Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: A snowmobile has a structure that reduces and minimizes adverse affects of snow on a throttle motor. The snowmobile includes a snowmobile body including an engine room therein, an engine which is disposed inside the engine room, a throttle valve arranged to adjust intake air supplied to the engine, a throttle motor arranged to drive the throttle valve and disposed ahead of the engine, and an air box arranged to pass the intake air through toward the engine, disposed ahead of the engine and including a portion located ahead of the throttle motor.

Abstract: 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 13 of the dielectric constant ?r=3 and thickness of t=0.75 mm on both sides of the antenna. The dipole part of 1 mm wire path width of the tag-use antenna is formed in a rectangular spiral by being bent inward from both ends at bending parts at four places. The entire length of the dipole antenna when extending the four bending parts straight is featured so as to be shorter than one half of a resonance wavelength of the antenna. An inductance part is formed in the neighborhood of the center of the dipole antenna, and placed in the middle of the dipole antenna, which is formed in said rectangular spiral, of the dipole antenna.

Abstract: 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.

Abstract: An RFID tag includes a dielectric member, an antenna pattern formed on and around a surface of the dielectric member, and an IC chip that is electrically connected to the antenna pattern by means of two chip pads.

Abstract: An RFID tag includes: a tabular dielectric member 11; an antenna pattern 12 that extends over a top surface and an undersurface of the dielectric member and forms a loop antenna L1 having both ends existing on one surface of the top surface and the undersurface; a circuit chip 13 that is electrically connected to the antenna pattern; a first electrode 14 that is connected directly or via a conductor to one end 12a of the both ends of the loop antenna and spreads on the one surface of the top surface and the undersurface; and a second electrode 15 that is connected via a conductor to the other end 12b of the both ends of the loop antenna and spreads on the other surface of the top surface and the undersurface, along the first electrode 14.

Abstract: An RF tag includes a first transmission line which is connected to a grounding conductor and forms an electric closed loop to constitute a dipole antenna. A power supply circuit is connected between a branch point on the first transmission line and the grounding conductor. A second transmission line is connected to the branch point and arranged in parallel with the power supply circuit to constitute an inductor.

Abstract: 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.

Abstract: A tag device that performs high-quality radio communication without radio wave radiation or receiving characteristics being deteriorated near a person's body and without hindering communication by another IC tag. A main loop section sends and receives radio waves. The main loop section is a metal foil and has the shape of a long thin loop. The area of the main loop section is smaller than the area of a dielectric substrate. The main loop section covers part of surfaces of the dielectric substrate and part of sides of the dielectric substrate so as to put the dielectric substrate inside the loop. The main loop section is mounted in a horizontal direction of the dielectric substrate. Each of capacitive load sections is a metal foil and has a load corresponding to a capacitance component.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: A radio-frequency identification (RFID) unit includes a radio-frequency identification (RFID) tag configured to receive radio signals having a wavelength ?. 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 ?.

Abstract: 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.

Abstract: 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.

Abstract: 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.