FR2848745B1 - Filtre dms a faibles pertes d'insertion et symetrie optimisee - Google Patents

Filtre dms a faibles pertes d'insertion et symetrie optimisee

Info

Publication number
FR2848745B1
FR2848745B1 FR0215999A FR0215999A FR2848745B1 FR 2848745 B1 FR2848745 B1 FR 2848745B1 FR 0215999 A FR0215999 A FR 0215999A FR 0215999 A FR0215999 A FR 0215999A FR 2848745 B1 FR2848745 B1 FR 2848745B1
Authority
FR
France
Prior art keywords
dms filter
losses
low insert
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.)
Expired - Fee Related
Application number
FR0215999A
Other languages
English (en)
Other versions
FR2848745A1 (fr
Inventor
Marc Solal
Stephane Chamaly
Pierre Dufilie
Jean Bernard Briot
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
Priority to FR0215999A priority Critical patent/FR2848745B1/fr
Priority to PCT/EP2003/051020 priority patent/WO2004055981A2/fr
Priority to AU2003299242A priority patent/AU2003299242A1/en
Publication of FR2848745A1 publication Critical patent/FR2848745A1/fr
Application granted granted Critical
Publication of FR2848745B1 publication Critical patent/FR2848745B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related 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
FR0215999A 2002-12-17 2002-12-17 Filtre dms a faibles pertes d'insertion et symetrie optimisee Expired - Fee Related FR2848745B1 (fr)

Priority Applications (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
PCT/EP2003/051020 WO2004055981A2 (fr) 2002-12-17 2003-12-16 Filtre dms a faibles pertes d'insertion et symetrie optimisee
AU2003299242A AU2003299242A1 (en) 2002-12-17 2003-12-16 Low insertion loss dms filter with optimized symmetry

Applications Claiming Priority (1)

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

Publications (2)

Publication Number Publication Date
FR2848745A1 FR2848745A1 (fr) 2004-06-18
FR2848745B1 true FR2848745B1 (fr) 2005-04-08

Family

ID=32338885

Family Applications (1)

Application Number Title Priority Date Filing Date
FR0215999A Expired - Fee Related FR2848745B1 (fr) 2002-12-17 2002-12-17 Filtre dms a faibles pertes d'insertion et symetrie optimisee

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
AU2003299242A8 (en) 2004-07-09
WO2004055981A3 (fr) 2005-04-14
WO2004055981A2 (fr) 2004-07-01
FR2848745A1 (fr) 2004-06-18
AU2003299242A1 (en) 2004-07-09

Similar Documents

Publication Publication Date Title
ATE300325T1 (de) Nadelloser injektor in miniaturausführung
DE60110521D1 (de) Batterieverbinder
IS8358A (is) Truflandi RNA tvíþáttungur með slétta enda og 3'-afbrigði
DK2289539T3 (da) Zinkfrie og zinkfattige insulinpræparater med forbedret stabilitet
FR2831769B1 (fr) Facteur d'appetence et exhausteur de gout
ATE297920T1 (de) Linezolid-krystall form ii
DE60033971D1 (de) Supraleitendes mikrostreifenfilter
TW498773U (en) Swimming goggles
GB0116710D0 (en) Designing and manufacturing methods of spectacle lens and spectacle lens series
FR2836289B1 (fr) Connecteur a faible force d'insertion
NO20000233D0 (no) Oppdrettsanlegg og oppdrettskar
FR2848745B1 (fr) Filtre dms a faibles pertes d'insertion et symetrie optimisee
DE60112000D1 (de) Handgelenktotalprothese
DE50103366D1 (de) Polare Acrylathaftklebemassen
NO20033709D0 (no) Medisinske preparater omfattende Diklofenak og Ornoprostil
SG94740A1 (en) Optical element and optical pick-up
ITBO20000662A0 (it) Filtro per infusioni
SG100642A1 (en) Umpire and soldier interface
NO20011692L (no) Höyeffektstråler og dens anvendelse
DE60238681D1 (de) Implantierbare miniaturverbinder
DE10192967D2 (de) Brillenbügel
AU144889S (en) Swimming goggles
NO20011415L (no) Stolpemontert skillebryter
TW488223U (en) Structure of spectacles' case with interesting construction
FR2810170B1 (fr) Filtre coupe-bande autolimiteur

Legal Events

Date Code Title Description
ST Notification of lapse

Effective date: 20060831