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Patent Searching and Data


Title:
SURFACE ACOUSTIC WAVE FILTER, HIGH-FREQUENCY MODULE, AND MULTIPLEXER
Document Type and Number:
WIPO Patent Application WO/2018/025961
Kind Code:
A1
Abstract:
Provided is a longitudinally-coupled surface acoustic wave filter provided with a first resonator (13), a second resonator (14), and a third resonator (15), wherein: the second resonator (14) and/or the third resonator (15) includes three or more regions having different electrode finger pitches; the electrode finger pitch in a first region which is closest to the first resonator (13), among the three or more regions, is the smallest; and the electrode finger pitch in a second region which is adjacent to the first region, among the three or more regions, is the largest.

Inventors:
MAEDA, Kenta (10-1, Higashikotari 1-chome, Nagaokakyo-sh, Kyoto 55, 〒6178555, JP)
Application Number:
JP2017/028266
Publication Date:
February 08, 2018
Filing Date:
August 03, 2017
Export Citation:
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Assignee:
MURATA MANUFACTURING CO., LTD. (10-1, Higashikotari 1-chome Nagaokakyo-sh, Kyoto 55, 〒6178555, JP)
International Classes:
H03H9/64; H03H9/145; H03H9/72
Domestic Patent References:
WO2007049754A12007-05-03
WO2009001651A12008-12-31
Foreign References:
JP2006333171A2006-12-07
Attorney, Agent or Firm:
YOSHIKAWA, Shuichi et al. (6F Tanaka Ito Pia Shin-Osaka Bldg., 3-10, Nishi Nakajima 5-chome, Yodogawa-ku, Osaka-cit, Osaka 11, 〒5320011, JP)
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