JP7055492B1 - 弾性波デバイス - Google Patents
弾性波デバイス Download PDFInfo
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- JP7055492B1 JP7055492B1 JP2021015364A JP2021015364A JP7055492B1 JP 7055492 B1 JP7055492 B1 JP 7055492B1 JP 2021015364 A JP2021015364 A JP 2021015364A JP 2021015364 A JP2021015364 A JP 2021015364A JP 7055492 B1 JP7055492 B1 JP 7055492B1
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- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
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- 230000000694 effects Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
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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 devices; Electromechanical resonators
- H03H9/46—Filters
- H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
- H03H9/56—Monolithic crystal filters
- H03H9/564—Monolithic crystal filters implemented with thin-film techniques
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/02—Details
- H03H9/02007—Details of bulk acoustic wave devices
- H03H9/02015—Characteristics of piezoelectric layers, e.g. cutting angles
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/02—Details
- H03H9/02007—Details of bulk acoustic wave devices
- H03H9/02015—Characteristics of piezoelectric layers, e.g. cutting angles
- H03H9/02023—Characteristics of piezoelectric layers, e.g. cutting angles consisting of quartz
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/02—Details
- H03H9/02535—Details of surface acoustic wave devices
- H03H9/02543—Characteristics of substrate, e.g. cutting angles
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/02—Details
- H03H9/02535—Details of surface acoustic wave devices
- H03H9/02543—Characteristics of substrate, e.g. cutting angles
- H03H9/02551—Characteristics of substrate, e.g. cutting angles of quartz substrates
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; 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 devices; 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
- H03H9/703—Networks using bulk acoustic wave devices
- H03H9/706—Duplexers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; 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
- H03H9/725—Duplexers
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- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Abstract
【解決手段】送信通過帯域を有する送信フィルタと、受信通過帯域を有する受信フィルタとを備える弾性波デバイスであって、前記送信フィルタは、複数の直列共振器と複数の並列共振器を有し、前記複数の直列共振器のうちで、前記送信フィルタの入力端子に最も近い位置に配置された直列共振器は、前記受信通過帯域の最も高い周波数と同じ反共振周波数を有し、前記送信通過帯域の周波数ではない共振周波数を有し、前記複数の直列共振器のキャパシタンスの平均値よりも小さく、かつ、前記複数の並列共振器のキャパシタンスの平均値よりも大きいキャパシタンスを有する、弾性波デバイス。
【選択図】図2
Description
送信通過帯域を有する送信フィルタと
受信通過帯域を有する受信フィルタと
を備える弾性波デバイスであって、
前記送信フィルタは、複数の直列共振器と複数の並列共振器を有し、
前記複数の直列共振器のうちで、前記送信フィルタの入力端子に最も近い位置に配置された直列共振器は、
前記受信通過帯域の最も高い周波数と同じ反共振周波数を有し、
前記送信通過帯域の周波数ではない共振周波数を有し、
前記複数の直列共振器のキャパシタンスの平均値よりも小さく、かつ、
前記複数の並列共振器のキャパシタンスの平均値よりも大きいキャパシタンスを有する、
弾性波デバイスとした。
図1は、実施例1にかかる弾性波デバイス1の断面図である。
次に、本発明の別の実施形態である実施例2について説明する。
次に、本発明の別の実施形態である実施例3について説明する。
3 130 配線基板
5 105 デバイスチップ
9 電極パッド
15 バンプ
17 117 封止部
31 131 外部接続端子
52 弾性波素子
54 配線パターン
60 チップ基板
62 圧電膜
64 下部電極
66 上部電極
68 空隙
100 モジュール
111 インダクタ
IC 集積回路部品
Claims (6)
- 送信通過帯域を有する送信フィルタと
受信通過帯域を有する受信フィルタと
を備える弾性波デバイスであって、
前記送信フィルタは、複数の直列共振器と複数の並列共振器を有し、
前記複数の直列共振器のうちで、前記送信フィルタの入力端子に最も近い位置に配置された直列共振器は、
前記受信通過帯域の最も高い周波数と同じ反共振周波数を有し、
前記送信通過帯域の周波数から離れた共振周波数を有し、
前記複数の直列共振器のキャパシタンスの平均値よりも小さく、かつ、
前記複数の並列共振器のキャパシタンスの平均値よりも大きいキャパシタンスを有する、弾性波デバイス。 - 前記送信フィルタと前記受信フィルタの少なくとも一方は、音響薄膜共振器を用いたフィルタである、請求項1に記載の弾性波デバイス。
- 前記送信フィルタと前記受信フィルタの少なくとも一方は、圧電基板上に形成された弾性表面波共振器を用いたフィルタである、請求項1または2に記載の弾性波デバイス。
- 前記送信フィルタおよび前記受信フィルタは弾性表面波共振器を用いたフィルタであり、同一の圧電基板上に形成されている、請求項1~3に記載の弾性波デバイス。
- 前記圧電基板は、サファイア、シリコン、アルミナ、スピネル、水晶またはガラスからなる基板が接合されている請求項3または4に記載の弾性波デバイス。
- 請求項1乃至5に記載の弾性波デバイスを備えるモジュール。
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JP2021015364A JP7055492B1 (ja) | 2021-02-02 | 2021-02-02 | 弾性波デバイス |
CN202110746187.XA CN114844484A (zh) | 2021-02-02 | 2021-07-01 | 弹性波装置及包含所述弹性波装置的模块 |
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JP2021015364A JP7055492B1 (ja) | 2021-02-02 | 2021-02-02 | 弾性波デバイス |
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JP7055492B1 true JP7055492B1 (ja) | 2022-04-18 |
JP2022118669A JP2022118669A (ja) | 2022-08-15 |
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JP7553141B1 (ja) | 2023-05-26 | 2024-09-18 | 三安ジャパンテクノロジー株式会社 | 弾性波デバイスおよびその弾性波デバイスを備えるモジュール |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010011300A (ja) | 2008-06-30 | 2010-01-14 | Murata Mfg Co Ltd | 共振器、該共振器を用いるフィルタ及びデュプレクサ |
JP2012231437A (ja) | 2011-04-27 | 2012-11-22 | Taiyo Yuden Co Ltd | ラダーフィルタ、分波器及びモジュール |
JP2013168996A (ja) | 2009-04-23 | 2013-08-29 | Panasonic Corp | アンテナ共用器とそれを搭載した電子機器 |
JP2019121879A (ja) | 2017-12-28 | 2019-07-22 | 太陽誘電株式会社 | マルチプレクサ |
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2021
- 2021-02-02 JP JP2021015364A patent/JP7055492B1/ja active Active
- 2021-07-01 CN CN202110746187.XA patent/CN114844484A/zh active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010011300A (ja) | 2008-06-30 | 2010-01-14 | Murata Mfg Co Ltd | 共振器、該共振器を用いるフィルタ及びデュプレクサ |
JP2013168996A (ja) | 2009-04-23 | 2013-08-29 | Panasonic Corp | アンテナ共用器とそれを搭載した電子機器 |
JP2012231437A (ja) | 2011-04-27 | 2012-11-22 | Taiyo Yuden Co Ltd | ラダーフィルタ、分波器及びモジュール |
JP2019121879A (ja) | 2017-12-28 | 2019-07-22 | 太陽誘電株式会社 | マルチプレクサ |
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JP2022118669A (ja) | 2022-08-15 |
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