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公开(公告)号：US20230253945A1
公开(公告)日：2023-08-10
申请号：US18162155
申请日：2023-01-31
Applicant: TDK CORPORATION
Inventor： Masahiro TATEMATSU , Shuhei SAWAGUCHI , Yuta ASHIDA , Tetsuzo GOTO , Yoshinori MATSUMARU , Shigemitsu TOMAKI , Longfei YI
CPC classification number: H03H7/0115 , H03H7/0161 , H01F27/2804 , H01F27/292 , H01G4/30 , H01G4/012 , H01F2027/2809
Abstract: A filter circuit includes a pair of balanced input ports, a pair of balanced output ports, 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, a first capacitor connected in parallel to the first resonator, and a second capacitor connected in parallel to the second resonator. The first and second resonators are magnetically coupled to each other and electrically connected to each other. The first and second capacitors are not electrically connected to ground.
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公开(公告)号：US20200303798A1
公开(公告)日：2020-09-24
申请号：US16816929
申请日：2020-03-12
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：US20190252753A1
公开(公告)日：2019-08-15
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：US20190237838A1
公开(公告)日：2019-08-01
申请号：US16223272
申请日：2018-12-18
Applicant: TDK CORPORATION
Inventor： Yuta ASHIDA , Noriyuki HIRABAYASHI , Shigemitsu TOMAKI
CPC classification number: H01P1/2002 , H01P1/182 , H01P7/10 , H01P11/007
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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公开(公告)号：US20190007018A1
公开(公告)日：2019-01-03
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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Patent Agency Ranking
公开(公告)号：US20170040661A1
公开(公告)日：2017-02-09
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 portions that overlap each other when viewed in the stacking direction of the stack.
Abstract translation: 定向耦合器包括：第一至第四端口; 连接第一和第二端口的主线; 电磁耦合到主线的第一至第四子线段; 第一到第三匹配部分; 和堆栈。 在第三和第四端口之间按顺序排列第一子线，第一匹配，第三子线，第三匹配，第四子线，第二匹配和第二子线部分。 第一和第二匹配部分包括连接位于匹配部分的相对侧上的两个子线部分的电感器。 用于形成电感器的一个或多个导体层中的每一个包括用于电连接到相应的其它元件的两个连接部分和连接两个连接部分的线路部分。 除了连接部分之外的电感器不包括当从堆叠的层叠方向观察时彼此重叠的部分。
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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：US20230187821A1
公开(公告)日：2023-06-15
申请号：US18051946
申请日：2022-11-02
Applicant: TDK Corporation
Inventor： Yasuyuki HARA , Yutaka UI , Yuta ASHIDA
CPC classification number: H01Q1/422 , H01Q1/38 , H01Q5/371 , H01Q15/0026 , H01Q1/2283
Abstract: Disclosed herein is an antenna device that includes a filter layer, an antenna layer, a divider layer, and ground patterns. The antenna layer has first and second radiation conductors and first and second ground pillars that surround the first and second radiation conductors, respectively. Each of the first and second ground patterns has a first area that overlaps a first space surrounded by the first ground pillars, a second area that overlaps a second space surrounded by the plurality of second ground pillars, and a third area that connects the first and second areas. A width of the third area in a width direction perpendicular to an arrangement direction of the first and second areas is smaller than a width of each of the first and second areas in the width direction.
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公开(公告)号：US20230060223A1
公开(公告)日：2023-03-02
申请号：US17900155
申请日：2022-08-31
Applicant: TDK Corporation
Inventor： Yasuyuki HARA , Yuta ASHIDA
IPC: H01Q9/04
Abstract: Disclosed herein is an antenna module that includes first and second signal pads, an antenna element, and first and second filters. The first signal pad is coupled to the antenna element through the first to fourth conductor patterns of the first filter. The second signal pad is coupled to the antenna element through the fifth to eighth conductor patterns of the first filter. The second, third, sixth and seventh conductor patterns extend along the diagonal line of the antenna element. The second and sixth conductor patterns face each other with the diagonal line interposed therebetween. The third and seventh conductor patterns face each other with the diagonal line interposed therebetween. The first, fourth, fifth and eighth conductor patterns extend in the second direction, respectively with respect to the second, third, sixth and seventh conductor patterns.
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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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