KR20070105881A - 필터 및 분파기 - Google Patents
필터 및 분파기 Download PDFInfo
- Publication number
- KR20070105881A KR20070105881A KR1020070040435A KR20070040435A KR20070105881A KR 20070105881 A KR20070105881 A KR 20070105881A KR 1020070040435 A KR1020070040435 A KR 1020070040435A KR 20070040435 A KR20070040435 A KR 20070040435A KR 20070105881 A KR20070105881 A KR 20070105881A
- Authority
- KR
- South Korea
- Prior art keywords
- resonators
- filter
- resonator
- elliptical
- lower electrode
- Prior art date
Links
- 239000010408 film Substances 0.000 claims abstract description 38
- 239000000758 substrate Substances 0.000 claims abstract description 26
- 239000010409 thin film Substances 0.000 claims abstract description 24
- 230000005540 biological transmission Effects 0.000 claims description 8
- 238000010586 diagram Methods 0.000 description 6
- 239000011800 void material Substances 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 239000010949 copper Substances 0.000 description 2
- 238000001312 dry etching Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 229910052451 lead zirconate titanate Inorganic materials 0.000 description 2
- 239000010948 rhodium Substances 0.000 description 2
- 238000010897 surface acoustic wave method Methods 0.000 description 2
- 238000001039 wet etching Methods 0.000 description 2
- PIGFYZPCRLYGLF-UHFFFAOYSA-N Aluminum nitride Chemical compound [Al]#N PIGFYZPCRLYGLF-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-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
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- NKZSPGSOXYXWQA-UHFFFAOYSA-N dioxido(oxo)titanium;lead(2+) Chemical compound [Pb+2].[O-][Ti]([O-])=O NKZSPGSOXYXWQA-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 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
- 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
- 239000000463 material Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 230000002787 reinforcement 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
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 238000004544 sputter deposition Methods 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
- 230000009466 transformation Effects 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
- H03H9/46—Filters
- H03H9/54—Filters comprising resonators of piezo-electric or electrostrictive material
-
- 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 piezo-electric 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
- H03H9/15—Constructional features of resonators consisting of piezoelectric or electrostrictive material
-
- 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 piezo-electric 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
Landscapes
- 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)
Abstract
Description
Claims (9)
- 기판과, 상기 기판 상에 형성된 하부 전극과, 상기 하부 전극 상에 형성된 압전막과, 상기 압전막 상에 형성된 상부 전극을 갖는 복수의 압전 박막 공진자를 구비하고,상기 복수의 압전 박막 공진자 중 적어도 1개의 압전 박막 공진자는, 상기 압전막을 사이에 두고 상기 하부 전극과 상기 상부 전극의 대향하는 부위의 형상이, 다른 압전 박막 공진자에 대하여 스퓨리어스의 발생 주파수가 상이한 형상인 것을 특징으로 하는 필터.
- 기판과, 상기 기판 상에 형성된 하부 전극과, 상기 하부 전극 상에 형성된 압전막과, 상기 압전막 상에 형성된 상부 전극을 갖는 직렬 아암 공진자 및 병렬 아암 공진자를 구비하고,상기 직렬 아암 공진자 및 병렬 아암 공진자 중 복수의 공진자는, 상기 압전막을 사이에 두고 상기 하부 전극과 상기 상부 전극의 대향하는 부위의 형상이 타원형이며,상기 복수의 공진자 중 1개의 공진자의 상기 타원형의 축비는, 상기 복수의 공진자 중 다른 공진자의 상기 타원형의 축비와는 상이한 것을 특징으로 하는 필터.
- 제2항에 있어서,상기 복수의 공진자는 상기 직렬 아암 공진자인 것을 특징으로 하는 필터.
- 제3항에 있어서,상기 복수의 공진자는, 상기 부위의 면적이 대략 동일한 것을 특징으로 하는 필터.
- 제2항에 있어서,상기 복수의 공진자는 상기 병렬 아암 공진자인 것을 특징으로 하는 필터.
- 제5항에 있어서,상기 복수의 공진자는, 상기 부위의 면적이 대략 동일한 것을 특징으로 하는 필터.
- 제2항 내지 제6항 중 어느 한 항에 있어서,상기 복수의 공진자의 상기 타원형의 주축의 길이를 a, 부축의 길이를 b로 하였을 때,1<a/b<1.9인 것을 특징으로 하는 필터.
- 제1항 내지 제6항 중 어느 한 항에 있어서,상기 복수의 공진자의 상기 부위는, 상기 기판에 형성된 공극 상에 형성되어 있거나, 또는 상기 기판 상에 공극을 통해 형성되어 있는 것을 특징으로 하는 필터.
- 공통 단자에 접속된 송신 필터와,상기 공통 단자에 접속된 수신 필터를 구비하고,상기 송신 필터 및 상기 수신 필터 중 적어도 한 쪽은 제1항 내지 제6항 중 어느 한 항의 필터인 것을 특징으로 하는 분파기.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JPJP-P-2006-00124447 | 2006-04-27 | ||
JP2006124447A JP4181185B2 (ja) | 2006-04-27 | 2006-04-27 | フィルタおよび分波器 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20070105881A true KR20070105881A (ko) | 2007-10-31 |
KR100863871B1 KR100863871B1 (ko) | 2008-10-15 |
Family
ID=38267678
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020070040435A KR100863871B1 (ko) | 2006-04-27 | 2007-04-25 | 필터 및 분파기 |
Country Status (6)
Country | Link |
---|---|
US (1) | US7786649B2 (ko) |
EP (1) | EP1850479B1 (ko) |
JP (1) | JP4181185B2 (ko) |
KR (1) | KR100863871B1 (ko) |
CN (1) | CN101064500B (ko) |
DE (1) | DE602007012955D1 (ko) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPWO2009066380A1 (ja) * | 2007-11-21 | 2011-03-31 | 太陽誘電株式会社 | フィルタ、それを用いたデュプレクサおよびそのデュプレクサを用いた通信機 |
JP5322597B2 (ja) * | 2008-11-13 | 2013-10-23 | 太陽誘電株式会社 | 共振子、フィルタ、デュープレクサおよび電子装置 |
JP5394847B2 (ja) | 2009-08-06 | 2014-01-22 | 太陽誘電株式会社 | 分波器 |
JP2011041136A (ja) | 2009-08-17 | 2011-02-24 | Taiyo Yuden Co Ltd | 弾性波デバイスおよびその製造方法 |
JP5360432B2 (ja) * | 2011-01-27 | 2013-12-04 | 株式会社村田製作所 | 圧電デバイス |
JP5613813B2 (ja) * | 2013-10-17 | 2014-10-29 | 太陽誘電株式会社 | 分波器 |
WO2019028288A1 (en) * | 2017-08-03 | 2019-02-07 | Akoustis, Inc. | ELLIPTICAL STRUCTURE FOR VOLUME ACOUSTIC WAVE RESONATOR |
US10727811B2 (en) | 2018-06-01 | 2020-07-28 | Akoustis, Inc. | Effective coupling coefficients for strained single crystal epitaxial film bulk acoustic resonators |
US11211918B2 (en) | 2018-06-01 | 2021-12-28 | Akoustis, Inc. | Effective coupling coefficients for strained single crystal epitaxial film bulk acoustic resonators |
US11552613B2 (en) | 2019-04-19 | 2023-01-10 | Akoustis, Inc. | Resonator shapes for bulk acoustic wave (BAW) devices |
US20200357849A1 (en) * | 2019-05-07 | 2020-11-12 | Fox Enterprises, Inc. | Monolithic composite resonator devices with intrinsic mode control |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0513061Y2 (ko) * | 1987-07-27 | 1993-04-06 | ||
SE0001926D0 (sv) * | 2000-05-23 | 2000-05-23 | Lars Liljeryd | Improved spectral translation/folding in the subband domain |
JP4055885B2 (ja) * | 2001-10-29 | 2008-03-05 | Tdk株式会社 | 圧電薄膜振動素子、及びこれを用いたフィルタ |
JP3969224B2 (ja) | 2002-01-08 | 2007-09-05 | 株式会社村田製作所 | 圧電共振子及びそれを用いた圧電フィルタ・デュプレクサ・通信装置 |
JP3988864B2 (ja) * | 2002-03-26 | 2007-10-10 | Tdk株式会社 | フィルタ及びこれを用いた分波器 |
JP4024741B2 (ja) * | 2003-10-20 | 2007-12-19 | 富士通メディアデバイス株式会社 | 圧電薄膜共振子及びフィルタ |
DE60316457T2 (de) * | 2003-12-22 | 2008-06-19 | Infineon Technologies Ag | Dünnfilmresonator-Abzweigfilter und Verfahren zur Erdung dieser Filter |
JP4223428B2 (ja) | 2004-03-31 | 2009-02-12 | 富士通メディアデバイス株式会社 | フィルタおよびその製造方法 |
US7187255B2 (en) * | 2004-10-26 | 2007-03-06 | Avago Technologies Wireless Ip (Singapore) Pte. Ltd. | Arrangement of lattice filter |
JP5128077B2 (ja) | 2006-02-21 | 2013-01-23 | 宇部興産株式会社 | 薄膜圧電共振器とそれを用いた薄膜圧電フィルタ |
-
2006
- 2006-04-27 JP JP2006124447A patent/JP4181185B2/ja active Active
-
2007
- 2007-04-16 EP EP07106274A patent/EP1850479B1/en active Active
- 2007-04-16 DE DE602007012955T patent/DE602007012955D1/de active Active
- 2007-04-25 KR KR1020070040435A patent/KR100863871B1/ko active IP Right Grant
- 2007-04-26 US US11/790,530 patent/US7786649B2/en active Active
- 2007-04-27 CN CN2007101077015A patent/CN101064500B/zh active Active
Also Published As
Publication number | Publication date |
---|---|
EP1850479A3 (en) | 2008-07-30 |
EP1850479A2 (en) | 2007-10-31 |
US7786649B2 (en) | 2010-08-31 |
DE602007012955D1 (de) | 2011-04-21 |
CN101064500B (zh) | 2010-06-23 |
CN101064500A (zh) | 2007-10-31 |
EP1850479B1 (en) | 2011-03-09 |
JP4181185B2 (ja) | 2008-11-12 |
US20070252662A1 (en) | 2007-11-01 |
JP2007300216A (ja) | 2007-11-15 |
KR100863871B1 (ko) | 2008-10-15 |
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