CN117795852A - 弹性波装置、滤波器、分波器以及通信装置 - Google Patents

弹性波装置、滤波器、分波器以及通信装置 Download PDF

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Publication number
CN117795852A
CN117795852A CN202280047825.1A CN202280047825A CN117795852A CN 117795852 A CN117795852 A CN 117795852A CN 202280047825 A CN202280047825 A CN 202280047825A CN 117795852 A CN117795852 A CN 117795852A
Authority
CN
China
Prior art keywords
region
electrode fingers
electrode
elastic wave
sound velocity
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202280047825.1A
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English (en)
Chinese (zh)
Inventor
金泽富夫
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kyocera Corp
Original Assignee
Kyocera Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kyocera Corp filed Critical Kyocera Corp
Publication of CN117795852A publication Critical patent/CN117795852A/zh
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/02535—Details of surface acoustic wave devices
    • H03H9/02818—Means for compensation or elimination of undesirable effects
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/02535—Details of surface acoustic wave devices
    • H03H9/02543—Characteristics of substrate, e.g. cutting angles
    • H03H9/02574—Characteristics of substrate, e.g. cutting angles of combined substrates, multilayered substrates, piezoelectrical layers on not-piezoelectrical substrate
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/02535—Details of surface acoustic wave devices
    • H03H9/02992—Details of bus bars, contact pads or other electrical connections for finger electrodes
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/125—Driving means, e.g. electrodes, coils
    • H03H9/145—Driving means, e.g. electrodes, coils for networks using surface acoustic waves
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/125—Driving means, e.g. electrodes, coils
    • H03H9/145—Driving means, e.g. electrodes, coils for networks using surface acoustic waves
    • H03H9/14544—Transducers of particular shape or position
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/125—Driving means, e.g. electrodes, coils
    • H03H9/145—Driving means, e.g. electrodes, coils for networks using surface acoustic waves
    • H03H9/14544—Transducers of particular shape or position
    • H03H9/1457—Transducers having different finger widths
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/25—Constructional features of resonators using surface acoustic waves
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/46—Filters
    • H03H9/64—Filters using surface acoustic waves
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/46—Filters
    • H03H9/64—Filters using surface acoustic waves
    • H03H9/6423—Means for obtaining a particular transfer characteristic
    • H03H9/6433—Coupled resonator filters
    • H03H9/6483—Ladder SAW filters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/70—Multiple-port networks for connecting several sources or loads, working on different frequencies or frequency bands, to a common load or source
    • H03H9/72—Networks using surface acoustic waves

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
CN202280047825.1A 2021-07-14 2022-07-08 弹性波装置、滤波器、分波器以及通信装置 Pending CN117795852A (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2021116224 2021-07-14
JP2021-116224 2021-07-14
PCT/JP2022/027084 WO2023286705A1 (ja) 2021-07-14 2022-07-08 弾性波装置、フィルタ、分波器及び通信装置

Publications (1)

Publication Number Publication Date
CN117795852A true CN117795852A (zh) 2024-03-29

Family

ID=84919395

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202280047825.1A Pending CN117795852A (zh) 2021-07-14 2022-07-08 弹性波装置、滤波器、分波器以及通信装置

Country Status (4)

Country Link
US (1) US12542530B2 (https=)
JP (2) JP7630624B2 (https=)
CN (1) CN117795852A (https=)
WO (1) WO2023286705A1 (https=)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2024190677A1 (https=) * 2023-03-15 2024-09-19

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7939989B2 (en) 2009-09-22 2011-05-10 Triquint Semiconductor, Inc. Piston mode acoustic wave device and method providing a high coupling factor
DE102010005596B4 (de) * 2010-01-25 2015-11-05 Epcos Ag Elektroakustischer Wandler mit verringerten Verlusten durch transversale Emission und verbesserter Performance durch Unterdrückung transversaler Moden
CN107615654B (zh) * 2015-06-24 2020-08-21 株式会社村田制作所 滤波器装置
WO2018003338A1 (ja) 2016-06-27 2018-01-04 株式会社村田製作所 弾性波フィルタ装置
WO2018216548A1 (ja) * 2017-05-22 2018-11-29 株式会社村田製作所 弾性波装置
WO2019003909A1 (ja) * 2017-06-26 2019-01-03 株式会社村田製作所 弾性波装置及び複合フィルタ装置
JP6954799B2 (ja) 2017-10-20 2021-10-27 株式会社村田製作所 弾性波装置
JP6888691B2 (ja) 2017-12-19 2021-06-16 株式会社村田製作所 弾性波装置
CN111758219B (zh) * 2018-03-14 2024-07-30 株式会社村田制作所 弹性波装置
CN110572136B (zh) * 2019-09-09 2022-11-01 杭州左蓝微电子技术有限公司 一种叉指换能器

Also Published As

Publication number Publication date
WO2023286705A1 (ja) 2023-01-19
JP7630624B2 (ja) 2025-02-17
US12542530B2 (en) 2026-02-03
JPWO2023286705A1 (https=) 2023-01-19
JP2025038204A (ja) 2025-03-18
US20240322785A1 (en) 2024-09-26

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