BE802498A - Filtre ou ligne a retard travaillant suivant le principe des ondes de surface - Google Patents

Filtre ou ligne a retard travaillant suivant le principe des ondes de surface

Info

Publication number
BE802498A
BE802498A BE133608A BE133608A BE802498A BE 802498 A BE802498 A BE 802498A BE 133608 A BE133608 A BE 133608A BE 133608 A BE133608 A BE 133608A BE 802498 A BE802498 A BE 802498A
Authority
BE
Belgium
Prior art keywords
principle
filter
delay line
surface waves
working according
Prior art date
Application number
BE133608A
Other languages
English (en)
French (fr)
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
Publication of BE802498A publication Critical patent/BE802498A/xx

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
    • H03H9/02—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 elements; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/02535—Details of surface acoustic wave devices
    • H03H9/02818—Means for compensation or elimination of undesirable effects
    • H03H9/02874—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 elements; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/02535—Details of surface acoustic wave devices
    • H03H9/02818—Means for compensation or elimination of undesirable effects
    • H03H9/02913—Measures for shielding against electromagnetic fields

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
BE133608A 1972-07-18 1973-07-18 Filtre ou ligne a retard travaillant suivant le principe des ondes de surface BE802498A (fr)

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
BE802498A true BE802498A (fr) 1973-11-16

Family

ID=5850962

Family Applications (1)

Application Number Title Priority Date Filing Date
BE133608A BE802498A (fr) 1972-07-18 1973-07-18 Filtre ou ligne a retard travaillant suivant le principe des ondes de surface

Country Status (7)

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

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
DE2235233B2 (de) 1977-07-14
ATA415573A (de) 1977-03-15
AT339957B (de) 1977-11-25
GB1441602A (en) 1976-07-07
NL7307898A (cs) 1974-01-22
FR2193289B1 (cs) 1978-02-17
FR2193289A1 (cs) 1974-02-15
DE2235233A1 (de) 1974-01-31
DE2235233C3 (de) 1978-03-02
IT993581B (it) 1975-09-30

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