Title:
FILTER DEVICE AND HIGH-FREQUENCY FRONT END CIRCUIT PROVIDED THEREWITH
Document Type and Number:
WIPO Patent Application WO/2022/071191
Kind Code:
A1
Abstract:
A filter device (100) is provided with: a body (110); a ground terminal (GND); and a plurality of resonators (RC1-RC4). The plurality of resonators are disposed in the body and are electromagnetically coupled to each other. The plurality of resonators include a resonator (RC1) which is connected to an input terminal (T1), a resonator (RC2) which is connected to an output terminal (T2), a resonator (RC3), and a resonator (RC4). The resonator (RC2) is disposed adjacent to the resonator (RC1) in a first direction. The resonator (RC3) is disposed adjacent to the resonator (RC1) in a second direction orthogonal to the first direction. The resonator (RC4) is disposed adjacent to the resonator (RC3) in the first direction. A portion of the path connecting the resonator (RC3) and the resonator (RC4) to the ground terminal (GND) is shared.
Inventors:
OGAWA KEISUKE (JP)
Application Number:
PCT/JP2021/035278
Publication Date:
April 07, 2022
Filing Date:
September 27, 2021
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H01F17/00; H01F27/00; H01G4/40; H01P1/20; H01P7/00; H03H7/075; H03H7/09
Domestic Patent References:
| WO2012077498A1 | 2012-06-14 | |||
| WO2019097774A1 | 2019-05-23 | |||
| WO2012066873A1 | 2012-05-24 |
Foreign References:
| JPS6376313A | 1988-04-06 |
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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