Title:
LC FILTER
Document Type and Number:
WIPO Patent Application WO/2017/199745
Kind Code:
A1
Abstract:
Provided is an LC filter in which an attenuation pole is formed near a pass band and in which impedance matching between input and output is performed. The LC filter is provided with an input terminal 1, an output terminal 2, a signal line 3, a first LC series resonator LC1, and a second LC series resonator LC2. The first LC series resonator LC1 has an inductor L1 and a capacitor C1 connected in series, and the second LC series resonator LC2 has an inductor L2 and a capacitor C2 connected in series. The first LC series resonator LC1 is connected between the signal line and the ground. The second LC series resonator LC2 is connected between the signal line and a point at which the inductor L1 and the capacitor C1 of the first LC series resonator LC1 are connected to each other.
Inventors:
SHIOKAWA NOBORU (JP)
Application Number:
PCT/JP2017/017124
Publication Date:
November 23, 2017
Filing Date:
May 01, 2017
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H03H7/075; H01F17/00; H01F27/00; H03H7/09
Domestic Patent References:
| WO2014192431A1 | 2014-12-04 |
Foreign References:
| JP2006287577A | 2006-10-19 | |||
| JP2007123993A | 2007-05-17 | |||
| JP2011130083A | 2011-06-30 | |||
| JP2006203862A | 2006-08-03 | |||
| JP2015111784A | 2015-06-18 |
Attorney, Agent or Firm:
KAWAMOTO, Takashi (JP)
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