Title:
LC FILTER, HIGH FREQUENCY FRONT END CIRCUIT, AND COMMUNICATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/043206
Kind Code:
A1
Abstract:
A frequency variable type LC filter (1A) is provided with: a multilayer substrate; a serial arm capacitor (11) that is formed in the multilayer substrate and is disposed on a serial arm path connecting an input electrode with an output electrode; and a parallel arm inductor (21) that is formed in the multilayer substrate and is disposed on a parallel arm path connecting a node (N1) on the serial arm path with a ground electrode. When the multilayer substrate is seen in plan view, among the serial arm capacitor (11) and the parallel arm inductor (21), only the parallel arm inductor (21) overlaps the ground electrode.
Inventors:
MORI HIROTSUGU (JP)
Application Number:
PCT/JP2017/029927
Publication Date:
March 08, 2018
Filing Date:
August 22, 2017
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H03H7/075; H03H7/12; H04B1/52
Domestic Patent References:
| WO2013005264A1 | 2013-01-10 | |||
| WO2016125515A1 | 2016-08-11 | |||
| WO2016030942A1 | 2016-03-03 |
Foreign References:
| JP2015508621A | 2015-03-19 | |||
| JP2005136888A | 2005-05-26 | |||
| JP2008271421A | 2008-11-06 |
Attorney, Agent or Firm:
YOSHIKAWA, Shuichi et al. (JP)
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