IT993581B - Filtro o linea di ritardo funzio nante secondo il principio a onde superficiali - Google Patents

Filtro o linea di ritardo funzio nante secondo il principio a onde superficiali

Info

Publication number
IT993581B
IT993581B IT2655973A IT2655973A IT993581B IT 993581 B IT993581 B IT 993581B IT 2655973 A IT2655973 A IT 2655973A IT 2655973 A IT2655973 A IT 2655973A IT 993581 B IT993581 B IT 993581B
Authority
IT
Italy
Prior art keywords
filter
delay line
surface waves
functioning according
line functioning
Prior art date
Application number
IT2655973A
Other languages
English (en)
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
Application granted granted Critical
Publication of IT993581B publication Critical patent/IT993581B/it

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
    • H03H9/02992—Details of bus bars, contact pads or other electrical connections for finger 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
    • 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
    • H03H9/02913—Measures for shielding against electromagnetic fields

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
IT2655973A 1972-07-18 1973-07-13 Filtro o linea di ritardo funzio nante secondo il principio a onde superficiali IT993581B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722235233 DE2235233C3 (de) 1972-07-18 1972-07-18 Filter oder Verzögerungsleitung nach dem OberflächenweUenprinzip

Publications (1)

Publication Number Publication Date
IT993581B true IT993581B (it) 1975-09-30

Family

ID=5850962

Family Applications (1)

Application Number Title Priority Date Filing Date
IT2655973A IT993581B (it) 1972-07-18 1973-07-13 Filtro o linea di ritardo funzio nante secondo il principio a onde superficiali

Country Status (7)

Country Link
AT (1) AT339957B (it)
BE (1) BE802498A (it)
DE (1) DE2235233C3 (it)
FR (1) FR2193289B1 (it)
GB (1) GB1441602A (it)
IT (1) IT993581B (it)
NL (1) NL7307898A (it)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4296391A (en) 1977-10-28 1981-10-20 Hitachi, Ltd. Surface-acoustic-wave filter for channel selection system of television receiver
DE3517254A1 (de) * 1985-05-13 1986-11-13 Siemens AG, 1000 Berlin und 8000 München Mit akustischen wellen arbeitendes elektrisches filter
US4870312A (en) * 1987-02-19 1989-09-26 Hazeltine Corporation Surface wave device having anti-reflective shield
JP3384403B2 (ja) * 2001-03-01 2003-03-10 株式会社村田製作所 弾性表面波装置、通信装置
DE102010008774B4 (de) 2010-02-22 2015-07-23 Epcos Ag Mikroakustisches Filter mit kompensiertem Übersprechen und Verfahren zur Kompensation

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3573673A (en) * 1969-01-08 1971-04-06 Zenith Radio Corp Acoustic surface wave filters

Also Published As

Publication number Publication date
DE2235233A1 (de) 1974-01-31
DE2235233C3 (de) 1978-03-02
FR2193289A1 (it) 1974-02-15
DE2235233B2 (de) 1977-07-14
ATA415573A (de) 1977-03-15
FR2193289B1 (it) 1978-02-17
GB1441602A (en) 1976-07-07
BE802498A (fr) 1973-11-16
AT339957B (de) 1977-11-25
NL7307898A (it) 1974-01-22

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