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1. 发明公开

US20230253945A1 FILTER CIRCUIT AND MULTILAYERED FILTER DEVICE 审中-公开
公开(公告)号：US20230253945A1
公开(公告)日：2023-08-10
申请号：US18162155
申请日：2023-01-31
申请人： TDK CORPORATION
发明人： Masahiro TATEMATSU , Shuhei SAWAGUCHI , Yuta ASHIDA , Tetsuzo GOTO , Yoshinori MATSUMARU , Shigemitsu TOMAKI , Longfei YI
IPC分类号： H03H7/01 , H01F27/28 , H01F27/29 , H01G4/30 , H01G4/012
CPC分类号： H03H7/0115 , H03H7/0161 , H01F27/2804 , H01F27/292 , H01G4/30 , H01G4/012 , H01F2027/2809
摘要： 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.

2. 发明申请

US20200303798A1 MULTILAYERED FILTER DEVICE 审中-公开
公开(公告)号：US20200303798A1
公开(公告)日：2020-09-24
申请号：US16816929
申请日：2020-03-12
申请人： TDK CORPORATION
发明人： Yuta ASHIDA , Noriyuki HIRABAYASHI , Shigemitsu TOMAKI
IPC分类号： H01P1/205 , H03H7/01 , H01P1/203
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.

3. 发明申请

US20190252753A1 DIELECTRIC RESONATOR AND DIELECTRIC FILTER 审中-公开
公开(公告)号：US20190252753A1
公开(公告)日：2019-08-15
申请号：US16227558
申请日：2018-12-20
申请人： TDK CORPORATION
发明人： Yuta ASHIDA , Shigemitsu TOMAKI , Yousuke FUTAMATA , Shin TAKANE , Yasuharu MIYAUCHI , Kazunari KIMURA
IPC分类号： H01P1/20 , H01P1/30 , H01P7/10 , H01P11/00
摘要： 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.

4. 发明申请

US20190237838A1 DIELECTRIC FILTER 审中-公开
公开(公告)号：US20190237838A1
公开(公告)日：2019-08-01
申请号：US16223272
申请日：2018-12-18
申请人： TDK CORPORATION
发明人： Yuta ASHIDA , Noriyuki HIRABAYASHI , Shigemitsu TOMAKI
IPC分类号： H01P1/20 , H01P1/18 , H01P7/10 , H01P11/00
CPC分类号： H01P1/2002 , H01P1/182 , H01P7/10 , H01P11/007
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.

5. 发明申请

US20190007018A1 MULTILAYER ELECTRONIC COMPONENT 审中-公开
公开(公告)号：US20190007018A1
公开(公告)日：2019-01-03
申请号：US15980206
申请日：2018-05-15
申请人： TDK CORPORATION
发明人： Yuta ASHIDA , Noriyuki HIRABAYASHI , Shigemitsu TOMAKI
IPC分类号： H03H7/01 , H03H1/00 , H03H7/38
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.

6. 发明申请

US20170040661A1 DIRECTIONAL COUPLER 有权
标题翻译：方向耦合器
公开(公告)号：US20170040661A1
公开(公告)日：2017-02-09
申请号：US15206614
申请日：2016-07-11
申请人： TDK CORPORATION
发明人： Yuta ASHIDA , Yasunori SAKISAKA , Noriaki OOTSUKA , Tetsuzo GOTO , Takeshi KIJIMA
IPC分类号： H01P5/18 , H03H7/01
CPC分类号： H01P5/18 , H01P5/187 , H03H7/0115 , H03H2001/0078
摘要： 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.
摘要翻译：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。

7. 发明申请

US20220209380A1 BAND-PASS FILTER 有权
公开(公告)号：US20220209380A1
公开(公告)日：2022-06-30
申请号：US17556559
申请日：2021-12-20
申请人： TDK CORPORATION
发明人： Honoka ATSUCHI , Yuta ASHIDA , Longfei YI , Yoshinori MATSUMARU , Shuhei SAWAGUCHI , Masahiro TATEMATSU , Shigemitsu TOMAKI
IPC分类号： H01P1/20
摘要： 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.

8. 发明申请

US20210344320A1 BAND-PASS FILTER 有权
公开(公告)号：US20210344320A1
公开(公告)日：2021-11-04
申请号：US17242053
申请日：2021-04-27
申请人： TDK CORPORATION
发明人： Shuhei SAWAGUCHI , Yuta ASHIDA , Masahiro TATEMATSU , Yoshinori MATSUMARU , Shigemitsu TOMAKI
IPC分类号： H03H7/01
摘要： 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.

9. 发明申请

US20210328317A1 MULTILAYERED FILTER DEVICE 有权
公开(公告)号：US20210328317A1
公开(公告)日：2021-10-21
申请号：US17362140
申请日：2021-06-29
申请人： TDK CORPORATION
发明人： Yuta ASHIDA , Noriyuki HIRABAYASHI , Shigemitsu TOMAKI
IPC分类号： H01P1/203 , H01P1/205 , H03H7/01
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.

10. 发明申请

US20180226934A1 BAND-PASS FILTER 审中-公开
公开(公告)号：US20180226934A1
公开(公告)日：2018-08-09
申请号：US15877534
申请日：2018-01-23
申请人： TDK CORPORATION
发明人： Yuta ASHIDA , Naoki SOTOMA , Shigemitsu TOMAKI , Yasuyuki HIWATASHI
IPC分类号： H03H1/00 , H03H7/01
CPC分类号： H03H1/00 , H01P1/2088 , H03H7/01 , H03H2001/0021 , H04W84/042
摘要： A band-pass filter includes a main body formed of a dielectric, a plurality of resonators, a shield, and a partition formed of a conductor. Each of the plurality of resonators includes a resonator conductor portion. The resonator conductor portion has a first end and a second end opposite to each other in the longitudinal direction. The first end is connected to a ground, and the second end is open. The partition extends to pass through between the respective resonator conductor portions of two resonators, and is electrically connected to the shield.

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