Loop Type Patents (Class 343/788)
-
Publication number: 20110012803Abstract: In an antenna coil including a first magnetic core, a second magnetic core, and a flexible board, coil conductors are provided on a surface of the flexible board. By winding the flexible board around the first magnetic core and the second magnetic core, a first coil portion is disposed around the first magnetic core, and a second coil portion is disposed around the second magnetic core. The winding direction of the second coil portion is opposite to that of the first coil portion. The first coil portion and the second coil portion are connected to define one coil as a whole.Type: ApplicationFiled: August 30, 2010Publication date: January 20, 2011Applicant: MURATA MANUFACTURING CO., LTD.Inventors: Kuniaki YOSUI, Hiroyuki KUBO, Hiromitsu ITO
-
Patent number: 7859407Abstract: An electronic article surveillance antenna system with wide interrogation zones has a number of core transceiver antennas with each connectable to a transmitter. The core transceiver antennas are adapted to be installed adjacent a ceiling of the wide interrogation zone and generate an interrogation signal into the wide interrogation zone. The core transceiver antennas each are connectable to a receiver to receive and detect a response signal from an electronic surveillance marker disposed in the wide interrogation zone. The system also has transceiver antenna coils with each connectable to the transmitter and adapted to be installed adjacent a floor of the wide interrogation zone. The transceiver antenna coils generate the interrogation signal into the wide interrogation zone and each is also connectable to the receiver to receive and detect the response signal from the electronic surveillance marker disposed in the wide interrogation zone.Type: GrantFiled: February 21, 2006Date of Patent: December 28, 2010Assignee: Sensormatic Electronics, LLCInventors: Stewart E. Hall, Richard Copeland, William Farrell
-
Publication number: 20100321267Abstract: An antenna device includes a circuit board and an antenna coil that includes a flexible board on which plural coil conductors are formed and a magnetic core inserted into through holes provided in the flexible board. In each of the plural coil conductors, a first conductor portion is adjacent to a first principal surface of the magnetic core and a second conductor portion is adjacent to a second principal surface of the magnetic core and are positioned so as not to overlap each other in a normal direction with respect to the first or second principal surfaces. The second conductor portion is located farther from the center of the circuit board than the first conductor portion.Type: ApplicationFiled: June 21, 2010Publication date: December 23, 2010Applicant: MURATA MANUFACTURING CO., LTD.Inventors: Hiromitsu ITO, Hiroyuki KUBO, Kuniaki YOSUI
-
Publication number: 20100309080Abstract: A complex antenna which receives or transmits a plurality of electromagnetic waves of different frequencies is provided. A first one of the electromagnetic waves is an alternating magnetic flux. The complex antenna includes a first antenna which receives or transmits the alternating magnetic flux. The complex antenna includes a second antenna arranged such that the first antenna and the second antenna overlap as viewed from a direction in which the alternating magnetic flux penetrates the first antenna. The second antenna is adapted for reducing an induction effect of a current which is induced by the alternating magnetic flux and flows in the second antenna.Type: ApplicationFiled: February 23, 2010Publication date: December 9, 2010Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Takashi MINEMURA, Kouji Hayashi, Hiroshi Shimasaki
-
Publication number: 20100309081Abstract: A spiral coil conductor defining its winding central section as a conductor opening section is formed on a flexible substrate. The flexible substrate has a U shaped bend along a line passing through the conductor opening section so as to envelop a magnetic material core. The magnetic material core is arranged in a state where its end face faces the bend of the flexible substrate, and the magnetic material core includes cut shapes provided at a portion of the end face. The portion at the end face faces coil conductor sections at the bend of the flexible substrate, and the cut shapes separate the portion apart from the coil conductor sections.Type: ApplicationFiled: June 15, 2010Publication date: December 9, 2010Applicant: MURATA MANUFACTURING CO., LTD.Inventors: Eiichi KOBAYASHI, Takuma SAWAYA, Hiroyuki KUBO
-
Publication number: 20100302039Abstract: A communication device includes a conductor plane, a first loop antenna disposed on one surface of the conductor plane via a first magnetic sheet, a second loop antenna being in a loop direction opposite to a loop direction of the first loop antenna and having an opening structure approximately identical in shape to the first loop antenna, the second loop antenna being disposed on another surface of the conductor plane via a second magnetic sheet so as to be roughly superposed on the first loop antenna, and a communication circuit processing a communication signal transmitted and received by the first and second loop antennas.Type: ApplicationFiled: May 11, 2010Publication date: December 2, 2010Applicant: SONY CORPORATIONInventors: Tetsuro Goto, Kenichi Kabasawa, Masaya Takano, Kazuya Hirano
-
Publication number: 20100289715Abstract: Metamaterial particles having active electronic components are disclosed. According to one aspect, a metamaterial particle in accordance with the subject matter disclosed herein can include a field sensing element adapted to sense a first field and adapted to produce a sensed field signal representative of the first field in response to sensing the first field. Further, the metamaterial particle can include an active electronic component adapted to receive the sensed field signal and adapted to produce a drive signal based on the sensed field signal. A field generating element can be adapted to receive the drive signal and adapted to produce a second field based on the drive signal.Type: ApplicationFiled: January 24, 2008Publication date: November 18, 2010Inventors: Steven A. Cummer, Bogdan-Ioan Popa
-
Publication number: 20100283698Abstract: A method for reducing a resistance of an antenna circuit capable of obtaining a desired property by reducing wiring resistance to a suitable value while ensuring inductance is provided. An antenna circuit is disposed to a transponder having a carrier frequency band of 13.56 MHz. The antenna circuit is formed of a prescribed base material and two antenna conductors each of which is formed of the same conductor pattern forming an antenna coil, formed on respective front and back surfaces of the base material by electrically parallel connection. Each of the two antenna conductors has a thickness of greater than equal to 5% and less than 50% of an overall thickness formed of the two antenna conductors and the base material.Type: ApplicationFiled: October 15, 2008Publication date: November 11, 2010Applicant: SONY CHEMICAL & INFORMATION DEVICE CORPORATIONInventor: Katsuhisa Orihara
-
Patent number: 7830324Abstract: An electronic entity includes an electronic circuit (21) having at least one first terminal (22) and a second terminal (24) to which an antenna is connected. The antenna includes a conducting element (26) electrically connected to the first terminal (22) of the electronic circuit (21) and includes a resonator (28) insulated from the conducting element (26) at the antenna, electrically connected to the second terminal (24) of the electronic circuit (21) and coupled to the conducting element (26).Type: GrantFiled: June 20, 2006Date of Patent: November 9, 2010Assignee: Oberthur TechnologiesInventor: Yves Eray
-
Publication number: 20100277386Abstract: An improved magnetically coupling near-field RFID antenna is embodied as a magnetic H-field coupler, and the near-field RFID antenna is embodied as a looped and/or frame-shaped antenna. The looped and/or frame-shaped antenna comprises a looped or frame-shaped strip conductor. The strip conductor is arranged set apart from a ground surface parallel thereto. A dielectric is interposed. The start and the end of the strip conductor end close to each other forms, a gap or spacing. The start of the strip conductor is fed to ground. The end of the strip conductor is terminated by a terminating resistor. The terminating resistor is connected between the end of the strip conductor and a ground surfaces.Type: ApplicationFiled: May 1, 2009Publication date: November 4, 2010Applicant: Kathrein-Werke KGInventors: Stoyan ILIEV, Thomas Lankes, Gerald Schillmeier
-
Publication number: 20100277387Abstract: A space efficient magnetic antenna is disclosed for use in tracking, positioning and other applications. In a preferred embodiment, a space efficient magnetic antenna system comprises a first magnetic antenna with a first null axis aligned within a predetermined plane and a second magnetic antenna having a second null axis aligned substantially orthogonal to a first null axis. A second magnetic antenna system lies in a minimal coupling orientation with respect to a first magnetic antenna system. Additionally, a first magnetic antenna may further comprise a plurality of interconnected magnetic antenna elements. A space efficient magnetic antenna system may include an RF module. In further embodiments, the antenna system may enclose a substantial majority of the device including the RF module; the RF module may be enclosed substantially or wholly within one or more antennas of the antenna system.Type: ApplicationFiled: July 12, 2010Publication date: November 4, 2010Applicant: Q-Track CorporationInventors: Hans Gregory Schantz, Robert E. DePierre, James David Fluhler, Kazimierz Siwiak, Glenn Wolenec, Jerome Sylvester Gabig, James Matthew Barron
-
Patent number: 7825802Abstract: An identification system which may be employed in a transport or monitoring system has at least one stationary and at least one mobile transmission unit which are each provided with an antenna, which antennas in turn are coupled inductively or capacitively to each other during the transmission of data. At least one of the antennas is designed such that in response to a mutual displacement of the coupled antennas a direction-dependent modulation of the transmitted signals occurs which is demodulated and evaluated in at least one of the transmission units, for example, by a demodulation unit and a processor, optionally a signal processor, in order to obtain information relating to the relative motion of the two transmission units. In addition to known identification functions, the identification system may perform additional important functions without requiring any significant additional expense.Type: GrantFiled: March 7, 2006Date of Patent: November 2, 2010Assignee: Schweizerische Bundesbahnen SBBInventors: Stefan Baiker, Martin Ruhl
-
Patent number: 7825869Abstract: Systems and methods are disclosed for miniature transponders having capsule enclosure housings including a magnetic antenna core, such as a ferrite core, with a shaped form to provide space for an integrated circuit also included within the capsule enclosure housing. In addition, metal wire windings surround the antenna core, and these wires can be direct bonded to connections on the integrated circuit. Further, a stabilizing epoxy or other material can be inserted within the capsule enclosure housing to secure the antenna core and the integrated circuit within the capsule enclosure housing.Type: GrantFiled: June 23, 2008Date of Patent: November 2, 2010Inventors: Joseph V. Masin, Barbara P. Masin
-
Patent number: 7818874Abstract: An antenna core comprises a flexible stack of a plurality of oblong soft-magnetic strips consisting of an amorphous or nanocrystalline alloy. The strips of said antenna core are separated from one another by an electrically insulating film each. The amorphous or nanocrystalline alloy has a magnetostriction value lambdas in the range of +4<.>10<?6> to ?4<.>10<?6> and a linear BH loop. The coefficient of induction L of the antenna core changes at 60 kHz at a center distortion by 25% of its length by less than 10% and the quality Q of the antenna core is >=10 at 60 kHz.Type: GrantFiled: July 8, 2009Date of Patent: October 26, 2010Assignee: Vacuumschmelze GmbH & Co. KGInventors: Giselher Herzer, Franz Till, Harald Hundt
-
Publication number: 20100258639Abstract: Removable card for a contactless communication contains an antenna (4) formed of threads (10) placed on the external surface of the body (1) of the card and covered by a layer (7) of a ferromagnetic material. In advantageous adjustment the antenna (4) contains on one area (2) of the card eight threads (10) and both areas (2) of the card are covered by a layer (7) of a ferritic foil. The antenna (4) is connected to the series with element (12) with capacity and the resistance (11) on the other side. Resonant circuit is tuned in for the final frequency from 13.0 to 15.0 MHz. The signal from the antenna (4) is read between the first and the second thread (10) from the side of the element (12) with capacity.Type: ApplicationFiled: August 10, 2009Publication date: October 14, 2010Applicant: Logomotion, S.R.O.Inventors: Miroslav Florek, Michal Masaryk
-
Patent number: 7812777Abstract: In an antenna coil including a first magnetic core, a second magnetic core, and a flexible board, coil conductors are provided on a surface of the flexible board. By winding the flexible board around the first magnetic core and the second magnetic core, a first coil portion is disposed around the first magnetic core and a second coil portion is disposed around the second magnetic core. The winding direction of the second coil portion is opposite to that of the first coil portion. The first coil portion and the second coil portion are connected to define one coil as a whole.Type: GrantFiled: August 23, 2007Date of Patent: October 12, 2010Assignee: Murata Manufacturing Co., Ltd.Inventors: Kuniaki Yosui, Hiroyuki Kubo, Hiromitsu Ito
-
Publication number: 20100230501Abstract: Without using a component such as a chip coil, a winding pattern is formed with a wire with which a main wiring pattern is formed. This enables to deal with the flexibility by realizing a thin product using a coil antenna. Further, the wiring pattern is designed such that the winding pattern is provided and distributed to the main wiring pattern forming a loop, and is formed with the wire so as to have a wound shape small enough compared with the main wiring pattern. In this way, the ratio of the self-inductance to the mutual inductance is appropriately made further large, so that the mutual inductance is made comparatively small.Type: ApplicationFiled: November 18, 2008Publication date: September 16, 2010Applicant: NHK Spring Co., Ltd.Inventors: Kiyotaka Fukushima, Kenji Yamamotoya, Masayuki Miura, Kenichiro Tami
-
Patent number: 7796091Abstract: To attain sensitivity not deviating in any of XYZ directions. A three-axis antenna with a cross-shaped core 2 having a pair of X-axis arms 22a, 22b projecting in the X-axis direction in an orthogonal coordinate system and a pair of Y-axis arms 23a, 23b projecting in the Y-axis direction orthogonal to aforementioned X-axis direction, and having Z-axis winding wire 26 provided in a substantially rectangular frame shape outside the head sections of aforementioned X-axis arms 22a, 22b and the head sections of aforementioned Y-axis arms 23a, 23b. Aforementioned Z-axis winding wire is housed in a case having a bottom so as to cover the entire head surfaces of X-axis arms 22a, 23b and head surfaces of Y-axis arms 23a, 23b in aforementioned cross-shaped core 2.Type: GrantFiled: August 27, 2009Date of Patent: September 14, 2010Assignee: Sumida CorporationInventor: Hozumi Ueda
-
METHODS AND SYSTEMS FOR TRANSMITTING AND RECEIVING DATA FROM POINTS ALONG VOLTAGE TRANSMISSION LINES
Publication number: 20100219807Abstract: A method of receiving signals transmitted through a voltage carrying power line using an antenna module including the steps of: positioning a housing of the antenna module proximate to the voltage carrying power line such that an antenna being supported in the housing is oriented at an angle with respect to the voltage carrying power line, and receiving a signal via the antenna from the voltage carrying power line.Type: ApplicationFiled: February 27, 2009Publication date: September 2, 2010Inventors: David DeLeo, Franklin Miller -
Publication number: 20100220025Abstract: The inventive antenna comprises a planar substrate carrying as first winding whose axis is arranged in a parallel position to the plane of the substrate. Said antenna also comprises at least one second winding, whose axis is arranged in a parallel position to the plane of the substrate and which is wound-up about a thin layer made of high magnetically permeable material and arranged in a parallel position with respect to the plane of the substrate. A third winding, whose axis is perpendicular to the first and second windings and which is wound-up about an additional thin layer can be provided. Said additional thin layer is arranged in a parallel position to the plane of the substrate and is made of high magnetically permeable material.Type: ApplicationFiled: September 22, 2006Publication date: September 2, 2010Applicant: Commissariat A L'Energie AtomiqueInventor: Olivier Savry
-
Patent number: 7787922Abstract: To provide a cell phone equipped with a broadcast receiver that delivers a high receiving sensitivity and antenna performance in various usage states. A loop element 12 as an antenna for receiving television broadcast is arranged in a range (c) of an upper end portion of an upper housing 1. An end part of an upper circuit board 6 is matched with a portion shown by (a) so that a conductor other than the antenna element does not exist in the range (c). A monopole element 19 for cell phone communication is arranged at a lower end portion of a lower housing 2.Type: GrantFiled: October 28, 2005Date of Patent: August 31, 2010Assignee: Panasonic CorporationInventors: Yukari Yamazaki, Masashi Koshi, Haruhiko Kakitsu, Atsuhiko Hashigaya, Hiroyuki Sasaki, Yutaka Saito, Kenya Nagano
-
Publication number: 20100214187Abstract: The present invention provides an antenna apparatus (60) for use in a non-contact type IC card into and from which data can be written and read by an electronic apparatus having a communication function, by virtue of inductive coupling. The antenna apparatus includes a loop coil (61) and a magnetic member (62). The loop coil (61) is produced by winding a conductive wire in a plane and configured to perform the inductive coupling with the electronic apparatus. The magnetic member (62) covers one region (61a) of the loop coil, provided at one side, from one surface of the loop coil, passes through the loop coil, and covers the other region (61b) of the loop coil, provided at the other side, from the other surface of the loop coil.Type: ApplicationFiled: June 13, 2006Publication date: August 26, 2010Inventors: Satoru Sugita, Keisuke Aramaki, Hiraku Akiho
-
Patent number: 7782267Abstract: A flexible substrate is wound around a magnetic core to define an antenna coil. A receiver coil including a first receiver coil portion and a second receiver coil portion which have opposite winding directions, and a transmitter coil including a first transmitter coil portion and a second transmitter coil portion which have opposite winding directions are provided on the flexible substrate. A region in which the receiver coil is provided and a region in which the transmitter coil is provided at least partially overlap each other when viewed in plan view, and non-coil-wound portions are provided between the first coil portions and second coil portions in the coils.Type: GrantFiled: April 3, 2009Date of Patent: August 24, 2010Assignee: Murata Manufacturing Co., Ltd.Inventors: Hiroyuki Kubo, Hiromitsu Ito, Kuniaki Yosui, Kiyoyasu Sakurada, Masanori Kasai
-
Patent number: 7777680Abstract: In an antenna device of a wristwatch, a pair of external magnetic members each attached to a respective one of both ends of a magnetic core effectively collects the magnetic flux of a standard time and frequency signal. The collected magnetic flux passes through the core around which a coil is wound, thereby inducing an electromotive force and hence improving the reception accuracy of the signal. The pair of external magnetic members screens out undesirable external magnetism which would otherwise influence motors that drive a hand shaft and hands, thereby achieving accurate hand driving and improving the high watch accuracy.Type: GrantFiled: September 26, 2007Date of Patent: August 17, 2010Assignee: Casio Computer Co., Ltd.Inventors: Kazuaki Abe, Kaoru Someya, Soh Kimura
-
Publication number: 20100188307Abstract: A radio-wave receiver is provided with a hollow-cylindrical case, a plate-like module member accommodated within the cylindrical case, a transparent member closing one opening end of the cylindrical case, a cover closing the other opening end of the cylindrical case, and an antenna structure disposed on the side position of the plate-like module member. The antenna structure is provided with a core including a plurality of plate-like magnetic members layered on each other in a direction perpendicular to the thickness direction of the plate-like module member, a coil wound around a central straight part of the core, and bent end portions extending from both ends of the core and bent to conform to the inner periphery of the cylindrical case.Type: ApplicationFiled: January 21, 2010Publication date: July 29, 2010Applicant: Casio Computer Co., Ltd.Inventors: Yoshiyuki MURATA, Hideo TASAKA, Takashi SANO
-
Patent number: 7755558Abstract: The size of an antenna coil is reduced, and it is possible to prevent a lowering of the reception sensitivity due to a difference of the arrangement position of the antenna coil. On a winding frame of a ferrite core, a first coil and a second coil are wound in such a manner that their winding axes orthogonally intersect each other. A third coil is wound around an outer circumference of the first coil and the second coil in such a manner that the third coil's winding axis orthogonally intersects the winding axes of the first coil and the second coil.Type: GrantFiled: April 18, 2007Date of Patent: July 13, 2010Assignee: Denso CorporationInventors: Hozumi Ueda, Tatsumi Nishino, Takahide Kitahara
-
Publication number: 20100164822Abstract: The present invention is to provide a coil for an antenna with small inductance fluctuation and high productivity. According to the invention, an antenna coil 1 includes: a bar-shaped core 10, a bobbin 20 which is structured as to at least cover the most deflectable face of the bar-shaped core 10, a coil 30 which is wound around the surface of the bobbin 20, and a resin molded body 3 which covers the bobbin 20 around which the coil 30 is wound.Type: ApplicationFiled: November 9, 2006Publication date: July 1, 2010Applicant: SUMIDA CORPORATIONInventors: Noriaki Iwasaki, Hozumi Ueda
-
Publication number: 20100164823Abstract: A portable electronic device includes a circuit board and an antenna coil installed on the circuit board. The antenna coil includes a magnetic core and a coil wound at either side of an unwound portion. The winding direction of the coil is changed at either side of the unwound portion. When the length of the magnetic core is defined as X and the distance between two intersecting points at which a virtual line formed by projecting the central line of the magnetic core onto the circuit board intersects the outer periphery of the circuit board is defined as Y, the antenna coil satisfies Y?X?0.8Y.Type: ApplicationFiled: March 12, 2010Publication date: July 1, 2010Applicant: MURATA MANUFACTURING CO., LTD.Inventors: Hiroyuki Kubo, Hiromitsu Ito, Kuniaki Yosui, Eiichi Kobayashi
-
Publication number: 20100156734Abstract: A chip-type antenna for receiving FM broadcasting signal includes a ceramic substrate, a ferrite layer formed on a top surface of the ceramic substrate, and a radiation structure. The ceramic substrate and the ferrite layer form an antenna substrate. The radiation structure is formed on the antenna substrate. The chip-type antenna for receiving FM broadcasting signal utilizes the high dielectric constant of the ceramic substrate and the electric characteristic of the ferrite layer to reduce the dimension of the antenna.Type: ApplicationFiled: December 19, 2008Publication date: June 24, 2010Inventors: Chih-Ming Chen, Chih-Wei Chen, Chih-Hao Lai, Ming-Yi Wu, Tzu-Feng Lee
-
Publication number: 20100156729Abstract: There is provided a magnetic antenna and an antenna device that increase the packaging density of a portion where the magnetic antenna is mounted in an electronic apparatus, and suppresses degradation of antenna performance. A flexible substrate has first and second substantially spiral-shaped coil conductors formed thereon. Conductor-opening-side through holes are formed in the respective conductor openings of the coil conductors, and non-coil-conductor-forming-area through holes are formed in areas in which the coil conductors are not formed. First and second magnetic cores are arranged so as to extend through the respective conductor-opening-side through holes from a first main surface of the flexible substrate and to extend through the respective non-coil-conductor-forming-area through holes in a direction from a second main surface side to the first main surface of the flexible substrate.Type: ApplicationFiled: December 23, 2009Publication date: June 24, 2010Applicant: MURATA MANUFACTURING CO., LTD.Inventors: Hiroyuki KUBO, Hiromitsu ITO, Kuniaki YOSUI
-
Publication number: 20100156735Abstract: An antenna unit includes an antenna formed on a magnetic sheet. A transmission circuit includes an inductor, a matching capacitor, and the antenna connected in series, and a reception circuit includes the antenna, the matching capacitor, a resistor, and a capacitor connected in series. The antenna is formed as one turn, and the size of the antenna and the resistor involves a predetermined relationship.Type: ApplicationFiled: December 16, 2009Publication date: June 24, 2010Applicant: PANASONIC CORPORATIONInventors: Kouichi NAKAMURA, Takumi NARUSE, Fumio FUKUSHIMA, Kuniaki KIYOSUE
-
Patent number: 7742008Abstract: A multipole antenna for conducting logging-while-drilling (LWD), includes a wire for one of producing and receiving an electromagnetic field, the wire having at least one winding for providing a magnetic moment in a first portion of the antenna that is opposite to the magnetic moment of a second portion of the antenna. A method for constructing the multipole antenna is provided. A LWD tool making use of the antenna is also provided.Type: GrantFiled: October 24, 2007Date of Patent: June 22, 2010Assignee: Baker Hughes IncorporatedInventors: Tsili Wang, Jack Signorelli
-
Patent number: 7737905Abstract: A ferrite-loaded broadband loop antenna having nearly comparable transmit/receive characteristics is disclosed. The antenna contains a low loss ferrite core having a width-to-height ratio of approximately 24 and a depth-to-height ratio of approximately 6, and an antenna feed plate assembly centered about the long axis of the ferrite core, having a width-to-height ratio of approximately 6 and a width-to-depth ratio of approximately 1, and a balanced feed located at the center of the antenna feed plate assembly, positioned on the radiating side of the antenna, and a low loss center element in the ferrite core, the center element having at least one of a loss tangent and a permeability that is lower than the ferrite core, and a grounding surface coupled to the antenna feed plates.Type: GrantFiled: August 28, 2008Date of Patent: June 15, 2010Assignee: The United States of America as represented by the Secretary of the NavyInventors: John Harold Meloling, David Carlos Dawson, Peder Meyer Hansen
-
Patent number: 7733283Abstract: An antenna device includes: a winding component having an approximately cylindrical shaped winding shaft portion and a flange portion disposed to project outside the winding shaft portion in at least one end portion of both end portions in an axial direction of the winding shaft portion; a pair of binding terminals disposed to project outside the flange portion in at least one of the flange portions; and a winding both ends of which are bound to the pair of binding terminals. The flange portion on which the binding terminals are disposed has an approximate disk shape. At least one binding terminal is disposed to be oriented along a direction approximately perpendicular to an outer periphery of the flange portion on which the binding terminal is disposed.Type: GrantFiled: October 16, 2007Date of Patent: June 8, 2010Assignee: Sumida CorporationInventors: Tsuyoshi Sato, Yasunori Morimoto
-
Patent number: 7729660Abstract: A communication device able to share one antenna and in addition able to sufficiently exhibit characteristics of a function as a reader, writer and a card function, a non-contact type IC card provided with that, and an information apparatus, wherein the device has a first transmission circuit 220 having first and second output terminals and outputting a carrier from the first and second output terminals in a first mode; an antenna circuit 210 including a node ND210, an inductor 211 having one end connected to the node, and having the other end connected to the second output terminal of the first transmission circuit, and a capacitor 212 connected between the node and the first output terminal of the first transmission circuit; a second transmission circuit 230 connected to the node of the antenna circuit and outputting the transmission data in a second mode; at least one reception circuit 240 connected to the node of the antenna circuit and performing reception processing with respect to data received at theType: GrantFiled: April 14, 2006Date of Patent: June 1, 2010Assignee: Sony CorporationInventors: Satoru Kondo, Kenichi Kamiyama, Yukio Tanaka
-
Patent number: 7724199Abstract: An antenna device includes an antenna for receiving a time information radio wave, and an antenna support member. In the antenna, a coil is wound around a center portion of a core. In the support member, a non-magnetic portion supports two magnetic portions independently and both end portions of the core of the antenna are magnetically coupled with the magnetic portions. A radio wave controlled timepiece includes a case in an inner space of which the antenna and the support member are installed as described above. In the inner space, a time counting unit, a time display unit connected to the time counting unit, and a time updating unit configured to update the time displayed on the display unit, based on the time information radio wave received by the antenna, are installed.Type: GrantFiled: February 23, 2009Date of Patent: May 25, 2010Assignee: Casio Computer Co., Ltd.Inventors: Kaoru Someya, Kazuaki Abe
-
Patent number: 7712672Abstract: An antenna module and a portable communication terminal equipped with the antenna module are provided. The antenna module has a space-saving design, and also has both a capability for long communication distance for a tag function and a capability for wide communication range for a reader/writer function. A first antenna coil (11) for communication with a reader/writer and a second antenna coil (12) for communication with an IC tag are disposed on a base substrate (10). The first antenna coil (11) is disposed in an outermost periphery section of the base substrate (10) so that a communication distance is attained. The second antenna coil (12) is disposed within an inner periphery of the first antenna coil (11) so as to achieve overall size reduction of the module.Type: GrantFiled: June 4, 2004Date of Patent: May 11, 2010Assignee: Sony CorporationInventors: Isao Takahashi, Hiraku Akiho
-
Patent number: 7710341Abstract: A portable electronic device includes a circuit board and an antenna coil installed on the circuit board. The antenna coil includes a magnetic core and a coil wound at either side of an unwound portion. The winding direction of the coil is changed at either side of the unwound portion. When the length of the magnetic core is defined as X and the distance between two intersecting points at which a virtual line formed by projecting the central line of the magnetic core onto the circuit board intersects the outer periphery of the circuit board is defined as Y, the antenna coil satisfies Y?X?0.8Y.Type: GrantFiled: June 27, 2007Date of Patent: May 4, 2010Assignee: Murata Manufacturing Co., Ltd.Inventors: Hiroyuki Kubo, Hiromitsu Ito, Kuniaki Yosui, Eiichi Kobayashi
-
Patent number: 7710274Abstract: An antenna and a radio frequency identification (RFID) tag using the same are disclosed. The antenna includes: a radiating unit having a helical structure; and a feeding unit having a loop structure on which a terminal connected to an element connected to the antenna is formed, wherein the feeding unit is electromagnetically induced and coupled with the radiating unit to be apart from each other.Type: GrantFiled: June 29, 2007Date of Patent: May 4, 2010Assignees: Electronics and Telecommunications Research Institute, Korea Advanced Institute of Science and TechnologyInventors: Won-Kyu Choi, Hae-Won Son, Gil-Young Choi, Jung-Hyung Ha, Noh-Hoon Myung
-
Publication number: 20100097895Abstract: A radio-controlled timepiece in which its reception sensitivity is further enhanced. The radio-controlled timepiece includes: an antenna core 11 made of a magnetic material and formed as a single integrated body including a coiled portion (11a) wound with a coil 19 and extension portions 11b and 11c which are located respectively on the end-portion sides; additional cores 15 and 16 made of a magnetic material; magnetism-collection members 17 and 18 made of a magnetic material; a main plate 31 (timepiece substrate) made of a non-magnetic material; a guide member 33 made of a non-magnetic material; and a liquid-crystal-panel supporting frame 32 (magnetism-collection-member supporting members, pressing member) made of a non-magnetic material and having protrusions 32a and 32b (pressing members) formed thereon. When the main plate 31, the guide member 33, and the liquid-crystal-panel supporting frame 32 are assembled together, the protrusions 32a and 32b press the magnetism-collection members, respectively.Type: ApplicationFiled: March 5, 2008Publication date: April 22, 2010Inventors: Tatsuo Sumida, Kazuo Sakamoto, Tadashi Yasuoka
-
Patent number: 7699231Abstract: A non-contact reader/writer for an IC card includes an antenna substrate provided with a loop antenna and a capacitor on its upper surface, a control substrate provided with a transmitting/receiving circuit and a chip coil on its upper surface, and a magnetic sheet disposed between the antenna substrate and the control substrate. A magnetic flux generated by the chip coil on the control substrate passes through the loop antenna to cause magnetic coupling, so that the loop antenna and the transmitting/receiving circuit need not be connected to each other through a communication cable.Type: GrantFiled: June 30, 2004Date of Patent: April 20, 2010Assignee: Murata Manufacturing Co., Ltd.Inventor: Koichi Yamaguchi
-
Patent number: 7685752Abstract: The carrier comprises a male part (1) and a female part (2), wherein the male part (1) has a stud (3) able to cooperate with a cavity (4) of the female part (2), wherein the stud (3) contains a ferrite rod (5) on his central axis (7). Said female part (2) comprises said antenna coil (6) so that when the stud (3) fully cooperates with the cavity (4) of the female part (2) through positioning means (9,10), the ferrite rod (5) is placed in the center (8) of the antenna coil (6).Type: GrantFiled: December 1, 2006Date of Patent: March 30, 2010Assignee: Assa Abloy ABInventors: Jean-Miguel Robadey, André Meilland
-
Patent number: 7688270Abstract: An NFC antenna (“NFC” stands for “near field communication”) includes a ferrite antenna including a primary antenna coil wound on a ferrite core of the ferrite antenna; a loop coil provided in a position where components of a magnetic flux on a non-communication direction side interlink, the magnetic flux being generated by the ferrite antenna; and a loop coil switching unit for switching between a mode for forming a loop of the loop coil and a mode for disconnecting the loop.Type: GrantFiled: February 25, 2008Date of Patent: March 30, 2010Assignee: Sony Ericsson Mobile Communications Japan, Inc.Inventor: Takaaki Tsushima
-
Publication number: 20100066626Abstract: To attain sensitivity not deviating in any of XYZ directions. A three-axis antenna with a cross-shaped core 2 having a pair of X-axis arms 22a, 22b projecting in the X-axis direction in an orthogonal coordinate system and a pair of Y-axis arms 23a, 23b projecting in the Y-axis direction orthogonal to aforementioned X-axis direction, and having Z-axis winding wire 26 provided in a substantially rectangular frame shape outside the head sections of aforementioned X-axis arms 22a, 22b and the head sections of aforementioned Y-axis arms 23a, 23b. Aforementioned Z-axis winding wire is housed in a case having a bottom so as to cover the entire head surfaces of X-axis arms 22a, 23b and head surfaces of Y-axis arms 23a, 23b in aforementioned cross-shaped core 2.Type: ApplicationFiled: August 27, 2009Publication date: March 18, 2010Applicant: Sumida CorporationInventor: Hozumi Ueda
-
Patent number: 7679570Abstract: The invention provides a transmission and/or reception device for mounting on a wheel of a vehicle and a housing for such a device. The device includes a tire information device configured to provide information relating to a tire. A transmitter/receiver is electrically connected to the tire information device. An antenna is electrically connected to the transmitter/receiver for transmitting and/or receiving radio frequency signals. A housing is configured to house the tire information device and the transmitter/receiver. The antenna is formed by winding a cable on an outside face of the housing.Type: GrantFiled: February 17, 2005Date of Patent: March 16, 2010Assignees: Michelin Recherche et Technique S.A., TRW Automotive U.S., LLCInventors: Frédéric Leymin, Michael A. Hart
-
Publication number: 20100060540Abstract: A radio wave receiver comprising an antenna structure placed within a case. The antenna structure has a rod-like core around which a coil is wound. A pair of opposite external magnetic members are each provided in a respective one of a pair of cavities provided so as to extend along the inner periphery of the case from adjacent the respective ends of the rod-like core toward the end points of an inner diameter of the case parallel to the axis of the rod-like core. The pair of external magnetic members is substantially the same permeability as the core. Thus, the antenna core is magnetically coupled to the pair of external magnetic members.Type: ApplicationFiled: August 20, 2009Publication date: March 11, 2010Applicant: Casio Computer Co., Ltd.Inventor: Kazuaki ABE
-
Publication number: 20100062709Abstract: Stable receiving action is achieved with a receiver of simpler configuration. When a human hand is held over the panel unit 201, the electric field in the vicinity of the human body is coupled to the sensor electrode 2122 of the coil sensor 212 from the receiving electrode 211 of the panel unit 201, and alternate current is generated at the sensor electrode 2122. This alternate current then induces a magnetic flux inside the central opening of the coil 2121 in proportion to the strength of the electric field in the vicinity of the human body. Depending on the changes in this magnetic flux, electric current passes through the coil 2121. The electric current passing through the coil 2121 is converted by the electric current detecting circuit 2124 of the coil sensor 212 to voltage signals and transmitted as received signals to the demodulator 22.Type: ApplicationFiled: January 25, 2006Publication date: March 11, 2010Applicant: Kaiser Technology, Inc.Inventor: Yasuo Kato
-
Publication number: 20100052996Abstract: A storage medium with built-in antenna includes circuit board on which semiconductor element is placed, first and second magnetic layers sandwiching semiconductor element and circuit board, and first and second antenna coils disposed on first and second magnetic layers. First and second antenna coils are connected in parallel on a flexible sheet. First and second antenna coils are folded at the sides of first and second magnetic layers, respectively, and electrically connected to semiconductor element.Type: ApplicationFiled: July 10, 2006Publication date: March 4, 2010Inventors: Shozo Ochi, Norihito Tsukahara, Kazuhiro Ikurumi
-
Patent number: 7659858Abstract: An electronic device which includes a radio wave impermeably cylindrical case, a radio wave permeable cover covering an opening in one end of the case, a radio wave impermeable cover covering an opening in the other end of the case, and a circuit board and an antenna, both arranged between the two covers in the inner space. The antenna is connected to the board and includes an elongated core and a coil wound around an intermediate portion of the core. Magnetic flux introducing portions are provided on both end portions of the core, a radio wave permeable partition plate is arranged between the permeable cover and the antenna in the inner space, and a pair of flat and magnetic members are arranged between the partition plate and the antenna in the inner space and are magnetically connected to the flux introducing portions.Type: GrantFiled: September 6, 2007Date of Patent: February 9, 2010Assignee: Casio Computer Co., Ltd.Inventors: Kazuaki Abe, Kaoru Someya
-
Patent number: 7642983Abstract: An automatic tuning procedure can be used to allow a small, high efficiency ferrite antenna assembly to be used in various FM frequency based devices. The ferrite antenna can take the form of a rod or flat disk, for example, which can use a pick-up coil and tuning coil to provide sufficient signal strength using a small FM antenna. A balanced amplifier can be used to provide differential input in order to further reduce noise. A microcontroller can determine the strength of the FM signal at various frequencies and can automatically tune the operating frequency to optimize system performance.Type: GrantFiled: January 26, 2007Date of Patent: January 5, 2010Assignee: PowerQ Technologies, Inc.Inventor: Steven Jay Davis