JP7692109B2 - 弾性波フィルタ、分波器、および通信装置 - Google Patents

弾性波フィルタ、分波器、および通信装置 Download PDF

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Publication number
JP7692109B2
JP7692109B2 JP2024506393A JP2024506393A JP7692109B2 JP 7692109 B2 JP7692109 B2 JP 7692109B2 JP 2024506393 A JP2024506393 A JP 2024506393A JP 2024506393 A JP2024506393 A JP 2024506393A JP 7692109 B2 JP7692109 B2 JP 7692109B2
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Japan
Prior art keywords
duty
electrode finger
electrode
resonator
acoustic wave
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JP2024506393A
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Japanese (ja)
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JPWO2023171741A1 (https=
JPWO2023171741A5 (https=
Inventor
俊哉 木村
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Kyocera Corp
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Kyocera Corp
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    • 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
    • H03H9/02—Details
    • H03H9/02535—Details of surface acoustic wave devices
    • H03H9/02543—Characteristics of substrate, e.g. cutting angles
    • H03H9/02559—Characteristics of substrate, e.g. cutting angles of lithium niobate or lithium-tantalate substrates
    • 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
    • H03H9/02866—Means for compensation or elimination of undesirable effects of bulk wave excitation and 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
    • 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
    • H03H9/1457—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
    • H03H9/46—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
    • H03H9/46—Filters
    • H03H9/64—Filters using surface acoustic waves
    • H03H9/6489—Compensation 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
    • H03H9/70—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

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  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
JP2024506393A 2022-03-11 2023-03-09 弾性波フィルタ、分波器、および通信装置 Active JP7692109B2 (ja)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2022038498 2022-03-11
JP2022038498 2022-03-11
PCT/JP2023/009014 WO2023171741A1 (ja) 2022-03-11 2023-03-09 弾性波フィルタ、分波器、および通信装置

Publications (3)

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JPWO2023171741A1 JPWO2023171741A1 (https=) 2023-09-14
JPWO2023171741A5 JPWO2023171741A5 (https=) 2024-11-15
JP7692109B2 true JP7692109B2 (ja) 2025-06-12

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JP2024506393A Active JP7692109B2 (ja) 2022-03-11 2023-03-09 弾性波フィルタ、分波器、および通信装置

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US (1) US20250192753A1 (https=)
JP (1) JP7692109B2 (https=)
CN (1) CN118830196A (https=)
WO (1) WO2023171741A1 (https=)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015064238A1 (ja) 2013-10-31 2015-05-07 京セラ株式会社 弾性波素子、フィルタ素子および通信装置
WO2018003273A1 (ja) 2016-06-28 2018-01-04 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
JP2019180064A (ja) 2018-03-30 2019-10-17 京セラ株式会社 弾性波フィルタ、分波器および通信装置
JP2020155968A (ja) 2019-03-20 2020-09-24 太陽誘電株式会社 弾性波共振器、フィルタおよびマルチプレクサ
JP2021100280A (ja) 2018-11-14 2021-07-01 京セラ株式会社 弾性波装置、分波器および通信装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015064238A1 (ja) 2013-10-31 2015-05-07 京セラ株式会社 弾性波素子、フィルタ素子および通信装置
WO2018003273A1 (ja) 2016-06-28 2018-01-04 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
JP2019180064A (ja) 2018-03-30 2019-10-17 京セラ株式会社 弾性波フィルタ、分波器および通信装置
JP2021100280A (ja) 2018-11-14 2021-07-01 京セラ株式会社 弾性波装置、分波器および通信装置
JP2020155968A (ja) 2019-03-20 2020-09-24 太陽誘電株式会社 弾性波共振器、フィルタおよびマルチプレクサ

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Publication number Publication date
US20250192753A1 (en) 2025-06-12
CN118830196A (zh) 2024-10-22
JPWO2023171741A1 (https=) 2023-09-14
WO2023171741A1 (ja) 2023-09-14

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