FR2818051B1 - SURFACE ACOUSTIC WAVE FLITTERS WITH OPTIMIZED SYMMETRY - Google Patents

SURFACE ACOUSTIC WAVE FLITTERS WITH OPTIMIZED SYMMETRY

Info

Publication number
FR2818051B1
FR2818051B1 FR0015989A FR0015989A FR2818051B1 FR 2818051 B1 FR2818051 B1 FR 2818051B1 FR 0015989 A FR0015989 A FR 0015989A FR 0015989 A FR0015989 A FR 0015989A FR 2818051 B1 FR2818051 B1 FR 2818051B1
Authority
FR
France
Prior art keywords
flitters
acoustic wave
surface acoustic
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
FR0015989A
Other languages
French (fr)
Other versions
FR2818051A1 (en
Inventor
Marc Solal
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
Thomson CSF 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 Thomson CSF SA filed Critical Thomson CSF SA
Priority to FR0015989A priority Critical patent/FR2818051B1/en
Priority to AU2002217214A priority patent/AU2002217214A1/en
Priority to PCT/FR2001/003885 priority patent/WO2002047264A1/en
Publication of FR2818051A1 publication Critical patent/FR2818051A1/en
Application granted granted Critical
Publication of FR2818051B1 publication Critical patent/FR2818051B1/en
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
    • H03H9/02—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
    • 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
    • H03H9/02535—Details of surface acoustic wave devices
    • H03H9/02818—Means for compensation or elimination of undesirable effects
    • H03H9/02874—Means for compensation or elimination of undesirable effects of direct coupling between input and output transducers

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
FR0015989A 2000-12-08 2000-12-08 SURFACE ACOUSTIC WAVE FLITTERS WITH OPTIMIZED SYMMETRY Expired - Fee Related FR2818051B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR0015989A FR2818051B1 (en) 2000-12-08 2000-12-08 SURFACE ACOUSTIC WAVE FLITTERS WITH OPTIMIZED SYMMETRY
AU2002217214A AU2002217214A1 (en) 2000-12-08 2001-12-07 Surface acoustic waves filters with optimised symmetry
PCT/FR2001/003885 WO2002047264A1 (en) 2000-12-08 2001-12-07 Surface acoustic waves filters with optimised symmetry

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0015989A FR2818051B1 (en) 2000-12-08 2000-12-08 SURFACE ACOUSTIC WAVE FLITTERS WITH OPTIMIZED SYMMETRY

Publications (2)

Publication Number Publication Date
FR2818051A1 FR2818051A1 (en) 2002-06-14
FR2818051B1 true FR2818051B1 (en) 2003-04-11

Family

ID=8857414

Family Applications (1)

Application Number Title Priority Date Filing Date
FR0015989A Expired - Fee Related FR2818051B1 (en) 2000-12-08 2000-12-08 SURFACE ACOUSTIC WAVE FLITTERS WITH OPTIMIZED SYMMETRY

Country Status (3)

Country Link
AU (1) AU2002217214A1 (en)
FR (1) FR2818051B1 (en)
WO (1) WO2002047264A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6828879B2 (en) * 2001-02-16 2004-12-07 Sanyo Electric Co., Ltd. Longitudinal coupled multiple mode surface acoustic wave filter
FR2848745B1 (en) * 2002-12-17 2005-04-08 Temex Sa DMS FILTER WITH LOW INSERT LOSSES AND OPTIMIZED SYMMETRY
DE102016125795A1 (en) * 2016-12-28 2018-06-28 Snaptrack, Inc. Electro-acoustic filter and duplexer with electro-acoustic filter

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2306821B (en) * 1995-11-03 2000-05-31 Advanced Saw Prod Sa Electro-acoustic device
JP3239064B2 (en) * 1996-05-28 2001-12-17 富士通株式会社 Surface acoustic wave device
JP3224202B2 (en) * 1996-11-28 2001-10-29 富士通株式会社 Surface acoustic wave device

Also Published As

Publication number Publication date
AU2002217214A1 (en) 2002-06-18
FR2818051A1 (en) 2002-06-14
WO2002047264A1 (en) 2002-06-13

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Legal Events

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

Year of fee payment: 16

PLFP Fee payment

Year of fee payment: 17

PLFP Fee payment

Year of fee payment: 18

TP Transmission of property

Owner name: SNAPTRACK, INC., US

Effective date: 20180228

PLFP Fee payment

Year of fee payment: 19

ST Notification of lapse

Effective date: 20200914