Title:
FILTER DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/074400
Kind Code:
A1
Abstract:
Provided is a filter device in which it is possible to improve attenuation characteristics. In the filter device 1, at least two filters including first and second filters 11, 12 are configured on a piezoelectric substrate 2. A first input terminal 11a serving as a first input/output terminal and a first output terminal 11b serving as a second input/output terminal of the first filter 11, as well as a second input terminal 12a serving as a third input/output terminal and a second output terminal 12b serving as a fourth input/output terminal of the second filter 12, are provided on a first main surface 2a. A first virtual straight line B linking the first input terminal 11a and the first output terminal 11b, and a second virtual straight line C linking the second input terminal 12a and the second output terminal 12b, intersect one another. The relationship X2 > X1 is satisfied, where X1 is the distance between the first input terminal 11a and the second input terminal 12a, and X2 is the distance between the first output terminal 11b and the second output terminal 12b.
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Inventors:
ISHITAKI MASAYUKI (JP)
Application Number:
PCT/JP2022/038265
Publication Date:
May 04, 2023
Filing Date:
October 13, 2022
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H03H9/64; H03H9/72
Domestic Patent References:
| WO2020179906A1 | 2020-09-10 |
Foreign References:
| JP2009225198A | 2009-10-01 | |||
| JP2007258832A | 2007-10-04 |
Attorney, Agent or Firm:
OSAKA FRONT (JP)
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