Title:
MULTI-BAND FILTER
Document Type and Number:
WIPO Patent Application WO/2022/185504
Kind Code:
A1
Abstract:
A multi-band filter (1) is provided with a first filter (4) and a second filter (6) arranged in parallel with the first filter (4), wherein the first filter (4) includes: a grounded first ground conductor (17); a grounded second ground conductor (18); inductors (19-1 to 19-4) and capacitors (20-1 to 20-4) of a distributed constant circuit (21) provided between the first ground conductor (17) and the second ground conductor (18); and a first resonator (23-1), a second resonator (23-2), a third resonator (23-3), and a fourth resonator (23-4) which are configured by means of connection capacitors (22-1, 22-2, 24-1 to 24-3, 25-1 to 25-3, 26-1, 26-2) each having one terminal connected to the capacitors (20-1 to 20-4) and another terminal connected to the second ground conductor (18), and adjacent pairs of which are joined together by means of joining capacitors (27-1 to 27-3).
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Inventors:
ISHIBASHI HIDENORI (JP)
OSHIMA TAKESHI (JP)
OSHIMA TAKESHI (JP)
Application Number:
PCT/JP2021/008579
Publication Date:
September 09, 2022
Filing Date:
March 05, 2021
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H03H7/01
Foreign References:
| JP2004343390A | 2004-12-02 | |||
| JP2017163232A | 2017-09-14 | |||
| JP2006013989A | 2006-01-12 | |||
| JPS5461542U | 1979-04-28 | |||
| JP2013005121A | 2013-01-07 |
Attorney, Agent or Firm:
SANNO PATENT ATTORNEYS OFFICE (JP)
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