JP4053958B2 - 電圧制御発振器 - Google Patents
電圧制御発振器 Download PDFInfo
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- JP4053958B2 JP4053958B2 JP2003327688A JP2003327688A JP4053958B2 JP 4053958 B2 JP4053958 B2 JP 4053958B2 JP 2003327688 A JP2003327688 A JP 2003327688A JP 2003327688 A JP2003327688 A JP 2003327688A JP 4053958 B2 JP4053958 B2 JP 4053958B2
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- 239000010409 thin film Substances 0.000 claims description 121
- 239000010408 film Substances 0.000 claims description 95
- 239000000758 substrate Substances 0.000 claims description 41
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 8
- 230000015572 biosynthetic process Effects 0.000 claims description 7
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 4
- 239000010931 gold Substances 0.000 claims description 4
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 3
- 229910052750 molybdenum Inorganic materials 0.000 claims description 3
- 239000011733 molybdenum Substances 0.000 claims description 3
- PIGFYZPCRLYGLF-UHFFFAOYSA-N Aluminum nitride Chemical compound [Al]#N PIGFYZPCRLYGLF-UHFFFAOYSA-N 0.000 claims description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 2
- 229910052737 gold Inorganic materials 0.000 claims description 2
- 229910052741 iridium Inorganic materials 0.000 claims description 2
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 claims description 2
- 229910052697 platinum Inorganic materials 0.000 claims description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 2
- 229910052721 tungsten Inorganic materials 0.000 claims description 2
- 239000010937 tungsten Substances 0.000 claims description 2
- 239000007772 electrode material Substances 0.000 description 21
- 239000000463 material Substances 0.000 description 20
- 230000010355 oscillation Effects 0.000 description 14
- 239000003990 capacitor Substances 0.000 description 12
- 230000008859 change Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000011787 zinc oxide Substances 0.000 description 4
- 229910004298 SiO 2 Inorganic materials 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 238000000059 patterning Methods 0.000 description 2
- 238000001039 wet etching Methods 0.000 description 2
- -1 (Al) Substances 0.000 description 1
- 229910002113 barium titanate Inorganic materials 0.000 description 1
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 229910052451 lead zirconate titanate Inorganic materials 0.000 description 1
- HFGPZNIAWCZYJU-UHFFFAOYSA-N lead zirconate titanate Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ti+4].[Zr+4].[Pb+2] HFGPZNIAWCZYJU-UHFFFAOYSA-N 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 229910052726 zirconium Inorganic materials 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
- H03H9/15—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
- H03H9/173—Air-gaps
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/30—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator
- H03B5/32—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
- H03B5/326—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator the resonator being an acoustic wave device, e.g. SAW or BAW device
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/30—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator
- H03B5/32—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
- H03B5/36—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator active element in amplifier being semiconductor device
- H03B5/366—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator active element in amplifier being semiconductor device and comprising means for varying the frequency by a variable voltage or current
-
- 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
- H03H9/0538—Constructional combinations of supports or holders with electromechanical or other electronic elements
- H03H9/0542—Constructional combinations of supports or holders with electromechanical or other electronic elements consisting of a lateral arrangement
-
- 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
- H03H2009/02165—Tuning
- H03H2009/02173—Tuning of film bulk acoustic resonators [FBAR]
- H03H2009/02188—Electrically tuning
- H03H2009/02204—Electrically tuning operating on an additional circuit element, e.g. applying a tuning DC voltage to a passive circuit element connected to the resonator
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/42—Piezoelectric device making
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/43—Electric condenser making
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49005—Acoustic transducer
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49117—Conductor or circuit manufacturing
- Y10T29/49124—On flat or curved insulated base, e.g., printed circuit, etc.
- Y10T29/49155—Manufacturing circuit on or in base
Description
A.P.S. Khanna, E. Gane and T. Chong, "A 2GHz voltage tunable FBAR oscillator", 2003 IEEE MTT-S Digest, pp.717-20, 2003
同一基板上の第1及び第2領域に薄膜圧電共振子及びバリキャップ素子が薄膜形成プロセスで形成されている電圧制御発振器において、
前記薄膜圧電共振子は、
前記基板上の第1領域に絶縁膜で形成され、第1の中空部を設けるように配置された第1の支持部と、
当該第1の支持部に固定支持されている積層構造であって、前記基板に前記第1の中空部を介して対向配置される下部電極、前記下部電極上に形成された第1の圧電体及び前記第1の圧電体上に形成され、前記下部電極に対向して共振部を形成する上部電極から構成される積層構造と、
を備え、
前記バリキャップ素子は、
前記基板上の第2領域に形成された固定電極及びこの固定電極上に形成された誘電膜と、
当該誘電膜に第2の空洞部を介して対向され、前記薄膜圧電共振子の前記下部電極及び上部電極のいずれか一方と電気的に接続される可動電極と、
当該可動電極が前記固定電極に対向しながら可動するように前記可動電極を支持する薄膜圧電アクチュエータであって、第1の電極、前記第1の電極上に形成された第2の圧電体及び前記第2の圧電体上に形成された第2の電極から構成される薄膜圧電アクチュエータと、
前記基板上の第2領域に絶縁膜で形成され、前記アクチュエータの一端を可動として前記アクチュエータの他端を固定支持する第2の支持部と、
を備えることを特徴とする電圧制御発振器が提供される。
(第1実施形態)
図1は本発明の第1実施形態に係る電圧制御発振器1の全体構成を示す回路図である。図1の電圧制御発振器1は、非平衡出力のコルピッツ型の発振回路であり、その等価回路が図1に示されている。
図7は本発明の第2実施形態に係る電圧制御発振器50の全体構成を示す回路図である。図7の電圧制御発振器50は、平衡出力の発振回路であり、その等価回路が図7に示されている。
Claims (6)
- 同一基板上の第1及び第2領域に薄膜圧電共振子及びバリキャップ素子が薄膜形成プロセスで形成されている電圧制御発振器において、
前記薄膜圧電共振子は、
前記基板上の第1領域に絶縁膜で形成され、第1の中空部を設けるように配置された第1の支持部と、
当該第1の支持部に固定支持されている積層構造であって、前記基板に前記第1の中空部を介して対向配置される下部電極、前記下部電極上に形成された第1の圧電体及び前記第1の圧電体上に形成され、前記下部電極に対向して共振部を形成する上部電極から構成される積層構造と、
を備え、
前記バリキャップ素子は、
前記基板上の第2領域に形成された固定電極及びこの固定電極上に形成された誘電膜と、
当該誘電膜に第2の空洞部を介して対向され、前記薄膜圧電共振子の前記下部電極及び上部電極のいずれか一方と電気的に接続される可動電極と、
当該可動電極が前記固定電極に対向しながら可動するように前記可動電極を支持する薄膜圧電アクチュエータであって、第1の電極、前記第1の電極上に形成された第2の圧電体及び前記第2の圧電体上に形成された第2の電極から構成される薄膜圧電アクチュエータと、
前記基板上の第2領域に絶縁膜で形成され、前記アクチュエータの一端を可動として前記アクチュエータの他端を固定支持する第2の支持部と、
を備えることを特徴とする電圧制御発振器。 - 前記薄膜圧電アクチュエータは、前記第2電極上に第3の圧電体が形成され、当該第3の圧電体上に第3の電極が形成されているバイモルフ型薄膜圧電アクチュエータであることを特徴とする請求項1に記載の電圧制御発振器。
- 前記薄膜圧電アクチュエータは、前記第2電極上に第3の圧電体が形成されている非対称バイモルフ型薄膜圧電アクチュエータであることを特徴とする請求項1に記載の電圧制御発振器。
- 前記第1の圧電体が0.5μm〜3μmの膜厚を有し、前記薄膜圧電共振子が1GHz〜5GHzの共振周波数を有することを特徴とする請求項1に記載の電圧制御発振器。
- 前記第1及び第2の圧電体は、窒化アルミニウム(AlN)、酸化亜鉛(ZnO)、ペロブスカイト構造を持つ強誘電体のいずれか1つからなることを特徴とする請求項1又は請求項4に記載の電圧制御発振器。
- 前記下部電極、可動電極、上部電極、第1の電極及び第2の電極は、アルミニウム(Al)、金(Au)、白金(Pt)、銅(Cu)、イリジウム(Ir)、タングステン(W)、モリブデン(Mo)のいずれか1つからなることを特徴とする請求項1に記載の電圧制御発振器。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003327688A JP4053958B2 (ja) | 2003-09-19 | 2003-09-19 | 電圧制御発振器 |
US10/935,264 US7211933B2 (en) | 2003-09-19 | 2004-09-08 | Voltage controlled oscillator |
CNA2004100790001A CN1599235A (zh) | 2003-09-19 | 2004-09-17 | 压控振荡器及其制造方法 |
US11/741,473 US7490390B2 (en) | 2003-09-19 | 2007-04-27 | Method of manufacturing a voltage controlled oscillator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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JP2003327688A JP4053958B2 (ja) | 2003-09-19 | 2003-09-19 | 電圧制御発振器 |
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JP2005094585A JP2005094585A (ja) | 2005-04-07 |
JP4053958B2 true JP4053958B2 (ja) | 2008-02-27 |
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JP2003327688A Expired - Fee Related JP4053958B2 (ja) | 2003-09-19 | 2003-09-19 | 電圧制御発振器 |
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US (2) | US7211933B2 (ja) |
JP (1) | JP4053958B2 (ja) |
CN (1) | CN1599235A (ja) |
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US7211933B2 (en) | 2007-05-01 |
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