A luggage tag includes an electronic ink display screen affixed to a surface of the luggage tag. Tag memory of the tag stores a unique identifier. An antenna receives an electromagnetic signal. Circuitry of the tag captures energy and acquires data from the electromagnetic signal received by the antenna and powers the electronic ink display with the captured energy. A processor receives the data acquired by the circuitry from the electromagnetic signal and produces an image on the electronic ink display using the acquired data if the acquired data includes a match to the unique identifier stored in the memory.

A self-declaring electronic license plate (e-plate) system for a vehicle is disclosed. This self-declaring e-plate system includes: an input device; a radio frequency identification (RFID) reader coupled to the input device; and an RFID-enabled license plate. In some embodiments, the input device is configured to receive vehicle occupancy information and triggers the RFID reader to write the received vehicle occupancy information to the RFID-enabled license plate in response to receiving the vehicle occupancy information. The RFID reader is configured to write at least a portion of the received vehicle occupancy information to the RFID-enabled license plate. The RFID-enabled license plate is configured to provide at least a portion of the received vehicle occupancy information to an electronic toll collection (ETC) reader. In some embodiments, the received vehicle occupancy information includes a current number of occupants self-declared by a user, such as a driver or a passenger inside the vehicle.

An RFID tag includes a circuit board, an RFID IC, a functional module, a case and a lid. The circuit board has a main part and an extended part. The extended part extends along an edge of the main part and includes an antenna conductor. The RFID IC is mounted on the circuit board. The functional module is disposed so as to overlap the circuit board. The case accommodates the circuit board and the functional module. The lid closes an opening of the case. The main part of the circuit board is held at a position away from an inner bottom surface of the case with the functional module as an obstacle in a direction toward the lid.

An improved passive RFID tag configured for needle implantation in a tail of a rodent using a small diameter needle provides for increased read distances and effectiveness. In various embodiments, the RFID tag is comprised of an elongated flexible substrate having a pair of opposed surfaces with a UHF RFID chip positioned on a first of the opposed surfaces and is directly electrically connected to a closed-loop multi-layer folded dipole antenna disposed on both of the opposed surfaces of the substrate. An antenna is electrically connected to the RFID chip and includes at least an inductor as part of the closed-loop antenna. In embodiments, the RFID tag can be read with at least 90 percent effectiveness by a 30 dB RFID tag reader at least 5 cm from a tail of the rodent.

Tracking tag and method for livestock tracking. The tracking tag includes, in some implementations, a near-field communication (NFC) module, a battery module, and a Bluetooth module. The NFC module is programmed with a unique identifier. The battery module is coupled to the NFC module. The battery module is configured to supply battery energy when active. The battery module is also configured to activate when the NFC module is first read after being programmed with the unique identifier. The Bluetooth module is coupled to the battery module. The Bluetooth module is configured to receive the battery energy from the battery module. The Bluetooth module is also configured to transmit the unique identifier using a Bluetooth Low Energy (BLE) transmission protocol.

A belt includes a laminate including a back surface layer disposed on a back surface side and a tension member layer including a tension member. The belt includes a sensor provided in the laminate and configured to detect a state of the belt, and a passive RFID also provided in the laminate, including an IC chip and an antenna, and configured to transmit state information on the belt detected by the sensor to an outside.

An RF tag includes an RF tag antenna and an IC chip. The RF tag antenna is provided with: an insulation base material having a first main surface, a second main surface, and a first lateral surface; a first waveguide element provided on the first main surface; a second waveguide element provided to extend from the second main surface to the first lateral surface and the first main surface; and a power supply part and a short circuiting part that are provided on the first main surface. A planar inverted-F antenna is formed from the insulation base material, the first waveguide element, the second waveguide element, the power supply part, and the short circuiting part. The lengths of the power supply part and the short circuiting part are set such that the resonant frequency of an LC resonant circuit coincides with the reception frequency of radio waves.

An RFID tag includes an RFID tag device and a seat antenna. The RFID tag device includes an RFID tag IC and a board where the RFID tag IC is mounted. The seat antenna includes an antenna conductor. To the seat antenna, the RFID tag device is fixed. The board includes a first surface conductor, a second surface conductor and a short-circuit conductor. The second surface conductor is disposed between the first surface conductor and the antenna conductor. The short-circuit conductor short-circuits the first surface conductor and the second surface conductor. A direction from a connection part in the second surface conductor with the short-circuit conductor to a center of the second surface conductor is aligned with a long side direction of the antenna conductor.

A method for producing a radiofrequency device having a first antenna circuit connected to a radiofrequency chip and a second antenna circuit associated with, or coupled to, the first circuit, the method including the following steps: formation of the first antenna circuit in the form of a conductive wire deposited in a guided manner on a first substrate; and formation of the second antenna circuit in the form of a conductive wire deposited on the same first substrate in a guided manner and at a calibrated distance from the first antenna circuit.

RFID tags are provided for incorporation into the packaging of a microwavable food item, with the RFID tag being configured to be safely microwaved. The RFID tag includes an antenna defining a gap and configured to operate at a first frequency. An RFID chip is electrically coupled to the antenna across the gap. A shielding structure is electrically coupled to the antenna across the gap and overlays the RFID chip. The shielding structure includes a shield conductor and a shield dielectric at least partially positioned between the shield conductor and the RFID chip. The shielding structure is configured to limit the voltage across the gap when the antenna is exposed to a second frequency that is greater than first frequency. In additional embodiments, RFID tags are provided for incorporation into the packaging of a microwavable food item, with the RFID tag being configured to be safely microwaved. The RFID tag includes an RFID chip and an antenna electrically coupled to the RFID chip. The antenna may have a sheet resistance in the range of approximately 100 ohms to approximately 230 ohms, optionally with an optical density in the range of approximately 0.18 to approximately 0.29. Alternatively, or additionally, the antenna may be configured to fracture into multiple pieces upon being subjected to heating in a microwave oven. Alternatively, or additionally, the RFID tag may be incorporated in an RFID label that is secured to the package by a joinder material with a greater resistance than that of the antenna, such as a sheet resistance in the range of approximately 100 ohms to approximately 230 ohms.