Title:
FILTER ELEMENT
Document Type and Number:
WIPO Patent Application WO/2019/235261
Kind Code:
A1
Abstract:
The filter element (101) is provided wit: a series-side inductor (L11, L12) connected in series to a signal path; a shunt-side inductor (L21, L22) shunt-connected between the signal path and the ground; and a capacitor (C1) connected in series to the shunt-side inductor (L21, L22). The shunt-side inductor (L21, L22) is constituted by a shunt-side first inductor (L21) and a shunt-side second inductor (L22) connected parallel to each other, and conductor patterns (31, 32) constituting the capacitor (C1) overlap with coil openings (CO1, CO2) of the series-side inductor (L11, L12) and the shunt-side inductor (L21, L22) when viewed from the lamination direction. The capacitor (C1) is sandwiched by the shunt-side first inductor (L21) and the shunt-side second inductor (L22) in the direction in which an insulator layer and the conductor patterns are laminated.
Inventors:
SHIGEMATSU SATOSHI (JP)
Application Number:
PCT/JP2019/020695
Publication Date:
December 12, 2019
Filing Date:
May 24, 2019
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H03H7/09; H01F17/00; H01F27/00
Domestic Patent References:
| WO2014115434A1 | 2014-07-31 | |||
| WO2016167171A1 | 2016-10-20 | |||
| WO2014141559A1 | 2014-09-18 |
Attorney, Agent or Firm:
KAEDE PATENT ATTORNEYS' OFFICE (JP)
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