Title:
ELASTIC WAVE DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/037944
Kind Code:
A1
Abstract:
Provided is an elastic wave device that can improve isolation characteristics. An elastic wave device 10 comprises: a mounting substrate 2 which is a multilayer body including a first layer 2a provided with first signal wiring 3 and second signal wiring 4, at least a portion of the signal wirings facing each other, and a second layer provided with a ground electrode; and an elastic wave filter 1 provided on the mounting substrate 2 and electrically connected to the first signal wiring 3, the second signal wiring 4, and the ground electrode. The ground electrode overlaps in a planar view with the first signal wiring 3 and the second signal wiring 4 and a region (inter-wiring region A) between the first signal wiring 3 and the second signal wiring 4. A ground electrode omitted portion 7 is provided to a section of the second layer overlapping with the inter-wiring region A in a planar view.
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Inventors:
NOGUCHI, Akira (JP)
Application Number:
PCT/JP2022/032805
Publication Date:
March 16, 2023
Filing Date:
August 31, 2022
Export Citation:
Assignee:
MURATA MANUFACTURING CO., LTD. (JP)
International Classes:
H03H9/25; H03H9/72
Attorney, Agent or Firm:
OSAKA FRONT (JP)
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