JP6791390B2 - 弾性波装置、高周波フロントエンド回路及び通信装置 - Google Patents
弾性波装置、高周波フロントエンド回路及び通信装置 Download PDFInfo
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- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/02—Details
- H03H9/02535—Details of surface acoustic wave devices
- H03H9/02984—Protection measures against damaging
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- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/02—Details
- H03H9/05—Holders; Supports
- H03H9/10—Mounting in enclosures
- H03H9/1064—Mounting in enclosures for surface acoustic wave [SAW] devices
- H03H9/1092—Mounting in enclosures for surface acoustic wave [SAW] devices the enclosure being defined by a cover cap mounted on an element forming part of the surface acoustic wave [SAW] device on the side of the IDT's
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- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
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- H03F3/24—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages
- H03F3/245—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages with semiconductor devices only
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- H03H3/00—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators
- H03H3/007—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks
- H03H3/08—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of resonators or networks using surface acoustic waves
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- 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
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- H03H9/1064—Mounting in enclosures for surface acoustic wave [SAW] devices
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- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
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- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/111—Indexing scheme relating to amplifiers the amplifier being a dual or triple band amplifier, e.g. 900 and 1800 MHz, e.g. switched or not switched, simultaneously or not
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- H03—ELECTRONIC CIRCUITRY
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- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/451—Indexing scheme relating to amplifiers the amplifier being a radio frequency amplifier
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
- H03F2203/72—Indexing scheme relating to gated amplifiers, i.e. amplifiers which are rendered operative or inoperative by means of a control signal
- H03F2203/7209—Indexing scheme relating to gated amplifiers, i.e. amplifiers which are rendered operative or inoperative by means of a control signal the gated amplifier being switched from a first band to a second band
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- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
Description
2…支持基板
2a…接続部
3…積層膜
4…高音速膜
5…低音速膜
6…圧電薄膜
7…支持部材
7a…開口部
8…カバー部材
9…アンダーバンプメタル層
10…バンプ
12…凹部
12b…内面
13A〜13C…弾性波共振子
14…IDT電極
15A,15B…反射器
16…配線電極
17…接続電極
19…絶縁層
19a,19b…第1,第2の部分
22…支持基板
22a…接続部
32…支持基板
32a…接続部
43…積層膜
43A…音響反射層
44a,44b…高音響インピーダンス膜
45a,45b…低音響インピーダンス膜
51…弾性波装置
60…弾性波装置実装構造体
62…実装基板
68…接続端子
69…封止樹脂
73…積層膜
201A,201B…デュプレクサ
202…アンテナ素子
203…RF信号処理回路
211,212…フィルタ
214…ローノイズアンプ回路
221,222…フィルタ
224…ローノイズアンプ回路
225…スイッチ
230…高周波フロントエンド回路
231,232…フィルタ
234a,234b…パワーアンプ回路
240…通信装置
244a,244b…パワーアンプ回路
R1〜R3…除去領域
X…外縁接触部
Claims (11)
- 支持基板と、
前記支持基板上に設けられており、平面視した場合に前記支持基板の外縁の少なくとも一部よりも内側に設けられており、かつ、圧電薄膜を含む積層膜と、
前記積層膜上に設けられているIDT電極と、
前記支持基板上及び前記積層膜上に設けられており、前記支持基板上から前記積層膜上に至っている絶縁層と、
前記絶縁層上に設けられており、前記IDT電極と電気的に接続されている接続電極と、
前記接続電極と電気的に接続されており、前記接続電極上に直接的にまたは間接的に設けられており、かつ、平面視した場合に前記支持基板上であって前記積層膜が設けられている領域の外側に設けられている、外部接続端子と、
を備え、
前記支持基板における前記積層膜側の主面は、平面視した場合に前記積層膜の外縁の位置に凹部を有し、
前記凹部は、前記絶縁層によって覆われている、弾性波装置。 - 前記積層膜の線膨脹係数と、前記支持基板の線膨張係数とは異なる、請求項1に記載の弾性波装置。
- 前記凹部が、平面視した場合に前記支持基板上であって前記積層膜が設けられている領域の外側の全体に形成されている、請求項1または2に記載の弾性波装置。
- 前記凹部が前記積層膜を囲むように設けられている、請求項1〜3のいずれか1項に記載の弾性波装置。
- 前記支持基板が、前記圧電薄膜を伝搬する弾性波の音速よりも伝搬するバルク波の音速が高い材料からなり、
前記積層膜が、前記圧電薄膜を伝搬する弾性波の音速よりも伝搬するバルク波の音速が低い低音速膜を含み、
前記低音速膜上に前記圧電薄膜が設けられている、請求項1〜4のいずれか1項に記載の弾性波装置。 - 前記積層膜が、前記圧電薄膜を伝搬する弾性波の音速よりも伝搬するバルク波の音速が高い高音速膜と、前記圧電薄膜を伝搬する弾性波の音速よりも伝搬するバルク波の音速が低い低音速膜と、を含み、
前記高音速膜上に前記低音速膜が設けられており、
前記低音速膜上に前記圧電薄膜が設けられている、請求項1〜4のいずれか1項に記載の弾性波装置。 - 前記積層膜が、音響インピーダンスが相対的に高い高音響インピーダンス膜と、前記高音響インピーダンス膜に比べて音響インピーダンスが低い低音響インピーダンス膜と、を有する音響反射層を含み、
前記音響反射層上に前記圧電薄膜が設けられている、請求項1〜4のいずれか1項に記載の弾性波装置。 - 平面視した場合に、前記支持基板上であって前記積層膜が設けられている領域の外側の領域に直接的にまたは間接的に設けられており、前記IDT電極を囲んでいる開口部を有する支持部材と、
前記支持部材上に、前記開口部を覆うように設けられているカバー部材と、
前記接続電極に接続されるように、前記支持部材及び前記カバー部材を貫通しているアンダーバンプメタル層と、
をさらに備え、
前記外部接続端子が、前記接続電極上に前記アンダーバンプメタル層を介して間接的に設けられているバンプであり、
前記支持基板、前記支持部材及び前記カバー部材により囲まれた中空空間内に、前記IDT電極が位置している、請求項1〜7のいずれか1項に記載の弾性波装置。 - 前記外部接続端子が、前記接続電極上に直接的に設けられているバンプである、請求項1〜7のいずれか1項に記載の弾性波装置。
- 請求項1〜9のいずれか1項に記載の弾性波装置と、
パワーアンプと、
を備える、高周波フロントエンド回路。 - 請求項10に記載の高周波フロントエンド回路と、
RF信号処理回路と、
を備える、通信装置。
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JP2013223025A (ja) | 2012-04-13 | 2013-10-28 | Taiyo Yuden Co Ltd | フィルタ装置、フィルタ装置の製造方法及びデュプレクサ |
JP6288110B2 (ja) * | 2013-12-27 | 2018-03-07 | 株式会社村田製作所 | 弾性波装置 |
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JP6432558B2 (ja) * | 2015-06-25 | 2018-12-05 | 株式会社村田製作所 | 弾性波装置 |
JP6519655B2 (ja) * | 2015-06-25 | 2019-05-29 | 株式会社村田製作所 | 弾性波装置 |
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CN107615659B (zh) | 2015-06-25 | 2020-11-17 | 株式会社村田制作所 | 弹性波装置 |
DE112016004042T5 (de) | 2015-09-07 | 2018-06-07 | Murata Manufacturing Co., Ltd. | Schallwellenvorrichtung, Hochfrequenz-Frontend-Schaltung und Kommunikationsvorrichtung |
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