KR102754581B1 - 탄성파 디바이스 및 그것을 포함한 래더형 필터 - Google Patents

탄성파 디바이스 및 그것을 포함한 래더형 필터 Download PDF

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Publication number
KR102754581B1
KR102754581B1 KR1020227022834A KR20227022834A KR102754581B1 KR 102754581 B1 KR102754581 B1 KR 102754581B1 KR 1020227022834 A KR1020227022834 A KR 1020227022834A KR 20227022834 A KR20227022834 A KR 20227022834A KR 102754581 B1 KR102754581 B1 KR 102754581B1
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South Korea
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resonator
electrode
elastic wave
value
frequency
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Korean (ko)
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KR20220112806A (ko
Inventor
켄타로 나카무라
신이치 오카다
슌스케 키도
šœ스케 키도
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가부시키가이샤 무라타 세이사쿠쇼
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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
    • H03H9/125—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
    • H03H9/02535—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
    • 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
    • H03H9/125—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
    • 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
    • H03H9/02—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
    • H03H9/14594—Plan-rotated or plan-tilted 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
    • H03H9/25—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
    • 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
    • H03H9/02—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

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  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
KR1020227022834A 2020-01-31 2021-01-29 탄성파 디바이스 및 그것을 포함한 래더형 필터 Active KR102754581B1 (ko)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2020015068 2020-01-31
JPJP-P-2020-015068 2020-01-31
PCT/JP2021/003249 WO2021153734A1 (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 (2)

Publication Number Publication Date
KR20220112806A KR20220112806A (ko) 2022-08-11
KR102754581B1 true KR102754581B1 (ko) 2025-01-14

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KR1020227022834A Active KR102754581B1 (ko) 2020-01-31 2021-01-29 탄성파 디바이스 및 그것을 포함한 래더형 필터

Country Status (5)

Country Link
US (1) US12255635B2 (https=)
JP (1) JP7414080B2 (https=)
KR (1) KR102754581B1 (https=)
CN (1) CN115004547A (https=)
WO (1) WO2021153734A1 (https=)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
WO2023190654A1 (ja) * 2022-03-29 2023-10-05 株式会社村田製作所 弾性波装置
CN115694405B (zh) * 2022-11-16 2024-10-11 华中科技大学 一种产生挠曲电的结构和方法
US20240364305A1 (en) * 2023-04-06 2024-10-31 Skyworks Solutions, Inc. Acoustic wave device with interdigital transducer electrodes having two bus bars
KR102844660B1 (ko) * 2023-07-25 2025-08-11 (주)와이솔 질량 부가막이 전극 상에 형성된 표면 탄성파 필터
CN119602738B (zh) * 2024-10-28 2025-12-05 锐石创芯(重庆)微电子有限公司 声表面波器件及射频前端模组
CN121308715A (zh) * 2025-01-08 2026-01-09 锐石创芯(重庆)微电子有限公司 滤波器、射频前端模组和电子设备

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009273120A (ja) * 2008-04-11 2009-11-19 Nippon Dempa Kogyo Co Ltd デュプレクサ

Family Cites Families (14)

* 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
JPH10303691A (ja) 1997-04-25 1998-11-13 Kyocera Corp 弾性表面波装置
JP2000224003A (ja) * 1999-02-03 2000-08-11 Toyo Commun Equip Co Ltd 縦結合二重モードｓａｗフィルタ
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
JP2010193135A (ja) * 2009-02-18 2010-09-02 Epson Toyocom Corp Ｓａｗデバイス
JP2010263296A (ja) * 2009-04-30 2010-11-18 Murata Mfg Co Ltd 弾性境界波装置
JP5810113B2 (ja) * 2013-02-19 2015-11-11 スカイワークス・パナソニック フィルターソリューションズ ジャパン株式会社 弾性波共振器とこれを用いた弾性波フィルタおよびアンテナ共用器
WO2014199683A1 (ja) * 2013-06-13 2014-12-18 株式会社村田製作所 弾性表面波フィルタ、弾性表面波フィルタ装置およびデュプレクサ
JP2015029358A (ja) * 2014-10-29 2015-02-12 セイコーエプソン株式会社 弾性表面波共振子、弾性表面波発振器および電子機器
JP6750528B2 (ja) * 2016-04-21 2020-09-02 株式会社村田製作所 弾性波フィルタ装置
WO2018061878A1 (ja) * 2016-09-29 2018-04-05 株式会社村田製作所 弾性波装置、高周波フロントエンド回路および通信装置
WO2018168836A1 (ja) * 2017-03-15 2018-09-20 株式会社村田製作所 弾性波素子、弾性波フィルタ装置およびマルチプレクサ
JP2021132361A (ja) * 2020-02-21 2021-09-09 株式会社村田製作所 弾性波装置

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009273120A (ja) * 2008-04-11 2009-11-19 Nippon Dempa Kogyo Co Ltd デュプレクサ

Also Published As

Publication number Publication date
WO2021153734A1 (ja) 2021-08-05
KR20220112806A (ko) 2022-08-11
JP7414080B2 (ja) 2024-01-16
US12255635B2 (en) 2025-03-18
US20220352874A1 (en) 2022-11-03
CN115004547A (zh) 2022-09-02
JPWO2021153734A1 (https=) 2021-08-05

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