Title:
BAND-PASS FILTER
Document Type and Number:
WIPO Patent Application WO/2019/102830
Kind Code:
A1
Abstract:
In the present invention, an attenuation pole is formed in the vicinity of a desired frequency lower than the pass band of a band-pass filter, and an attenuation pole is formed in the vicinity of a desired frequency higher than the pass band. In a band-pass filter (100) according to an embodiment of the present invention, a signal inputted to a first terminal (P1) is transmitted sequentially to a first LC resonator (101) and a second LC resonator (102), and is outputted from a second terminal (P2). The band-pass filter (100) is provided with a third inductor (13) and a third capacitor (23). One end of the third inductor (13) is grounded. The third capacitor (23) is connected between the other end of the third inductor (13) and a connection point (CP) of the first LC resonator (101) and the second LC resonator (102).
More Like This:
| WO/2014/207300 | METHODS AND APPARATUS FOR SIGNAL FILTERING |
Inventors:
TANIGUCHI TETSUO (JP)
Application Number:
PCT/JP2018/041003
Publication Date:
May 31, 2019
Filing Date:
November 05, 2018
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H03H7/01; H03H7/075; H03H7/09
Domestic Patent References:
| WO2017014058A1 | 2017-01-26 | |||
| WO2016125515A1 | 2016-08-11 | |||
| WO2016167171A1 | 2016-10-20 |
Foreign References:
| JP2016092525A | 2016-05-23 | |||
| JPS6113706A | 1986-01-22 | |||
| JPH10200357A | 1998-07-31 | |||
| JP2002094349A | 2002-03-29 | |||
| JP2011147090A | 2011-07-28 |
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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