ATE297069T1 - Oberflächenwellenbauelement und kommunikationsgerät - Google Patents

Oberflächenwellenbauelement und kommunikationsgerät

Info

Publication number
ATE297069T1
ATE297069T1 AT03292065T AT03292065T ATE297069T1 AT E297069 T1 ATE297069 T1 AT E297069T1 AT 03292065 T AT03292065 T AT 03292065T AT 03292065 T AT03292065 T AT 03292065T AT E297069 T1 ATE297069 T1 AT E297069T1
Authority
AT
Austria
Prior art keywords
idt
acoustic wave
communication device
surface wave
wave component
Prior art date
Application number
AT03292065T
Other languages
English (en)
Inventor
Teruhisa Shibahara
Nagaokakyo-Shi Chome
Original Assignee
Murata Manufacturing Co
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 filed Critical Murata Manufacturing Co
Application granted granted Critical
Publication of ATE297069T1 publication Critical patent/ATE297069T1/de

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; 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 elements; Electromechanical resonators
    • H03H9/0023—Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns, or networks having balanced input and output
    • H03H9/0028—Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns, or networks having balanced input and output using surface acoustic wave devices
    • H03H9/0033—Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns, or networks having balanced input and output using surface acoustic wave devices having one acoustic track only
    • H03H9/0038—Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns, or networks having balanced input and output 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 elements; 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 elements; 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 elements; 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 elements; 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 elements; 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)
AT03292065T 2002-08-22 2003-08-21 Oberflächenwellenbauelement und kommunikationsgerät ATE297069T1 (de)

Applications Claiming Priority (2)

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

Publications (1)

Publication Number Publication Date
ATE297069T1 true ATE297069T1 (de) 2005-06-15

Family

ID=31497668

Family Applications (1)

Application Number Title Priority Date Filing Date
AT03292065T ATE297069T1 (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
WO2006068087A1 (ja) * 2004-12-20 2006-06-29 Murata Manufacturing Co., Ltd. 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
KR100840872B1 (ko) * 2005-02-16 2008-06-23 가부시키가이샤 무라타 세이사쿠쇼 밸런스형 탄성파 필터 장치
WO2007040052A1 (ja) * 2005-10-03 2007-04-12 Murata Manufacturing Co., Ltd. 弾性波フィルタ装置及びデュプレクサ
EP2066026B1 (de) * 2006-09-22 2016-04-13 Murata Manufacturing Co. Ltd. Der länge nach gekoppelte, resonatorartige filtervorrichtung für akustische oberflächenwellen
JP4631972B2 (ja) * 2006-09-28 2011-02-16 株式会社村田製作所 弾性波フィルタ装置
CN102017406B (zh) * 2008-04-25 2014-02-26 京瓷株式会社 声表面波装置和使用该装置的通信装置
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
CN103299543B (zh) 2011-11-10 2015-09-30 天工松下滤波方案日本有限公司 弹性波装置
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
US12395148B2 (en) 2022-12-20 2025-08-19 Rf360 Singapore Pte. Ltd. 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
US5790000A (en) * 1995-06-16 1998-08-04 Northern Telecom Limited Cascaded surface wave device filters providing balanced and unbalanced signal connections
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
US6815868B2 (en) * 2001-04-09 2004-11-09 Murata Manufacturing Co., Ltd. Surface acoustic wave apparatus and communication unit

Also Published As

Publication number Publication date
CN1485982A (zh) 2004-03-31
DE60300762D1 (de) 2005-07-07
JP4049034B2 (ja) 2008-02-20
KR100494049B1 (ko) 2005-06-10
KR20040018214A (ko) 2004-03-02
US6853270B2 (en) 2005-02-08
JP2004140785A (ja) 2004-05-13
CN1260882C (zh) 2006-06-21
EP1394940A1 (de) 2004-03-03
DE60300762T2 (de) 2006-03-23
US20040066254A1 (en) 2004-04-08
EP1394940B1 (de) 2005-06-01

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