DE60300762D1 - Oberflächenwellenbauelement und Kommunikationsgerät - Google Patents

Oberflächenwellenbauelement und Kommunikationsgerät

Info

Publication number
DE60300762D1
DE60300762D1 DE60300762T DE60300762T DE60300762D1 DE 60300762 D1 DE60300762 D1 DE 60300762D1 DE 60300762 T DE60300762 T DE 60300762T DE 60300762 T DE60300762 T DE 60300762T DE 60300762 D1 DE60300762 D1 DE 60300762D1
Authority
DE
Germany
Prior art keywords
idt
acoustic wave
communication device
surface wave
wave component
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE60300762T
Other languages
English (en)
Other versions
DE60300762T2 (de
Inventor
Teruhisa Shibahara
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Murata Manufacturing Co Ltd
Original Assignee
Murata Manufacturing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Murata Manufacturing Co Ltd filed Critical Murata Manufacturing Co Ltd
Publication of DE60300762D1 publication Critical patent/DE60300762D1/de
Application granted granted Critical
Publication of DE60300762T2 publication Critical patent/DE60300762T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • H03H9/0023—Balance-unbalance or balance-balance networks
    • H03H9/0028—Balance-unbalance or balance-balance networks using surface acoustic wave devices
    • H03H9/0033—Balance-unbalance or balance-balance networks using surface acoustic wave devices having one acoustic track only
    • H03H9/0038—Balance-unbalance or balance-balance networks using surface acoustic wave devices having one acoustic track only the balanced terminals being on the same side of the track
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/25—Constructional features of resonators 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
    • H03H9/02—Details
    • H03H9/02535—Details of surface acoustic wave devices
    • H03H9/02637—Details concerning reflective or coupling arrays
    • H03H9/02685—Grating lines having particular arrangements
    • H03H9/0274—Intra-transducers grating lines
    • H03H9/02748—Dog-legged reflectors
    • 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
    • H03H9/14544—Transducers of particular shape or position
    • H03H9/14576—Transducers whereby only the last fingers have different characteristics with respect to the other fingers, e.g. different shape, thickness or material, split finger
    • H03H9/14582—Transducers whereby only the last fingers have different characteristics with respect to the other fingers, e.g. different shape, thickness or material, split finger the last fingers having a different pitch
    • 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
    • H03H9/14544—Transducers of particular shape or position
    • H03H9/14588—Horizontally-split transducers
    • 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
    • H03H9/14529—Distributed tap
    • H03H9/14532—Series weighting; Transverse weighting
    • 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
    • H03H9/14544—Transducers of particular shape or position
    • H03H9/14547—Fan shaped; Tilted; Shifted; Slanted; Tapered; Arched; Stepped finger transducers

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
DE60300762T 2002-08-22 2003-08-21 Oberflächenwellenbauelement und Kommunikationsgerät Expired - Lifetime DE60300762T2 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2002242260 2002-08-22
JP2002242260 2002-08-22
JP2003184433 2003-06-27
JP2003184433A JP4049034B2 (ja) 2002-08-22 2003-06-27 弾性表面波フィルタ、通信装置

Publications (2)

Publication Number Publication Date
DE60300762D1 true DE60300762D1 (de) 2005-07-07
DE60300762T2 DE60300762T2 (de) 2006-03-23

Family

ID=31497668

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60300762T Expired - Lifetime DE60300762T2 (de) 2002-08-22 2003-08-21 Oberflächenwellenbauelement und Kommunikationsgerät

Country Status (7)

Country Link
US (1) US6853270B2 (de)
EP (1) EP1394940B1 (de)
JP (1) JP4049034B2 (de)
KR (1) KR100494049B1 (de)
CN (1) CN1260882C (de)
AT (1) ATE297069T1 (de)
DE (1) DE60300762T2 (de)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7112912B2 (en) * 2004-03-16 2006-09-26 Tdk Corporation Surface acoustic wave device and branching filter
DE102004020183B4 (de) 2004-04-22 2015-12-03 Epcos Ag Oberflächenwellen-Resonatorfilter mit longitudinal gekoppelten Wandlern
JP4069917B2 (ja) * 2004-09-15 2008-04-02 株式会社村田製作所 バランス型弾性表面波フィルタ
JPWO2006068087A1 (ja) 2004-12-20 2008-06-12 株式会社村田製作所 バランス型弾性波フィルタ装置
JP2006254410A (ja) * 2005-02-10 2006-09-21 Murata Mfg Co Ltd バランス型弾性波フィルタ
US7683735B2 (en) 2005-02-16 2010-03-23 Murata Manufacturing Co., Ltd. Balanced acoustic wave filter
EP1852973A4 (de) * 2005-02-16 2011-09-07 Murata Manufacturing Co Symmetrischer oberflächenakustikwellenfilter
CN101091310B (zh) * 2005-10-03 2012-06-13 株式会社村田制作所 弹性波滤波装置及双工器
JP4670956B2 (ja) * 2006-09-22 2011-04-13 株式会社村田製作所 縦結合共振子型弾性波フィルタ装置
WO2008038481A1 (fr) * 2006-09-28 2008-04-03 Murata Manufacturing Co., Ltd. Filtre d'onde acoustique
JP5158725B2 (ja) * 2008-04-25 2013-03-06 京セラ株式会社 弾性表面波装置およびそれを用いた通信装置
JP5239741B2 (ja) * 2008-10-24 2013-07-17 セイコーエプソン株式会社 弾性表面波共振子、弾性表面波発振器および弾性表面波モジュール装置
JP4900420B2 (ja) * 2009-05-27 2012-03-21 株式会社村田製作所 弾性波装置
JP2011066747A (ja) * 2009-09-18 2011-03-31 Panasonic Corp 弾性波フィルタ
JP5662130B2 (ja) * 2010-12-17 2015-01-28 京セラ株式会社 弾性波装置
WO2013069225A1 (ja) 2011-11-10 2013-05-16 パナソニック株式会社 弾性波装置
JP5862761B2 (ja) 2012-03-22 2016-02-16 株式会社村田製作所 縦結合共振子型弾性表面波フィルタ
JP2015119450A (ja) * 2013-12-20 2015-06-25 株式会社村田製作所 弾性表面波装置、通信装置
DE102015107231B4 (de) * 2015-05-08 2021-09-16 Snaptrack, Inc. Kaskadierter Resonator
JP6267250B2 (ja) * 2016-02-25 2018-01-24 株式会社Ｓｕｂａｒｕ 油圧回路の異常検知装置、及び、油圧回路の異常検知方法
US10395542B2 (en) * 2016-03-28 2019-08-27 Cisco Technology, Inc. Drone traffic engineering
US20240204747A1 (en) * 2022-12-20 2024-06-20 RF360 Europe GmbH Double-Mode Surface-Acoustic-Wave (DMS) Filter Having A Transition Region with A Partly Uniform Geometric Property

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US21195A (en) * 1858-08-17 Apparatus for heating- mash-tubs
US4759562A (en) * 1986-05-09 1988-07-26 Vinyard Lillian L Walker conversions for wheel chairs
US5451193A (en) * 1992-08-12 1995-09-19 Pickard; Raleigh H. Combined wheelchair and walker
US5224731A (en) * 1992-09-08 1993-07-06 Johnson Candace L Combination wheel chair and walker
US5605345A (en) * 1993-10-21 1997-02-25 Brookefield Hunter Incorporated Wheeled apparatus for use as walker and wheelchair
US5835990A (en) * 1995-06-16 1998-11-10 Northern Telecom Limited Longitudinally coupled double mode surface wave resonators
US5558358A (en) * 1995-06-19 1996-09-24 Johnson; Candace L. Combination wheelchair and walker
JPH1197966A (ja) * 1997-09-22 1999-04-09 Tdk Corp 弾性表面波フィルタ
US5772234A (en) * 1997-09-23 1998-06-30 Luo; Chung-I Configuring frame of walker
DE19818826B4 (de) * 1998-04-27 2004-11-04 Epcos Ag Oberflächenwellenfilter mit erhöhter Bandbreite
US6378883B1 (en) * 2000-01-11 2002-04-30 Aaron J. Epstein Motorized walker/wheelchair and method
US6338493B1 (en) * 2000-04-19 2002-01-15 Eli Wohlgemuth Walker chair
TW483238B (en) * 2000-06-30 2002-04-11 Fujitsu Media Devices Ltd Surface acoustic wave device
JP3687566B2 (ja) * 2000-07-25 2005-08-24 株式会社村田製作所 縦結合共振子型弾性表面波フィルタ
EP1249934B1 (de) * 2001-04-09 2013-07-31 Murata Manufacturing Co., Ltd. Akustische Oberflächenwellenanordnung und Kommunikationseinheit

Also Published As

Publication number Publication date
KR100494049B1 (ko) 2005-06-10
JP2004140785A (ja) 2004-05-13
EP1394940A1 (de) 2004-03-03
ATE297069T1 (de) 2005-06-15
JP4049034B2 (ja) 2008-02-20
CN1485982A (zh) 2004-03-31
DE60300762T2 (de) 2006-03-23
KR20040018214A (ko) 2004-03-02
US6853270B2 (en) 2005-02-08
CN1260882C (zh) 2006-06-21
EP1394940B1 (de) 2005-06-01
US20040066254A1 (en) 2004-04-08

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