Title:
FILTER AND FILTER MODULE
Document Type and Number:
WIPO Patent Application WO/2023/058675
Kind Code:
A1
Abstract:
A filter module (1) is provided with an antenna connection terminal (Pant), filter elements (11, 12), and inductors (31, 32). The filter elements (11, 12) connect to the antenna connection terminal (Pant). The inductor (31) is connected between the antenna connection terminal (Pant) and the filter elements (11, 12). The inductor (32) is connected between a ground reference potential and a transmission line that connects the inductor (31) and the filter elements (11, 12). The filter elements (11, 12) are disposed on an insulated multilayer substrate (90). The inductors (31, 32) are formed of electrodes formed on the multilayer substrate (90). Inductor electrodes (313, 314) forming the inductor (31) and an opening in the center of a winding thereof are disposed at a location different from another electrode formed in the interior of the multilayer substrate (90).
Inventors:
OZASA MOTOKI (JP)
Application Number:
PCT/JP2022/037210
Publication Date:
April 13, 2023
Filing Date:
October 05, 2022
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H03H7/01; H01F17/00; H01F27/00; H01F27/28; H03H7/38; H03H7/46
Foreign References:
| JP2009218756A | 2009-09-24 | |||
| JP2010141859A | 2010-06-24 | |||
| JP2015109320A | 2015-06-11 |
Attorney, Agent or Firm:
KAEDE PATENT ATTORNEYS' OFFICE (JP)
Download PDF: