CN115004546A - 弹性波设备及具备该弹性波设备的梯型滤波器 - Google Patents

弹性波设备及具备该弹性波设备的梯型滤波器 Download PDF

Info

Publication number
CN115004546A
CN115004546A CN202180010409.XA CN202180010409A CN115004546A CN 115004546 A CN115004546 A CN 115004546A CN 202180010409 A CN202180010409 A CN 202180010409A CN 115004546 A CN115004546 A CN 115004546A
Authority
CN
China
Prior art keywords
resonator
electrode fingers
elastic wave
reflector
electrode
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
CN202180010409.XA
Other languages
English (en)
Chinese (zh)
Inventor
中村健太郎
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.)
Murata Manufacturing Co Ltd
Original Assignee
Murata Manufacturing Co Ltd
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 Murata Manufacturing Co Ltd filed Critical Murata Manufacturing Co Ltd
Publication of CN115004546A publication Critical patent/CN115004546A/zh
Pending legal-status Critical Current

Links

Images

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
    • H03H9/46—Filters
    • H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
    • H03H9/56—Monolithic crystal filters
    • H03H9/566—Electric coupling means therefor
    • H03H9/568—Electric coupling means therefor consisting of a ladder configuration
    • 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
    • H03H9/02637—Details concerning reflective or coupling arrays
    • H03H9/02685—Grating lines having particular arrangements
    • H03H9/02771—Reflector banks
    • 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
    • H03H9/02842—Means for compensation or elimination of undesirable effects of reflections
    • 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
    • H03H9/14538—Formation
    • H03H9/14541—Multilayer finger or busbar electrode
    • 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
    • H03H9/14547—Fan shaped; Tilted; Shifted; Slanted; Tapered; Arched; Stepped finger transducers
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
CN202180010409.XA 2020-01-31 2021-01-29 弹性波设备及具备该弹性波设备的梯型滤波器 Pending CN115004546A (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2020015067 2020-01-31
JP2020-015067 2020-01-31
PCT/JP2021/003252 WO2021153736A1 (ja) 2020-01-31 2021-01-29 弾性波デバイスおよびそれを備えたラダー型フィルタ

Publications (1)

Publication Number Publication Date
CN115004546A true CN115004546A (zh) 2022-09-02

Family

ID=77079161

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202180010409.XA Pending CN115004546A (zh) 2020-01-31 2021-01-29 弹性波设备及具备该弹性波设备的梯型滤波器

Country Status (5)

Country Link
US (1) US12255632B2 (https=)
JP (1) JP7472918B2 (https=)
KR (2) KR20250048595A (https=)
CN (1) CN115004546A (https=)
WO (1) WO2021153736A1 (https=)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021132361A (ja) * 2020-02-21 2021-09-09 株式会社村田製作所 弾性波装置
CN113810014B (zh) * 2021-09-23 2025-08-22 武汉敏声新技术有限公司 叉指型体声波谐振器及滤波器
KR102906690B1 (ko) * 2022-01-13 2025-12-31 (주)와이솔 감쇠 특성이 개선된 표면 탄성파 필터
WO2023137769A1 (zh) * 2022-01-24 2023-07-27 华为技术有限公司 一种声学滤波器及电子设备
US12587167B2 (en) * 2023-02-02 2026-03-24 Skyworks Solutions, Inc. High quality factor saw resonators with shared reflector
US20240364305A1 (en) * 2023-04-06 2024-10-31 Skyworks Solutions, Inc. Acoustic wave device with interdigital transducer electrodes having two bus bars

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03283710A (ja) * 1990-03-30 1991-12-13 Toshiba Corp 弾性表面波共振子
JP2009273120A (ja) * 2008-04-11 2009-11-19 Nippon Dempa Kogyo Co Ltd デュプレクサ
CN109478880A (zh) * 2016-06-29 2019-03-15 株式会社村田制作所 多工器、高频前端电路及通信装置
CN109845105A (zh) * 2016-10-13 2019-06-04 株式会社村田制作所 弹性波滤波器装置
CN109863695A (zh) * 2016-10-28 2019-06-07 株式会社村田制作所 梯型滤波器、双工器以及弹性波滤波器装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6397004A (ja) * 1986-10-13 1988-04-27 Pioneer Electronic Corp 表面弾性波共振子
JPH02250413A (ja) * 1989-03-23 1990-10-08 Murata Mfg Co Ltd 弾性表面波装置
JPH10303691A (ja) 1997-04-25 1998-11-13 Kyocera Corp 弾性表面波装置
JP2002176335A (ja) 2000-09-29 2002-06-21 Kyocera Corp 弾性表面波装置
JP4411539B2 (ja) 2005-08-25 2010-02-10 セイコーエプソン株式会社 Ｓａｗ共振子
CN106253877B (zh) * 2011-11-30 2019-03-08 天工滤波方案日本有限公司 梯型弹性波滤波器和天线共用器
CN109643982B (zh) 2016-08-30 2020-03-24 株式会社村田制作所 弹性波装置及其制造方法
WO2019065666A1 (ja) 2017-09-27 2019-04-04 株式会社村田製作所 弾性波装置
JP2021132361A (ja) * 2020-02-21 2021-09-09 株式会社村田製作所 弾性波装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03283710A (ja) * 1990-03-30 1991-12-13 Toshiba Corp 弾性表面波共振子
JP2009273120A (ja) * 2008-04-11 2009-11-19 Nippon Dempa Kogyo Co Ltd デュプレクサ
CN109478880A (zh) * 2016-06-29 2019-03-15 株式会社村田制作所 多工器、高频前端电路及通信装置
CN109845105A (zh) * 2016-10-13 2019-06-04 株式会社村田制作所 弹性波滤波器装置
CN109863695A (zh) * 2016-10-28 2019-06-07 株式会社村田制作所 梯型滤波器、双工器以及弹性波滤波器装置

Also Published As

Publication number Publication date
KR102787918B1 (ko) 2025-03-31
JPWO2021153736A1 (https=) 2021-08-05
JP7472918B2 (ja) 2024-04-23
US12255632B2 (en) 2025-03-18
WO2021153736A1 (ja) 2021-08-05
US20220360252A1 (en) 2022-11-10
KR20220107021A (ko) 2022-08-01
KR20250048595A (ko) 2025-04-09

Similar Documents

Publication Publication Date Title
JP7472918B2 (ja) 弾性波デバイスおよびそれを備えたラダー型フィルタ
JP7047919B2 (ja) 弾性波フィルタ
JP7414080B2 (ja) 弾性波デバイスおよびそれを備えたラダー型フィルタ
CN111527699B (zh) 弹性波滤波器
CN114208035B (zh) 弹性波滤波器
CN101154936A (zh) 声波器件、谐振器以及滤波器
CN114008917A (zh) 弹性波滤波器和多工器
CN114270707B (zh) 弹性波装置
CN113206653A (zh) 弹性波滤波器
CN116868506A (zh) 弹性波滤波器以及多工器
US11855605B2 (en) Acoustic wave filter device and multiplexer
JP2023044392A (ja) 弾性波素子、弾性波フィルタ装置およびマルチプレクサ
CN120049861A (zh) 多工器
JP7344662B2 (ja) マルチプレクサ
JP7657515B2 (ja) ラダー型フィルタおよびマルチプレクサ
WO2023074373A1 (ja) 弾性波共振子、弾性波フィルタ装置およびマルチプレクサ
CN116918255A (zh) 弹性波滤波器
JP2024104398A (ja) マルチプレクサ
JP2024157869A (ja) 弾性波素子、弾性波フィルタ装置およびマルチプレクサ
WO2023090238A1 (ja) マルチプレクサ
WO2023054301A1 (ja) 弾性波フィルタ装置およびマルチプレクサ
JP2025078470A (ja) 弾性波素子、弾性波フィルタ装置およびマルチプレクサ
CN119605082A (zh) 弹性波装置
CN120454665A (zh) 弹性波谐振器以及弹性波滤波器装置
CN113054944A (zh) 弹性波滤波器

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination