| Patent application number | Description | Published |
|---|
| 20080291106 | Crossed dual tag and RFID system using the crossed dual tag - A crossed dual tag includes two tags each of which comprises, on one plane, a dipole antenna formed with conductors, a feeding part to which an IC chip is connected at the center of the dipole antenna, and a loop-shaped inductance part that is formed between the dipoles of the dipole antenna and connected to the dipoles of the dipole antenna in parallel with respect to the feeding part. The two tags are crossed at right angles, and stacked to contact as closely as possible so that the loops of the inductance parts overlap as wide as possible. A reader/writer of an RFID system sequentially switches the surface of a circular polarized wave of a wireless signal between forward and backward directions, and reads information written to a user memory area from the tag that responds more strongly. | 11-27-2008 |
| 20090058658 | Tag Antenna and Tag - A tag antenna is composed of a dielectric spacer, and an antenna pattern which is formed on one of surfaces of the spacer and has a size smaller than one half of a wavelength at an operating frequency, and in which a slit pattern suitable for the resistance and the capacitive components of a chip to be mounted is formed. | 03-05-2009 |
| 20090096701 | TAG-USE ANTENNA AND TAG USING THE SAME - The present invention relates to a tag-use antenna allowing a miniaturization while maintaining a constant minimal change of a communication distance. The tag-use antenna has a feed part of a folded dipole antenna of a size of 53 mm long and 7 mm wide being connected to, and equipped with, an LSI chip of Rc=500 ohms and Cc=1.4 pF and is covered with plastic resin | 04-16-2009 |
| 20090239752 | Superconducting device, fabrication method thereof, and filter adjusting method - A superconducting device comprises a dielectric substrate, and a plane-figure type resonator pattern made of a superconductive material and formed on a first face of the dielectric substrate. The resonator pattern has a notch at least a portion of which is round. | 09-24-2009 |
| 20100072287 | Loop Antenna - A loop antenna includes a dielectric substrate taking a cuboid form, and a loop part composed of a metal that covers two pairs of facing surfaces of the dielectric substrate. The loop part is formed by leaving a blank portion at the center of one surface of the pair of facing surfaces having a wider area. In the blank portion, a feeding point to an LSI chip and a capacitance part connected to the loop part in parallel to the feeding point are formed. The capacitance part is provided to compensate for an internal capacitance of the LSI chip so that a small LSI chip matches the antenna. A convex part having a length is arranged with a gap within a corresponding concave part to form a large capacitance. | 03-25-2010 |
| 20100073146 | Method Of Controlling Communication Frequencies Of Wireless Communication System, Controller Of The System, And Wireless Communication System - The wireless communication system sets at least one of the multiple wireless frequencies as a reception frequency from the wireless tag, and controls the temperature of a superconducting filter in response to the selected reception frequency, thereby the pass band or the rejection band of the superconducting filter is controlled. | 03-25-2010 |
| 20100078486 | Antenna and reader/writer device - An antenna includes a substrate made of a dielectric substance, and a conductor pattern formed on the substrate and including a feeding point, an open end, an extension part extending from the feeding point, and a spiral part extending spirally from an opposite end of the extension part to the open end. The spiral part includes a part juxtaposed with the extension part. A distance along length directions of the conductor pattern, from a zero point at which a current is zero in the part upon feeding power to the feeding point, to a point at which a line perpendicular to the part and passing through the zero point intersects the extension part, is set to a second distance at which an electric field strength generated as a combination of electric fields generated at these points upon the feeding of power enables communications with the wireless tag. | 04-01-2010 |
| 20100097191 | Wireless Tag And Method For Producing Wireless Tag - The wireless tag includes an antenna conductor; a first power-supply conductor which is electromagnetic-inductively coupled with the antenna conductor; and a second power-supply conductor which is loop-shaped and which is electrically coupled with the first power-supply conductor. | 04-22-2010 |
| 20100108770 | RADIO FREQUENCY IDENTIFICATION TAG AND ANTENNA - A radio frequency identification tag includes: a resilient base sheet; an electronic component; a reinforcing member having at least one concave portion at a periphery of the reinforcing member; and an antenna including a dipole portion and an inductance portion, the inductance portion having an impedance matching with that of the electronic component and being formed in a loop shape; the inductance portion being partly covered by the reinforcing member, the loop shape of the inductance portion being narrowed where the loop shape runs under the concave portion of the periphery of the reinforcing member and being widened outside of the reinforcing member. | 05-06-2010 |
| 20100109874 | Tag Patch Antenna And RFID Tag Using Tag Patch Antenna - A tag patch antenna includes: a slit formed in the vicinity of an edge of an antenna pattern along a part of the edge; and a feeding point to which a tag LSI is connected and which is formed by cutting an intermediate portion of the part of the edge separated by the slit from a body of the antenna pattern by a width of the slit. | 05-06-2010 |
| 20100117833 | Radio Frequency Tag And Method Of Manufacturing The Same - A metal-resistant radio frequency tag that has a broader band pass band (frequency versus communication range) characteristic compared to conventional techniques is achieved. For this purpose, the radio frequency tag according to the present invention includes a first resonator pattern, the first resonator pattern including a chip connecting section to which a chip is to be connected, and an inductance section that is capable of adjusting an impedance matching with the chip; and a second resonator pattern that is fed through electromagnetic induction coupling via the inductance section. | 05-13-2010 |
| 20100127085 | WIRELESS FREQUENCY TAG AND METHOD FOR MANUFACTURING WIRELESS FREQUENCY TAG - A wireless frequency tag includes a loop-shaped antenna pattern that is electrically connected to a chip connecting section, and a conducting member that electrically couples a part of the antenna pattern. | 05-27-2010 |
| 20100133350 | RADIO-FREQUENCY IDENTIFICATION UNIT - A radio-frequency identification (RFID) unit includes a radio-frequency identification (RFID) tag configured to receive radio signals having a wavelength λ. A block has the top surface on which the radio-frequency identification tag is set. The block is made of a metallic material. The height of the block is set equal to or larger than one sixteenth the wavelength λ. | 06-03-2010 |
| 20100214188 | ANTENNA AND ELECTRONIC DEVICE EQUIPPED WITH THE SAME - An antenna includes a dielectric substrate, a ground electrode provided on a first surface of the dielectric substrate, a first antenna element and a second antenna elements provided to a second surface of the dielectric substrate, the first and second antenna elements having an identical resonance frequency and an identical Q value, a transmission line connecting the first and second antenna elements, and a feed part provided in the transmission line. | 08-26-2010 |
| 20100231474 | Metal Pipe Managed By Wireless Tag And Wireless Tag - A metal pipe includes a slot having a predetermined length in a longitudinal direction of the metal pipe and a wireless tag that is placed inside the metal pipe and includes a power feeding unit to feed electric power to the slot and an IC chip connected to the power feeding unit, thereby functioning as an antenna of the wireless tag. The metal pipe is thus managed by the wireless tag. | 09-16-2010 |
| 20110001608 | RFID TAG - An RFID tag includes a semiconductor package, a substrate and an antenna pattern. The semiconductor package includes a semiconductor chip encapsulated therein and a plurality of connection terminals thereon. The plurality of connection terminals includes signal terminals and dummy terminals. The semiconductor package is mounted on the substrate. The antenna pattern is formed on the substrate and is electrically connected to the signal terminals. The antenna pattern is extended so as to overlap with at least a part of a bottom region of the semiconductor package. | 01-06-2011 |
| 20110068904 | RFID TAG - An RFID tag includes: a tabular dielectric member | 03-24-2011 |
| 20110080271 | ANTENNA, TAG COMMUNICATION APPARATUS, AND READER-WRITER SYSTEM - A first antenna section included in an antenna has a first conductor, supplies electric power to a plurality of tags, and transmits electromagnetic waves to and receives electromagnetic waves from the plurality of tags. One end of the first conductor is a feeding point and an other end of the first conductor is an open end. The first conductor is connected to a reader-writer device for communicating with the plurality of tags. The first conductor can output electromagnetic waves. A second antenna section included in the antenna has a second conductor one end of which is a feeding point, an other end of which is an open end, and which is opposite to the first conductor of the first antenna section with the plurality of tags therebetween. | 04-07-2011 |
| 20110121080 | WIRELESS TAG - A wireless tag includes: a wireless communication circuit that includes first and second terminals coupled to a loop antenna and performs wireless communication using the loop antenna; a first conductor that forms a first curved surface and includes a third terminal disposed at a first end of the first curved surface and coupled to the first terminal, and includes a first area including a second end of the first curved surface; and a second conductor that forms a second curved surface, includes a fourth terminal disposed at a third end of the second curved surface and coupled to the second terminal, and includes a second area including a fourth end of the second curved surface, the second area being parallel to the first area and overlapping with the first area, the first and second curved surfaces forming the loop antenna. | 05-26-2011 |
| 20110128125 | ANTENNA DEVICE AND SYSTEM INCLUDING ANTENNA DEVICE - An antenna device performs communications with an identification tag by being connected to a reading device that reads identification information of the identification tag. The antenna device includes a first power feeding unit configured to receive power from the reading device; a resonator that is electromagnetically coupled to the first power feeding unit, the resonator having a predetermined bandwidth including a working frequency of the reading device; and a second power feeding unit that is electromagnetically coupled to the resonator, the second power feeding unit being terminated according to a predetermined resistance value. | 06-02-2011 |
| 20110155814 | WIRELESS TAG - The present invention provides a wireless tag to be attached onto a disc-shaped recording medium including first and second regions. The first region, made of a nonconductive member, is disposed on the inner radial part of the recording medium, whereas the second region, including a conductive member, is disposed on the outer radial part of the recording medium. The wireless tag includes: a feed section connected to a wireless IC chip; a conductive plate including a slot therein; and a slot antenna for receiving power from the feed section. The conductive plate is formed for at least partially overlapping with the second region when the wireless tag is attached onto the inner radial part of the recording medium. The slot has a length set for obtaining an inductance enough to cause a resonance between the slot antenna and the wireless IC chip at a predetermined wireless frequency. | 06-30-2011 |
