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公开(公告)号：US20240136995A1
公开(公告)日：2024-04-25
申请号：US18530295
申请日：2023-12-06
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Masayuki KIKUDA
CPC classification number: H03H7/0115 , H01F27/2804 , H01F27/40 , H01G4/30 , H01G4/40
Abstract: A filter device includes input and output terminals, first and second ground electrodes opposed to each other, and a resonator connected to one of the input and output terminals. The resonator includes a third ground electrode, and first, second, and third resonant portions. The third ground electrode is between and connected to the first and second ground electrodes. The first resonant portion is between the first and third ground electrodes, and connected to the third ground electrode and one of the input and output terminals. The second resonant portion is between the first and third ground electrodes, and connected to the third ground electrode. The third resonant portion is between the second and third ground electrodes, and connected to the third ground electrode.
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公开(公告)号：US20240235515A9
公开(公告)日：2024-07-11
申请号：US18530295
申请日：2023-12-06
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Masayuki KIKUDA
CPC classification number: H03H7/0115 , H01F27/2804 , H01F27/40 , H01G4/30 , H01G4/40
Abstract: A filter device includes input and output terminals, first and second ground electrodes opposed to each other, and a resonator connected to one of the input and output terminals. The resonator includes a third ground electrode, and first, second, and third resonant portions. The third ground electrode is between and connected to the first and second ground electrodes. The first resonant portion is between the first and third ground electrodes, and connected to the third ground electrode and one of the input and output terminals. The second resonant portion is between the first and third ground electrodes, and connected to the third ground electrode. The third resonant portion is between the second and third ground electrodes, and connected to the third ground electrode.
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公开(公告)号：US20220352864A1
公开(公告)日：2022-11-03
申请号：US17865441
申请日：2022-07-15
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Shoma YASUDA , Hiroto MOTOYAMA , Masayuki KIKUDA
Abstract: A resonant element includes first, second, and third plane electrodes, a first via electrode defining a first inductor, a second inductor, and a third inductor. The first via electrode connects the first plane electrode and the second plane electrode, and each of the second inductor and the third inductor connects the first plane electrode and the third plane electrode. The third plane electrode defines a first capacitor together with the second plane electrode, the second inductor includes second via electrodes, and the third inductor includes third via electrodes. Each of the second via electrodes and the third via electrodes is a columnar conductor extending in the extending direction of the first via electrode.
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公开(公告)号：US20230188110A1
公开(公告)日：2023-06-15
申请号：US18105298
申请日：2023-02-03
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Tetsuo TANIGUCHI , Masayuki KIKUDA
CPC classification number: H03H7/0115 , H03H7/0161 , H01F27/2804 , H01F27/292 , H01G4/30 , H01G4/012 , H01F2027/2809
Abstract: A filter device includes a dielectric substrate, first and second ground electrodes connected to a ground terminal, and resonators between the ground electrodes and electromagnetically coupled to each other. The ground electrodes are at different positions in a normal direction of the dielectric substrate. Each of the resonators includes a first capacitor electrode partially overlapping with the first ground electrode in plan view of the dielectric substrate, a second capacitor electrode partially overlapping with the second ground electrode in plan view of the dielectric substrate, and a via connecting the capacitor electrodes. The resonators include a first resonator connected to an input terminal, a second resonator connected to an output terminal, and a third resonator between the first and second resonators. Shunt electrodes are connected to the via and the ground terminal in the first and second resonators, respectively.
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公开(公告)号：US20190148805A1
公开(公告)日：2019-05-16
申请号：US16223359
申请日：2018-12-18
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Masayuki KIKUDA , Hitoshi TADA
Abstract: A dielectric resonator includes a dielectric block, an external conductor, and wall-surface conductors. The dielectric block has a rectangular parallelepiped shape including a first surface and a second surface opposed to each other. The dielectric block includes a through hole extending from the first surface to the second surface. The external conductor is disposed on an outer surface of the dielectric block. The wall-surface conductors are disposed on a wall surface defining the through hole. The wall-surface conductor includes a first portion of the through hole adjacent to the first surface and a second portion of the through hole adjacent to the second surface. The first and second portions of the wall-surface conductors are separated by a separation distance.
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Patent Agency Ranking
公开(公告)号：US20220285809A1
公开(公告)日：2022-09-08
申请号：US17825022
申请日：2022-05-26
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Masayuki KIKUDA
Abstract: A dielectric waveguide filter includes a dielectric plate including first and second principal surfaces facing each other and a side surface connecting outer edges of the first and second principal surfaces, a first surface conductor at the first principal surface, a second surface conductor at the second principal surface, a side conductor film inside the dielectric plate and connecting the first and second surface conductors, and an internal conductor extending in a perpendicular direction to the first principal surface and electrically connected to neither the first surface conductor nor the second surface conductor. Dielectric waveguide resonant spaces are surrounded by the first surface conductor, the second surface conductor, and the side conductor film.
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公开(公告)号：US20210091441A1
公开(公告)日：2021-03-25
申请号：US17110386
申请日：2020-12-03
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Manabu NAKAHORI , Hiroshi KOJIMA , Masayuki KIKUDA
Abstract: A dielectric waveguide filter includes at least four dielectric waveguide resonators arranged along a main coupling path for signal propagation, and main coupling portions each of which is provided between the dielectric waveguide resonators that are adjacent to each other along the main coupling path among the at least four dielectric waveguide resonators. The main coupling portions include an inductive coupling portion and a capacitive coupling portion, and the inductive coupling portion and the capacitive coupling portion are alternately and repeatedly arranged along the main coupling path.
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公开(公告)号：US20240030884A1
公开(公告)日：2024-01-25
申请号：US18376006
申请日：2023-10-03
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Masayuki KIKUDA
CPC classification number: H03H7/0161 , H03H7/0115 , H03H7/09
Abstract: A filter device includes a main body, a ground terminal, ground electrodes, resonators, and a via. The ground electrodes are at different positions in a normal direction of the main body. The resonators are between the ground electrodes and electromagnetically coupled to each other. Each of the resonators includes two capacitor electrodes connected by a via. When the main body is viewed in plan view, each of the capacitor electrodes overlaps a respective one of the ground electrodes. The resonators include first resonators respectively connected to an input terminal and an output terminal, and second resonators between the first resonators. The via is between the second resonators when the main body is viewed in plan view from the normal direction, and is connected to the ground electrodes.
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公开(公告)号：US20230055439A1
公开(公告)日：2023-02-23
申请号：US17981603
申请日：2022-11-07
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Masayuki KIKUDA
Abstract: A band pass filter includes a dielectric substrate, conductor plates, a ground via, waveguide resonators, and a trap resonator. The conductor plates are inside the dielectric substrate and opposed to each other. The ground via connects the conductor plates together. The waveguide resonators are coupled in series in a space between the conductor plates along a principal coupling path from an input terminal to an output terminal. Waveguide resonators adjacent along the principal coupling path are subjected to inductive coupling. The trap resonator couples waveguide resonators in two pairs included in the waveguide resonators as jumping over a portion of the principal coupling path, and capacitive couples the waveguide resonators included in each of the pairs.
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公开(公告)号：US20220247056A1
公开(公告)日：2022-08-04
申请号：US17724762
申请日：2022-04-20
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Masayuki KIKUDA
IPC: H01P1/20
Abstract: A dielectric waveguide filter includes resonators in a dielectric plate. A main coupling portion is between a final stage resonator of a first set and an initial stage resonator of a second set. A trap resonator is between a resonator that is one stage before the final stage resonator of the first set and a resonator that is one stage after the initial stage resonator of the second set, and the trap resonator is coupled to the final stage resonator of the first set and the initial stage resonator of the second set.
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