DK0709957T3 - Akustisk overfladebølgeelement og fremgangsmåde til fremstilling heraf - Google Patents

Akustisk overfladebølgeelement og fremgangsmåde til fremstilling heraf

Info

Publication number
DK0709957T3
DK0709957T3 DK95250259T DK95250259T DK0709957T3 DK 0709957 T3 DK0709957 T3 DK 0709957T3 DK 95250259 T DK95250259 T DK 95250259T DK 95250259 T DK95250259 T DK 95250259T DK 0709957 T3 DK0709957 T3 DK 0709957T3
Authority
DK
Denmark
Prior art keywords
manufacture
surface wave
wave element
acoustic surface
acoustic
Prior art date
Application number
DK95250259T
Other languages
Danish (da)
English (en)
Inventor
Bert Dr Wall
Hamel Andre Du
Original Assignee
Tele Filter Tft Gmbh
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 Tele Filter Tft Gmbh filed Critical Tele Filter Tft Gmbh
Application granted granted Critical
Publication of DK0709957T3 publication Critical patent/DK0709957T3/da

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
    • H03H9/6479—Capacitively coupled SAW resonator filters
    • 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
    • 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
    • H03H9/02637—Details concerning reflective or coupling arrays
    • H03H9/02685—Grating lines having particular arrangements
    • H03H9/02763—Left and right side electrically coupled reflectors
    • 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
    • H03H9/1455—Transducers of particular shape or position constituted of N parallel or series 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
    • H03H9/02—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
    • H03H9/02—Details
    • H03H9/125—Driving means, e.g. electrodes, coils
    • H03H9/145—Driving means, e.g. electrodes, coils for networks using surface acoustic waves
    • H03H9/14597—Matching SAW transducers to external electrical circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
DK95250259T 1994-10-26 1995-10-26 Akustisk overfladebølgeelement og fremgangsmåde til fremstilling heraf DK0709957T3 (da)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4439489A DE4439489C1 (de) 1994-10-26 1994-10-26 Akustisches Oberflächenwellenbauelement und Verfahren zur Herstellung

Publications (1)

Publication Number Publication Date
DK0709957T3 true DK0709957T3 (da) 2003-01-27

Family

ID=6532528

Family Applications (1)

Application Number Title Priority Date Filing Date
DK95250259T DK0709957T3 (da) 1994-10-26 1995-10-26 Akustisk overfladebølgeelement og fremgangsmåde til fremstilling heraf

Country Status (3)

Country Link
EP (1) EP0709957B1 (fr)
DE (1) DE4439489C1 (fr)
DK (1) DK0709957T3 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2296614B (en) * 1994-12-23 1999-09-15 Advanced Saw Prod Sa Saw filter
FR2739232B1 (fr) * 1995-09-26 1997-10-24 Thomson Csf Filtre a ondes acoustiques de surface utilisant le couplage de trois voies acoustiques
US6801100B2 (en) 1996-05-23 2004-10-05 Matsushita Electric Industrial Co., Ltd. Inter-digital transducer, surface acoustic wave filter and communication apparatus using the same
EP0809357B1 (fr) * 1996-05-23 1999-12-15 Matsushita Electric Industrial Co., Ltd. Filtre à ondes acoustiques de surface et filtre à ondes acoustiques de surface à plusieurs étages
DE19638370C2 (de) * 1996-09-19 2001-06-13 Epcos Ag Oberflächenwellenfilter für unsymmetrische/symmetrische und symmetrische/symmetrische Betriebsweise
DE19638399C3 (de) * 1996-09-19 2002-04-18 Epcos Ag Oberflächenwellenfilter
DE19638455A1 (de) * 1996-09-19 1998-04-02 Siemens Matsushita Components Twin-Dualmode-Filter
DE19638627B4 (de) * 1996-09-20 2007-09-27 Epcos Ag Oberflächenwellen(OFW)-Filter
FR2762458B1 (fr) * 1997-04-18 1999-07-09 Thomson Csf Dispositif a ondes acoustiques de surface a couplage par proximite a entrees/sorties differentielles
DE10163517B4 (de) * 2001-12-14 2009-12-17 Leibniz-Institut für Festkörper- und Werkstoffforschung e.V. Resonatorfilterkaskade

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2117992B (en) * 1982-03-24 1985-09-18 Philips Electronic Associated Parallel-series acoustic wave device arrangement
DE3529916A1 (de) * 1985-08-21 1987-02-26 Siemens Ag Dispersiver interdigital-wandler fuer mit akustischen wellen arbeitenden anordnungen
DE4227362C2 (de) * 1992-08-19 1996-01-25 Dresden Ev Inst Festkoerper Akustisches Oberflächenwellenbauelement

Also Published As

Publication number Publication date
DE4439489C1 (de) 1996-01-18
EP0709957A1 (fr) 1996-05-01
EP0709957B1 (fr) 2002-09-18

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