a card manufacturing method, and the metal card includes a metal sheet, a machined part made of a plastic material in such a manner as to be inserted into one side surface of the metal sheet, an insulating sheet with a ferromagnetic insulating material in such a manner as to be attached to the underside of the metal sheet, and an inlay sheet with antenna coils in such a manner as to be attached to the underside of the insulating sheet, wherein the metal sheet has a machined part insertion portion formed on one side surface thereof to insert the machined part, and the ferromagnetic insulating material has the shape of one or more pieces or powder.

An RFID device includes an antenna that is formed so as to control the optical properties of the RFID device, which may include minimizing the amount of light that will be transmitted through the RFID device or allowing for the passage of a predetermined amount of light therethrough. The RFID device includes a conductive material associated with a substrate. The conductive material includes an antenna and a periphery. An RFID chip is electrically coupled to the antenna, but not to the periphery. The antenna may be defined by a cutting or etching or printing process. A gap between the antenna and the periphery may be on the order of approximately 25 μm-200 μm (if the transmission of light through the RFID device is to be minimized) or greater in at least one section (if the passage of a predetermined amount of light through the RFID device would be desirable).

RFID devices comprising (i) a transponder chip module (TCM, 1410) having an RFIC chip (IC) and a module antenna (MA), and (ii) a coupling frame (CF) having an electrical discontinuity comprising a slit (S) or non-conductive stripe (NCS). The coupling frame may be disposed closely adjacent the transponder chip module so that the slit overlaps the module antenna. The RFID device may be a payment object such as a jewelry item having a metal component modified with a slit (S) to function as a coupling frame. The coupling frame may be moved (such as rotated) to position the slit to selectively overlap the module antennas (MA) of one or more transponder chip modules (TCM-1, TCM-2) disposed in the payment object, thereby selectively enhancing (including enabling) contactless communication between a given transponder chip module in the payment object and another RFID device such as an external contactless reader. The coupling frame may be tubular. A card body construction for a metal smart card is disclosed.

A dual security tag including an RFID component and an electronic article surveillance (EAS) component, respectively disposed on opposite sides of a PET carrier substrate, is provided. The RFID component may include one or more ultra-high frequency antennae, such as a near field loop antenna and a far field dipole antenna, and an integrated circuit (IC) chip. The EAS component may be provided as an RF device, an acoustic-magnetic (AM) device, a low power Bluetooth (BLE) device, or other suitable device. The security tag may also include a facesheet affixed to the RFID component, a release liner layer affixed to the EAS device, and one or more intermediary films or protective layers. A method for manufacturing a dual security tag is also described.

Smartcards with metal layers manufactured according to various techniques disclosed herein. One or more metal layers of a smartcard stackup may be provided with slits overlapping at least a portion of a module antenna in an associated transponder chip module disposed in the smartcard so that the metal layer functions as a coupling frame. One or more metal layers may be pre-laminated with plastic layers to form a metal core or clad subassembly for a smartcard, and outer printed and/or overlay plastic layers may be laminated to the front and/or back of the metal core. Front and back overlays may be provided. Various constructions of and manufacturing techniques (including temperature, time, and pressure regimes for laminating) for smartcards are disclosed herein.

An antenna device includes a substrate, a chip, and an antenna. The chip is disposed on the substrate, and the chip has at least two pads. The antenna is disposed on the substrate, and the chip is disposed between the substrate and the antenna. The antenna has a first bonding line segment and a second bonding line segment electrically connected to the at least two pads respectively. The first bonding line segment is located at an outermost coil of the antenna, and is disposed across a short side direction of the chip in a manner of completely covering one of the at least two pads. The second bonding line segment is located at an innermost coil of the antenna, and is disposed across the short side direction of the chip in a manner of completely covering another of the at least two pads.

Devices including a substrate and a plurality of coil portions disposed on the substrate. The plurality of coil portions electrically coupled to form a coil structure.

A chip card configured as a metal card is RFID-capable on both sides, by the windings of the transponder coil being formed by the metal layer itself. Gaps between the windings of the transponder coil are filled with insulating material. A chip module is arranged above the ends of the transponder coil such that these ends are not visible for the viewer.