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公开(公告)号：US11876305B2
公开(公告)日：2024-01-16
申请号：US17683404
申请日：2022-03-01
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Hiromitsu Ito , Masamichi Tamura , Tsuyoshi Mukai , Masayoshi Yamamoto
CPC classification number: H01Q7/00 , H01Q1/24 , H04B5/0037
Abstract: An electronic apparatus includes a rectangular or substantially rectangular plate-shaped housing including a first side and a second side which are long sides and a third side and a fourth side which are short sides, and an antenna device. The antenna device includes a first coil including a first coil conductor and a second coil including a second coil conductor. A portion of the first coil overlaps with the second coil opening, a portion of the second coil overlaps with the first coil opening, a straight line connecting a center of gravity of the first coil opening and a center of gravity of the second coil opening intersects with the third side and the fourth side, and the center of gravity of the second coil opening is closer to the third side than the center of gravity of the first coil opening.
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公开(公告)号：US10483623B2
公开(公告)日：2019-11-19
申请号：US15824689
申请日：2017-11-28
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Hiromitsu Ito
Abstract: An antenna device includes an antenna coil, a magnetic sheet, and a metallic member. The antenna coil is formed on a flexible base. The antenna coil is wound into a loop or a spiral in which a winding central portion is a coil opening portion. The magnetic sheet is disposed at a back surface of the flexible base. A square opening is formed in the metallic member. The antenna coil is exposed from the opening of the metallic member. A first side of the antenna coil is hidden by the metallic member and part of the coil opening portion and a second side are exposed from the opening, so that a magnetic flux links with the second side.
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公开(公告)号：US09941576B2
公开(公告)日：2018-04-10
申请号：US15268680
申请日：2016-09-19
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Hiromitsu Ito , Masahiro Ozawa
IPC: H01Q1/24 , H02J50/12 , H02J50/40 , H02J50/70 , H01Q7/06 , H04B5/00 , H01Q1/38 , H01Q21/28 , G06K7/10 , H02J7/02 , H05K1/16 , H02J50/10 , H01Q1/36
CPC classification number: H01Q1/243 , G06K7/10168 , H01Q1/36 , H01Q1/38 , H01Q7/06 , H01Q21/28 , H02J7/025 , H02J50/10 , H02J50/12 , H02J50/40 , H02J50/70 , H04B5/0031 , H04B5/0037 , H04B5/0081 , H05K1/165
Abstract: An antenna device includes a power supply coil to which a near field communication circuit is connected, a near field communication coil that is coupled to an antenna coil of a communication target and the power supply coil via a magnetic field and that resonates at the frequency of a near field communication signal, and a non-contact charging coil that is connected to a non-contact charging control circuit and that is coupled to a target coil for non-contact charging. The power supply coil and the non-contact charging coil are provided on the same plane or on planes that are close to each other. The non-contact charging coil is superposed with the near field communication coil when viewed in plan view, and the shortest distance between the power supply coil and the NFC coil is smaller than the shortest distance between the power supply coil and the non-contact charging coil.
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公开(公告)号：US09306284B2
公开(公告)日：2016-04-05
申请号：US14318575
申请日：2014-06-27
Applicant: MURATA MANUFACTURING CO., LTD.
Inventor： Kuniaki Yosui , Hiroyuki Kubo , Hiromitsu Ito
CPC classification number: H01Q7/06 , H01Q1/2225 , H01Q1/38 , H01Q7/08
Abstract: An antenna includes antenna coil having a magnetic-material core and a coil conductor. The antenna coil is arranged toward a side of a planar conductor, such as a circuit board. Of the coil conductor, a first conductor part close to a first main face of the magnetic-material core and a second conductor part close to a second main face of the magnetic-material core are provided such that the first conductor part is not over the second conductor part in view from a line in a direction normal to the first main face or the second main face of the magnetic-material core. In addition, a coil axis of the coil conductor is orthogonal to the side of the planar conductor.
Abstract translation: 天线包括具有磁性材料芯和线圈导体的天线线圈。 天线线圈朝向诸如电路板的平面导体的一侧布置。 在线圈导体中，设置靠近磁性材料芯的第一主面的第一导体部分和靠近磁性材料芯的第二主面的第二导体部分，使得第一导体部分不在 第二导体部分从垂直于磁性材料芯的第一主面或第二主面的方向上的线看。 此外，线圈导体的线圈轴线与平面导体的一侧正交。
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公开(公告)号：US09048526B2
公开(公告)日：2015-06-02
申请号：US13751345
申请日：2013-01-28
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Hiromitsu Ito
IPC: H01Q1/36 , H01Q7/00 , G06K19/077 , H01Q1/22 , H01Q1/38
CPC classification number: H01Q7/00 , G06K19/07794 , H01Q1/2225 , H01Q1/38
Abstract: A resonant circuit and an antenna device achieve a low resonance frequency without increasing a coil size, and improve communication performance. In the resonant circuit, two coil-shaped conductors are arranged so as to be opposed to each other with a dielectric sheet interposed therebetween. The two coil-shaped conductors are, at the opposed portions thereof, coupled with a capacitance interposed therebetween, and wound so that electric currents flowing through the respective conductors trend in the same direction in a planar view. The opposed area in at least a portion of the outermost windings and/or innermost windings of the coil-shaped conductors is larger as compared with the opposed area in any other winding, and the respective ends of the conductors define power feeding units.
Abstract translation: 谐振电路和天线装置在不增加线圈尺寸的情况下实现低谐振频率，并且提高通信性能。 在谐振电路中，两个线圈状导体被布置成彼此相对，其间插入有电介质片。 两个线圈状导体在其相对的部分处与插入其间的电容耦合，并缠绕，使得流过各个导体的电流在平面图中以相同的方向趋势。 与任何其他绕组中的相对面积相比，线圈状导体的最外绕组和/或最内圈的至少一部分中的相对面积较大，并且导体的各端限定供电单元。
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Patent Agency Ranking
公开(公告)号：US10164347B2
公开(公告)日：2018-12-25
申请号：US14803262
申请日：2015-07-20
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Hiromitsu Ito
IPC: H01Q21/29 , H01Q1/50 , H01Q1/24 , H01Q7/06 , H01Q21/00 , H01Q7/00 , H01Q1/52 , H01Q21/06 , H01Q21/24 , H01Q21/28 , H04M1/02
Abstract: An antenna device includes a plurality of coil antennas each including a coil conductor wound around a winding axis and a planar conductor including a first edge and a second edge between which a corner or a curved portion is interposed. A first coil antenna is arranged at a position along the first edge of the planar conductor at which one coil opening thereof is superposed with the planar conductor when viewed in plan and that is close to the corner or close to the curved portion. A second coil antenna is arranged at a position along the second edge of the planar conductor at which one coil opening thereof is superposed with the planar conductor when viewed in plan. The first coil antenna and the second coil antenna are connected such that magnetic flux generated by the first coil antenna and magnetic flux generated by the second coil antenna are in phase with each other in a direction toward the outside with the first edge and the second edge of the planar conductor defining boundaries.
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公开(公告)号：US10135152B2
公开(公告)日：2018-11-20
申请号：US15652286
申请日：2017-07-18
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Hiromitsu Ito
Abstract: An antenna device includes a power supply coil coupled to a first power supply circuit operating in a first frequency band, a first conductive member including a first main surface, a second conductive member including a second main surface, a third conductive member, and first connections. The second main surface of the second conductive member is disposed with at least a portion thereof opposing the first main surface. The third conductive member has an area that is smaller than an area of the first conductive member when viewed in a direction perpendicular or substantially perpendicular to the first main surface. The first conductive member, the third conductive member, and the first connections define a loop of a magnetic field antenna in the first frequency band. The power supply coil is closer to the third conductive member than to the first conductive member when viewed in the Z-direction.
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公开(公告)号：US10135140B2
公开(公告)日：2018-11-20
申请号：US13765541
申请日：2013-02-12
Applicant: MURATA MANUFACTURING CO., LTD.
Inventor： Kuniaki Yosui , Hiroyuki Kubo , Hiromitsu Ito
Abstract: An antenna includes antenna coil having a magnetic-material core and a coil conductor. The antenna coil is arranged toward a side of a planar conductor, such as a circuit board. Of the coil conductor, a first conductor part close to a first main face of the magnetic-material core and a second conductor part close to a second main face of the magnetic-material core are provided such that the first conductor part is not over the second conductor part in view from a line in a direction normal to the first main face or the second main face of the magnetic-material core. In addition, a coil axis of the coil conductor is orthogonal to the side of the planar conductor.
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公开(公告)号：US20180114042A1
公开(公告)日：2018-04-26
申请号：US15838529
申请日：2017-12-12
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Nobuyuki Tenno , Hiromitsu Ito , Kentaro Mikawa
IPC: G06K7/10 , G06K19/077 , H01Q7/00
Abstract: An antenna device includes first and second coil antennas with winding axis directions that are not perpendicular to each other, and a feeder coil including a winding axis that extends perpendicular or substantially perpendicular to the winding axis of the first coil antenna. The feeder coil is located between the first and second coil antennas in the winding axis direction thereof. A first coil aperture is closer to a coil aperture of the first coil antenna than a second coil aperture. The second coil aperture is closer to a coil aperture of the second coil antenna than the first coil aperture. The first and second coil antennas are connected to each other in a polarity such that magnetic fluxes thereof with respect to the winding axis direction of the first coil antenna are in phase with each other.
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公开(公告)号：US09705208B2
公开(公告)日：2017-07-11
申请号：US14803261
申请日：2015-07-20
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Hiromitsu Ito
IPC: H01Q7/00 , H01Q1/24 , H01Q21/00 , H01Q7/06 , H01Q21/29 , H01Q1/50 , H01Q1/52 , H01Q21/06 , H01Q21/24 , H01Q21/28 , H04M1/02
CPC classification number: H01Q21/29 , H01Q1/24 , H01Q1/243 , H01Q1/50 , H01Q1/521 , H01Q7/00 , H01Q7/06 , H01Q21/0006 , H01Q21/06 , H01Q21/24 , H01Q21/28 , H04M1/026 , H04M2250/04
Abstract: An antenna device includes coil antennas each including a coil conductor wound around a winding axis and a planar conductor that includes at least one edge and that is superposed with at least a portion of each of the coil antennas when viewed in plan. Winding axes of the plurality of coil antennas are parallel or substantially parallel to each other and so as to extend along a surface of the planar conductor, first coil opening ends of coil openings of the coil antennas in a direction in which the winding axes extend are contiguous with the edge and the coil antennas are connected such that magnetic fields generated by the coil antennas are in phase with each other. When W represents a width of the planar conductor, A represents a central spacing of the coil antennas and B represents a distance from a center of a coil antenna to a side of the planar conductor, A≦( 3/10)W.
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