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公开(公告)号：US10575396B2
公开(公告)日：2020-02-25
申请号：US15920508
申请日：2018-03-14
Inventor： Ryosuke Shiozaki , Yuto Suzuki , Hideki Iwaki
Abstract: A circuit board includes: a substrate; a first power feed line disposed so as to be close to a plurality of radiating elements provided on a surface of the substrate and to extend in a first direction; a first connection conductor extending in a second direction orthogonal to the first direction, one end of the first connection conductor being connected to the first power feed line substantially at its central portion in the first direction; and a second power feed line that has a first line part extending in a third direction orthogonal to the second direction, the first line part joining to another end of the first connection conductor, and also has a second line part branching from the first line part, the second line part joining to the other end from a third direction side.
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公开(公告)号：US10141658B2
公开(公告)日：2018-11-27
申请号：US15603062
申请日：2017-05-23
Inventor： Chie Yamamoto , Hideki Iwaki , Ryosuke Shiozaki
IPC: H01Q21/00 , H01Q21/22 , H01Q1/38 , H01Q3/34 , H01Q9/04 , H05K1/02 , H01P5/02 , H01Q1/32 , H01Q11/04 , H01Q21/06 , H01Q21/08 , H05K1/03 , H05K3/46
Abstract: An antenna module includes a multilayer board, a phased array antenna that includes antenna elements arranged on an outer face of a second conductor layer included in the multilayer board and adjusts one or more beam directions of the antenna elements, a radio frequency (RF) chip that is arranged on an outer face of first conductor layers included in the multilayer board and outputs the radio frequency signal, a matching circuit that is arranged on the outer face of the first conductor layers and adjusts matching between impedance of the antenna elements and impedance of the RF chip, a through hole that couples the first conductor layers and the second conductor layer, and one or more vias that are on an outer side in a diameter direction of the through hole and couples the first conductor layers.
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公开(公告)号：US10122074B2
公开(公告)日：2018-11-06
申请号：US14883368
申请日：2015-10-14
Inventor： Hiroyoshi Tagi , Hideki Iwaki
Abstract: An antenna device comprises a dielectric substrate that has first and second surfaces; first and second antenna elements that are arranged on the first surface of the dielectric substrate; a ground conductor that is arranged on the second surface of the dielectric substrate; and an electromagnetic band gap structure that is arranged between the first and second antenna elements on the dielectric substrate. The electromagnetic band gap structure comprises: a plurality of patch conductors that are arranged on the first surface of the dielectric substrate and are electromagnetically coupled with the ground conductor; and at least one opening that is arranged in the ground conductor to expose the dielectric substrate, and causes the electromagnetic coupling between the plurality of patch conductors and the ground conductor to change.
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Patent Agency Ranking
公开(公告)号：US20240170942A1
公开(公告)日：2024-05-23
申请号：US18424152
申请日：2024-01-26
Inventor： Hideki Iwaki , Hideki Watanabe
CPC classification number: H02H3/033 , H02H1/0007 , H02H3/08
Abstract: A protection system includes: a first positive terminal; a second positive terminal; a first relay configured to be opened and closed by contact and separation of a first contact portion and a second contact portion; and a fuse. The first relay and the fuse are connected in series between the first positive terminal and the second positive terminal, and when an electric current exceeding a threshold current flows to the first relay, the first contact portion and the second contact portion are separated in the first relay at a first time, and when the first contact portion and the second contact portion are separated, an arc discharge occurs between the first contact portion and the second contact portion, an arc discharge occurs between the first electrode and the second electrode of the fuse at a second time, the arc discharge occurs at both of the first relay and the fuse and a difference in potential between the first electrode and the second electrode of the fuse increases during a period between the second time and a third time, and the first positive terminal and the second positive terminal are disconnected at a fourth time.
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公开(公告)号：US11923672B2
公开(公告)日：2024-03-05
申请号：US17437831
申请日：2020-03-24
Inventor： Hideki Iwaki , Hideki Watanabe
CPC classification number: H02H3/033 , H02H1/0007 , H02H3/08
Abstract: A protection system includes: a first positive terminal; a second positive terminal; a first relay configured to be opened and closed by contact and separation of a first contact portion and a second contact portion; and a fuse. The first relay and the fuse are connected in series between the first positive terminal and the second positive terminal, and when an electric current exceeding a threshold current flows to the first relay, the first contact portion and the second contact portion are separated in the first relay at a first time, and when the first contact portion and the second contact portion are separated, an arc discharge occurs between the first contact portion and the second contact portion, an arc discharge occurs between the first electrode and the second electrode of the fuse at a second time, the arc discharge occurs at both of the first relay and the fuse and a difference in potential between the first electrode and the second electrode of the fuse increases during a period between the second time and a third time, and the first positive terminal and the second positive terminal are disconnected at a fourth time.
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公开(公告)号：US10014572B2
公开(公告)日：2018-07-03
申请号：US15140275
申请日：2016-04-27
Inventor： Hiroyoshi Tagi , Hideki Iwaki
CPC classification number: H01Q1/38 , H01Q1/243 , H01Q1/48 , H01Q1/521 , H01Q1/525 , H01Q15/008 , H01Q21/06
Abstract: An antenna device of the present disclosure includes: a dielectric layer; first and second conductor layers provided on both surfaces, respectively, of the dielectric layer; first and second antenna elements provided in the first conductor layer; a grounded conductor provided in the second conductor layer; and an EBG structure provided between the first and second antenna elements, wherein the EBG structure includes a first EBG portion provided in the first conductor layer, the first EBG portion including a plurality of first patch conductors electromagnetically coupled to the grounded conductor, and a second EBG portion provided in the second conductor layer, the second EBG portion including a plurality of second patch conductors electromagnetically coupled to the grounded conductor.
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公开(公告)号：US09960485B2
公开(公告)日：2018-05-01
申请号：US14884765
申请日：2015-10-16
Inventor： Hiroyoshi Tagi , Hideki Iwaki
CPC classification number: H01Q1/38 , G01S7/032 , H01Q1/405 , H01Q1/521 , H01Q15/006
Abstract: An antenna device comprises a first dielectric substrate; first and second antenna elements arranged on a first surface of the first dielectric substrate; a ground conductor arranged on a second surface of the first dielectric substrate; and an EBG structure arranged between the first and second antenna elements. The EBG structure comprises first patch conductors that are each arranged in contact with the first surface of the first dielectric substrate and are each electromagnetically coupled with the ground conductor; second patch conductors that are each arranged in a prescribed distance from the first surface of the first dielectric substrate in a direction opposite to the second surface, and are each electromagnetically coupled with corresponding one of the first patch conductors; and first connection conductors that electrically connect the first patch conductors with the second patch conductors.
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公开(公告)号：US12230954B2
公开(公告)日：2025-02-18
申请号：US18424152
申请日：2024-01-26
Inventor： Hideki Iwaki , Hideki Watanabe
Abstract: A protection system includes: a first positive terminal; a second positive terminal; a first relay configured to be opened and closed by contact and separation of a first contact portion and a second contact portion; and a fuse. The first relay and the fuse are connected in series between the first positive terminal and the second positive terminal, and when an electric current exceeding a threshold current flows to the first relay, the first contact portion and the second contact portion are separated in the first relay at a first time, and when the first contact portion and the second contact portion are separated, an arc discharge occurs between the first contact portion and the second contact portion, an arc discharge occurs between the first electrode and the second electrode of the fuse at a second time, the arc discharge occurs at both of the first relay and the fuse and a difference in potential between the first electrode and the second electrode of the fuse increases during a period between the second time and a third time, and the first positive terminal and the second positive terminal are disconnected at a fourth time.
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