Title:
ELASTIC WAVE FILTER
Document Type and Number:
WIPO Patent Application WO/2021/049206
Kind Code:
A1
Abstract:
This elastic wave filter is provided with at least three division resonators (Sa, Sb, Sc, Sd) connected in series to one another. The at least three division resonators (Sa, Sb, Sc, Sd) each have an Inter Digital Transducer (IDT) electrode, and are arranged in a direction intersecting with the direction of propagation of elastic waves. The respective centers, in the elastic wave propagation direction of the IDT electrode, of a first division resonator (Sb) and a second division resonator (Sa) which are adjacent to each other among the at least three division resonators (Sa, Sb, Sc, Sd) are shifted from each other when viewed from a direction orthogonal to the elastic wave propagation direction.
Inventors:
OKADA KEIJI (JP)
Application Number:
PCT/JP2020/029725
Publication Date:
March 18, 2021
Filing Date:
August 03, 2020
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H03H9/145; H03H9/64
Domestic Patent References:
| WO2019065666A1 | 2019-04-04 | |||
| WO2009063559A1 | 2009-05-22 | |||
| WO2014133084A1 | 2014-09-04 | |||
| WO2018123775A1 | 2018-07-05 |
Foreign References:
| JPS51113343U | 1976-09-14 | |||
| JP2011172191A | 2011-09-01 | |||
| JP2019186726A | 2019-10-24 | |||
| JP2011040817A | 2011-02-24 |
Attorney, Agent or Firm:
YOSHIKAWA, Shuichi et al. (JP)
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