A detectable label and associated methods of making a detectable label are provided. One example of the detectable label may include a coil and a capacitor arranged in an LC circuit. The flux direction of the LC circuit is generally parallel a package when the detectable label is attached to the package.

A tuning assembly for an RFID chip includes an input port, a control unit, and a plurality of capacitors connected in parallel between the input port and the control unit. A selector circuit is coupled to each capacitor and to the control unit and is configured to selectively allow and prevent current flow through any of the capacitors in response to commands from the control unit, thereby adjusting the capacitance of the RFID chip. The commands include a command to always allow current flow through a capacitor, another command to always prevent current flow through a capacitor, and a third command to selectively allow and prevent current flow through a capacitor (e.g., for automatic adjustment of the capacitance of the RFID chip). The control unit may be programmed before or after the RFID chip is coupled to an antenna, including after a fully assembled RFID label has been attached to an article.

An RFID tag includes an RFID IC, flexible substrates including first wiring conductors and rigid substrates including second wiring conductors. Substrate surfaces of the flexible substrates include first regions connected to the rigid substrates and second regions that include opposite surfaces and are not connected to the rigid substrates. First conductor portions and second conductor portions included in the first wiring conductors are electrically connected to each other via the second wiring conductors. The RFID IC is connected to the first wiring conductors, the second wiring conductors, or both the first wiring conductors and the second wiring conductors.

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.

The system and techniques disclose herein describe a radio-frequency identification (RFID) capacitance liquid measurement and tag (RCLMT) system for detecting a volume of liquid in a container (liquid level detection), for example an amount of wine inside of a wine bottle. The RCLMT system includes a RFID chip, flexible printed circuit board (PCB), capacitive strips, and adhesive which implements a RFID tag-based sensor that advantageously uses low power and has low cost. Further, a user platform, including the RCLMT system and computer software applications (apps) and a backend system (e.g., cloud service) is described herein. The RCLMT system acts as a passive liquid level detection sensor, which enables the amount of a liquid beverage, such as alcohol, that is inside of a container to be automatically and accurately ascertained.

Subject matter disclosed herein may relate to wireless energy harvesting and may relate more particularly to power-dependent tuning at energy-harvesting devices.

The invention relates to a chip card designed to communicate data in a contactless mode with a card reader operating at a reading frequency. The resonance frequency of the chip card may change according to the capacitance of the chip used in the contactless mode of the chip card. In order to be able to use various chips without changing the booster antenna design, the card antenna circuit is provided with a capacitance element such that the chip card including the card antenna circuit and the chip module has two different resonance frequencies, one of which being equal to, or lower than, the reading frequency and the other being equal to, or greater, than the reading frequency. This create a broadband wherein the reading frequency falls.

An RFIC device including a resin block having a first surface, a second surface that faces the first surface, and a through-hole that extends through the first surface and the second surface. Moreover, the RFIC device includes an RFIC element that is embedded in the resin block and a coil antenna disposed in the resin block that is connected with the RFIC element and that has a central axis that extends from the first surface to the second surface. In addition, the through-hole extends inside the coil antenna.

The invention relates to a capacitive, planar information carrier with a first, second and third electrically conductive area wherein the first electrically conductive area is overprinted with a first dielectric layer having a first relative permittivity ∈1 and wherein the third electrically conductive area is overprinted with a second dielectric layer having a second relative permittivity ∈2. In another aspect, the invention relates to an information carrier formed from an electrically conductive surface of an object or an electrically conductive object. In other aspects, the invention relates to methods for the manufacture of information carriers, methods for detecting information carriers and to the use of an information carrier.

Systems and methods for integrating tags with items. The methods comprise: dynamically determining a length of each metal thread to be incorporated into or trace to be disposed on a item to optimize tag performance in view of dielectric and tuning properties of the item. In the metal thread scenarios, the methods also involve: creating a metal thread having the length that was dynamically determined; and sewing the metal thread into the item being produced to form an antenna for a first tag. In the trace scenarios, the methods also involve forming the trace on the item being produced to form an antenna for a first tag. Next, at least a communications enabled device is attached to the item so as to form an electrical coupling or connection between the communications enabled device and the at least one antenna.