Title:
FILTER CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2021/251354
Kind Code:
A1
Abstract:
A filter circuit (1) comprises: a wiring pattern (5) provided on an upper wiring layer (2A) of a printed circuit board (2); a wiring pattern (11) provided on a lower wiring layer (2B) of the printed circuit board (2); a wiring pattern (12) extending from an end of the wiring pattern (11); a wiring pattern (6) provided partly opposite the wiring pattern (5) on the upper wiring layer (2A); a bypass capacitor (16) provided on the upper wiring layer (2A) and connected to the wiring pattern (12) and a ground conductor surface (3); a via (4a) connecting the end of the wiring pattern (5) and the wiring pattern (11); and a via (4d) connecting the wiring pattern (12) and the wiring pattern (6). A structure including the wiring pattern (5), the via (4a), and the wiring pattern (11) opposes a structure including the via (4a) and the wiring pattern (6).
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Inventors:
NAKAMOTO FUJIYUKI (JP)
Application Number:
PCT/JP2021/021653
Publication Date:
December 16, 2021
Filing Date:
June 08, 2021
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H05K1/02; H05K3/46
Foreign References:
| JP2017034115A | 2017-02-09 | |||
| JP2013077663A | 2013-04-25 | |||
| JP2000349443A | 2000-12-15 | |||
| JP2009135815A | 2009-06-18 |
Attorney, Agent or Firm:
SANNO PATENT ATTORNEYS OFFICE (JP)
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