KR20250048595A - 탄성파 디바이스 및 그것을 포함한 래더형 필터 - Google Patents

탄성파 디바이스 및 그것을 포함한 래더형 필터 Download PDF

Info

Publication number
KR20250048595A
KR20250048595A KR1020257009669A KR20257009669A KR20250048595A KR 20250048595 A KR20250048595 A KR 20250048595A KR 1020257009669 A KR1020257009669 A KR 1020257009669A KR 20257009669 A KR20257009669 A KR 20257009669A KR 20250048595 A KR20250048595 A KR 20250048595A
Authority
KR
South Korea
Prior art keywords
resonator
elastic wave
value
electrode
reflector
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
KR1020257009669A
Other languages
English (en)
Korean (ko)
Inventor
켄타로 나카무라
Original Assignee
가부시키가이샤 무라타 세이사쿠쇼
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 가부시키가이샤 무라타 세이사쿠쇼 filed Critical 가부시키가이샤 무라타 세이사쿠쇼
Publication of KR20250048595A publication Critical patent/KR20250048595A/ko
Pending legal-status Critical Current

Links

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)
KR1020257009669A 2020-01-31 2021-01-29 탄성파 디바이스 및 그것을 포함한 래더형 필터 Pending KR20250048595A (ko)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2020015067 2020-01-31
JPJP-P-2020-015067 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
KR1020227021801A KR102787918B1 (ko) 2020-01-31 2021-01-29 탄성파 디바이스 및 그것을 포함한 래더형 필터

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
KR1020227021801A Division KR102787918B1 (ko) 2020-01-31 2021-01-29 탄성파 디바이스 및 그것을 포함한 래더형 필터

Publications (1)

Publication Number Publication Date
KR20250048595A true KR20250048595A (ko) 2025-04-09

Family

ID=77079161

Family Applications (2)

Application Number Title Priority Date Filing Date
KR1020257009669A Pending KR20250048595A (ko) 2020-01-31 2021-01-29 탄성파 디바이스 및 그것을 포함한 래더형 필터
KR1020227021801A Active KR102787918B1 (ko) 2020-01-31 2021-01-29 탄성파 디바이스 및 그것을 포함한 래더형 필터

Family Applications After (1)

Application Number Title Priority Date Filing Date
KR1020227021801A Active KR102787918B1 (ko) 2020-01-31 2021-01-29 탄성파 디바이스 및 그것을 포함한 래더형 필터

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 (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Family Cites Families (12)

* 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
JPH03283710A (ja) * 1990-03-30 1991-12-13 Toshiba Corp 弾性表面波共振子
JP4411539B2 (ja) 2005-08-25 2010-02-10 セイコーエプソン株式会社 Ｓａｗ共振子
JP4734436B2 (ja) 2008-04-11 2011-07-27 日本電波工業株式会社 デュプレクサ
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
JP6683256B2 (ja) * 2016-06-29 2020-04-15 株式会社村田製作所 マルチプレクサ、高周波フロントエンド回路及び通信装置
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
KR102399689B1 (ko) * 2016-10-13 2022-05-19 가부시키가이샤 무라타 세이사쿠쇼 탄성파 필터 장치
JP6798562B2 (ja) * 2016-10-28 2020-12-09 株式会社村田製作所 ラダー型フィルタ、デュプレクサ及び弾性波フィルタ装置
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 (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Also Published As

Publication number Publication date
CN115004546A (zh) 2022-09-02
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

Similar Documents

Publication Publication Date Title
KR102787918B1 (ko) 탄성파 디바이스 및 그것을 포함한 래더형 필터
CN211046891U (zh) 弹性波滤波器
KR102754581B1 (ko) 탄성파 디바이스 및 그것을 포함한 래더형 필터
JP7047919B2 (ja) 弾性波フィルタ
US12212303B2 (en) Acoustic wave filter and multiplexer
US10958246B2 (en) Acoustic wave filter
WO2018168836A1 (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
WO2019111902A1 (ja) マルチプレクサ、高周波フロントエンド回路および通信装置
CN114208035A (zh) 弹性波滤波器
CN113206653A (zh) 弹性波滤波器
CN116868506A (zh) 弹性波滤波器以及多工器
CN109217837B (zh) 多工器
US11855605B2 (en) Acoustic wave filter device and multiplexer
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
KR102894141B1 (ko) 멀티플렉서
WO2023054301A1 (ja) 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
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
WO2023068206A1 (ja) マルチプレクサ
JP2024162470A (ja) マルチプレクサ
CN116918255A (zh) 弹性波滤波器

Legal Events

Date Code Title Description
A107 Divisional application of patent
PA0104 Divisional application for international application

St.27 status event code: A-0-1-A10-A16-div-PA0104

PG1501 Laying open of application

St.27 status event code: A-1-1-Q10-Q12-nap-PG1501

D21 Rejection of application intended

Free format text: ST27 STATUS EVENT CODE: A-1-2-D10-D21-EXM-PE0902 (AS PROVIDED BY THE NATIONAL OFFICE)

PE0902 Notice of grounds for rejection

St.27 status event code: A-1-2-D10-D21-exm-PE0902

P11 Amendment of application requested

Free format text: ST27 STATUS EVENT CODE: A-2-2-P10-P11-NAP-X000 (AS PROVIDED BY THE NATIONAL OFFICE)

P11-X000 Amendment of application requested

St.27 status event code: A-2-2-P10-P11-nap-X000