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Patent Searching and Data


Title:
MULTI-BAND FILTER
Document Type and Number:
WIPO Patent Application WO/2018/087802
Kind Code:
A1
Abstract:
Provided is a multi-band filter (100) that can form a passband and ensure attenuation in a suppression band outside the passband, by being equipped with: a printed substrate (10); a first filter (20); a second filter (30) having external dimensions different from those of the first filter (20) and a high passband frequency; an input terminal (61); an output terminal (62); a first inductor (50); a first capacitor (40); and a signal line conductor pattern (13) that connects the first filter (20), the input terminal (61), the output terminal (62), and the first inductor (50) to form a first transmission line, that connects the second filter (30), the input terminal (61), the output terminal (62), and the first capacitor (40) to form a second transmission line, and that is disposed in a region on the printed substrate (10) in which a portion of a section belonging to the first transmission line is formed by the difference between the external dimensions of the first filter (20) and the second filter (30).

Inventors:
YUASA, Takeshi (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
OSHIMA, Takeshi (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
AOYAMA, Hiroyuki (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
Application Number:
JP2016/083052
Publication Date:
May 17, 2018
Filing Date:
November 08, 2016
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORPORATION (7-3 Marunouchi 2-chome, Chiyoda-ku Tokyo, 10, 〒1008310, JP)
International Classes:
H03H7/01; H03H7/38; H03H7/46; H03H9/72
Foreign References:
JP2001345601A2001-12-14
JPH0372701A1991-03-27
JPH09121138A1997-05-06
JP2004096399A2004-03-25
Other References:
See also references of EP 3503390A4
Attorney, Agent or Firm:
INABA, Tadahiko et al. (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
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