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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
申请人： TDK CORPORATION
摘要： 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
申请人： TDK CORPORATION
摘要： 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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公开(公告)号：US09871500B2
公开(公告)日：2018-01-16
申请号：US15082513
申请日：2016-03-28
申请人： TDK CORPORATION
发明人： Masanori Tsutsumi , Kazuhiro Tsukamoto , Manabu Kitami , Toshiyuki Takami , Shohei Kusumoto , Noriyuki Hirabayashi
CPC分类号： H03H7/42
摘要： A multilayer electronic component includes a stack and a balun. The stack includes a plurality of stacked dielectric layers and conductor layers. The balun is formed using the stack. The balun includes an unbalanced transmission line and first to fourth balanced transmission lines. The unbalanced transmission line includes a first line portion and a second line portion connected in series. The first and second balanced transmission lines are configured to be electromagnetically coupled to the first line portion. The third and fourth balanced transmission lines are configured to be electromagnetically coupled to the second line portion.
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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
申请人： TDK CORPORATION
摘要： 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：US10658720B2
公开(公告)日：2020-05-19
申请号：US15980206
申请日：2018-05-15
申请人： TDK CORPORATION
摘要： 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：US11081767B2
公开(公告)日：2021-08-03
申请号：US16816929
申请日：2020-03-12
申请人： TDK CORPORATION
摘要： 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：US10950917B2
公开(公告)日：2021-03-16
申请号：US16351609
申请日：2019-03-13
申请人： TDK CORPORATION
摘要： A dielectric filter includes a plurality of dielectric resonators. The dielectric filter further includes a plurality of resonator bodies corresponding to the plurality of dielectric resonators, and a peripheral dielectric portion lying around the plurality of resonator bodies. Each of the plurality of resonator bodies is formed of a first dielectric having a first relative permittivity. The peripheral dielectric portion is formed of a second dielectric having a second relative permittivity lower than the first relative permittivity. Each of the plurality of resonator bodies includes a plurality of individual elements separated from each other.
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公开(公告)号：US10784551B2
公开(公告)日：2020-09-22
申请号：US16179059
申请日：2018-11-02
申请人： TDK CORPORATION
摘要： 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：US10749234B2
公开(公告)日：2020-08-18
申请号：US16179418
申请日：2018-11-02
申请人： TDK CORPORATION
摘要： A band-pass filter includes five resonators. The five resonators are configured so that capacitive coupling is established between every two of the resonators adjacent to each other in circuit configuration. The first stage resonator and the fifth stage resonator are magnetically coupled to each other. The second stage resonator and the fourth stage resonator are capacitively coupled to each other. Each of the five resonators includes a resonator conductor portion. The respective resonator conductor portions of the first and fifth stage resonators are physically adjacent to each other. The respective resonator conductor portions of the second and fourth stage resonators are physically adjacent to each other. The respective resonator conductor portions of the first and second stage resonators are physically adjacent to each other. The respective resonator conductor portions of the fourth and fifth stage resonators are physically adjacent to each other.
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公开(公告)号：US10461716B2
公开(公告)日：2019-10-29
申请号：US15956943
申请日：2018-04-19
申请人： TDK CORPORATION
摘要： A low-pass filter includes first and second input/output ports, first and second LC parallel resonators connected in series and provided between the first and second input/output ports, and first to third paths. The first path includes a first LC series resonator and connects a first end of the first LC parallel resonator closest to the first input/output port to a ground. The second path includes a second LC series resonator and connects a second end of the second LC parallel resonator closest to the second input/output port to the ground. The third path includes a third-path capacitor and connects a connection point between the first and second LC parallel resonators to the ground.
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