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公开(公告)号：US09812245B2
公开(公告)日：2017-11-07
申请号：US14841795
申请日：2015-09-01
发明人： Kenichi Ishizuka
CPC分类号： H01F27/2804 , H01F17/0013 , H01F2017/0073 , H03H7/0115 , H03H7/09 , H03H7/38 , H03H2001/0085
摘要： In a laminated coil component, first coil conductor patterns define a coil opening that generates a magnetic flux in a first direction, second coil conductor patterns define a first coil opening that generates a magnetic flux in the first direction, and a second coil opening that generates a magnetic flux in a second direction. A difference in area between the first coil opening and the second coil opening determines a degree of coupling of the coil defined by the first coil conductor pattern and the coil defined by the second coil conductor pattern. This provides a close proximal arrangement of a plurality of coils proximally while significantly reducing or preventing unnecessary coupling between the coils.
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公开(公告)号：US09660671B2
公开(公告)日：2017-05-23
申请号：US15145196
申请日：2016-05-03
发明人： Kenichi Ishizuka
IPC分类号： H01F19/04 , H04B1/00 , H03H7/38 , H01F17/00 , H01F27/245 , H01F27/28 , H01F27/29 , H04B1/40 , H04W88/06
摘要： In a transformer, first and second coils are provided on different substrate layers of a multilayer body. The first and second coil conductors are interlayer-connected to each other by interlayer connection conductors. A coil aperture defined by the first coil conductor and a coil aperture defined by the second coil conductor overlap each other when seen in a plan view from a laminating direction of the multilayer body. The first and second coil conductors are connected to each other at at least two places with the interlayer connection conductors interposed therebetween. A parallel connection portion including a first portion of the first coil conductor and a first portion of the second coil conductor is provided, and a series connection portion including a second portion of the first coil conductor and a second portion of the second coil conductor is provided.
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公开(公告)号：US09660341B2
公开(公告)日：2017-05-23
申请号：US14641555
申请日：2015-03-09
发明人： Kenichi Ishizuka , Noboru Kato
摘要： In a signal line module and a communication terminal apparatus, a first connection portion connected to a feeding circuit, a second connection portion connected to a radiation element, a first high-frequency line portion, a second high-frequency line portion, and a matching circuit portion defining all of or a portion of a first matching circuit are integrally provided in a multilayer body including a plurality of base material layers. The first connection portion, the first high-frequency line portion, and the matching circuit portion are in a ground zone superposed with a ground conductor, when viewed in plan in a stacking direction of the multilayer body, and the second high-frequency line portion and the second connection portion are in a non-ground zone. The second high-frequency line portion and the second connection portion, together with the radiation element, operate as a radiation portion.
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公开(公告)号：US09197187B2
公开(公告)日：2015-11-24
申请号：US14072818
申请日：2013-11-06
发明人： Kenichi Ishizuka , Noboru Kato , Noriyuki Ueki
CPC分类号： H03H7/01 , H01F19/04 , H03H7/09 , H03H7/38 , H03H7/463 , H04B1/0057 , H04B1/0458
摘要： A front-end circuit includes a diplexer and an impedance conversion circuit. The diplexer includes a feeding side common port through which a high-frequency signal in a high band and a high-frequency signal in a low band are input and output, a first port through which a high-frequency signal in a high band is input and output, and a second port through which a high-frequency signal in a low band is input and output, and demultiplexes or multiplexes the high-frequency signal in a low band and the high-frequency signal in a high band. The impedance conversion circuit is connected between the second port of the diplexer and an antenna port. The first port of the diplexer is directly connected to the antenna port through a transmission line.
摘要翻译： 前端电路包括双工器和阻抗转换电路。 双工器包括：输入和输出高频带中的高频信号和低频高频信号的馈电侧公共端口，输入高频带中的高频信号的第一端口 并输出低频带中的高频信号的第二端口，并输出低频带中的高频信号和高频信号的多路复用或多路复用。 阻抗转换电路连接在双工器的第二端口和天线端口之间。 双工器的第一个端口通过传输线直接连接到天线端口。
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公开(公告)号：US11831292B2
公开(公告)日：2023-11-28
申请号：US17356572
申请日：2021-06-24
IPC分类号： H03H7/01
CPC分类号： H03H7/1766 , H03H7/0115 , H03H7/1791
摘要： An LC composite component includes a multilayer body including insulating base members that are laminated and include insulating base members on which conductor patterns are provided. Capacitor conductor patterns are provided on insulating base members different from an insulating base member on which a coil conductor pattern is provided, and each include an extending portion overlapping with a line segment connecting a center of a first terminal and a center of a second terminal in a shortest distance as viewed in the lamination direction and projecting portions projecting in directions different from the direction of the line segment, and the projecting portions overlap with linear portions of the coil conductor pattern without overlapping with bent portions thereof as viewed in the lamination direction.
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公开(公告)号：US11811381B2
公开(公告)日：2023-11-07
申请号：US17356571
申请日：2021-06-24
CPC分类号： H03H7/0115 , H01F27/2804 , H01F27/29 , H01F27/40 , H01G4/012 , H01G4/30 , H03H7/09 , H01F2027/2809
摘要： First and second coils have winding axes in a laminated direction of base material layers and are magnetically coupled to each other. First and second capacitors are positioned in the laminated direction on layers different from layers on which the first and second coils are provided. The first and second coils are connected so that the winding directions of the first and second coils are opposite. The second capacitor is connected in parallel to a series circuit of the first coil and the second coil. The first capacitor is connected between a position where the first coil is connected to the second coil and a reference potential electrode. Mutual inductance caused by coupling between the first and second coils and the first capacitor provides a first attenuation pole and a parallel connection circuit of the series circuit and the second capacitor provides a second attenuation pole.
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公开(公告)号：US11777466B2
公开(公告)日：2023-10-03
申请号：US17342671
申请日：2021-06-09
发明人： Hisashi Akiyama , Kenichi Ishizuka
CPC分类号： H03H7/38 , H01F27/28 , H03F3/19 , H04B1/40 , H03F2200/451
摘要： A matching circuit includes first and second input/output ports; first, second, and third coils; and a capacitor. The first coil is connected in series between the first and second input/output ports, and the second coil is connected in shunt between a ground and an input/output line between the first and second input/output ports. The first and second coils are magnetically coupled to each other, the third coil is magnetically coupled to at least one of the first and second coils, the capacitor is directly or indirectly connected to the third coil, and a closed circuit including the capacitor and the third coil is provided.
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公开(公告)号：US10903812B2
公开(公告)日：2021-01-26
申请号：US16542338
申请日：2019-08-16
摘要： A trap filter includes a first inductor, a second inductor, and a capacitor. A first end of the first inductor extends to a first connection portion, a third end of the second inductor is connected to a second end of the first inductor, and a fourth end extends to a second connection portion. The capacitor is connected in parallel with the second inductor. The first inductor and the second inductor are subtractive-polarity coupled. An inductance value of the second inductor is less than an absolute value of mutual inductance generated by coupling of the first inductor and the second inductor.
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公开(公告)号：US10886601B2
公开(公告)日：2021-01-05
申请号：US16258869
申请日：2019-01-28
发明人： Kenichi Ishizuka , Takeaki Tamayama
摘要： An electronic device includes an antenna, and a plate-shaped heat spreader including first and second metal layers that are stacked, a working fluid in an enclosed space interposed between the first and second metal layers, and a joint along which outer peripheral portions around the enclosed space are joined. The heat spreader includes an operational region in which the enclosed space is located and a quasi-operational region other than the enclosed space. The antenna is provided in the quasi-operational region in a plan view of the heat spreader.
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公开(公告)号：US10340877B2
公开(公告)日：2019-07-02
申请号：US15640763
申请日：2017-07-03
发明人： Kenichi Ishizuka
摘要： An antenna device includes an impedance converter circuit connected to a feeder circuit, an impedance-conversion-ratio adjustment circuit, and an antenna. The impedance converter circuit includes a first inductance element and a second inductance element, which are coupled to each other through magnetic fields, so as to provide an autotransformer circuit. The impedance-conversion-ratio adjustment circuit includes a third inductance element which is series-connected between the impedance converter circuit and an antenna port, and a capacitance element which is shunt-connected between the antenna port and ground. The impedance-conversion-ratio adjustment circuit corrects an impedance conversion ratio of the impedance converter circuit in accordance with a frequency band.
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