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WO2008031409A3 - Mit oberflächenwellen arbeitendes elektrisches bauelement - Google Patents

Mit oberflächenwellen arbeitendes elektrisches bauelement Download PDF

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Publication number
WO2008031409A3
WO2008031409A3 PCT/DE2007/001612 DE2007001612W WO2008031409A3 WO 2008031409 A3 WO2008031409 A3 WO 2008031409A3 DE 2007001612 W DE2007001612 W DE 2007001612W WO 2008031409 A3 WO2008031409 A3 WO 2008031409A3
Authority
WO
WIPO (PCT)
Prior art keywords
transducers
acoustic wave
surface acoustic
wave component
transducer
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.)
Ceased
Application number
PCT/DE2007/001612
Other languages
English (en)
French (fr)
Other versions
WO2008031409A2 (de
Inventor
Stefan Freisleben
Ulrich Knauer
Guenter Kovacs
Stefan Berek
Andreas Waldherr
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.)
TDK Electronics AG
Original Assignee
Epcos AG
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 Epcos AG filed Critical Epcos AG
Publication of WO2008031409A2 publication Critical patent/WO2008031409A2/de
Publication of WO2008031409A3 publication Critical patent/WO2008031409A3/de
Anticipated expiration legal-status Critical
Ceased 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 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
    • H03H9/0047—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 two acoustic tracks
    • H03H9/0066—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 two acoustic tracks being electrically parallel
    • H03H9/0071—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 two acoustic tracks being electrically parallel the balanced terminals being on the same side of the tracks
    • 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
    • H03H9/46—Filters
    • H03H9/64—Filters using surface acoustic waves
    • H03H9/6423—Means for obtaining a particular transfer characteristic
    • H03H9/6433—Coupled resonator filters

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)

Abstract

Es wird ein mit Oberflächenwellen arbeitendes elektrisches Bauelement mit einer Mehrwandler-Anordnung angegeben, das gekreuzte Leiterbahnen (211, 221) aufweist. Das Bauelement ist vorzugsweise ein Resonator-Filter mit einer durch Reflektoren begrenzten akustischen Spur (100). In einer Variante weist ein Wandler (112) einen V-Split auf, wobei Teilwandler (112a, 112b) dieses Wandlers jeweils mit einem weiteren Wandler (111, 113) derselben Wandleranordnung leitend verbunden sind. In einer weiteren Variante sind vier Wandler (S1, S2, L1, L2) in einer Brückenschaltung verschaltet, wobei ein erstes Wandlerpaar (S1, S2) in einer ersten Inline-Wandleranordnung (100') und ein zweites Wandlerpaar (L1, L2) in einer zweiten Inline-Wandleranordnung (200') angeordnet ist, und wobei die Wandlerpaare mittels einander kreuzender Leiterbahnen (211, 221) leitend miteinander verbunden sind.
PCT/DE2007/001612 2006-09-11 2007-09-07 Mit oberflächenwellen arbeitendes elektrisches bauelement Ceased WO2008031409A2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006042546.4 2006-09-11
DE200610042546 DE102006042546A1 (de) 2006-09-11 2006-09-11 Mit Oberflächenwellen arbeitendes elektrisches Bauelement

Publications (2)

Publication Number Publication Date
WO2008031409A2 WO2008031409A2 (de) 2008-03-20
WO2008031409A3 true WO2008031409A3 (de) 2008-05-29

Family

ID=39049018

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2007/001612 Ceased WO2008031409A2 (de) 2006-09-11 2007-09-07 Mit oberflächenwellen arbeitendes elektrisches bauelement

Country Status (2)

Country Link
DE (1) DE102006042546A1 (de)
WO (1) WO2008031409A2 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010052969A1 (ja) * 2008-11-04 2010-05-14 株式会社村田製作所 弾性波フィルタ装置および、それを備えるモジュール
US7939989B2 (en) 2009-09-22 2011-05-10 Triquint Semiconductor, Inc. Piston mode acoustic wave device and method providing a high coupling factor
US8294331B2 (en) 2009-09-22 2012-10-23 Triquint Semiconductor, Inc. Acoustic wave guide device and method for minimizing trimming effects and piston mode instabilities
JP5936393B2 (ja) * 2011-03-07 2016-06-22 トライクイント・セミコンダクター・インコーポレイテッドＴｒｉＱｕｉｎｔ Ｓｅｍｉｃｏｎｄｕｃｔｏｒ，Ｉｎｃ． トリミング効果とピストンモードでの不安定性を最小化する音響波導波装置および方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10007178A1 (de) * 2000-02-17 2001-08-23 Epcos Ag Oberflächenwellenfilter mit Reaktanzelementen
DE10009517A1 (de) * 2000-02-29 2001-08-30 Epcos Ag Interdigitalwandler mit verteilter Anregung
WO2006003787A1 (ja) * 2004-06-30 2006-01-12 Murata Manufacturing Co., Ltd. バランス型弾性波フィルタ及び弾性波フィルタ装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3886504A (en) * 1974-05-20 1975-05-27 Texas Instruments Inc Acoustic surface wave resonator devices
JPH03283710A (ja) * 1990-03-30 1991-12-13 Toshiba Corp 弾性表面波共振子
DE10012129A1 (de) * 2000-03-13 2001-10-11 Epcos Ag Duplexer mit verbesserter Unterdrückung von Harmonischen
DE10304470B4 (de) * 2003-02-04 2013-09-05 Epcos Ag Mit akustischen Oberflächenwellen arbeitendes elektronisches Bauelement
JP4222197B2 (ja) * 2003-02-24 2009-02-12 株式会社村田製作所 弾性表面波フィルタ、通信機
DE10352640B4 (de) * 2003-11-11 2014-02-13 Epcos Ag DMS-Filter

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10007178A1 (de) * 2000-02-17 2001-08-23 Epcos Ag Oberflächenwellenfilter mit Reaktanzelementen
DE10009517A1 (de) * 2000-02-29 2001-08-30 Epcos Ag Interdigitalwandler mit verteilter Anregung
WO2006003787A1 (ja) * 2004-06-30 2006-01-12 Murata Manufacturing Co., Ltd. バランス型弾性波フィルタ及び弾性波フィルタ装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
KOVACS G ET AL: "DMS filter with reduced resistive losses", ULTRASONICS SYMPOSIUM, 2004 IEEE MONTREAL, CANADA 23-27 AUG. 2004, PISCATAWAY, NJ, USA,IEEE, 23 August 2004 (2004-08-23), pages 294 - 297, XP010784093, ISBN: 0-7803-8412-1 *

Also Published As

Publication number Publication date
WO2008031409A2 (de) 2008-03-20
DE102006042546A1 (de) 2008-03-27

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