A device includes a first inductor and a second inductor. The first inductor has a first inductive coupling profile. A first circuit component is coupled to the first inductor. A second inductor has a second inductive coupling profile. A second circuit component coupled to the second inductor.

An electromagnetic-coupling dual IC card includes an IC module and a plate-like card body. The IC module includes a module substrate having a first surface and a second surface, contact terminals provided on the first surface of the module substrate to be contactable with an external contact-type device, an IC chip having a contact communication function and a contactless communication function and disposed on the second surface, and a first connecting coil provided on the first surface. The plate-like card body includes an antenna sheet embedded therein and has a recess for holding the IC module, the antenna sheet being provided with a coupling coil to be electromagnetically coupled to the first connecting coil, and a main coil connected to the coupling coil to perform contactless communication with an external contactless-type device. The first connecting coil does not overlap with the contact terminals in plan view.

An RFID security device for product packaging is disclosed. The security device includes an RFID tag disposed on a first portion of a product package, and a booster antenna disposed on a second portion of the product package. The RFID tag and booster antenna are positioned on the product package so that the RFID tag will be electromagnetically coupled to the booster antenna when the product package is closed, and the RFID tag will be decoupled from the booster antenna when the product package is open.

The manufacturing method of the antenna pattern has: a step of forming a dipole antenna on a front surface of a continuous substrate while conveying the continuous substrate; and a step of forming a sub-element on a back surface of the continuous substrate.

The disclosure relates to a device for wirelessly transmitting and receiving data of an RFID tag introduced in an electromagnetically shielded housing, wherein a transmission region is provided in the housing wall of the housing and wherein a transceiver connected to the RFID tag is also provided, which transceiver is configured to transmit and/or receive data from the RFID tag through the transmission region, wherein a double coil formed by two coil assemblies is provided directly above or below the transmission region for coupling to an external receiving unit of a reading device and for coupling to the transceiver.

A radio frequency identification (RFID) switch tag is disclosed. This RFID switch tag includes a base component having an ultra-high frequency (UHF) booster, and a detachable component having at least one UHF RFID module and a high frequency (HF) RFID module. In some embodiments, the detachable component is positioned in close proximity to the base component in a first configuration of the RFID switch tag such that the at least one UHF RFID module is sufficiently coupled to the UHF booster in the base component to form an UHF RFID system having a desired performance. The detachable component can also be separated from the base component to obtain a second configuration of the RFID switch tag, and the HF RFID module remains functional within the detached detachable component so that the detachable component can be used as a standalone HF RFID tag.

An accessory for a tag device and a RFID tagging device using the accessory. The accessory includes a tag holder defining with a slot arranged to receive the tag device and to removably secure the tag device in a predetermined position; and an antenna provided on the tag holder, wherein the antenna has a radiator arranged to couple to a feeder of the tag device when the tag device is positioned in the predetermined position within the slot.

A noncontact communication medium includes an antenna coil that is formed on a substrate having a through-hole and induces power with application of a magnetic field from an outside, and a processing circuit that operates using the power induced by the antenna coil. The processing circuit is inserted in the middle of the antenna coil. The antenna coil is wound in a loop shape along an outer periphery of the substrate. An outer peripheral end of the antenna coil is connected to the through-hole. A portion of the antenna coil on the substrate facing a position of the through-hole has a shape recessed to an inner peripheral side of the antenna coil in a winding direction.

A noncontact communication medium comprises an antenna coil that is formed in a substrate and induces power with application of a magnetic field from an outside, and a processing circuit that operates using the power induced by the antenna coil. The substrate has a plurality of layers in a thickness direction. The antenna coil is wound in a loop shape in a first layer among the plurality of layers. One end and the other end of the antenna coil are electrically connected through an auxiliary antenna coil wound in a loop shape in a second layer different from the first layer among the plurality of layers. At least one of the first layer or the second layer is buried in the substrate.

Disclosed herein is an antenna device that includes a substrate; a conductor pattern formed on the substrate and including a spiral or loop-shaped antenna coil, a spiral or loop-shaped coupling coil being connected to the antenna coil and having a diameter smaller than that of the antenna coil, and a spiral-shaped booster coil at least partially overlapping the antenna coil through the substrate without being connected thereto; and a resonance capacitor connected to the booster coil. The number of turns of the booster coil is larger than that of the antenna coil.