FR2842044B1 - Filtre a ondes acoustiques de surface a double mode symetrique optimise - Google Patents

Filtre a ondes acoustiques de surface a double mode symetrique optimise

Info

Publication number
FR2842044B1
FR2842044B1 FR0208471A FR0208471A FR2842044B1 FR 2842044 B1 FR2842044 B1 FR 2842044B1 FR 0208471 A FR0208471 A FR 0208471A FR 0208471 A FR0208471 A FR 0208471A FR 2842044 B1 FR2842044 B1 FR 2842044B1
Authority
FR
France
Prior art keywords
acoustic wave
surface acoustic
wave filter
double mode
symmetrical double
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
FR0208471A
Other languages
English (en)
Other versions
FR2842044A1 (fr
Inventor
Marc Solal
Stephane Chamaly
Victor Plessky
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.)
SnapTrack Inc
Original Assignee
Thales SA
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 Thales SA filed Critical Thales SA
Priority to FR0208471A priority Critical patent/FR2842044B1/fr
Priority to PCT/FR2003/002081 priority patent/WO2004006432A2/fr
Publication of FR2842044A1 publication Critical patent/FR2842044A1/fr
Application granted granted Critical
Publication of FR2842044B1 publication Critical patent/FR2842044B1/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
    • H03H9/46—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
    • H03H9/0023—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
    • H03H9/644—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)
FR0208471A 2002-07-05 2002-07-05 Filtre a ondes acoustiques de surface a double mode symetrique optimise Expired - Fee Related FR2842044B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR0208471A FR2842044B1 (fr) 2002-07-05 2002-07-05 Filtre a ondes acoustiques de surface a double mode symetrique optimise
PCT/FR2003/002081 WO2004006432A2 (fr) 2002-07-05 2003-07-04 Filtre a ondes acoustiques de surface a double mode symetrique optimise

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0208471A FR2842044B1 (fr) 2002-07-05 2002-07-05 Filtre a ondes acoustiques de surface a double mode symetrique optimise

Publications (2)

Publication Number Publication Date
FR2842044A1 FR2842044A1 (fr) 2004-01-09
FR2842044B1 true FR2842044B1 (fr) 2005-07-15

Family

ID=29725209

Family Applications (1)

Application Number Title Priority Date Filing Date
FR0208471A Expired - Fee Related FR2842044B1 (fr) 2002-07-05 2002-07-05 Filtre a ondes acoustiques de surface a double mode symetrique optimise

Country Status (2)

Country Link
FR (1) FR2842044B1 (fr)
WO (1) WO2004006432A2 (fr)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3391346B2 (ja) * 2000-04-18 2003-03-31 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
JP3391347B2 (ja) * 2000-06-26 2003-03-31 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

Also Published As

Publication number Publication date
FR2842044A1 (fr) 2004-01-09
WO2004006432A3 (fr) 2004-04-15
WO2004006432A2 (fr) 2004-01-15

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Legal Events

Date Code Title Description
CD Change of name or company name
TP Transmission of property
PLFP Fee payment

Year of fee payment: 14

TP Transmission of property

Owner name: EPCOS AG, DE

Effective date: 20160223

PLFP Fee payment

Year of fee payment: 15

PLFP Fee payment

Year of fee payment: 16

TP Transmission of property

Owner name: SNAPTRACK, INC., US

Effective date: 20180202

PLFP Fee payment

Year of fee payment: 17

ST Notification of lapse

Effective date: 20200305