KR19990023942A - 탄성표면파 장치 - Google Patents
탄성표면파 장치 Download PDFInfo
- Publication number
- KR19990023942A KR19990023942A KR1019980034919A KR19980034919A KR19990023942A KR 19990023942 A KR19990023942 A KR 19990023942A KR 1019980034919 A KR1019980034919 A KR 1019980034919A KR 19980034919 A KR19980034919 A KR 19980034919A KR 19990023942 A KR19990023942 A KR 19990023942A
- Authority
- KR
- South Korea
- Prior art keywords
- acoustic wave
- surface acoustic
- wave device
- layer
- metal film
- Prior art date
Links
- 238000010897 surface acoustic wave method Methods 0.000 title claims abstract description 93
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 75
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 75
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 72
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 71
- 239000010937 tungsten Substances 0.000 claims abstract description 71
- 229910052751 metal Inorganic materials 0.000 claims abstract description 59
- 239000002184 metal Substances 0.000 claims abstract description 59
- 238000010030 laminating Methods 0.000 claims abstract description 14
- 239000000758 substrate Substances 0.000 claims description 28
- 229910013641 LiNbO 3 Inorganic materials 0.000 claims description 11
- 239000010410 layer Substances 0.000 description 108
- 239000010408 film Substances 0.000 description 48
- 238000005530 etching Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 238000001020 plasma etching Methods 0.000 description 6
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 6
- 238000001039 wet etching Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 5
- 229910052737 gold Inorganic materials 0.000 description 5
- 239000010931 gold Substances 0.000 description 5
- 229910001385 heavy metal Inorganic materials 0.000 description 5
- 238000003780 insertion Methods 0.000 description 5
- 230000037431 insertion Effects 0.000 description 5
- 229920002120 photoresistant polymer Polymers 0.000 description 5
- 239000007772 electrode material Substances 0.000 description 4
- 229910052715 tantalum Inorganic materials 0.000 description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 229910052697 platinum Inorganic materials 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
- 238000004544 sputter deposition Methods 0.000 description 3
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000000206 photolithography Methods 0.000 description 2
- 238000001878 scanning electron micrograph Methods 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- H03H9/64—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
- H03H9/46—Filters
- H03H9/64—Filters using surface acoustic waves
- H03H9/6423—Means for obtaining a particular transfer characteristic
- H03H9/6433—Coupled resonator filters
- H03H9/6483—Ladder SAW 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
- H03H9/125—Driving means, e.g. electrodes, coils
- H03H9/145—Driving means, e.g. electrodes, coils for networks using surface acoustic waves
- H03H9/14517—Means for weighting
- H03H9/1452—Means for weighting by finger overlap length, apodisation
-
- 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
- H03H9/145—Driving means, e.g. electrodes, coils for networks using surface acoustic waves
- H03H9/14538—Formation
- H03H9/14541—Multilayer finger or busbar electrode
-
- 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
- H03H9/058—Holders; Supports for surface acoustic wave devices
-
- 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
- H03H9/10—Mounting in enclosures
- H03H9/1064—Mounting in enclosures for surface acoustic wave [SAW] devices
-
- 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
- H03H9/131—Driving means, e.g. electrodes, coils for networks consisting of piezoelectric or electrostrictive materials consisting of a multilayered structure
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
Abstract
Description
Claims (20)
- 탄성표면파 장치에 있어서,표면파기판과;상기한 표면파기판 위에 형성되고, 텅스텐층과 알루미늄층을 포함하는 인터디지탈 트랜스듀서를 포함하는 것을 특징으로 하는 탄성표면파 장치.
- 제 1항에 있어서, 상기한 텅스텐층과 알루미늄층이 적층되어 일체의 적층금속막을 구성함을 특징으로 하는 탄성표면파 장치.
- 제 1항에 있어서, 상기한 알루미늄층은 표면파기판 위에 형성되고, 상기한 텅스텐층은 알루미늄층 위에 형성됨을 특징으로 하는 탄성표면파 장치.
- 제 1항에 있어서, 상기한 텅스텐층은 표면파기판 위에 형성되고, 상기한 알루미늄층은 텅스텐층 위에 형성됨을 특징으로 하는 탄성표면파 장치.
- 제 1항에 있어서, 상기한 인터디지탈 트랜스듀서의 양측에 배치된 한쌍의 반사기를 더 포함하는 것을 특징으로 하는 탄성표면파 장치.
- 제 5항에 있어서, 상기한 반사기들 중 적어도 하나가 텅스텐층과 알루미늄층을 포함함을 특징으로 하는 탄성표면파 장치.
- 제 6항에 있어서, 상기한 적어도 하나의 반사기의 상기한 텅스텐층과 알루미늄층이 적층되어 일체의 적층금속막을 구성함을 특징으로 하는 탄성표면파 장치.
- 제 5항에 있어서, 상기한 반사기들 각각이 텅스텐층과 알루미늄층을 포함함을 특징으로 하는 탄성표면파 장치.
- 제 8항에 있어서, 상기한 반사기들 각각의 상기한 텅스텐층과 알루미늄층이 적층되어 일체의 적층금속막을 구성함을 특징으로 하는 탄성표면파 장치.
- 제 1항에 있어서, 상기한 표면파기판이 Y-컷, X-전파의 LiNbO3기판임을 특징으로 하는 탄성표면파 장치.
- 제 10항에 있어서, 탄성표면파 장치가 러브파(Love wave)를 이용하도록 구성된 것임을 특징으로 하는 탄성표면파 장치.
- 제 1항에 있어서, 상기한 인터디지탈 트랜스듀서에 접속되고 상기한 표면파기판 위에 형성된 본딩 전극(bonding electrode)을 더 포함하며;상기한 본딩 전극이 텅스텐층과 알루미늄층을 포함함을 특징으로 하는 탄성표면파 장치.
- 제 12항에 있어서, 상기한 본딩 전극의 상기한 텅스텐층과 알루미늄층이 적층되어 일체의 적층금속막을 구성함을 특징으로 하는 탄성표면파 장치.
- 제 1항에 있어서, 상기한 인터디지탈 트랜스듀서에 접속되고 상기한 표면파기판 위에 형성된 본딩 전극을 더 포함하며;상기한 본딩 전극이 알루미늄으로 된 상층(top layer)을 구비함을 특징으로 하는 탄성표면파 장치.
- 제 1항에 있어서, 상기한 인터디지탈 트랜스듀서에 접속되고 상기한 표면파기판 위에 형성된 본딩 전극을 더 포함하며;상기한 본딩 전극이 알루미늄으로 된 상층과, 알루미늄층과 텅스텐층이 적층되어 구성된 적층금속막을 포함하며; 상기한 적층금속막의 알루미늄층이 표면파기판 위에 배치되고, 상기한 알루미늄으로 된 상층이 상기한 적층금속막의 텅스텐층 위에 배치되도록 구성됨을 특징으로 하는 탄성표면파 장치.
- 탄성표면파 장치에 있어서,표면파기판과;상기한 표면파기판 위에 형성된 인터디지탈 트랜스듀서; 및상기한 인터디지탈 트랜스듀서의 양측에 배치된 적어도 두 개의 반사기들을 포함하며,상기한 적어도 두 개의 반사기들 중 적어도 하나가 텅스텐층과 알루미늄층을 포함함을 특징으로 하는 탄성표면파 장치.
- 제 16항에 있어서, 상기한 텅스텐층과 알루미늄층이 적층되어 일체의 적층금속막을 구성함을 특징으로 하는 탄성표면파 장치.
- 제 16항에 있어서, 상기한 적어도 두 개의 반사기들 각각이 텅스텐층과 알루미늄층을 포함함을 특징으로 하는 탄성표면파 장치.
- 제 18항에 있어서, 상기한 적어도 두 개의 반사기들 각각의 상기한 텅스텐층과 알루미늄층이 적층되어 일체의 적층금속막을 구성함을 특징으로 하는 탄성표면파 장치.
- 제 16항에 있어서, 상기한 인터디지탈 트랜스듀서는 알루미늄으로 구성됨을 특징으로 하는 탄성표면파 장치.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9249531A JPH1174751A (ja) | 1997-08-28 | 1997-08-28 | 弾性表面波装置 |
JP9-249531 | 1997-08-28 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR19990023942A true KR19990023942A (ko) | 1999-03-25 |
KR100312001B1 KR100312001B1 (ko) | 2001-12-12 |
Family
ID=17194376
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019980034919A KR100312001B1 (ko) | 1997-08-28 | 1998-08-27 | 탄성표면파장치 |
Country Status (6)
Country | Link |
---|---|
US (1) | US6271617B1 (ko) |
JP (1) | JPH1174751A (ko) |
KR (1) | KR100312001B1 (ko) |
CN (1) | CN1144360C (ko) |
DE (1) | DE19839247B4 (ko) |
TW (1) | TW425758B (ko) |
Families Citing this family (30)
Publication number | Priority date | Publication date | Assignee | Title |
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JP3317273B2 (ja) * | 1998-08-25 | 2002-08-26 | 株式会社村田製作所 | 表面波共振子、フィルタ、共用器、通信機装置 |
JP3391309B2 (ja) * | 1999-09-02 | 2003-03-31 | 株式会社村田製作所 | 表面波装置及び通信機装置 |
US6452305B1 (en) * | 2000-03-14 | 2002-09-17 | Motorola, Inc. | High power surface acoustic wave device |
JP3402311B2 (ja) | 2000-05-19 | 2003-05-06 | 株式会社村田製作所 | 弾性表面波装置 |
JP3414371B2 (ja) | 2000-07-31 | 2003-06-09 | 株式会社村田製作所 | 弾性表面波装置及びその製造方法 |
JP3926633B2 (ja) * | 2001-06-22 | 2007-06-06 | 沖電気工業株式会社 | Sawデバイス及びその製造方法 |
DE10135871B4 (de) * | 2001-07-24 | 2012-10-25 | Epcos Ag | Wandler für Oberflächenwellen mit verbesserter Unterdrückung störender Anregung |
US6937114B2 (en) | 2001-12-28 | 2005-08-30 | Matsushita Electric Industrial Co., Ltd. | Surface acoustic wave device, electronic component using the device, and composite module |
JPWO2003088483A1 (ja) * | 2002-04-15 | 2005-08-25 | 松下電器産業株式会社 | 弾性表面波デバイスおよびそれを用いた移動体通信機器並びにセンサー |
JP2004260793A (ja) * | 2003-02-04 | 2004-09-16 | Murata Mfg Co Ltd | 弾性表面波フィルタ |
DE102004037819B4 (de) * | 2004-08-04 | 2021-12-16 | Snaptrack, Inc. | Elektroakustisches Bauelement mit geringen Verlusten |
WO2008056697A1 (fr) * | 2006-11-08 | 2008-05-15 | Panasonic Corporation | Résonateur d'onde acoustique de surface |
EP1962424A4 (en) * | 2006-12-27 | 2013-04-03 | Panasonic Corp | ACOUSTIC SURFACE WAVE RESERATOR, ACOUSTIC SURFACE WAVE FILTER USING THE ACOUSTIC SURFACE WAVE RESONATOR AND ANTENNA DUPLEXER |
JPWO2012127793A1 (ja) * | 2011-03-22 | 2014-07-24 | パナソニック株式会社 | 弾性波素子 |
JP5716050B2 (ja) * | 2013-03-27 | 2015-05-13 | スカイワークス・パナソニック フィルターソリューションズ ジャパン株式会社 | 弾性波素子 |
JP6385690B2 (ja) * | 2014-03-05 | 2018-09-05 | 太陽誘電株式会社 | 弾性波デバイス及びその製造方法 |
CN107819448B (zh) * | 2017-09-28 | 2020-10-02 | 扬州大学 | 频率可调声表面波谐振器 |
CN111108689B (zh) * | 2017-09-29 | 2023-09-26 | 株式会社村田制作所 | 多工器、高频前端电路以及通信装置 |
US20210328574A1 (en) * | 2020-04-20 | 2021-10-21 | Resonant Inc. | Small transversely-excited film bulk acoustic resonators with enhanced q-factor |
US20220116015A1 (en) | 2018-06-15 | 2022-04-14 | Resonant Inc. | Transversely-excited film bulk acoustic resonator with optimized electrode thickness, mark, and pitch |
US11929731B2 (en) | 2018-02-18 | 2024-03-12 | Murata Manufacturing Co., Ltd. | Transversely-excited film bulk acoustic resonator with optimized electrode mark, and pitch |
US11323096B2 (en) | 2018-06-15 | 2022-05-03 | Resonant Inc. | Transversely-excited film bulk acoustic resonator with periodic etched holes |
US11264966B2 (en) | 2018-06-15 | 2022-03-01 | Resonant Inc. | Solidly-mounted transversely-excited film bulk acoustic resonator with diamond layers in Bragg reflector stack |
US11349452B2 (en) | 2018-06-15 | 2022-05-31 | Resonant Inc. | Transversely-excited film bulk acoustic filters with symmetric layout |
US11811391B2 (en) | 2020-05-04 | 2023-11-07 | Murata Manufacturing Co., Ltd. | Transversely-excited film bulk acoustic resonator with etched conductor patterns |
US11271539B1 (en) | 2020-08-19 | 2022-03-08 | Resonant Inc. | Transversely-excited film bulk acoustic resonator with tether-supported diaphragm |
US11476834B2 (en) | 2020-10-05 | 2022-10-18 | Resonant Inc. | Transversely-excited film bulk acoustic resonator matrix filters with switches in parallel with sub-filter shunt capacitors |
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US11658639B2 (en) | 2020-10-05 | 2023-05-23 | Murata Manufacturing Co., Ltd. | Transversely-excited film bulk acoustic resonator matrix filters with noncontiguous passband |
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US4544857A (en) * | 1983-08-29 | 1985-10-01 | Nec Corporation | High electromechanical-coupling coefficient surface acoustic wave device |
GB2186456B (en) * | 1986-01-13 | 1989-11-08 | Hitachi Ltd | Surface acoustic wave device |
JPS63260213A (ja) | 1986-09-12 | 1988-10-27 | Hiroshi Shimizu | 高結合ラブ波型saw基板を用いた共振子 |
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JPH0314305A (ja) * | 1989-06-13 | 1991-01-23 | Murata Mfg Co Ltd | 弾性表面波装置の製造方法 |
US5453652A (en) | 1992-12-17 | 1995-09-26 | Matsushita Electric Industrial Co., Ltd. | Surface acoustic wave device with interdigital transducers formed on a holding substrate thereof and a method of producing the same |
JP3173300B2 (ja) * | 1994-10-19 | 2001-06-04 | 株式会社村田製作所 | ラブ波デバイス |
JP3731611B2 (ja) | 1995-03-10 | 2006-01-05 | 株式会社村田製作所 | 表面波デバイス |
JPH0969748A (ja) * | 1995-09-01 | 1997-03-11 | Matsushita Electric Ind Co Ltd | Sawデバイスおよびその製造方法 |
JPH09223944A (ja) * | 1995-12-13 | 1997-08-26 | Fujitsu Ltd | 弾性表面波素子及びその製造方法 |
JPH10247835A (ja) * | 1997-03-03 | 1998-09-14 | Kokusai Electric Co Ltd | ラブ波型弾性表面波デバイス |
-
1997
- 1997-08-28 JP JP9249531A patent/JPH1174751A/ja active Pending
-
1998
- 1998-08-24 TW TW087113897A patent/TW425758B/zh not_active IP Right Cessation
- 1998-08-26 US US09/140,509 patent/US6271617B1/en not_active Expired - Lifetime
- 1998-08-27 KR KR1019980034919A patent/KR100312001B1/ko not_active IP Right Cessation
- 1998-08-28 DE DE19839247A patent/DE19839247B4/de not_active Expired - Lifetime
- 1998-08-28 CN CNB981185185A patent/CN1144360C/zh not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
CN1144360C (zh) | 2004-03-31 |
JPH1174751A (ja) | 1999-03-16 |
US6271617B1 (en) | 2001-08-07 |
TW425758B (en) | 2001-03-11 |
CN1215252A (zh) | 1999-04-28 |
DE19839247A1 (de) | 1999-03-04 |
DE19839247B4 (de) | 2008-01-31 |
KR100312001B1 (ko) | 2001-12-12 |
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