Phoenix Solution Co., Ltd.

Other

Fec Co., Ltd.

The Government of Malaysia

Kyocera Corporation

Sk-Electronics Co., Ltd.

Smart Card Technologies Co. Ltd.

Mitsubishi Materials Corporation

Shiro Sugimura

Hideki Kobayashi

Takao Yokoshima

Tatsuji Niwata

Toshiyuki Chiba

Shuhei Taniguchi

Yasushige Ueoka

Takuya Hayashi

Shuichi Yamamoto

Koji Yamashita

Shoji Hashimoto

Kazuo Ogata

Masakazu Fujii

Takahiro Ishibashi

Hisao Kanaoka

Takaaki Sakai

Hayato Nabeshima

An RFID tagfor a rubber product is provided with a coupling transformer, an RF chipconnected to a secondary side of the coupling transformer, a printed circuit boardon which the RF chip is mounted, and an antenna, wherein the antenna comprises a coil section, a first elementextending from one end of the coil section, and a second elementextending from another end of the coil section in parallel with the first element and shorter than the first element, the coil section has fewer windings than the coupling transformeron the secondary side, and the printed circuit boardis held in a gap between strands of the coil section such that the coil section forms a primary side of the coupling transformer.

RFID tag for rubber product and method of manufacturing RFID tag for rubber product

To provide a coil that has satisfactory characteristics even when the coil is used by being attached to or embedded in a tire, the coil forming an RFID tag in combination with a substrate on which an RF chip and a pattern coil connected to the RF chip are mounted. A coilis held in a housingaccommodating a substrateand is wound around the substrate. A first end of the coilextends from the substrateand forms a first elementof an antenna. A second end of the coilextends from the substrateand forms a second elementof the antenna. The first elementand the second elementare arranged in parallel to each other, and the first elementhas a longer extension length than the second element. The coiland a pattern coilform a coupling transformer. The number of windings in the coilis smaller than the number of windings in the pattern coil

Coil for RFID tag

[Problem] To provide: an RF tag antenna which is able to be fitted to a tire that contains a steel wire and a carbon powder; an RF tag; a tire which is provided with an RF tag; and a tire with a built-in RF tag. [Solution] An RF tag antennaaccording to the present invention is used by being fitted to a tirethat contains a steel wireand a carbon powder; and the RF tag antennacomprises a ground partand a potential difference formation part. The potential difference formation partand the ground partconstitute a resonant circuit (LC); and the ground partis electrically connected to the steel wire

RF tag antenna, RF tag, tire provided with RF tag, and tire with built-in RF tag

An RFID tagwith a boost antenna includes a boost antennaand an RFID tag, wherein the boost antennaincludes: a radiation unitwhich is conductive; a ground unitwhich faces the radiation unitand is conductive; and a short circuit unitwhich connects one end of the radiation unitand one end of the ground unit, and electrically connecting the radiation unitand the ground unitwith each other, and wherein the RFID tagis arranged at a position close to the short circuit uniton the ground unit, wherein each of the boost antennaand the RFID taghas resonance characteristics.

RFID tag with boost antenna, conductor provided with RFID tag with boost antenna, and RFID system including RFID tag with boost antenna

[Problem] To provide an antenna for an RF tag and an RF tag with which a communication distance between reading devices can be extended. [Solution] This antenna for an RF tag is provided with: an insulation member; a waveguide elementprovided on one side of the insulation member; a waveguide elementdisposed so as to face the waveguide elementand provided on the other side of the insulation member; a power supply unithaving one end electrically connected to the waveguide element; and a short-circuit unithaving one end electrically connected to the wave guide elementand the other end electrically connected to the waveguide element, wherein the permittivity of an insulation region Aon the waveguide elementside among regions sandwiched between the waveguide elementand the waveguide elementis different from the permittivity of an insulation region Aon the waveguide elementside among said regions.

Antenna for RF tag, and RF tag

An RF tag has a particular structure of an RF tag antenna to which an IC chip is mounted. The RF tag antenna includes: an inductor pattern section having a C-shape and configured in a form of a flat plate; a notch section formed by cutting out a periphery of the inductor pattern section; an antenna section formed around the notch section; and a ground section provided in continuation with the inductor pattern section and configured in a form of a flat plate.

RF tag antenna, RF tag, and RF tag having conductive body formed therein

There is provided an RF tag that can be mounted in a cavity of a member formed of a conductor having the cavity therein, and has high communication performance. An RF tagof the present invention is an RF tag that is mounted in a cavityof a conductor-made memberhaving the cavitytherein, and includes at least a free space antennaa resonance circuitan IC chipa closed space antennaand a substratefor supporting the closed space antenna, a portion of the free space antenna is exposed from the cavity to the outside, and the substrate supports the closed space antenna so that the closed space antenna is not in contact with the inner surface of the conductor-made member. The closed space antenna, the substrate and the conductor-made member forms a capacitor portion C

RF tag

[Problem to be Solved] To provide an RF tag antenna capable of improving readability and a method of manufacturing the same, and an RF tag. [Solution] An RF tag antennaaccording to an embodiment includes a first insulating substratehaving a first principal surface and a second principal surface, a first waveguide deviceprovided on the first principal surface, a second waveguide deviceprovided on the second principal surface, a power feeding partelectrically connected to the second waveguide deviceat one end thereof, and a short-circuit partelectrically connected to the first waveguide deviceat one end thereof and to the second waveguide deviceat another end thereof, the first insulating substrate, the first waveguide device, the second waveguide device, the power feeding partand the short-circuit partform a plate-shaped inverted-F antenna that receives a radio wave transmitted from a reader, and an inductor pattern L formed by the first waveguide device, the short-circuit part, the second waveguide deviceand the power feeding partand a capacitorformed by the first waveguide device, the second waveguide deviceand the first insulating substrateform a resonant circuit that resonates in a frequency band of the radio wave.

RF tag antenna and method for manufacturing same, and RF tag

An antenna of the present invention includes a laminate body including a conductor core, an insulator layer, and a conductor pattern. The conductor pattern is a conductor layer formed of a conducting body disposed on a radially outer side of the insulator layer. The conductor core and the conductor pattern are connected to each other in such a manner that a current is made to flow in a direction from the conductor core to the conductor pattern or in a direction opposite thereto so as to coincide with a power supply direction.

Antenna and method for producing the same

In order to eliminate limitation upon the frequency of a carrier wave from externally, this IC chip for identification includes: a power supply section which receives this carrier wave from outside and creates an internal power supply; a clock signal generation section for read out which generates an internal clock signal for read out based upon a clock signal pulse which is superimposed upon an optical signal from externally; a memory section; and an output section which serially reads out data in the memory section according to the internal clock signal for read out, and load modulates the carrier wave from outside based thereupon.

IC chip for identification, method for reading out data therefrom, and method for writing data thereinto

Restrictions on the frequency of a carrier signal are removed. This invention comprises a power section for receiving the carrier signal and creating an internal voltage, a clock-generating section for creating an internal clock based on a clock pulse that is carried by the carrier signal, a memory section, a writing section for storing data that is carried on an optical signal in the memory section, and an output section for reading the data in the memory and load-modulating the carrier signal.

IC chip for identification, data-reading method, and data-writing method

An antenna includes a plurality of bases stacked in a thickness direction, conductor patterns formed on the bases, respectively, and conducting sections for electrically interconnecting the conductor patterns. The conductor patterns form inductance components and capacitance components.

Antenna formed from a plurality of stacked bases

A compact antenna enabling to produce high gain is based on an antenna main body is constructed in such a way that a plurality of resonance sections, each having parallel-connected respective inductance sections and capacitance sections, are electrically connected in series, and a frequency adjusting capacitance section is connected electrically in series between a ground section at the ground potential and an exit end of the antenna main body. The resonance sections are constructed so that that the characteristic frequency curves overlap one another at least in the width portion to enable the antenna man body as a whole to resonate at substantially one resonance frequency, which is higher than the normal vibration frequency at which each resonance section resonates.

Antenna and radio wave receiving/transmitting apparatus therewith and method of manufacturing the antenna

An antenna is provided to improve the gain and to eliminate various negative effects caused by a surrounding environment in which the antenna is mounted, such as the effects caused by neighboring metal plates and the like, while providing an antenna structure to facilitate its assembly into various communication devices. The antenna emitting radio waves at a center frequency has an antenna main body and a grounding line section connected to the ground-side of the coaxial cable for supplying power to the antenna main body. The grounding line section starts from a reference point and extends in a loop so as to surround the antenna main body, and portions of the conductor line are severed so as to provide a first end terminal and a second end terminal so that the length of the conductor line from the reference point to the first end terminal corresponds to one quarter of a wavelength of the center frequency or its integral multiple.

Growing community of inventors

Kanazawa, Japan

Shiro Sugimura