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公开(公告)号：US11431071B2
公开(公告)日：2022-08-30
申请号：US17160559
申请日：2021-01-28
Applicant: TDK CORPORATION
Inventor： Yuta Ashida , Masahiro Tatematsu , Shuhei Sawaguchi , Shigemitsu Tomaki , Tetsuzo Goto , Takeshi Kijima
Abstract: A balun includes first to fourth lines and a stack. A plurality of first conductor layers forming the first and third lines are located in a first region in the stack. A plurality of second conductor layers forming the second and fourth lines are located in a second region in the stack. A ground conductor layer is located closer to the second region than to the first region. The plurality of second conductor layers include a conductor layer pair where a distance between two conductor layers is smallest.
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公开(公告)号：US20250125781A1
公开(公告)日：2025-04-17
申请号：US18910435
申请日：2024-10-09
Applicant: TDK CORPORATION
Inventor： Yuta ASHIDA , Shin Takane , Shuhei Sawaguchi , Tomonori Terui , Keigo Shibuya , Tetsuzo Goto , Masahiro Tatematsu
IPC: H03H7/01
Abstract: A filter device includes a stack including a plurality of dielectric layers stacked together, and a resonator configured using a conductor integrated into the stack. Each of the plurality of dielectric layers is formed of a dielectric material, and has a resonance frequency that changes depending on a temperature. In the dielectric material, the resonance frequency changes linearly with respect to a change in the temperature when the temperature is within a first temperature range, and the resonance frequency changes nonlinearly with respect to the change in the temperature when the temperature is within a second temperature range.
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公开(公告)号：US10084225B2
公开(公告)日：2018-09-25
申请号：US15367578
申请日：2016-12-02
Applicant: TDK CORPORATION
Inventor： Yuta Ashida , Noriaki Ootsuka , Takeshi Kijima , Yasunori Sakisaka , Tetsuzo Goto
Abstract: A directional coupler includes a first to a fourth port, a main line connecting the first port and the second port, a first and a second subline section configured to be electromagnetically coupled to the main line, and a phase shifter. The first subline section, the phase shifter, and the second subline section are arranged in this order in series between the third port and the fourth port. The phase shifter outputs a signal that is phase-delayed relative to an input signal. The phase delay amount of the output signal of the phase shifter relative to the input signal increases with increasing frequency of the input signal. A frequency twice as high as the frequency of the input signal at which the phase delay amount is 90 degrees is lower than the frequency of the input signal at which the phase delay amount is 180 degrees.
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公开(公告)号：US10965036B2
公开(公告)日：2021-03-30
申请号：US16390346
申请日：2019-04-22
Applicant: TDK CORPORATION
Inventor： Tetsuzo Goto
Abstract: An antenna system includes an antenna substrate, and an antenna element mounted on the antenna substrate. The antenna substrate includes a substrate body, a first ground layer, a feed line, and a first radiation element. The feed line includes a first connection. The first radiation element includes a width-changing portion and a second connection. The antenna element includes an element body, a first terminal, a second terminal, and a second radiation element. The second radiation element is provided in the element body and connects the first terminal and the second terminal. The first terminal is connected to the first connection. The second terminal is connected to the second connection.
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公开(公告)号：US10276912B2
公开(公告)日：2019-04-30
申请号：US15787059
申请日：2017-10-18
Applicant: TDK Corporation
Inventor： Tetsuzo Goto
IPC: H01P5/18
Abstract: The auxiliary ground layer is a part in which the main line and the sub line do not overlap in the lamination direction and is disposed to face a part in which a distance from the first ground layer and a distance from the second ground layer are different in the lamination direction. When a longer distance is set as a first distance a and a shorter distance is set as a second distance b between a distance between the non-overlapping part and the first ground layer and a distance between the non-overlapping part and the second ground layer, and a third distance between the non-overlapping part and the auxiliary ground layer is set as c, the relationship of a>c≥b is satisfied.
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Patent Agency Ranking
公开(公告)号：US09391371B2
公开(公告)日：2016-07-12
申请号：US14445792
申请日：2014-07-29
Applicant: TDK Corporation , TDK Dalian Corporation
Inventor： Tetsuzo Goto , Naoaki Utagawa , Yongshuai Zheng
Abstract: An antenna device 1 has a capacitive coupling element 10 mounted on a printed circuit board 20. Strip patterns 21 to 23 are provided in a grand clearance region 20A defined on one principal surface of the printed circuit board 20. The strip pattern 21 is connected to a feeding line 29 after extending in a first direction from the connecting point with the capacitive coupling element 10. The strip pattern 22 is connected to a feeding line 30 after extending in a second direction, that is an opposite to the first direction, from the connecting point. The strip pattern 23 is connected to a ground pattern 24 after extending in a third direction from the connecting point. The capacitive coupling element 10 is disposed with an offset toward the first direction. The strip pattern 21 is shorter in length than the strip pattern 22.
Abstract translation: 天线装置1具有安装在印刷电路板20上的电容耦合元件10.带状图案21至23设置在限定在印刷电路板20的一个主表面上的大间隙区域20A中。带状图案21连接到 在与电容耦合元件10的连接点沿第一方向延伸的馈电线29.带状图案22在沿与第一方向相反的第二方向延伸的方式连接到馈电线30 连接点。 带状图案23在从连接点向第三方向延伸之后连接到接地图案24。 电容耦合元件10朝向第一方向偏移地设置。 带状图案21的长度比带状图案22短。
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公开(公告)号：US20230282954A1
公开(公告)日：2023-09-07
申请号：US18175098
申请日：2023-02-27
Applicant: TDK CORPORATION
Inventor： Yuta ASHIDA , Masahiro Tatematsu , Shuhei Sawaguchi , Keigo Shibuya , Tetsuzo Goto
Abstract: A filter circuit includes two ports, a first resonant circuit, and a second resonant circuit. The first resonant circuit is provided between the two ports in a circuit configuration and coupled with both of the two ports. The second resonant circuit is provided between the two ports in the circuit configuration and coupled with at least one of the two ports. Coupling of the second resonant circuit and the two ports is weaker than coupling of the first resonant circuit and the two ports.
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公开(公告)号：US09893408B2
公开(公告)日：2018-02-13
申请号：US15206614
申请日：2016-07-11
Applicant: TDK CORPORATION
Inventor： Yuta Ashida , Yasunori Sakisaka , Noriaki Ootsuka , Tetsuzo Goto , Takeshi Kijima
CPC classification number: H01P5/18 , H01P5/187 , H03H7/0115 , H03H2001/0078
Abstract: A directional coupler includes: a first to a fourth port; a main line connecting the first and second ports; a first to a fourth subline section electromagnetically coupled to the main line; a first to a third matching section; and a stack. The first subline, first matching, third subline, third matching, fourth subline, second matching, and second subline sections are arranged in this order between the third and fourth port. The first and second matching sections include an inductor connecting two subline sections located on opposite sides of the matching section. Each of one or more conductor layers used to form the inductor includes two connection portions for electrical connection to respective other elements, and a line portion connecting the two connection portions. The inductor excluding the connection portions does not include potions that overlap each other when viewed in the stacking direction of the stack.
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公开(公告)号：US20240387969A1
公开(公告)日：2024-11-21
申请号：US18661108
申请日：2024-05-10
Applicant: TDK CORPORATION
Inventor： Shuhei SAWAGUCHI , Tetsuzo Goto , Yuto Ashida , Masahiro Tatematsu , Keigo Shibuya , Tomonori Terui
IPC: H01P1/203
Abstract: A filter includes: a first ground conductor layer and a second ground conductor layer arranged to be spaced from each other, a resonator conductor layer arranged between the first ground conductor layer and the second ground conductor layer and constituting a part of a resonator, a through hole connecting the first ground conductor layers and the resonator conductor layer and constituting a different part of the resonator, and a body. The resonator conductor layer is not directly connected to the second ground conductor layer.
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公开(公告)号：US10276913B2
公开(公告)日：2019-04-30
申请号：US15787061
申请日：2017-10-18
Applicant: TDK Corporation
Inventor： Tetsuzo Goto
IPC: H01P5/18
Abstract: The element body includes a main line; a first sub line and a second sub line; a pair of ground layers that are disposed to face each other at positions at which the main line, the first sub line, and the second sub line are interposed in a stacking direction of the plurality of insulator layers; a phase control circuit that is connected between the first sub line and the second sub line and is disposed at a position at which one ground layer is interposed between the first sub line and the second sub line in the stacking direction; and a connection line that connects the first sub line and the second sub line to the phase control circuit. The connection line is surrounded by at least one of one ground layer and a conductor having the same potential as the ground layer when viewed in the stacking direction.
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