A radio frequency device utilizing an antenna having a single antenna structure resonant on multiple resonant frequency ranges. The antenna can be configured to operate within multiple frequency ranges for communication according to respective protocols associated with the respective frequency ranges.

An antenna module for a RFID reader is provided, the antenna module being configured for operation with a plurality of transceivers of different impedance. The RFID reader includes an antenna and at least two terminals, with the antenna being connectable via at least a first of the terminals along at least two different contact points. A switch may also be provided for enabling switching between the at least two contact points. A RFID reader and a method for assembling a RFID reader are also provided. The antenna module and associated RFID reader are advantageously configured for use with a number of different transceivers.

A system includes a first computing device having a first non-transitory machine-readable storage medium, first communication circuitry, and at least one first processor in communication with the first non-transitory machine-readable storage medium and the first communication circuitry. The at least one first processor is configured to execute instructions stored in the first non-transitory machine-readable storage medium to cause the first communication circuitry to receive a first signal from a first transmission medium, calculate a first authentication value for an object based on data included in the first signal, and cause the first communication circuitry to transmit a second signal to the first transmission medium. The second signal identifies whether the object is authentic based, at least in part, on the first authentication value.

Provided is an individual management system that prevents confusion of ova, fertilized eggs, and the like to be used for treatment, and that is suitable for individual management of fertilized eggs and the like to be cryopreserved. This individual management system comprises: a server 11 installed in an appropriate location within a facility; a plurality of personal computers 13, 21; identification code readers 14, 22, 34 that are used at appropriate location within the facility; an identification code/IC tag reader 47; a device, instrument, implement, and container 41, 42, 43, 45 that are used to cryopreserve specimens, as necessary; and identification codes and IC tags 43d, 45c that are attached to at least the device, instrument, implement, and container. The device, instrument, implement, and container installed or used within the facility are interconnected via an intra-facility network 5, and further connected to a cloud server 71 via the Internet 6.

An antenna assembly for a radio frequency identification (RFID) reader includes: a support member having an inner surface and an opposing outer surface; a first bifilar helical antenna element wound about a first helical axis extending from the outer surface of the support member, wherein the first helical axis is exclusive to the first helical antenna element; a first control terminal on the support member, electrically connected with the first bifilar helical antenna element; a second bifilar helical antenna element wound about a second helical axis extending from the outer surface of the support member, wherein the second helical axis is exclusive to the second helical antenna element; and a second control terminal on the support member, electrically connected with the second bifilar helical antenna element.

An antenna device includes first and second coil antennas with winding axis directions that are not perpendicular to each other, and a feeder coil including a winding axis that extends perpendicular or substantially perpendicular to the winding axis of the first coil antenna. The feeder coil is located between the first and second coil antennas in the winding axis direction thereof. A first coil aperture is closer to a coil aperture of the first coil antenna than a second coil aperture. The second coil aperture is closer to a coil aperture of the second coil antenna than the first coil aperture. The first and second coil antennas are connected to each other in a polarity such that magnetic fluxes thereof with respect to the winding axis direction of the first coil antenna are in phase with each other.

A method includes sending, by a reader, a radio frequency (RF) signal to a wireless sensor that includes an antenna having a tail section and a head section. The tail section is for placement in an RF limited area for sensing moisture in a first location of a vehicle under test and wherein the head section is for placement in a non-RF limited area. The method further includes receiving, by the reader, an RF response to the RF signal from the wireless sensor. The first RF response includes an indication of adjustment of one or more RF characteristics of the wireless sensor, which corresponds to a variance of the one or more RF characteristics from a desired value, which, in turn, corresponds to a level of moisture at the first location. The method further includes outputting, by the reader, a message regarding the level of moisture at the first location.

A method, system, and apparatus for forming and applying an RFID label may be shown and described herein. Exemplary embodiments can include a new type of RFID inlay that has a multi-element antenna design, allowing for an RFID label thus equipped to be coupled to a carton, for example, around an edge or a corner. Thus, even if part of the RFID label is blocked or obscured, for example by neighboring cartons, the label can still be read as desired.

In accordance with a first aspect of the present disclosure, a radio frequency identification (RFID) transponder is provided, comprising: a receiver configured to receive a command from an external RFID reader, wherein the command is a first command transmitted by the RFID reader during a communication session and wherein said command comprises a at least one parameter indicative of one or more modifiable settings of the RFID transponder; and a controller configured to modify the settings of the RFID transponder in accordance with a value of said parameter. In accordance with a second aspect of the present disclosure, a corresponding method of operating a radio frequency identification (RFID) transponder is conceived.

An RFID reader antenna (1) for use in an intelligent cabinet (2), such as a smart fridge, is disclosed. The antenna (1) is configured for operation within the UHF band and has omnidirectional radiation pattern and circular polarization. The antenna comprises a dielectric substrate (11), and a ground plane (12) provided on the dielectric substrate. An aperture (13) forms an open area within the bounds of the ground plane (12). A radiating element (14; 14; 14; 14; 14) is provided on the dielectric substrate in a plane parallel to the ground plane, and arranged within the open area, when viewed from a direction perpendicular to the ground plane (12), and surrounded by the ground plane.