JP2022119204A - マルチマーク・インターデジタル変換器を有する横方向励起フィルムバルク音響共振器 - Google Patents
マルチマーク・インターデジタル変換器を有する横方向励起フィルムバルク音響共振器 Download PDFInfo
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- H—ELECTRICITY
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- 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
-
- 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
- H03H9/02228—Guided bulk acoustic wave devices or Lamb wave devices having interdigital transducers situated in parallel planes on either side of a piezoelectric layer
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/15—Constructional features of resonators consisting of piezoelectric or electrostrictive material
- H03H9/17—Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator
- H03H9/171—Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator implemented with thin-film techniques, i.e. of the film bulk acoustic resonator [FBAR] type
- H03H9/172—Means for mounting on a substrate, i.e. means constituting the material interface confining the waves to a volume
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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 devices; Electromechanical resonators
- H03H9/02—Details
- H03H9/125—Driving means, e.g. electrodes, coils
- H03H9/13—Driving means, e.g. electrodes, coils for networks consisting of piezoelectric or electrostrictive materials
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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 devices; Electromechanical resonators
- H03H9/02—Details
- H03H9/125—Driving means, e.g. electrodes, coils
- H03H9/13—Driving means, e.g. electrodes, coils for networks consisting of piezoelectric or electrostrictive materials
- H03H9/132—Driving means, e.g. electrodes, coils for networks consisting of piezoelectric or electrostrictive materials characterized by a particular shape
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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 devices; Electromechanical resonators
- H03H9/15—Constructional features of resonators consisting of piezoelectric or electrostrictive material
- H03H9/17—Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator
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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 devices; Electromechanical resonators
- H03H9/15—Constructional features of resonators consisting of piezoelectric or electrostrictive material
- H03H9/17—Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator
- H03H9/171—Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator implemented with thin-film techniques, i.e. of the film bulk acoustic resonator [FBAR] type
- H03H9/172—Means for mounting on a substrate, i.e. means constituting the material interface confining the waves to a volume
- H03H9/174—Membranes
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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 devices; Electromechanical resonators
- H03H9/15—Constructional features of resonators consisting of piezoelectric or electrostrictive material
- H03H9/17—Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator
- H03H9/171—Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator implemented with thin-film techniques, i.e. of the film bulk acoustic resonator [FBAR] type
- H03H9/172—Means for mounting on a substrate, i.e. means constituting the material interface confining the waves to a volume
- H03H9/175—Acoustic mirrors
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
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- H03H9/46—Filters
- H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
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- 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
Description
本特許文書の開示の一部には、著作権の保護の対象となる材料を含む。本特許文書は、所有者のトレードドレスである事項又はトレードドレスとなり得る事項を図示及び/又は記載し得る。著作権及びトレードドレスの所有者は、その特許開示が米国特許商標庁の特許ファイル又は記録内にあるので、当該特許開示を任意の者が複製することに異議はないが、それ以外は何であれ、全ての著作権及びトレードドレス権を留保する。
本特許は、2021年2月3日に出願された「CHIRPED XBAR ELECTRODES」と題する仮特許出願第63/144,977号の優先権を主張し、その内容全体は参照によりここに組み込まれるものとする。
図1は、横方向励起フィルムバルク音響共振器(XBAR)100の簡略化された概略上面図、直交断面図、及び詳細断面図を示す。XBAR100などのXBARタイプの共振器は、バンドリジェクトフィルタ、バンドパスフィルタ、デュプレクサ、及びマルチプレクサを含む様々なRFフィルタで使用し得る。XBARは、周波数が3GHzを超える通信帯域のフィルタでの使用に特に適している。
この説明全体を通して、示される実施形態及び実施例は、開示又は特許請求される装置及び手順に対する制限ではなく、模範と見なされるべきである。本明細書に提示される例の多くは、方法動作又はシステム要素の特定の組み合わせを含むが、それらの動作及びそれらの要素は、同じ目的を達成するために他の方法で組み合わせることができることを理解されたい。フローチャートに関しては、ステップを追加することも、より少なくすることもでき、示されているステップを組み合わせて、あるいはさらに改良して、本明細書に記載の方法を達成することもできる。一実施形態に関連してのみ論じられる動作、要素、及び特徴は、他の実施形態における同様の役割から除外されることを意図するものではない。
Claims (20)
- 前面及び背面を有する圧電プレートであって、前記背面は基板の表面に取り付けられ、前記圧電プレートの一部は、前記基板のキャビティにまたがるダイアフラムを形成する、圧電プレートと、
前記前面上の導体パターンであって、前記導体パターンがマルチマーク・インターデジタル変換器(IDT)を備え、前記IDTのフィンガが前記ダイアフラム上にある、導体パターンと、
を備える、音響共振器。 - 一次剪断音響モードは、前記圧電プレートの前記IDTによって励起される、請求項1に記載の音響共振器。
- 前記一次剪断音響モードは、前記IDTに印加される無線周波数信号に応答して励起される、請求項2に記載の音響共振器。
- 前記IDTのマークは、前記IDTの長さに沿って変化する、請求項1に記載の音響共振器。
- 前記IDTは、長さ方向に2つ以上のセクションに分割され、各セクションは、各他のセクションのマークとは異なるそれぞれのマークを有する、請求項1に記載の音響共振器。
- 前記IDTのマークは、前記IDTの長さ方向に連続的に変化する、請求項1に記載の音響共振器。
- 前記IDTのピッチは、前記IDTの全体にわたって一定である、請求項1に記載の音響共振器。
- 前記IDTのピッチは、前記IDTの長さ方向に変化する、請求項1に記載の音響共振器。
- 前記IDTは、長さ方向に2つ以上のセクションに分割され、各セクションは、各他のセクションのピッチとは異なるそれぞれのピッチを有する、請求項8に記載の音響共振器。
- 前記IDTのピッチは、前記IDTの長さ方向に連続的に変化する、請求項8に記載の音響共振器。
- 前面及び背面を有する圧電プレートであって、前記背面は基板の表面に取り付けられ、前記圧電プレートの一部は、前記基板内のそれぞれのキャビティにまたがる複数のダイアフラムを形成する、圧電プレートと、
前記前面上の導体パターンであって、前記導体パターンが複数のインターデジタル変換器(IDT)を備え、前記複数のIDTのフィンガが複数のダイアフラムのそれぞれのダイアフラム上にある、導体パターンと、
を備える、フィルタデバイスであって、
前記複数のIDTのうちの第一のIDTは、マルチマークIDTである、フィルタデバイス。 - 一次剪断音響モードは、前記圧電プレートの前記複数のIDTのそれぞれのIDTによって励起される、請求項11に記載のフィルタデバイス。
- 前記一次剪断音響モードは、前記それぞれのIDTに印加されるそれぞれの無線周波数信号に応答して励起される、請求項12に記載のフィルタデバイス。
- 前記複数のIDTのマークの全ては、マルチマークIDTである、請求項11に記載のフィルタデバイス。
- 前記第一のIDTは、長さ方向に2つ以上のセクションに分割され、各セクションは、各他のセクションのマークとは異なるそれぞれのマークを有する、請求項11に記載のフィルタデバイス。
- 前記第一のIDTのマークは、前記第一のIDTの長さ方向に連続的に変化する、請求項11に記載のフィルタデバイス。
- 前記第一のIDTのピッチは、前記第一のIDTの全体にわたって一定である、請求項11に記載のフィルタデバイス。
- 前記第一のIDTのピッチは、前記第一のIDTの長さ方向に変化する、請求項11に記載のフィルタデバイス。
- 前記第一のIDTは、長さ方向に2つ以上のセクションに分割され、各セクションは、各他のセクションのピッチとは異なるそれぞれのピッチを有する、請求項18に記載のフィルタデバイス。
- 前記第一のIDTのピッチは、前記第一のIDTの長さ方向に連続的に変化する、請求項18に記載のフィルタデバイス。
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Application Number | Priority Date | Filing Date | Title |
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US202163144977P | 2021-02-03 | 2021-02-03 | |
US63/144,977 | 2021-02-03 | ||
US17/388,745 US20220247384A1 (en) | 2021-02-03 | 2021-07-29 | Transversely-excited film bulk acoustic resonator with multi-mark interdigital transducer |
US17/388,745 | 2021-07-29 |
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WO2020092414A2 (en) * | 2018-10-31 | 2020-05-07 | Resonant Inc. | Solidly-mounted transversely-excited film bulk acoustic resonator |
US20200373907A1 (en) * | 2018-06-15 | 2020-11-26 | Resonant Inc. | Transversely-excited film bulk acoustic resonator with multi-pitch interdigital transducer |
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US10601392B2 (en) | 2018-06-15 | 2020-03-24 | Resonant Inc. | Solidly-mounted transversely-excited film bulk acoustic resonator |
US10491192B1 (en) * | 2018-06-15 | 2019-11-26 | Resonant Inc. | Transversely-excited film bulk acoustic resonator |
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JP7476912B2 (ja) | 2024-05-01 |
US20230019694A1 (en) | 2023-01-19 |
CN114866061A (zh) | 2022-08-05 |
DE102022102263A1 (de) | 2022-08-04 |
US20220247384A1 (en) | 2022-08-04 |
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