公开(公告)号：US11431313B2

公开(公告)日：2022-08-30

申请号：US17239937

申请日：2021-04-26

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Shoma Yasuda ,  Hiroto Motoyama ,  Masayuki Kikuda

IPC: H03H7/01 ,  H03H7/46 ,  H01F27/29 ,  H03H1/00

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.

公开(公告)号：US12107312B2

公开(公告)日：2024-10-01

申请号：US17981603

申请日：2022-11-07

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Masayuki Kikuda

IPC: H01P1/208 ,  H01P1/20 ,  H01P1/205

CPC classification number: H01P1/2053 ,  H01P1/2002 ,  H01P1/2088

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.

公开(公告)号：US12206149B2

公开(公告)日：2025-01-21

申请号：US17825022

申请日：2022-05-26

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Masayuki Kikuda

IPC: H01P1/208 ,  H01P3/12 ,  H01P7/10 ,  H01P7/08

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.

公开(公告)号：US11588461B2

公开(公告)日：2023-02-21

申请号：US17865441

申请日：2022-07-15

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Shoma Yasuda ,  Hiroto Motoyama ,  Masayuki Kikuda

IPC: H03H7/01 ,  H03H7/46 ,  H01F27/29 ,  H03H1/00

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.

公开(公告)号：US10957958B2

公开(公告)日：2021-03-23

申请号：US16223359

申请日：2018-12-18

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Masayuki Kikuda ,  Hitoshi Tada

IPC: H01P1/20 ,  H01P7/10 ,  H01P1/205

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.

公开(公告)号：US09799939B2

公开(公告)日：2017-10-24

申请号：US14790405

申请日：2015-07-02

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Masayuki Kikuda ,  Hitoshi Tada ,  Yoshiki Yamada ,  Takahiro Okada

IPC: H01P3/06 ,  H01P1/205

CPC classification number: H01P1/2056

Abstract: A filtering device includes at least one dielectric resonant element, which includes a dielectric block, an outer conductor, and an inner conductor, a terminal disposed in a through hole of the dielectric resonant element from a front surface, a plate-shaped circuit element electrically coupled with the at least one dielectric resonant element via the terminal, and a substrate on which the at last one dielectric resonant element and the plate-shaped circuit element are mounted. The outer conductor is disposed so as to cover the back surface besides the peripheral surface of the dielectric block. The first end surface of the dielectric block includes a first electrode-free portion that electrically isolates the inner conductor from the outer conductor, and a second electrode-free portion that electrically isolates the inner conductor from the outer conductor.

公开(公告)号：US11742557B2

公开(公告)日：2023-08-29

申请号：US17724762

申请日：2022-04-20

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Masayuki Kikuda

IPC: H01P1/20

CPC classification number: H01P1/2002

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.

公开(公告)号：US11362406B2

公开(公告)日：2022-06-14

申请号：US17110386

申请日：2020-12-03

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Manabu Nakahori ,  Hiroshi Kojima ,  Masayuki Kikuda

IPC: H01P3/16 ,  H01P1/20 ,  H01P7/10

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.