Title:
FILTER DEVICE AND HIGH FREQUENCY FRONT END CIRCUIT EQUIPPED WITH SAME
Document Type and Number:
WIPO Patent Application WO/2022/270185
Kind Code:
A1
Abstract:
A filter device (100) is provided with an input terminal (TA), ground electrodes (PG1, PG2) opposing each other, and filters (FLT1, FLT2) connected to the input terminal (TA). The filter (FLT1) has a first pass-band. The filter (FLT2) has a second pass-band higher than the first pass-band. Each of the filters (FLT1, FLT2) includes a plurality of stages of resonators disposed between the ground electrode (PG1) and the ground electrode (PG2). The first stage of resonator (RCL1) of the filter (FLT1) includes a capacitor (C11) connected to the ground electrode (PG2), and an inductor (L11) connected between the capacitor (C11) and the ground electrode (PG1). The first stage of resonator (RCH1) of the filter (FLT2) includes a capacitor (C31) connected between the input terminal (TA) and the ground electrode (PG2), and an inductor (L31) connected between the capacitor (C31) and the ground electrode (PG2).
Inventors:
TERAMOTO MASAHIRO (JP)
Application Number:
PCT/JP2022/020811
Publication Date:
December 29, 2022
Filing Date:
May 19, 2022
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H03H7/09; H01F27/00; H01G4/40
Domestic Patent References:
| WO2021029154A1 | 2021-02-18 |
Foreign References:
| JP2001144566A | 2001-05-25 | |||
| JP2001136045A | 2001-05-18 |
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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