DE8514190U1 - Mit akustischen Wellen arbeitendes elektrisches Filter - Google Patents

Mit akustischen Wellen arbeitendes elektrisches Filter

Info

Publication number
DE8514190U1
DE8514190U1 DE19858514190 DE8514190U DE8514190U1 DE 8514190 U1 DE8514190 U1 DE 8514190U1 DE 19858514190 DE19858514190 DE 19858514190 DE 8514190 U DE8514190 U DE 8514190U DE 8514190 U1 DE8514190 U1 DE 8514190U1
Authority
DE
Germany
Prior art keywords
strip
substructure
structures
filter
shaped
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
Application number
DE19858514190
Other languages
German (de)
English (en)
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to DE19858514190 priority Critical patent/DE8514190U1/de
Publication of DE8514190U1 publication Critical patent/DE8514190U1/de
Expired 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
    • H03H9/02—Details
    • H03H9/02535—Details of surface acoustic wave devices
    • H03H9/02614—Treatment of substrates, e.g. curved, spherical, cylindrical substrates ensuring closed round-about circuits for the acoustical waves
    • H03H9/02629—Treatment of substrates, e.g. curved, spherical, cylindrical substrates ensuring closed round-about circuits for the acoustical waves of the edges
    • 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
    • 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
    • H03H9/14576—Transducers whereby only the last fingers have different characteristics with respect to the other fingers, e.g. different shape, thickness or material, split finger
    • H03H9/14585—Transducers whereby only the last fingers have different characteristics with respect to the other fingers, e.g. different shape, thickness or material, split finger the last fingers being split
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
DE19858514190 1985-05-13 1985-05-13 Mit akustischen Wellen arbeitendes elektrisches Filter Expired DE8514190U1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19858514190 DE8514190U1 (de) 1985-05-13 1985-05-13 Mit akustischen Wellen arbeitendes elektrisches Filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19858514190 DE8514190U1 (de) 1985-05-13 1985-05-13 Mit akustischen Wellen arbeitendes elektrisches Filter

Publications (1)

Publication Number Publication Date
DE8514190U1 true DE8514190U1 (de) 1988-09-15

Family

ID=6781081

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19858514190 Expired DE8514190U1 (de) 1985-05-13 1985-05-13 Mit akustischen Wellen arbeitendes elektrisches Filter

Country Status (1)

Country Link
DE (1) DE8514190U1 (fr)

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