Patent application number | Description | Published |
20090021352 | RADIO FREQUENCY IC DEVICE AND ELECTRONIC APPARATUS - A radio frequency IC device includes a radio frequency IC chip arranged to process a transmitted/received signal, a printed circuit board on which the radio frequency IC chip is mounted, an electrode arrange on the circuit board, and a loop electrode that is arranged on the circuit board so that the loop electrode is electrically connected to the radio frequency IC chip and is coupled to the electrode by electromagnetic coupling. The electrode is coupled to the radio frequency IC chip via the loop electrode so as to transmit or receive a high-frequency signal. A power supply circuit board including a resonance circuit and/or a matching circuit may be disposed between the radio frequency IC chip and the loop electrode. | 01-22-2009 |
20090065594 | WIRELESS IC DEVICE AND WIRELESS IC DEVICE COMPOSITE COMPONENT - A wireless IC device includes a wireless IC chip, a feed circuit board having the wireless IC chip mounted thereon and including a feed circuit including inductance elements, and a radiation plate electromagnetically coupled to the inductance elements in the feed circuit. A high-permeability magnetic body made of a high-permeability magnetic material is provided in the feed circuit board and a portion of the inductance elements is provided in the high-permeability magnetic body. | 03-12-2009 |
20090066592 | SYSTEM FOR INSPECTING ELECTROMAGNETIC COUPLING MODULES AND RADIO IC DEVICES AND METHOD FOR MANUFACTURING ELECTROMAGNETIC COUPLING MODULES AND RADIO IC DEVICES USING THE SYSTEM - A system for inspecting an electromagnetic coupling module includes a radio IC chip and a feeder circuit board on which the radio IC chip is mounted, the feeder circuit board includes a feeder circuit including an inductance element. This inspecting system measures the electromagnetic coupling module by electromagnetically coupling a probe of a measuring device to the electromagnetic coupling module by at least one of electrostatic coupling and electromagnetic coupling. In addition, the electromagnetic coupling modules are manufactured using this inspecting system. | 03-12-2009 |
20090080296 | OPTICAL DISC - An optical disc includes an electromagnetic coupling module mounted therein. The electromagnetic coupling module includes a wireless IC chip and a feeder circuit substrate in which a feeder circuit including a resonant circuit having a predetermined resonant frequency is disposed. The electromagnetic coupling module is electromagnetically coupled to a reflective film defining a metal thin film of the optical disc, and the reflective film defines an antenna or radiation pattern of the electromagnetic coupling module. | 03-26-2009 |
20090109102 | ANTENNA AND RADIO IC DEVICE - An antenna includes a feeder terminal and a resonance circuit. The resonance circuit is defined by a capacitance element and an inductance element and includes first and second radiation plates. The capacitance element is electromagnetically coupled to the first radiation plate, and the inductance element is electromagnetically coupled to the second radiation plate. A radio IC device includes an electromagnetic coupling module including a feeder circuit substrate on which a radio IC chip is mounted, and radiation plates. The feeder circuit substrate includes an inductance element and a capacitance element. One of the radiation plates faces and is magnetically coupled to the inductance element. The other radiation plate faces and is electrically coupled to the capacitance element. The radio IC chip is operated by signals received by the radiation plates, and a response signal from the radio IC chip is radiated from the radiation plates. | 04-30-2009 |
20090135079 | WIRELESS IC DEVICE AND COMPONENT FOR WIRELESS IC DEVICE - A wireless IC device includes a wireless IC chip, a power supply circuit board upon which the wireless IC chip is mounted, and in which a power supply circuit is provided, the power supply circuit includes a resonant circuit having a predetermined resonant frequency, and a radiation pattern, which is adhered to the underside of the power supply circuit board, for radiating a transmission signal supplied from the power supply circuit, and for receiving a reception signal to supply this to the power supply circuit. The resonant circuit is an LC resonant circuit including an inductance device and capacitance devices. The power supply circuit board is a multilayer rigid board or a single-layer rigid board, and between the wireless IC chip and the radiation pattern is connected by DC connection, magnetic coupling, or capacitive coupling. | 05-28-2009 |
20090153332 | TEST SYSTEM FOR RADIO FREQUENCY IC DEVICES AND METHOD OF MANUFACTURING RADIO FREQUENCY IC DEVICES USING THE SAME - A test system for a radio frequency IC device includes a radio frequency IC chip and a radiation strip. The characteristics of the radio frequency IC device are measured by bringing the tip of a probe of a test apparatus in direct contact with a portion of the radiation strip and thereby providing a radio frequency signal. The tip of the probe is made to be a flat plate so as to obtain closer and more stable contact with the radiation strip. | 06-18-2009 |
20090179810 | ARTICLE HAVING ELECTROMAGNETIC COUPLING MODULE ATTACHED THERETO - An article having an electromagnetic coupling module attached thereto includes an electromagnetic coupling module and a PET bottle having the electromagnetic coupling module bonded thereto. The electromagnetic coupling module includes a wireless IC chip arranged to process transmission and reception signals and the feed circuit board having the wireless IC chip mounted thereon. The feed circuit board includes a feed circuit including a resonant circuit having a predetermined resonant frequency. The feed circuit performs characteristic impedance matching between the PET bottle and the wireless IC chip. The PET bottle functions as a radiator arranged to radiate a transmission signal supplied from the feed circuit using electromagnetic field coupling and to supply a received reception signal to the feed circuit using electromagnetic field coupling. | 07-16-2009 |
20090262041 | WIRELESS IC DEVICE - An electromagnetic coupling module includes a wireless IC chip and a functional substrate. The electromagnetic coupling module is mounted on a radiation plate, preferably using an adhesive, for example. On the upper surface of a base material of the radiation plate, two long radiation electrodes are provided. On the undersurface of the functional substrate, capacitive coupling electrodes that individually face inner ends of the radiation electrodes are provided. A matching circuit arranged to perform the impedance matching between the wireless IC chip and each of the radiation electrodes includes the capacitive coupling electrodes. As a result, it is possible to reduce the size, facilitate the design, and reduce the cost of a wireless IC device. | 10-22-2009 |
20090266900 | WIRELESS IC DEVICE AND ELECTRONIC APPARATUS - A wireless IC device that is miniaturized, allows simple and low-cost mounting of a wireless IC, and eliminates the possibility of damage occurring to the wireless IC due to static electricity, and an electronic apparatus equipped with the wireless IC device, includes a wireless IC chip that processes transmission and reception signals, and a feeder circuit substrate that includes a resonant circuit having an inductance element. Feeder electrodes are provided on a surface of the feeder circuit substrate and are electromagnetically coupled to the resonant circuit. The feeder electrodes and are electromagnetically coupled to radiation plates and provided for a printed wiring board. The wireless IC chip is activated by a signal received by the radiation plates and a response signal from the wireless IC chip is radiated outward from the radiation plates. | 10-29-2009 |
20090277966 | WIRELESS IC DEVICE - A wireless IC device includes a wireless IC chip arranged to process a transmission/received signal, a matching inductance element and a planar electrode which are provided on the surface of a feeder circuit board formed by a flexible dielectric, and a loop-shaped radiation plate provided on the undersurface of the feeder circuit board. Both ends of the radiation plate are coupled to a resonance circuit including an inductance element by electromagnetic field coupling. The wireless IC chip is operated using a signal received by the radiation plate. A response signal transmitted from the wireless IC chip is externally transmitted from the radiation plate. | 11-12-2009 |
20090277967 | WIRELESS IC DEVICE - A wireless IC device includes a radiating plate, a wireless IC chip, and a feeder circuit board, on which the wireless IC chip is mounted. The feeder circuit board includes a resonant circuit with an inductance element, and the resonant circuit is electromagnetically coupled with the radiating plate. The wireless IC chip is interposed between the radiating plate and the feeder circuit board. | 11-12-2009 |
20090302121 | WIRELESS IC DEVICE - A wireless IC device that is operable in a wide band and is suitable for RFID systems includes a radiating plate and an electromagnetically coupled module constituted by a wireless IC that processes transmitted/received signals and a feeding circuit board having a feeding circuit and coupled with the wireless IC. The radiating plate includes a linear electrode bent at a bent portion and apparently sectioned into two linear electrode portions having different lengths. The electromagnetically coupled module is arranged such that the feeding circuit board and the linear electrode portions are electromagnetically coupled. The wireless IC is operated by signals received by the radiating plate, and response signals from the wireless IC are radiated outward from the radiating plate. | 12-10-2009 |
20090308938 | WIRELESS IC DEVICE AND COMPONENT FOR WIRELESS IC DEVICE - A wireless IC device includes a wireless IC chip, a power supply circuit board upon which the wireless IC chip is mounted, and in which a power supply circuit is provided, the power supply circuit includes a resonant circuit having a predetermined resonant frequency, and a radiation pattern, which is adhered to the underside of the power supply circuit board, for radiating a transmission signal supplied from the power supply circuit, and for receiving a reception signal to supply this to the power supply circuit. The resonant circuit is an LC resonant circuit including an inductance device and capacitance devices. The power supply circuit board is a multilayer rigid board or a single-layer rigid board, and between the wireless IC chip and the radiation pattern is connected by DC connection, magnetic coupling, or capacitive coupling. | 12-17-2009 |
20100038437 | WIRELESS IC DEVICE - A wireless IC device has a structure such that the size of a radiation plate and a radiation characteristic may be determined irrespective of an impedance of a wireless IC chip. The wireless IC device includes a wireless IC chip that is arranged to process transmission and reception signals, a spiral matching inductance element and a plane electrode that are located on a surface of a feeder circuit substrate, and a coil-shaped radiation plate located on a radiation substrate. Plane electrodes connected to both ends of the radiation plate are electromagnetically coupled respectively to the inductance element and the plane electrode. The wireless IC chip is operated by a signal received by the radiation plate, and a response signal from the wireless IC chip is radiated outside from the radiation plate. | 02-18-2010 |
20100103058 | RADIO IC DEVICE - A radio IC device includes an electromagnetic coupling module includes a radio IC chip arranged to process transmitted and received signals and a feed circuit board including an inductance element. The feed circuit board includes an external electrode electromagnetically coupled to the feed circuit, and the external electrode is electrically connected to a shielding case or a wiring cable. The shielding case or the wiring cable functions as a radiation plate. The radio IC chip is operated by a signal received by the shielding case or the wiring, and the answer signal from the radio IC chip is radiated from the shielding case or the wiring cable to the outside. A metal component functions as the radiation plate, and the metal component may be a ground electrode disposed on the printed wiring board. | 04-29-2010 |
20100156563 | WIRELESS IC DEVICE AND COMPONENT FOR WIRELESS IC DEVICE - A wireless IC device includes a wireless IC chip, a power supply circuit board upon which the wireless IC chip is mounted, and in which a power supply circuit is provided, the power supply circuit includes a resonant circuit having a predetermined resonant frequency, and a radiation pattern, which is adhered to the underside of the power supply circuit board, for radiating a transmission signal supplied from the power supply circuit, and for receiving a reception signal to supply this to the power supply circuit. The resonant circuit is an LC resonant circuit including an inductance device and capacitance devices. The power supply circuit board is a multilayer rigid board or a single-layer rigid board, and between the wireless IC chip and the radiation pattern is connected by DC connection, magnetic coupling, or capacitive coupling. | 06-24-2010 |
20100244215 | WIRELESS IC DEVICE - A wireless IC device includes a radiating plate, a wireless IC chip, and a feeder circuit board, on which the wireless IC chip is mounted. The feeder circuit board includes a resonant circuit with an inductance element, and the resonant circuit is electromagnetically coupled with the radiating plate. The wireless IC chip is interposed between the radiating plate and the feeder circuit board. | 09-30-2010 |
20100308118 | WIRELESS IC DEVICE, ELECTRONIC APPARATUS, AND METHOD FOR ADJUSTING RESONANT FREQUENCY OF WIRELESS IC DEVICE - A wireless IC device and an electronic apparatus are obtained, which can achieve miniaturization and improve the gain of a radiator plate (electrode) without providing a dedicated antenna. A wireless IC device is provided, in which a loop electrode is provided in a ground electrode provided on a printed wiring circuit board, and in which a wireless IC chip that processes a transmission/reception signal or an electromagnetic coupling module is coupled to the loop electrode. The ground electrode is coupled to the wireless IC chip or the electromagnetic coupling module via the loop electrode, and transmits or receives a high-frequency signal. The ground electrode is formed with a slit for adjusting a resonant frequency thereof. | 12-09-2010 |
20110074584 | RADIO FREQUENCY IC DEVICE AND ELECTRONIC APPARATUS - A radio frequency IC device includes a radio frequency IC chip arranged to process a transmitted/received signal, a printed circuit board on which the radio frequency IC chip is mounted, an electrode arrange on the circuit board, and a loop electrode that is arranged on the circuit board so that the loop electrode is electrically connected to the radio frequency IC chip and is coupled to the electrode by electromagnetic coupling. The electrode is coupled to the radio frequency IC chip via the loop electrode so as to transmit or receive a high-frequency signal. A power supply circuit board including a resonance circuit and/or a matching circuit may be disposed between the radio frequency IC chip and the loop electrode. | 03-31-2011 |
20110127337 | WIRELESS IC DEVICE AND ELECTRONIC APPARATUS - A wireless IC device that is miniaturized, allows simple and low-cost mounting of a wireless IC, and eliminates the possibility of damage occurring to the wireless IC due to static electricity, and an electronic apparatus equipped with the wireless IC device, includes a wireless IC chip that processes transmission and reception signals, and a feeder circuit substrate that includes a resonant circuit having an inductance element. Feeder electrodes are provided on a surface of the feeder circuit substrate and are electromagnetically coupled to the resonant circuit. The feeder electrodes and are electromagnetically coupled to radiation plates and provided for a printed wiring board. The wireless IC chip is activated by a signal received by the radiation plates and a response signal from the wireless IC chip is radiated outward from the radiation plates. | 06-02-2011 |
20110181475 | ANTENNA AND WIRELESS IC DEVICE - An antenna and a wireless IC device that includes the antenna are provided for which the manufacturing process is simple and for which there is a low probability of a poor connection occurring between a feeder portion and a radiation electrode. An antenna includes a radiation electrode that is provided on a main surface of an insulator board, a ground electrode and/or a counter electrode that is arranged so as to oppose the radiation electrode, and a magnetic field electrode that is connected to the radiation electrode through a connection portion. The magnetic field electrode is defined by line-shaped electrodes and feeds a signal to the radiation electrode from a feeder portion defined by ends of the line-shaped electrodes through the magnetic field electrode. | 07-28-2011 |
20110278362 | WIRELESS IC DEVICE - A wireless IC device includes a dielectric body, a metal pattern that is provided on a surface of the dielectric body and that defines a radiator, and a wireless IC element coupled to feeding portions of the metal pattern. A plurality of slits are provided on at least one surface of the dielectric body so as to provide flexibility for the dielectric body. | 11-17-2011 |
20110279326 | WIRELESS IC DEVICE - A wireless IC device includes a substantially rectangular parallelepiped dielectric body, a metal pattern that is provided on the surface of the dielectric body via a film and functions as a radiator, and a wireless IC element coupled to feeding portions of the metal pattern. The dielectric body has a laminated structure including a folded flexible dielectric layer. Surfaces of the dielectric layer which face each other after the dielectric layer has been folded are non-bonded surfaces. | 11-17-2011 |
20120006904 | WIRELESS IC DEVICE COMPONENT AND WIRELESS IC DEVICE - A wireless IC device includes a wireless IC chip, a coupling electrode, and a radiation plate. The coupling electrode includes coupling portions arranged to be coupled to the wireless IC chip and a pair of opposing ends. The pair of opposing ends are capacitively coupled to each other and oppose the radiation plate to be coupled to the radiation plate. The wireless IC chip uses the radiation plate as an antenna to transmit and receive signals having certain frequencies to and from an RFID system. | 01-12-2012 |
20120056001 | OPTICAL DISC - An optical disc includes an electromagnetic coupling module mounted therein. The electromagnetic coupling module includes a wireless IC chip and a feeder circuit substrate in which a feeder circuit including a resonant circuit having a predetermined resonant frequency is disposed. The electromagnetic coupling module is electromagnetically coupled to a reflective film defining a metal thin film of the optical disc, and the reflective film defines an antenna or radiation pattern of the electromagnetic coupling module. | 03-08-2012 |
20120169553 | ANTENNA AND WIRELESS IC DEVICE - An antenna includes two feeding points, and includes a loop-shaped loop electrode and an auxiliary electrode electrically connected to the loop electrode and located at a position along the outer circumference of the loop electrode. The first end portion of the auxiliary electrode is electrically connected to the vicinity of one feeding point of the loop electrode. The second end portion of the auxiliary electrode is open. A resonant circuit is defined by the auxiliary electrode and the loop electrode to enhance the impedance of the antenna, compared with a case in which the antenna is configured using the simple loop electrode, and it is easy to achieve impedance matching with the wireless IC. | 07-05-2012 |
20120217312 | WIRELESS IC DEVICE AND ELECTRONIC APPARATUS - A wireless IC device that is miniaturized, allows simple and low-cost mounting of a wireless IC, and eliminates the possibility of damage occurring to the wireless IC due to static electricity, and an electronic apparatus equipped with the wireless IC device, includes a wireless IC chip that processes transmission and reception signals, and a feeder circuit substrate that includes a resonant circuit having an inductance element. Feeder electrodes are provided on a surface of the feeder circuit substrate and are electromagnetically coupled to the resonant circuit. The feeder electrodes and are electromagnetically coupled to radiation plates and provided for a printed wiring board. The wireless IC chip is activated by a signal received by the radiation plates and a response signal from the wireless IC chip is radiated outward from the radiation plates. | 08-30-2012 |
20120292396 | WIRELESS IC DEVICE AND COMPONENT FOR WIRELESS IC DEVICE - A wireless IC device includes a wireless IC chip, a power supply circuit board upon which the wireless IC chip is mounted, and in which a power supply circuit is provided, the power supply circuit includes a resonant circuit having a predetermined resonant frequency, and a radiation pattern, which is adhered to the underside of the power supply circuit board, for radiating a transmission signal supplied from the power supply circuit, and for receiving a reception signal to supply this to the power supply circuit. The resonant circuit is an LC resonant circuit including an inductance device and capacitance devices. The power supply circuit board is a multilayer rigid board or a single-layer rigid board, and between the wireless IC chip and the radiation pattern is connected by DC connection, magnetic coupling, or capacitive coupling. | 11-22-2012 |
20120292397 | WIRELESS IC DEVICE AND COMPONENT FOR WIRELESS IC DEVICE - A wireless IC device includes a wireless IC chip, a power supply circuit board upon which the wireless IC chip is mounted, and in which a power supply circuit is provided, the power supply circuit includes a resonant circuit having a predetermined resonant frequency, and a radiation pattern, which is adhered to the underside of the power supply circuit board, for radiating a transmission signal supplied from the power supply circuit, and for receiving a reception signal to supply this to the power supply circuit. The resonant circuit is an LC resonant circuit including an inductance device and capacitance devices. The power supply circuit board is a multilayer rigid board or a single-layer rigid board, and between the wireless IC chip and the radiation pattern is connected by DC connection, magnetic coupling, or capacitive coupling. | 11-22-2012 |
20120306719 | COMPOSITE PRINTED WIRING BOARD AND WIRELESS COMMUNICATION SYSTEM - A composite printed wiring board includes a parent board and a child board that is mounted on the parent board. A wireless IC element that processes a high-frequency signal, a loop-shaped electrode that is coupled to the wireless IC element, and a first radiator that is coupled to the loop-shaped electrode are provided on the child board. A second radiator that is coupled to the loop-shaped electrode via an electromagnetic field is provided on the parent board. | 12-06-2012 |
20130002513 | ANTENNA AND WIRELESS COMMUNICATION DEVICE - An antenna and a wireless communication device which are suitable for an RFID system and in which radiation characteristics are prevented from being changed as a result of impedance adjustment are configured such that the antenna includes a first loop electrode that has an external shape of a regular polygon or circle and that includes a pair of open ends, feeding portions arranged inside the first loop electrode, a second loop electrode connected to the feeding portions, and a coupling electrode that couples the first loop electrode and the second loop electrode to each other. The wireless communication device is obtained by coupling the wireless communication element which processes a high-frequency signal to the feeding portions. | 01-03-2013 |
20130140369 | WIRELESS IC DEVICE - A wireless IC device that improves radiation gain without increasing substrate size and easily adjusts impedance, includes a multilayer substrate including laminated base layers. On a side of an upper or first main surface of the multilayer substrate, a wireless IC element is arranged to process a high-frequency signal. On a side of a lower or second main surface of the multilayer substrate, a first radiator is provided and is coupled to the wireless IC element via a feeding circuit including first interlayer conductors. On the side of the first main surface, a second radiator is provided and is coupled to the first radiator via second interlayer conductors. | 06-06-2013 |
20130176184 | WIRELESS COMMUNICATION DEVICE - A wireless communication device includes a flexible base material film, a flexible antenna conductor that is provided in substantially the entire region of one main surface of the flexible base material film and that includes a first radiation element and a second radiation element facing each other through a slit, an inductor substrate that is connected to the first radiation element and the second radiation element so as to extend across the slit, the inductor substrate including an inductance element, and a wireless IC element that is connected in parallel to the inductance element and that is mounted in the inductor substrate. The wireless IC element is connected to the first radiation element and the second radiation element so as to extend across the slit. | 07-11-2013 |
20130200162 | RFID CHIP PACKAGE AND RFID TAG - An RFID chip package includes an RFID chip including a voltage booster circuit and processing an RF signal in a UHF band and a power supply circuit connected to the RFID chip and including at least one inductance element. A reactance component of an input/output impedance at an antenna-connecting input/output terminal of the power supply circuit is substantially 0Ω. | 08-08-2013 |
20130200163 | WIRELESS IC DEVICE COMPONENT AND WIRELESS IC DEVICE - A wireless IC device includes a wireless IC chip, a coupling electrode, and a radiation plate. The coupling electrode includes coupling portions arranged to be coupled to the wireless IC chip and a pair of opposing ends. The pair of opposing ends are capacitively coupled to each other and oppose the radiation plate to be coupled to the radiation plate. The wireless IC chip uses the radiation plate as an antenna to transmit and receive signals having certain frequencies to and from an RFID system. | 08-08-2013 |
20130293356 | INSPECTION METHOD AND INSPECTION DEVICE FOR RFID TAG - An RFID tag inspection method includes the steps of transmitting a measurement signal from a reader/writer simultaneously to a plurality of RFID tags arrayed on a collective base member and configured to process radio signals, receiving response waves from the individual RFID tags in a batch by the reader/writer, and determining, based on strengths and a number of received signals read by the reader/writer, whether or not the individual RFID tags are acceptable. Thus, acceptance/rejection inspection can be performed on the plural RFID tags, which are arrayed on the collective base member, in a batch. | 11-07-2013 |
20130320098 | WIRELESS INTEGRATED CIRCUIT DEVICE AND METHOD OF MANUFACTURING THE SAME - A wireless IC device includes a base material sheet having a long-side direction and a short-side direction, an antenna element provided on a surface of the base material sheet and that includes two radiation portions extending in the long side direction with a predetermined gap therebetween and two connection portions located in a gap through which the two radiation portions oppose each other, a wireless IC element connected to the two connection portions via a conductive bonding material, and a resist layer that covers the two radiation portions and does not cover the two connection portions and at least areas adjacent to the connection portions in the short-side direction. | 12-05-2013 |
20130334321 | RADIO IC DEVICE - A radio IC device includes an electromagnetic coupling module includes a radio IC chip arranged to process transmitted and received signals and a feed circuit board including an inductance element. The feed circuit board includes an external electrode electromagnetically coupled to the feed circuit, and the external electrode is electrically connected to a shielding case or a wiring cable. The shielding case or the wiring cable functions as a radiation plate. The radio IC chip is operated by a signal received by the shielding case or the wiring, and the answer signal from the radio IC chip is radiated from the shielding case or the wiring cable to the outside. A metal component functions as the radiation plate, and the metal component may be a ground electrode disposed on the printed wiring board. | 12-19-2013 |
20130335281 | WIRELESS COMMUNICATION DEVICE - A wireless communication device includes a wireless IC device, a multilayer substrate including a stack of a plurality of dielectric layers, a resonant circuit that is connected to the wireless IC device and that includes a capacitance element provided in the multilayer substrate and an inductance element provided outside the multilayer substrate, and a radiation conductor connected to the resonant circuit. | 12-19-2013 |
20130341415 | WIRELESS IC DEVICE - A wireless IC device includes a wireless IC element, a power supply circuit substrate including a laminate of a plurality of base layers and a power supply circuit connected to the wireless IC element, and a radiating element connected to the power supply circuit. The power supply circuit includes a first coil element connected in series with the wireless IC element, and a second coil element connected in parallel with the wireless IC element. The first coil element and the second coil element are wound and arranged such that winding axes of the first and second coil elements coincide or substantially coincide with each other and directions of magnetic fields generated in the respective first and second coil elements are opposite to each other. | 12-26-2013 |
20140061319 | RADIO IC DEVICE - A radio IC device includes a flexible dielectric base, a radiation element that is a metal film or a metal foil wrapped around the dielectric base, and a radio IC element mounted on the radiation element. The radiation element includes, in a portion other than a portion where the radio IC element is disposed, a bonded portion that is bonded to the dielectric element and a non-bonded portion that is not bonded to the dielectric element. The radio IC element is arranged to be directly opposed to the dielectric element with the portion of the radiation element where the radio IC element is disposed not bonded to the dielectric base. | 03-06-2014 |
20140117099 | WIRELESS IC DEVICE COMPONENT AND WIRELESS IC DEVICE - A wireless IC device includes a wireless IC chip, a coupling electrode, and a radiation plate. The coupling electrode includes coupling portions arranged to be coupled to the wireless IC chip and a pair of opposing ends. The pair of opposing ends are capacitively coupled to each other and oppose the radiation plate to be coupled to the radiation plate. The wireless IC chip uses the radiation plate as an antenna to transmit and receive signals having certain frequencies to and from an RFID system. | 05-01-2014 |
20140159984 | ANTENNA AND WIRELESS IC DEVICE - An antenna and a wireless IC device that includes the antenna are provided for which the manufacturing process is simple and for which there is a low probability of a poor connection occurring between a feeder portion and a radiation electrode. An antenna includes a radiation electrode that is provided on a main surface of an insulator board, a ground electrode and/or a counter electrode that is arranged so as to oppose the radiation electrode, and a magnetic field electrode that is connected to the radiation electrode through a connection portion. The magnetic field electrode is defined by line-shaped electrodes and feeds a signal to the radiation electrode from a feeder portion defined by ends of the line-shaped electrodes through the magnetic field electrode. | 06-12-2014 |
20140232532 | INSPECTION METHOD AND INSPECTION DEVICE FOR RFID TAG - An RFID tag inspection method includes the steps of transmitting a measurement signal from a reader/writer simultaneously to a plurality of RFID tags arrayed on a collective base member and configured to process radio signals, receiving response waves from the individual RFID tags in a batch by the reader/writer, and determining, based on strengths and a number of received signals read by the reader/writer, whether or not the individual RFID tags are acceptable. Thus, acceptance/rejection inspection can be performed on the plural RFID tags, which are arrayed on the collective base member, in a batch. | 08-21-2014 |
20140273899 | COMMUNICATION DEVICE - An RFID device provided at a transmission and reception circuit processes an RFID carrier signal belonging to a band of about 902 MHz to about 928 MHz or about 865 MHz to about 868 MHz to execute near field radio communication. An RFIC provided at a transmission and reception circuit processes a GSM carrier signal belonging to a band of about 824 MHz to about 894 MHz or about 880 MHz to about 960 MHz to execute mobile communication. A filter circuit provided at the transmission and reception circuit takes the band of about 850 MHz to about 940 MHz where RFID carrier signals appear as the pass band, and takes the band greater than or equal to about 1.2 GHz where a harmonic wave component of GSM carrier signals appears as the attenuation band. | 09-18-2014 |
20140319224 | WIRELESS IC DEVICE - An electromagnetic coupling module includes a wireless IC chip and a functional substrate. The electromagnetic coupling module is mounted on a radiation plate, preferably using an adhesive, for example. On the upper surface of a base material of the radiation plate, two long radiation electrodes are provided. On the undersurface of the functional substrate, capacitive coupling electrodes that individually face inner ends of the radiation electrodes are provided. A matching circuit arranged to perform the impedance matching between the wireless IC chip and each of the radiation electrodes includes the capacitive coupling electrodes. As a result, it is possible to reduce the size, facilitate the design, and reduce the cost of a wireless IC device. | 10-30-2014 |
20140319230 | ANTENNA MODULE - An antenna module includes an antenna element including coil patterns and via conductors coupling together two adjacent two coil patterns. At least one of the coil patterns has a spiral shape, is wound three or more turns parallel or substantially parallel to an outer edge of a principal surface of a multilayer body, includes a first partial pattern including an outer end portion, a second partial pattern extending parallel or substantially parallel with the first partial pattern and being adjacent to the first partial pattern with a first gap provided therebetween, and a third partial pattern extending parallel or substantially parallel with the second partial pattern and being adjacent to the second partial pattern with a second gap provided therebetween, the second gap being smaller than the first gap. | 10-30-2014 |
20140332594 | RADIO IC DEVICE AND RADIO COMMUNICATION TERMINAL - A radio IC device includes a radio IC element that includes an antenna terminal connected to an antenna element, and a ground terminal connected to a ground conductor provided integrally with the antenna element, and a circuit element that includes an impedance matching circuit connected to the antenna terminal of the radio IC element. The circuit element includes a first inductance element that defines the impedance matching circuit, and a second inductance element that is connected, as a high-frequency cutoff circuit for the radio IC element, to the ground terminal. | 11-13-2014 |
20150060555 | ANTENNA MODULE - An antenna module includes a base including two opposing mounting surfaces, an antenna coil provided on or in the base so as to define an opening, the antenna coil having a shape that is symmetrical or substantially symmetrical with respect to a reference plane, and an IC chip and a plurality of electronic components mounted on one of the mounting surfaces and electrically coupled to the antenna coil, the IC chip and the electronic components being arranged inside the opening when viewed in plan from a normal direction of the mounting surface. At least two of the plurality of electronic components are arranged so as to be symmetrical or substantially symmetrical to each other with respect to the reference plane when viewed in plan from the normal direction. | 03-05-2015 |
20150087243 | HF-BAND WIRELESS COMMUNICATION DEVICE - A HF-band wireless communication device includes a wireless IC configured to process a radio signal, a first substrate including a first inductor pattern coupled to the wireless IC, and a second substrate which includes a coil-shaped second inductor pattern coupled in series to the first inductor pattern. An L value of the first inductor pattern is greater than an L value of the second inductor pattern, and the L value of the first inductor pattern is dominant in a resonant frequency of a resonance circuit including the first and second inductor patterns. A winding diameter of the second inductor pattern is greater than a winding diameter of the first inductor pattern, and the second inductor pattern defines a main radiating element. | 03-26-2015 |
20150087362 | COMMUNICATION TERMINAL DEVICE - A communication terminal device includes a UHF-band RFID system including a wireless IC element for UHF-band RFID and a loop-shaped conductor coupled to the wireless IC element for UHF-band RFID, and a UHF-band mobile communication system including a wireless IC element for UHF-band mobile communication and an antenna conductor coupled to the wireless IC element for UHF-band mobile communication. The loop-shaped conductor and the antenna conductor are closely adjacent to each other. The loop-shaped conductor is electromagnetically coupled to a portion of the antenna conductor. | 03-26-2015 |