JP6661521B2 - フィルタおよびマルチプレクサ - Google Patents
フィルタおよびマルチプレクサ Download PDFInfo
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- JP6661521B2 JP6661521B2 JP2016235918A JP2016235918A JP6661521B2 JP 6661521 B2 JP6661521 B2 JP 6661521B2 JP 2016235918 A JP2016235918 A JP 2016235918A JP 2016235918 A JP2016235918 A JP 2016235918A JP 6661521 B2 JP6661521 B2 JP 6661521B2
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- 239000010408 film Substances 0.000 claims description 90
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 7
- 229910052710 silicon Inorganic materials 0.000 description 7
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- 241001125929 Trisopterus luscus Species 0.000 description 5
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- 238000000034 method Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical group [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 230000005684 electric field Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 3
- PIGFYZPCRLYGLF-UHFFFAOYSA-N Aluminum nitride Chemical compound [Al]#N PIGFYZPCRLYGLF-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
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- 229910052707 ruthenium Inorganic materials 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 238000010897 surface acoustic wave method Methods 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 239000011800 void material Substances 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
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- 239000012212 insulator Substances 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 1
- 229910000833 kovar Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
- 239000010980 sapphire Substances 0.000 description 1
- 229910052706 scandium Inorganic materials 0.000 description 1
- SIXSYDAISGFNSX-UHFFFAOYSA-N scandium atom Chemical compound [Sc] SIXSYDAISGFNSX-UHFFFAOYSA-N 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 229910052596 spinel Inorganic materials 0.000 description 1
- 239000011029 spinel Substances 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
Images
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
- H03H9/70—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
- H03H9/02—Details
- H03H9/02007—Details of bulk acoustic wave devices
- H03H9/02086—Means for compensation or elimination of undesirable effects
-
- 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
- H03H9/05—Holders; Supports
- H03H9/0504—Holders; Supports for bulk acoustic wave devices
- H03H9/0514—Holders; Supports for bulk acoustic wave devices consisting of mounting pads or bumps
- H03H9/0523—Holders; Supports for bulk acoustic wave devices consisting of mounting pads or bumps for flip-chip mounting
-
- 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
- H03H9/205—Constructional features of resonators consisting of piezoelectric or electrostrictive material having multiple resonators
-
- 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
- H03H9/46—Filters
- H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
- H03H9/56—Monolithic crystal filters
- H03H9/566—Electric coupling means therefor
- H03H9/568—Electric coupling means therefor consisting of a ladder configuration
-
- 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
- H03H9/58—Multiple crystal filters
- H03H9/582—Multiple crystal filters implemented with thin-film techniques
- H03H9/586—Means for mounting to a substrate, i.e. means constituting the material interface confining the waves to a volume
- H03H9/587—Air-gaps
-
- 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
- H03H9/58—Multiple crystal filters
- H03H9/60—Electric coupling means therefor
- H03H9/605—Electric coupling means therefor consisting of a ladder configuration
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- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Description
浮遊容量Cfが付加される比較例1について説明する。図7(a)は、比較例1において直列分割された共振器が基板に実装された断面図、図7(b)は、図7(a)の領域Aの拡大図である。
12 下部電極
14 圧電膜
16 上部電極
18、38 空隙
20 共振領域
22 接続領域
33 グランドパターン
36 バンプ
Claims (10)
- 第1基板と、
前記第1基板の下面に設けられ、各々が圧電膜と、前記圧電膜の少なくとも一部を挟み対向する第1電極および第2電極と、を備え、前記第1電極と前記第2電極とが前記圧電膜を挟み対向する共振領域において前記圧電膜の前記第1電極から前記第2電極に向かう結晶方位は同じであり、前記共振領域間の接続領域において前記第1電極同士が接続し前記第2電極は接続せず、前記共振領域の面積は互いに略同じである第1圧電薄膜共振器および第2圧電薄膜共振器と、
上面が空隙を介し前記下面と対向するように前記第1基板を前記上面に搭載する第2基板と、
前記第2基板の上面に設けられ、前記第1圧電薄膜共振器および前記第2圧電薄膜共振器の共振領域と前記接続領域とに設けられた前記第1電極と平面視において重ならないグランドパターンと、
を具備し、
前記第1電極は、前記空隙と前記圧電膜との間に設けられ、
前記第2電極は、前記第1基板と前記圧電膜との間に設けられ、
前記第1圧電薄膜共振器および前記第2圧電薄膜共振器の第1電極はグランドに、直接接続されておらず、かつ前記第1圧電薄膜共振器および前記第2圧電薄膜共振器以外の素子を介し接続されていないフィルタ。 - 第1基板と、
前記第1基板の下面に設けられ、各々が圧電膜と、前記圧電膜の少なくとも一部を挟み対向する第1電極および第2電極と、を備え、前記第1電極と前記第2電極とが前記圧電膜を挟み対向する共振領域において前記圧電膜の前記第1電極から前記第2電極に向かう結晶方位は同じであり、前記共振領域間の接続領域において前記第1電極同士が接続し前記第2電極は接続せず、前記共振領域の面積は互いに略同じである第1圧電薄膜共振器および第2圧電薄膜共振器と、
上面が空隙を介し前記下面と対向するように前記第1基板を前記上面に搭載する第2基板と、
前記第2基板の上面に設けられ、前記第1圧電薄膜共振器および前記第2圧電薄膜共振器の共振領域と前記接続領域とに設けられた前記第1電極と平面視において重ならないグランドパターンと、
前記第1基板の下面に設けられた入力パッドおよび出力パッドと、
前記第1基板の下面に設けられ、前記入力パッドと前記出力パッドとの間を接続する直列腕とグランドとの間の並列腕に接続され、少なくとも1つの並列共振器が前記第1圧電薄膜共振器と前記第2圧電薄膜共振器とに直列に分割されている1または複数の並列共振器と、
前記第1基板の下面に設けられ、前記入力パッドと前記出力パッドとの間に直列に接続された1または複数の直列共振器と、
を具備し、
前記第1圧電薄膜共振器および前記第2圧電薄膜共振器の第1電極はグランドに、直接接続されておらず、かつ前記第1圧電薄膜共振器および前記第2圧電薄膜共振器以外の素子を介し接続されていないフィルタ。 - 前記少なくとも1つの並列共振器は、前記1または複数の並列共振器のうち最も前記入力パッドに近い並列共振器を含む請求項2記載のフィルタ。
- 前記1または複数の直列共振器および前記1または複数の並列共振器は圧電薄膜共振器であり、
前記グランドパターンは、前記1または複数の直列共振器および前記1または複数の並列共振器の少なくとも1つの共振領域の少なくとも一部と平面視において重なる請求項2または3記載のフィルタ。 - 前記第1基板の下面に設けられた複数のグランドパッドを具備し、
前記複数のグランドパッドのうち少なくとも2つのパッドはそれぞれ複数のバンプを介し1つの前記グランドパターンに接合されている請求項3または4記載のフィルタ。 - 前記第1電極は、前記第1基板と前記圧電膜との間に設けられている請求項2から5のいずれか一項記載のフィルタ。
- 前記第2電極は、前記第1基板と前記圧電膜との間に設けられている請求項2から5のいずれか一項記載のフィルタ。
- 前記接続領域において前記第1圧電薄膜共振器と前記第2圧電薄膜共振器の圧電膜は一体として設けられている請求項1から7のいずれか一項記載のフィルタ。
- 前記第1基板の下面に設けられ、圧電膜と、前記圧電膜の少なくとも一部を挟み対向する第1電極および第2電極と、を備え、前記第1電極と前記第2電極とが前記圧電膜を挟み対向する共振領域の少なくとも一部は平面視において前記グランドパターンと重なる第3圧電薄膜共振器を具備する請求項1から8のいずれか一項記載のフィルタ。
- 請求項1から9のいずれか一項記載のフィルタを含むマルチプレクサ。
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JP2016235918A JP6661521B2 (ja) | 2016-12-05 | 2016-12-05 | フィルタおよびマルチプレクサ |
US15/818,467 US10396759B2 (en) | 2016-12-05 | 2017-11-20 | Filter and multiplexer |
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JP2016235918A JP6661521B2 (ja) | 2016-12-05 | 2016-12-05 | フィルタおよびマルチプレクサ |
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JP2018093388A JP2018093388A (ja) | 2018-06-14 |
JP6661521B2 true JP6661521B2 (ja) | 2020-03-11 |
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US20160191015A1 (en) * | 2014-12-27 | 2016-06-30 | Avago Technologies General Ip (Singapore) Pte. Ltd. | Split current bulk acoustic wave (baw) resonators |
JP6454299B2 (ja) * | 2016-05-13 | 2019-01-16 | 太陽誘電株式会社 | 弾性波デバイス |
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US20180159508A1 (en) | 2018-06-07 |
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