Title:
FILTER DEVICE, MULTIPLEXER, AND COMMUNICATION DEVICE
Document Type and Number:
Japanese Patent JP2022012383
Kind Code:
A
Abstract:
To provide a multi-band-enabled filter device having a wideband and low loss passband, a wideband blocking band, and a narrowband and steep blocking band.SOLUTION: A filter 1 includes: input/output terminals 100 and 110; an LC parallel resonant circuit 10 including an inductor L1 and a capacitor C1 connected in parallel to each other; and an elastic wave series resonant circuit including series arm resonators s1 and s2 connected in series to each other. The LC parallel resonant circuit 10 and the elastic wave series resonant circuit are connected in series between the input/output terminal 100 and the input/output terminal 110.SELECTED DRAWING: Figure 1A
Inventors:
NISHIO KEISUKE
Application Number:
JP2020114191A
Publication Date:
January 17, 2022
Filing Date:
July 01, 2020
Export Citation:
Assignee:
MURATA MANUFACTURING CO
International Classes:
H03H9/64; H03H7/46; H03H9/17; H03H9/54; H04B1/00; H04B1/40
Attorney, Agent or Firm:
Shuichi Yoshikawa
Masao Sakajima
Masao Sakajima