AT320744B - Piezoelectric filter based on the surface wave principle - Google Patents

Piezoelectric filter based on the surface wave principle

Info

Publication number
AT320744B
AT320744B AT348772A AT348772A AT320744B AT 320744 B AT320744 B AT 320744B AT 348772 A AT348772 A AT 348772A AT 348772 A AT348772 A AT 348772A AT 320744 B AT320744 B AT 320744B
Authority
AT
Austria
Prior art keywords
surface wave
filter based
piezoelectric filter
wave principle
principle
Prior art date
Application number
AT348772A
Other languages
German (de)
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
Priority claimed from DE19702021124 external-priority patent/DE2021124C3/en
Application filed by Siemens Ag filed Critical Siemens Ag
Application granted granted Critical
Publication of AT320744B publication Critical patent/AT320744B/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/46—Filters
    • H03H9/64—Filters using surface acoustic waves
    • H03H9/6489—Compensation of undesirable effects
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; 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
    • H03H9/02622—Treatment of substrates, e.g. curved, spherical, cylindrical substrates ensuring closed round-about circuits for the acoustical waves of the surface, including back surface
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/02535—Details of surface acoustic wave devices
    • H03H9/02818—Means for compensation or elimination of undesirable effects
    • H03H9/02842—Means for compensation or elimination of undesirable effects of reflections
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; 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

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
AT348772A 1970-04-29 1971-03-23 Piezoelectric filter based on the surface wave principle AT320744B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702021124 DE2021124C3 (en) 1970-04-29 Piezoelectric filter based on the surface wave principle

Publications (1)

Publication Number Publication Date
AT320744B true AT320744B (en) 1975-02-25

Family

ID=5769849

Family Applications (3)

Application Number Title Priority Date Filing Date
AT348772A AT320744B (en) 1970-04-29 1971-03-23 Piezoelectric filter based on the surface wave principle
AT249771A AT308202B (en) 1970-04-29 1971-03-23 Piezoelectric filter based on the surface wave principle
AT348672A AT321367B (en) 1970-04-29 1971-03-23 Piezoelectric filter based on the surface wave principle

Family Applications After (2)

Application Number Title Priority Date Filing Date
AT249771A AT308202B (en) 1970-04-29 1971-03-23 Piezoelectric filter based on the surface wave principle
AT348672A AT321367B (en) 1970-04-29 1971-03-23 Piezoelectric filter based on the surface wave principle

Country Status (4)

Country Link
AT (3) AT320744B (en)
FR (1) FR2090687A5 (en)
GB (1) GB1319946A (en)
NL (1) NL7105921A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2454223B1 (en) * 1979-04-10 1986-11-28 Telediffusion Fse SURFACE ELASTIC WAVE DEVICE FOR INTERFERENCE OR INTERFERENCE CIRCUIT FOR TELEVISION BROADCASTS
US4609891A (en) * 1985-10-16 1986-09-02 Sperry Corporation Staggered SAW resonator for differential detection
DE102015106191A1 (en) * 2015-04-22 2016-10-27 Epcos Ag Electro-acoustic component with improved acoustics

Also Published As

Publication number Publication date
GB1319946A (en) 1973-06-13
AT321367B (en) 1975-03-25
FR2090687A5 (en) 1972-01-14
NL7105921A (en) 1971-11-02
DE2021124A1 (en) 1971-11-11
AT308202B (en) 1973-06-25
DE2021124B2 (en) 1975-07-31

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Legal Events

Date Code Title Description
ELJ Ceased due to non-payment of the annual fee