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公开(公告)号：US11522259B2
公开(公告)日：2022-12-06
申请号：US17362140
申请日：2021-06-29
Applicant: TDK CORPORATION
Inventor： Yuta Ashida , Noriyuki Hirabayashi , Shigemitsu Tomaki
Abstract: A multilayered filter device includes a multilayer stack, a band pass filter, a first band elimination filter, and a second band elimination filter. The band pass filter and the first and second band elimination filters are each constructed using the multilayer stack. The band pass filter includes a plurality of first resonators with open ends. Each band elimination filter includes a connection path, and a second resonator coupled to the connection path. The connection path includes an impedance transformer. The second resonator includes a conductor line constituting a distributed constant line.
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公开(公告)号：US11476822B2
公开(公告)日：2022-10-18
申请号：US17242053
申请日：2021-04-27
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：US10727557B2
公开(公告)日：2020-07-28
申请号：US16227558
申请日：2018-12-20
Applicant: TDK CORPORATION
Inventor： Yuta Ashida , Shigemitsu Tomaki , Yousuke Futamata , Shin Takane , Yasuharu Miyauchi , Kazunari Kimura
Abstract: A dielectric filter includes a plurality of dielectric resonators. The dielectric filter also includes: a plurality of resonator body portions each formed of a first dielectric and respectively corresponding to the plurality of dielectric resonators, the first dielectric having a first relative permittivity; a peripheral dielectric portion formed of a second dielectric and lying around the plurality of resonator body portions, the second dielectric having a second relative permittivity lower than the first relative permittivity; and a shield portion formed of a conductor. Either one of a temperature coefficient of resonant frequency of the first dielectric at 25° C. to 85° C. and a temperature coefficient of resonant frequency of the second dielectric at 25° C. to 85° C. has a positive value and the other has a negative value.
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公开(公告)号：US10658720B2
公开(公告)日：2020-05-19
申请号：US15980206
申请日：2018-05-15
Applicant: TDK CORPORATION
Inventor： Yuta Ashida , Noriyuki Hirabayashi , Shigemitsu Tomaki
Abstract: A multilayer electronic component includes a multilayer stack, and a band elimination filter formed using the multilayer stack. The band elimination filter includes a first input/output end, a second input/output end, a connection path connecting the first and second input/output ends, and a resonator coupled to the connection path. The connection path includes an impedance transformer. The resonator includes a first conductor line constituting a first distributed constant line. The impedance transformer includes a second conductor line constituting a second distributed constant line, and a through hole line section connected in series to the second conductor line.
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公开(公告)号：US11955681B2
公开(公告)日：2024-04-09
申请号：US17556559
申请日：2021-12-20
Applicant: TDK CORPORATION
Inventor： Honoka Atsuchi , Yuta Ashida , Longfei Yi , Yoshinori Matsumaru , Shuhei Sawaguchi , Masahiro Tatematsu , Shigemitsu Tomaki
IPC: H01P1/20
CPC classification number: H01P1/20
Abstract: A band-pass filter includes a first input/output port, a second input/output port, a plurality of resonators, and a multilayer stack. The multilayer stack includes a plurality of stacked dielectric layers. Each of the resonators is an open-ended resonator formed of a conductor line in the multilayer stack. Each of the resonators includes a resonator conductor portion including a first line part and a second line part located away from each other in a direction orthogonal to a stacking direction of the plurality of dielectric layers, and a third line part connecting the first line part and the second line part. The first to third line parts extend to surround a space between the first line part and the second line part.
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Patent Agency Ranking
公开(公告)号：US11283147B2
公开(公告)日：2022-03-22
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：US09647316B2
公开(公告)日：2017-05-09
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 {XBaO.(1−X)SrO}TiO2 (0.25
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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：US10957959B2
公开(公告)日：2021-03-23
申请号：US16552015
申请日：2019-08-27
Applicant: TDK CORPORATION
Inventor： Yuta Ashida , Noriyuki Hirabayashi , Shigemitsu Tomaki
Abstract: A band-pass filter includes first to sixth stage resonators. Each resonator includes a resonator conductor portion formed of a conductor line. The resonator conductor portion has a first end and a second end which are opposite ends of the conductor line. The resonator conductor portion of each of the first and sixth stage resonators includes a narrow portion, a first wide portion located between the narrow portion and the first end, and a second wide portion located between the narrow portion and the second end. Each of the first and sixth stage resonators is lower in unloaded Q than the other resonators.
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公开(公告)号：US10854939B2
公开(公告)日：2020-12-01
申请号：US16223272
申请日：2018-12-18
Applicant: TDK CORPORATION
Inventor： Yuta Ashida , Noriyuki Hirabayashi , Shigemitsu Tomaki
Abstract: A dielectric filter has a first input/output port, a second input/output port, an even number of dielectric resonators, and a capacitor for capacitively coupling the first input/output port and the second input/output port. The even number of dielectric resonators are provided between the first input/output port and the second input/output port in circuit configuration, and are configured so that two dielectric resonators adjacent to each other in circuit configuration are magnetically coupled to each other.
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