AU2003299242A1 - Low insertion loss dms filter with optimized symmetry - Google Patents

Low insertion loss dms filter with optimized symmetry

Info

Publication number
AU2003299242A1
AU2003299242A1 AU2003299242A AU2003299242A AU2003299242A1 AU 2003299242 A1 AU2003299242 A1 AU 2003299242A1 AU 2003299242 A AU2003299242 A AU 2003299242A AU 2003299242 A AU2003299242 A AU 2003299242A AU 2003299242 A1 AU2003299242 A1 AU 2003299242A1
Authority
AU
Australia
Prior art keywords
insertion loss
low insertion
dms filter
symmetry
optimized
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.)
Abandoned
Application number
AU2003299242A
Other languages
English (en)
Other versions
AU2003299242A8 (en
Inventor
Jean-Bernard Briot
Stephane Chamaly
Pierre Dufilie
Marc Solal
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.)
Rakon Temex SAS
Original Assignee
Temex SAS
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 Temex SAS filed Critical Temex SAS
Publication of AU2003299242A1 publication Critical patent/AU2003299242A1/en
Publication of AU2003299242A8 publication Critical patent/AU2003299242A8/xx
Abandoned 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
    • H03H9/0047—Balance-unbalance or balance-balance networks using surface acoustic wave devices having two acoustic tracks
    • H03H9/0066—Balance-unbalance or balance-balance networks using surface acoustic wave devices having two acoustic tracks being electrically parallel
    • H03H9/0071—Balance-unbalance or balance-balance networks 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 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
    • H03H9/0023—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
    • H03H9/0042—Balance-unbalance or balance-balance networks using surface acoustic wave devices having one acoustic track only the balanced terminals being on opposite sides 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
    • H03H9/0023—Balance-unbalance or balance-balance networks
    • H03H9/0028—Balance-unbalance or balance-balance networks using surface acoustic wave devices
    • H03H9/0047—Balance-unbalance or balance-balance networks using surface acoustic wave devices having two acoustic tracks
    • H03H9/0052—Balance-unbalance or balance-balance networks using surface acoustic wave devices having two acoustic tracks being electrically cascaded
    • H03H9/0057—Balance-unbalance or balance-balance networks using surface acoustic wave devices having two acoustic tracks being electrically cascaded 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 devices; Electromechanical resonators
    • H03H9/0023—Balance-unbalance or balance-balance networks
    • H03H9/0028—Balance-unbalance or balance-balance networks using surface acoustic wave devices
    • H03H9/0085—Balance-unbalance or balance-balance networks using surface acoustic wave devices having four acoustic tracks
    • 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
    • H03H9/46—Filters
    • H03H9/64—Filters using surface acoustic waves
    • H03H9/6423—Means for obtaining a particular transfer characteristic
    • H03H9/6433—Coupled resonator filters
    • H03H9/6436—Coupled resonator filters having one acoustic track only
    • 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
    • H03H9/644—Coupled resonator filters having two acoustic tracks
    • H03H9/6456—Coupled resonator filters having two acoustic tracks being electrically coupled
    • H03H9/6469—Coupled resonator filters having two acoustic tracks being electrically coupled via two connecting electrodes

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
AU2003299242A 2002-12-17 2003-12-16 Low insertion loss dms filter with optimized symmetry Abandoned AU2003299242A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0215999A FR2848745B1 (fr) 2002-12-17 2002-12-17 Filtre dms a faibles pertes d'insertion et symetrie optimisee
FR02/15999 2002-12-17
PCT/EP2003/051020 WO2004055981A2 (fr) 2002-12-17 2003-12-16 Filtre dms a faibles pertes d'insertion et symetrie optimisee

Publications (2)

Publication Number Publication Date
AU2003299242A1 true AU2003299242A1 (en) 2004-07-09
AU2003299242A8 AU2003299242A8 (en) 2004-07-09

Family

ID=32338885

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2003299242A Abandoned AU2003299242A1 (en) 2002-12-17 2003-12-16 Low insertion loss dms filter with optimized symmetry

Country Status (3)

Country Link
AU (1) AU2003299242A1 (fr)
FR (1) FR2848745B1 (fr)
WO (1) WO2004055981A2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004031397A1 (de) * 2004-06-29 2006-01-26 Epcos Ag Duplexer

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3254779B2 (ja) * 1993-01-05 2002-02-12 株式会社村田製作所 多電極形弾性表面波装置
DE19818038B4 (de) * 1998-04-22 2004-07-22 Epcos Ag Dualmode-Oberflächenwellenfilter
DE19938748B4 (de) * 1999-08-16 2007-02-01 Epcos Ag Dualmode-Oberflächenwellen-Filter mit verbesserter Symmetrie und erhöhter Sperrdämpfung
FR2818051B1 (fr) * 2000-12-08 2003-04-11 Thomson Csf Flitres a ondes acoustiques de surface a symetrie optimisee

Also Published As

Publication number Publication date
WO2004055981A2 (fr) 2004-07-01
FR2848745A1 (fr) 2004-06-18
FR2848745B1 (fr) 2005-04-08
AU2003299242A8 (en) 2004-07-09
WO2004055981A3 (fr) 2005-04-14

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Legal Events

Date Code Title Description
MK6 Application lapsed section 142(2)(f)/reg. 8.3(3) - pct applic. not entering national phase