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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/2018/025962
Kind Code:
A1
Abstract:
This surface acoustic wave filter is provided with resonators (13, 14, 15), wherein: the resonator (14) includes four or more regions having different electrode finger pitches; the electrode finger pitch is constant in each of the four or more regions; and among the four or more regions, the electrode finger pitch in regions (142-144) other than first regions (141, 145) located at both ends of the resonator in a direction in which surface acoustic waves propagate is greater than the electrode finger pitch in the first regions (141, 145), and the electrode finger pitch in a second region (142) adjacent to the first region (141) is different from the electrode finger pitch in a third region (144) adjacent to the first region (145).

Inventors:
MAEDA, Kenta (10-1, Higashikotari 1-chome, Nagaokakyo-sh, Kyoto 55, 〒6178555, JP)
Application Number:
JP2017/028269
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:
H03H9/145; H03H9/64; H03H9/72
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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