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公开(公告)号：US20140203985A1
公开(公告)日：2014-07-24
申请号：US14221356
申请日：2014-03-21
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Nobuhito TSUBAKI , Takashi NOMA , Noboru KATO
IPC: H01Q7/06
Abstract: To ensure a sufficient communication distance and to concurrently suppress a conductor loss, a coil antenna includes a magnetic core including a first peripheral surface including at least a first principal surface, a first coil conductor located on the first principal surface and wound around a predetermined winding axis, a first base material layer stacked on the first principal surface, including at least a first surface parallel or substantially parallel to the first principal surface, and made of a material having a lower magnetic permeability than the magnetic core, and a second coil conductor located on at least the first surface. Opposite ends of the second coil conductor are coupled to the first coil conductor on the first principal surface, and a direction in which a current flows through the first coil conductor on the first principal surface is substantially the same as a direction in which a current flows through the second coil conductor on the first surface.
Abstract translation: 为了确保足够的通信距离并且同时抑制导体损耗，线圈天线包括磁芯，该磁芯包括至少包括第一主表面的第一周边表面，位于第一主表面上的第一线圈导体并围绕预定绕组 所述第一基材层层叠在所述第一主表面上，所述第一基材层至少包括与所述第一主表面平行或基本平行的第一表面，并且由具有比所述磁芯低的磁导率的材料制成;以及第二线圈导体 至少位于第一表面。 第二线圈导体的相对端部耦合到第一主表面上的第一线圈导体，并且电流流过第一主表面上的第一线圈导体的方向与电流流动的方向基本相同 通过第一表面上的第二线圈导体。
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公开(公告)号：US20230217631A1
公开(公告)日：2023-07-06
申请号：US18182725
申请日：2023-03-13
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Keijiro KOJIMA , Nobuhito TSUBAKI
IPC: H05K7/20
CPC classification number: H05K7/20336
Abstract: A vapor chamber that includes: a housing with an internal space between a first sheet and a second sheet; a working fluid in the internal space; a plurality of first projecting portions on an inner wall surface of the first sheet and spaced from each other; a plurality of second projecting portions on an inner wall surface of the first sheet and spaced from each other, an area of a section of each of the second projecting portions perpendicular to a height direction being larger than an area of a section of each of the first projecting portions perpendicular to the height direction; a plurality of pillars on an inner wall surface of the second sheet and spaced from each other and at respective positions overlapping the plurality of second projecting portions; and a wick between and joined to the plurality of pillars and the plurality of second projecting portions.
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公开(公告)号：US20140218262A1
公开(公告)日：2014-08-07
申请号：US14249374
申请日：2014-04-10
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Nobuhito TSUBAKI
IPC: H01Q7/00
Abstract: In order to increase flexibility regarding a disposition of an antenna coil and to enable a hot spot to be provided at a desired position, an antenna device includes a main coil antenna and a sub-coil antenna connected to the main coil antenna. A coil opening of the sub-coil antenna and a coil opening of the main coil antenna are arranged side by side in plan view so that the main coil antenna and the sub-coil antenna are magnetically coupled to each other. The main coil antenna and the sub-coil antenna are wound so as to generate magnetic fields having opposite phases.
Abstract translation: 为了增加对天线线圈的配置的灵活性，并且能够在期望的位置设置热点，天线装置包括连接到主线圈天线的主线圈天线和子线圈天线。 子线圈天线的线圈开口和主线圈天线的线圈开口在平面图中并排布置，使得主线圈天线和子线圈天线彼此磁耦合。 缠绕主线圈天线和子线圈天线以产生具有相反相位的磁场。
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公开(公告)号：US20180123223A1
公开(公告)日：2018-05-03
申请号：US15843105
申请日：2017-12-15
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Shinichi NAKANO , Masahiro OZAWA , Nobuhito TSUBAKI
CPC classification number: H01Q1/243 , H01Q1/241 , H01Q1/36 , H01Q1/50 , H01Q13/10 , H04B5/0031 , H04M1/0202
Abstract: An antenna device includes a casing including a metal casing portion and a feed coil. The metal casing portion includes a main surface, a side surface connected to the main surfaces, and a notch portion located in the side surface. The feed coil is disposed inside the casing to be coupled with the metal casing portion by a magnetic field, and includes a winding central portion forming a coil opening portion. The feed coil is disposed near the notch portion, with the coil opening portion directed to a region including the notch portion.
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公开(公告)号：US20180151954A1
公开(公告)日：2018-05-31
申请号：US15878554
申请日：2018-01-24
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Teppei MIURA , Nobuo IKEMOTO , Jun SASAKI , Noboru KATO , Nobuhito TSUBAKI
Abstract: An antenna device includes a base including a planar conductor disposed thereon, and a coil antenna. The coil antenna includes a coil conductor wound around a magnetic core. The coil antenna is arranged such that a coil opening of the coil conductor is closed to an edge of the planar conductor. A current passing through the coil conductor induces a current in the planar conductor. Thus, a first magnetic flux occurs in the coil antenna, and a second magnetic flux occurs in the planar conductor. Therefore, a third magnetic flux occurs in an area of the planar conductor. Accordingly, the antenna device achieves a small footprint, a small-sized communication terminal apparatus and a desired communication distance.
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Patent Agency Ranking
公开(公告)号：US20170047655A1
公开(公告)日：2017-02-16
申请号：US15340029
申请日：2016-11-01
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Nobuhito TSUBAKI , Noboru KATO
CPC classification number: H01Q7/06 , H01Q1/2291 , H01Q1/243 , H01Q7/00 , H01Q21/08
Abstract: An antenna device includes a feeding coil antenna and a booster coil antenna electromagnetically coupled to the feeding coil antenna. The feeding coil antenna includes a plurality of coil portions including at least one magnetic body and each including a coil conductor wound around the at least one magnetic body. The plurality of coil portions are connected to one another in an in-phase mode, and are arranged near one another such that winding axes of the coil conductors are oriented approximately in the same direction and at least portions of respective openings of the coil conductors face one another.
Abstract translation: 天线装置包括馈电线圈天线和与馈电线圈天线电磁耦合的升压线圈天线。 馈电线圈天线包括多个线圈部分，其包括至少一个磁体，并且每个线圈部分包括卷绕在该至少一个磁体周围的线圈导体。 多个线圈部分以同相模式彼此连接，并且彼此靠近布置，使得线圈导体的绕组轴线大致相同的方向定向，并且线圈导体的各个开口的至少部分面对 另一个。
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公开(公告)号：US20160043469A1
公开(公告)日：2016-02-11
申请号：US14918747
申请日：2015-10-21
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Nobuhito TSUBAKI , Takashi NOMA , Noboru KATO
IPC: H01Q7/08
Abstract: To ensure a sufficient communication distance and to concurrently suppress a conductor loss, a coil antenna includes a magnetic core including a first peripheral surface including at least a first principal surface, a first coil conductor located on the first principal surface and wound around a predetermined winding axis, a first base material layer stacked on the first principal surface, including at least a first surface parallel or substantially parallel to the first principal surface, and made of a material having a lower magnetic permeability than the magnetic core, and a second coil conductor located on at least the first surface. Opposite ends of the second coil conductor are coupled to the first coil conductor on the first principal surface, and a direction in which a current flows through the first coil conductor on the first principal surface is substantially the same as a direction in which a current flows through the second coil conductor on the first surface.
Abstract translation: 为了确保足够的通信距离并且同时抑制导体损耗，线圈天线包括磁芯，该磁芯包括至少包括第一主表面的第一周边表面，位于第一主表面上的第一线圈导体并围绕预定绕组 所述第一基材层层叠在所述第一主表面上，所述第一基材层至少包括与所述第一主表面平行或基本平行的第一表面，并且由具有比所述磁芯低的磁导率的材料制成;以及第二线圈导体 至少位于第一表面。 第二线圈导体的相对端部耦合到第一主表面上的第一线圈导体，并且电流流过第一主表面上的第一线圈导体的方向与电流流动的方向基本相同 通过第一表面上的第二线圈导体。
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公开(公告)号：US20140198011A1
公开(公告)日：2014-07-17
申请号：US14217901
申请日：2014-03-18
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Nobuhito TSUBAKI , Noboru KATO
IPC: H01Q7/00
CPC classification number: H01Q7/06 , H01Q1/2291 , H01Q1/243 , H01Q7/00 , H01Q21/08
Abstract: An antenna device includes a feeding coil antenna and a booster coil antenna electromagnetically coupled to the feeding coil antenna. The feeding coil antenna includes a plurality of coil portions including at least one magnetic body and each including a coil conductor wound around the at least one magnetic body. The plurality of coil portions are connected to one another in an in-phase mode, and are arranged near one another such that winding axes of the coil conductors are oriented approximately in the same direction and at least portions of respective openings of the coil conductors face one another.
Abstract translation: 天线装置包括馈电线圈天线和电磁耦合到馈线线圈天线的升压线圈天线。 馈电线圈天线包括多个线圈部分，其包括至少一个磁体，并且每个线圈部分包括卷绕在该至少一个磁体周围的线圈导体。 多个线圈部分以同相模式彼此连接，并且彼此靠近布置，使得线圈导体的绕组轴线大致相同的方向定向，并且线圈导体的各个开口的至少部分面对 另一个。
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公开(公告)号：US20220235496A1
公开(公告)日：2022-07-28
申请号：US17719024
申请日：2022-04-12
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Takafumi INOUE , Nobuhito TSUBAKI , Masayuki TSUJI , Eiji TAGUCHI , Hirokazu HAYASHI
Abstract: A thread that includes a first fiber having at least one groove extending in a length direction thereof; and at least one second fiber constructed to generate a potential by external energy. The second fiber is disposed in a region corresponding to the groove of the first fiber such that a space is between the groove of the first fiber and the second fiber.
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公开(公告)号：US20180175482A1
公开(公告)日：2018-06-21
申请号：US15898243
申请日：2018-02-16
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Noboru KATO , Masahiro OZAWA , Nobuhito TSUBAKI
Abstract: An antenna of a communication terminal is disposed on a side on which a bottom surface of a reflective plate, which is included in a display, is present. When the reflective plate is irradiated by an LED light source, the antenna cannot be seen from the side on which a display screen of the display is disposed. Accordingly, an antenna coil of the antenna does not need transparent electrodes and can be made of various materials each having a high conductivity. Therefore, the antenna has high sensitivity, low manufacturing cost, and very efficiently performs near field communication with an external device located on the display screen side of the display.
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