An RFID inlay includes an RFID module and an antenna. The RFID module includes an RFIC and an antenna sharing circuit provided between the RFIC and the antenna. The RFIC includes a power receiving terminal to which power induced upon receipt of an electromagnetic wave for power reception is input and a transmitting terminal from which a transmission signal for RFID is output. Moreover, the antenna receives the electromagnetic wave for power reception and generates an electromagnetic wave for RFID.

Wireless sensing units, methods, systems, and processor-readable media for obtaining pressure data relating to one or more pressure locations of a surface area are described. A wireless sensing system includes a pressure monitoring device communicating with modular wireless smart floor tiles using RFID, either using an RFID reader or wireless network interface (e.g., 802.11). The tiles incorporate passive or active RFID tags. The tiles can be powered wirelessly, e.g. by a built-in piezoelectric power unit or by a wireless power source using magnetic resonance. A data capture circuit in each tile collects and saves the data for transmission to the floor pressure monitoring device. Various software applications can be enabled by the smart floor system, including fall detection and prediction, gesture input, intrusion detection, and user location tracking for smart home automation.

An RFID tag is provided as a wireless communication device for transmitting and receiving a communication signal. The RFID tag includes a base material, antenna patterns formed on the base material, an RFIC package that is a feeder circuit connected to the antenna patterns, and an LC resonance circuit that is adjacent to the antenna patterns and resonates at a frequency higher than the frequency of the communication signal.

This RFID tag comprises: a film wiring substrate including a flexible base material having a first surface and a second surface located opposite to the first surface, and conductors located on the first and second surfaces, respectively; and an RFIC IC connected to the conductors, wherein the film wiring substrate is bent, and at least a first conductor part included in the conductor on the first surface, a second conductor part included in the conductor on the first surface or the second surface, and a conductor on the second surface that does not include the second conductor part overlap each other.

An antenna for an RFID (Radio Frequency Identification) tag comprises two antenna parts being arranged at opposite end areas of the antenna, and at least one intermediate part forming a bridge between the antenna parts. One of the at least one intermediate part comprises power feeding areas to be connected to an integrated circuit. Further, a first gap is arranged in one of the at least one intermediate part, and has a gap length of less than 80 μm, which forms a low impedance path for current at microwave frequencies.

A radio frequency identification (RFID) tag includes an inlay; a magnetic sheet laminated on an attachment object side of the inlay; and a spacer layer disposed between the magnetic sheet and the attachment object. The inlay includes an IC chip configured to store identification information, a loop conductor connected to the IC chip, and an antenna unit connected to the loop conductor.

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.

An antenna structure comprises an impedance matching part, a first conductive structure and a second conductive structure. The first conductive structure with a first length along a first direction is coupled to a first side of the impedance matching part and has a plurality of first polygon conductive structures, each of which is coupled to each other through a first conductive element. The second conductive structure with a second length along a first direction is coupled to a second side of the impedance matching part and has a plurality of second polygon conductive structures, each of which is coupled to each other through a second conductive element, wherein the second length is larger than the first length. The first and second polygon conductive structures are protrusion toward the second direction. In one embodiment, the antenna structure can be applied on an object having metal housing or liquid contained therein.

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).

Radio frequency identification (RFID) systems for use with tires include a stud comprising reactive strap technology including an RFID chip and conductor. The stud is configured so as to be connected to a tire and to provide near field communication. The stud also may be coupled to an antenna structure to provide a far field RFID tag. The stud may unintentionally move with respect to the antenna structure during use, so the antenna structure may be configured to accommodate such movement without a change in the tuning of the RFID tag. A multi-antenna label may be provided to allow for selective coupling of the stud to a particular antenna, with differently configured tires being coupled to different antennas of the same type of multi-antenna label, which allows for the same label configuration to be used with a wider variety of tires.