Title:
MULTIPLEXER
Document Type and Number:
WIPO Patent Application WO/2018/123545
Kind Code:
A1
Abstract:
Provided is a multiplexer (1) which is connected to a ladder filter through a common terminal (20) and is capable of improving transmission characteristics of a filter for low frequency bandwidth. The multiplexer is provided with: a filter (13); and a filter (14) comprising a ladder filter for passing a high frequency signal in a frequency bandwidth higher than that of the filter (13). The filter (14) has series arm resonators (32a to 32e) and parallel arm resonators (34a to 34d), and an inductor (36a) having an inductance value larger than the inductance value between the parallel arm resonator (34d) and the ground is connected between the parallel arm resonator (34a) and the ground.
Inventors:
KONAKA YOHEI (JP)
Application Number:
PCT/JP2017/044421
Publication Date:
July 05, 2018
Filing Date:
December 11, 2017
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H03H9/72; H03H9/64; H04B1/50
Domestic Patent References:
| WO2016015914A1 | 2016-02-04 | |||
| WO2014045726A1 | 2014-03-27 |
Foreign References:
| JP2010192974A | 2010-09-02 |
Attorney, Agent or Firm:
YOSHIKAWA, Shuichi et al. (JP)
Download PDF: