A metal cap is provided with an RFID tag that includes a metal cap including a cylindrical main body part, a top plate part formed at one end of the cylindrical main body part, and an opening part formed at the other end of the cylindrical main body part, and an RFID tag disposed on the metal cap. The RFID tag includes an RFIC element disposed in the metal cap, and a loop antenna connected to the RFIC element. At least a portion of a loop opening of the loop antenna extends in a circumferential direction R of the metal cap while being exposed from an opening edge of the opening part of the metal cap to the outside of the metal cap.

A planar antenna (PA) of a transponder chip module (TCM) may have a planar antenna (PA) etched from a foil to have a track width of approximately 100 m or less; and a spacing between adjacent turns of the track of approximately 25 m or less. The track may subsequently be plated to reduce the spacing. A module tape (MT2) may have contact pads (CP) on one side thereof and a connection bridge (CBR) on another side thereof, and may be joined with a module tape (MT1) having a planar antenna (PA).

A radiofrequency transceiver device comprises an electronic circuit including a chip and a first antenna electrically connected to the chip, a textile-core thread formed of a non-conductive material, and a second antenna formed of a textile element in an electrically conducting material and disposed in non-contiguous turns around and along the textile-core thread. The electronic circuit is disposed relative to the second antenna so as to allow the electromagnetic coupling of the first and second antenna. A label may comprise the radiofrequency transceiver device. A particular method may be used to manufacture such a device.

A method of detecting a stimulus can include detecting an output from a radio frequency identification tag including a sensor. A smartphone-based sensing strategy can use chemiresponsive nanomaterials integrated into the circuitry of commercial Near Field Communication tags to achieve non-line-of-sight, portable, and inexpensive detection and discrimination of gas phase chemicals (e.g., ammonia, hydrogen peroxide, cyclohexanone, and water) at part-per-thousand and part-per-million concentrations.

An RFID device includes a substrate and a lead frame secured to the substrate. The lead frame includes a pair of connection pads formed of a conductive material. An RFID chip and an antenna are electrically coupled to the lead frame. The width of the lead frame is substantially equal to the height of the lead frame. The connection pads of the lead frame may be oriented, among other options, along a direction parallel to a height of the substrate or along a direction parallel to a width of the substrate.

A method of using shielded straps with RFID tag designs is disclosed. Specifically, the RFID device, in one embodiment, comprises a bridge conductor which couples the antenna and pair of strap pads together. Thus, the coupling between the bridge conductor and the strap conductor, the coupling between the bridge conductor and the antenna conductor, and the coupling between the antenna conductor and the strap conductor increases the total capacitance of the RFID strap device. Further, the presence of the bridge conductor also reduces the area occupied for a given inductance, and provides a higher effective capacitance when the bridge strap is connected to the antenna.

The invention relates to designs of contactless smart cards. The subject matter of the invention is a device comprising a microchip arranged on a substrate, a loop antenna, the pins of which are connected to pins of the microchip, and also a capacitor connected in parallel with the loop antenna and therewith forming an antenna of the device in the form of a resonant circuit, the substrate being in the form of a band wound into a ring and made of a flexible dielectric material, on the outer surface of which a strip of electrically conductive material is applied, forming the loop antenna, which together with the microchip is coated with a protective coating, forming a sealed casing. The end of the internal coil of the substrate is equipped with a projecting piece which is folded in the direction of the external coil of the substrate, and a strip of electrically conductive material applied thereto is electrically connected to the strip of electrically conductive material applied to the end of the external coil of the substrate, wherein widened sections of electrically conductive material arranged on both sides of the strip of electrically conductive material below the projecting piece at the end of the internal coil of the substrate act as capacitor plates. The invention achieves the desired technical result of raising operating reliability.

An object identification device includes a visual indicator, an RFID module, and an NFC assembly. The RFID module includes identification data. The RFID module harvests power from an electromagnetic field and may continuously direct that power to the visual indicator upon reception of a command conveyed by the electromagnetic field. The NFC assembly includes data associated with the identification data included in the RFID module. The NFC assembly may transmit the data included therein to a consumer communication device having NFC capabilities.

The invention relates to designs of contactless smart cards. The subject matter of the invention is a device comprising a microchip arranged on a substrate, a loop antenna, the pins of which are connected to pins of the microchip, and also a capacitor connected in parallel with the loop antenna and therewith forming an antenna of the device in the form of a resonant circuit, the substrate being in the form of a band wound into a ring and made of a flexible dielectric material, on the outer surface of which a strip of electrically conductive material is applied, forming the loop antenna, which together with the microchip is coated with a protective coating, forming a scaled casing. The end of the internal coil of the substrate is equipped with a projecting piece which is folded in the direction of the external coil of the substrate, and a strip of electrically conductive material applied thereto is electrically connected to the strip of electrically conductive material applied to the end of the external coil of the substrate, wherein widened sections of electrically conductive material arranged on both sides of the strip of electrically conductive material below the projecting piece at the end of the internal coil of the substrate act as capacitor plates. The invention achieves the desired technical result of raising operating reliability.

A metal chip card capable of supporting radio frequency communication and payment. An antenna circuit module of the metal chip card consists of an FPC/PCBA antenna circuit board (11), an IC chip (12), a chip sealing adhesive (13), and a two-side gold-plated touch electrode (26). An ultrathin ferrite wave absorption electromagnetic shielding layer (27) is stuck below the antenna circuit module, and the antenna circuit module and a substrate (28) which is provided with a milled groove and the inner wall of which is coated with a hot melt adhesive layer (14) are packaged into a metal chip card by means of hot pressing. The metal chip card can implement RFID and NFC radio frequency functions on a metal card body and can be normally used without barriers.