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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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公开(公告)号：US20190326654A1
公开(公告)日：2019-10-24
申请号：US16351609
申请日：2019-03-13
Applicant: TDK CORPORATION
Inventor： Yuta ASHIDA , Noriyuki HIRABAYASHI , Shigemitsu TOMAKI
Abstract: 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：US20190199313A1
公开(公告)日：2019-06-27
申请号：US16179418
申请日：2018-11-02
Applicant: TDK CORPORATION
Inventor： Yuta ASHIDA , Noriyuki HIRABAYASHI , Shigemitsu TOMAKI
Abstract: 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：US20170214109A1
公开(公告)日：2017-07-27
申请号：US15367578
申请日：2016-12-02
Applicant: TDK CORPORATION
Inventor： Yuta ASHIDA , Noriaki OOTSUKA , Takeshi KIJIMA , Yasunori SAKISAKA , Tetsuzo GOTO
Abstract: A directional coupler includes a first to a fourth port, a main line connecting the first port and the second port, a first and a second subline section configured to be electromagnetically coupled to the main line, and a phase shifter. The first subline section, the phase shifter, and the second subline section are arranged in this order in series between the third port and the fourth port. The phase shifter outputs a signal that is phase-delayed relative to an input signal. The phase delay amount of the output signal of the phase shifter relative to the input signal increases with increasing frequency of the input signal. A frequency twice as high as the frequency of the input signal at which the phase delay amount is 90 degrees is lower than the frequency of the input signal at which the phase delay amount is 180 degrees.
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公开(公告)号：US20240072754A1
公开(公告)日：2024-02-29
申请号：US18456835
申请日：2023-08-28
Applicant: TDK CORPORATION
Inventor： Masahiro TATEMATSU , Yuta ASHIDA , Shuhei SAWAGUCHI , Keigo SHIBUYA , Tomonori TERUI , Tetsuzo GOTO
IPC: H03H7/01
CPC classification number: H03H7/1775 , H03H7/0115 , H03H2001/0085
Abstract: In a multilayer filter, first and second resonant circuits are arranged in a direction crossing a stacking direction of a plurality of dielectric layers. An input/output portion includes an input/output port group including an unbalanced port and a pair of balanced ports or an input/output port group including two pairs of balanced ports. The second resonant circuit includes an inductor conductor, a first capacitor conductor, and a second capacitor conductor. The inductor conductor includes first and second ends. The first capacitor conductor is connected to the first end. The second capacitor conductor is connected to the second end. The second dielectric layer has a dielectric constant lower than that of the first dielectric layer. The first and second capacitor conductors are provided in the first dielectric layer. At least a part of the inductor conductor is provided in the second dielectric layer.
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Patent Agency Ranking
公开(公告)号：US20230387583A1
公开(公告)日：2023-11-30
申请号：US18449297
申请日：2023-08-14
Applicant: TDK Corporation
Inventor： Yasuyuki HARA , Yutaka UI , Yuta ASHIDA
CPC classification number: H01Q1/422 , H01Q15/0026 , H01Q1/2283 , H01Q5/371 , H01Q1/38
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：US20230307810A1
公开(公告)日：2023-09-28
申请号：US18189417
申请日：2023-03-24
Applicant: TDK CORPORATION
Inventor： Yuta ASHIDA , Masahiro TATEMATSU , Shuhei SAWAGUCHI , Kenichi TEZUKA , Aozora KAWASAKI , Tetsuzo GOTO , Tomoyuki GOI
IPC: H01P1/20
Abstract: A filter includes a first port, a second port, a path, a circuit part, and at least one cavity resonator. The path connects the first port and the second port. The circuit part is provided in the path. Each of the at least one cavity resonator is coupled with the path from an outside of the path in a circuit configuration. The first cavity resonator is coupled with the path between the first port and the circuit part. The second cavity resonator is coupled with the path between the second port and the circuit part.
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公开(公告)号：US20230282954A1
公开(公告)日：2023-09-07
申请号：US18175098
申请日：2023-02-27
Applicant: TDK CORPORATION
Inventor： Yuta ASHIDA , Masahiro Tatematsu , Shuhei Sawaguchi , Keigo Shibuya , Tetsuzo Goto
Abstract: A filter circuit includes two ports, a first resonant circuit, and a second resonant circuit. The first resonant circuit is provided between the two ports in a circuit configuration and coupled with both of the two ports. The second resonant circuit is provided between the two ports in the circuit configuration and coupled with at least one of the two ports. Coupling of the second resonant circuit and the two ports is weaker than coupling of the first resonant circuit and the two ports.
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公开(公告)号：US20220294410A1
公开(公告)日：2022-09-15
申请号：US17686071
申请日：2022-03-03
Applicant: TDK CORPORATION
Inventor： Takuya SATO , Yuta ASHIDA
Abstract: A band-pass filter includes a first input/output port, a second input/output port, a first high-pass filter, a first low-pass filter, and a first stub resonator. The first stub resonator includes a first distributed constant line. The first low-pass filter is provided between the first input/output port and the first high-pass filter in the circuit configuration. The first distributed constant line has a first end connected to a first path connecting the first input/output port and the first low-pass filter, and a second end closest to a ground in the circuit configuration.
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公开(公告)号：US20200161767A1
公开(公告)日：2020-05-21
申请号：US16688649
申请日：2019-11-19
Applicant: TDK Corporation
Inventor： Yasuyuki HARA , Yuta ASHIDA
Abstract: Disclosed herein is an antenna module that includes a circuit layer having a filter circuit, an antenna layer having a radiation conductor, a wiring layer having a connection wiring, a first ground pattern provided on a surface of the circuit layer, a second ground pattern provided between the circuit layer and the wiring layer, a third ground pattern provided between the wiring layer and the antenna layer, and a signal terminal provided on the surface of the circuit layer where the first ground pattern is cut away. The clearance region is located so as not to overlap the filter circuit as viewed in a lamination direction. The signal terminal is connected to the filter circuit through a pillar conductor penetrating the circuit layer and the connection wiring. The radiation conductor receives power through a feed pattern connected to the filter circuit.
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