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公开(公告)号：US20230130049A1
公开(公告)日：2023-04-27
申请号：US17968214
申请日：2022-10-18
Applicant: TDK CORPORATION
Inventor： Longfei YI , Shigemitsu TOMAKI
Abstract: A filter device includes first to third resonators. Each of the first to third resonators includes a first line part and a second line part electrically connected to the first line part and having an impedance smaller than an impedance of the first line part. The impedance ratio in at least one of the first to third resonators is 0.3 or smaller. The shape of each of the second line part of the first resonator and the second line part of the second resonator is long in a direction orthogonal to a stacking direction and crossing the longitudinal direction of the second line part of the third resonator.
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公开(公告)号：US20230127771A1
公开(公告)日：2023-04-27
申请号：US17968270
申请日：2022-10-18
Applicant: TDK CORPORATION
Inventor： Longfei YI , Shigemitsu TOMAKI
Abstract: A filter device includes a stack including a plurality of dielectric layers stacked together, and first to third resonators integrated with the stack. Each of the first to third resonators includes a first conductor part and a second conductor part electrically connected to the first conductor part and having an impedance smaller than an impedance of the first conductor part. The first conductor part and the second conductor part are arranged at positions different from each other in a stacking direction.
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公开(公告)号：US20210234249A1
公开(公告)日：2021-07-29
申请号：US17155789
申请日：2021-01-22
Applicant: TDK CORPORATION
Inventor： Yuta ASHIDA , Masahiro TATEMATSU , Shuhei SAWAGUCHI , Shigemitsu TOMAKI
IPC: H01P5/18
Abstract: A directional coupler includes first to fourth terminals, a first line, a second line, a ground conductor portion, and a stack. The first line includes a first center portion, a first connecting portion, and a second connecting portion. The second line includes a second center portion, a third connecting portion, and a fourth connecting portion. A distance between the first and third connecting portions and a distance between the second and fourth connecting portions decrease toward the first and second center portions. The first to fourth terminals are located on a bottom surface of the stack.
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公开(公告)号：US20160013537A1
公开(公告)日：2016-01-14
申请号：US14789294
申请日：2015-07-01
Applicant: TDK CORPORATION
Inventor： Toshio SAKURAI , Kiyoshi HATANAKA , Takashi FUKUI , Shigemitsu TOMAKI
Abstract: A transmission line and an electronic component including a resonator using the transmission line are provided. The transmission line is capable of transmitting electromagnetic waves of at least one frequency ranging from 1 GHz to 10 GHz and is composed of a first dielectric with a first relative permittivity and a surrounding dielectric portion composed of a second dielectric with a second relative permittivity, wherein, the first dielectric is represented by a formula of {XBa·(1-X)SrO}TiO2 (0.25
Abstract translation: 提供一种传输线和包括使用传输线的谐振器的电子部件。 传输线能够发射1GHz至10GHz范围内的至少一个频率的电磁波，并且由具有第一相对介电常数的第一电介质和由具有第二相对介电常数的第二电介质构成的周围电介质部分组成，其中 第一电介质由{XBa·（1-X）SrO} TiO 2（0.25
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公开(公告)号：US20240022225A1
公开(公告)日：2024-01-18
申请号：US18303048
申请日：2023-04-19
Applicant: TDK CORPORATION
Inventor： Longfei YI , Shigemitsu TOMAKI
IPC: H03H7/01
CPC classification number: H03H7/0115 , H03H7/1741 , H03H7/1708 , H03H2001/0085
Abstract: An electronic component includes: a first conductor extending in one direction; a second conductor extending in the one direction; a first inductor conductor bridged so as to linearly extend between an end portion of the first conductor in its extending direction and an end portion of the second conductor in its extending direction; a connecting conductor that extends in the one direction and has a first end portion and a second end portion in its extending direction, the first end portion being connected to the first inductor conductor and being located between the first conductor and the second conductor; and a capacitor pad electrically connected to the second end portion of the connecting conductor.
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Patent Agency Ranking
公开(公告)号：US20230143899A1
公开(公告)日：2023-05-11
申请号：US17979884
申请日：2022-11-03
Applicant: TDK CORPORATION
Inventor： Longfei YI , Shigemitsu TOMAKI
IPC: H01P1/203
CPC classification number: H01P1/20309 , H01P1/20372 , H01P7/08
Abstract: A filter includes first and second resonators and first and second stub resonators. Each of the first and second resonators includes a first conductor part and a second conductor part electrically connected to the first conductor part and having an impedance smaller than an impedance of the first conductor part. The first stub resonator is electrically connected to the first conductor part of the first resonator. The second stub resonator is electrically connected to the first conductor part of the second resonator. The shape of the first stub resonator and the shape of the second stub resonator are different from each other.
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公开(公告)号：US20190198959A1
公开(公告)日：2019-06-27
申请号：US16179059
申请日：2018-11-02
Applicant: TDK CORPORATION
Inventor： Yuta ASHIDA , Noriyuki HIRABAYASHI , Shigemitsu TOMAKI
Abstract: A band-pass filter includes a main body, five resonators, a shield, and a partition. The main body is formed of a dielectric. The partition is formed of a conductor. The five resonators are configured so that capacitive coupling is established between every two of the resonators adjacent to each other in circuit configuration. Each of the five resonators includes a resonator conductor portion. A first stage resonator and a fifth stage resonator are magnetically coupled to each other although not adjacent to each other in circuit configuration. The partition extends to pass between the respective resonator conductor portions of the first stage resonator and the fifth stage resonator, and is electrically connected to the shield.
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公开(公告)号：US20230246621A1
公开(公告)日：2023-08-03
申请号：US18161286
申请日：2023-01-30
Applicant: TDK CORPORATION
Inventor： Shuhei SAWAGUCHI , Masahiro TATEMATSU , Yuta ASHIDA , Tetsuzo GOTO , Yoshinori MATSUMARU , Shigemitsu TOMAKI , Longfei YI
CPC classification number: H03H7/0115 , H03H7/0161 , H01F27/2804 , H01F27/29 , H01F27/40 , H01G4/30 , H01G4/01 , H01F2027/2809
Abstract: A filter circuit includes a pair of balanced input ports, a pair of balanced output ports, and first and second resonators provided in parallel between the pair of balanced input ports and the pair of balanced output ports in a circuit configuration, the first and second resonators being magnetically coupled to each other. Between the first resonator and the second resonator, a capacitor is present but no inductor is present in the circuit configuration.
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公开(公告)号：US20220416754A1
公开(公告)日：2022-12-29
申请号：US17902256
申请日：2022-09-02
Applicant: TDK CORPORATION
Inventor： Shuhei SAWAGUCHI , Yuta ASHIDA , Masahiro TATEMATSU , Yoshinori MATSUMARU , Shigemitsu TOMAKI
Abstract: A band-pass filter includes an unbalanced port, a first balanced port, a second balanced port, and first to third resonators provided between the unbalanced port and the first and second balanced ports. The second resonator and the third resonator each are a resonator with both ends open. The second resonator and the third resonator are adjacent to each other in a circuit configuration, and electromagnetically coupled by magnetic coupling as main coupling. The first resonator is provided closer to the second resonator than to the third resonator, and jump-coupled to the third resonator.
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公开(公告)号：US20210242852A1
公开(公告)日：2021-08-05
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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