IT1123055B - Filtro di frequenza intermedia per televisione secondo il principio delle onde superficiali - Google Patents

Filtro di frequenza intermedia per televisione secondo il principio delle onde superficiali

Info

Publication number
IT1123055B
IT1123055B IT23652/76A IT2365276A IT1123055B IT 1123055 B IT1123055 B IT 1123055B IT 23652/76 A IT23652/76 A IT 23652/76A IT 2365276 A IT2365276 A IT 2365276A IT 1123055 B IT1123055 B IT 1123055B
Authority
IT
Italy
Prior art keywords
principle
intermediate frequency
frequency filter
surface waves
television according
Prior art date
Application number
IT23652/76A
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 IT1123055B publication Critical patent/IT1123055B/it

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
    • H03H9/6423—Means for obtaining a particular transfer characteristic
    • H03H9/6426—Combinations of the characteristics of different 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
    • H03H9/02874—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
    • H03H9/02881—Means for compensation or elimination of undesirable effects of diffraction of wave beam
    • 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)
IT23652/76A 1975-06-03 1976-05-26 Filtro di frequenza intermedia per televisione secondo il principio delle onde superficiali IT1123055B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2524649A DE2524649C3 (de) 1975-06-03 1975-06-03 Fernseh-ZF-Filter nach dem Oberflächenwellenprinzip

Publications (1)

Publication Number Publication Date
IT1123055B true IT1123055B (it) 1986-04-30

Family

ID=5948153

Family Applications (1)

Application Number Title Priority Date Filing Date
IT23652/76A IT1123055B (it) 1975-06-03 1976-05-26 Filtro di frequenza intermedia per televisione secondo il principio delle onde superficiali

Country Status (7)

Country Link
US (1) US4066985A (it)
JP (1) JPS51148342A (it)
BE (1) BE842554A (it)
BR (1) BR7603394A (it)
DE (1) DE2524649C3 (it)
FR (1) FR2313811A1 (it)
IT (1) IT1123055B (it)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5931890B2 (ja) * 1976-12-08 1984-08-04 株式会社日立製作所 弾性表面波フイルタ
SU726648A1 (ru) * 1977-07-22 1980-04-05 Ордена Трудового Красного Знамени Институт Радиотехники И Электроники Ан Ссср Устройство на поверхностных акустических волнах
JPS5616314A (en) * 1979-07-20 1981-02-17 Fujitsu Ltd Surface elastic wave filter
SU805918A1 (ru) * 1979-09-28 1982-03-30 Ордена Трудового Красного Знамени Институт Радиотехники И Электроники Ан Ссср Преобразователь поверхностных акустических волн
JPS5843609A (ja) * 1981-09-09 1983-03-14 Toshiba Corp 弾性表面波装置
US4673901A (en) * 1984-10-26 1987-06-16 Siemens Aktiengesellschaft Electrical filter operating with acoustic waves
DE3517254A1 (de) * 1985-05-13 1986-11-13 Siemens AG, 1000 Berlin und 8000 München Mit akustischen wellen arbeitendes elektrisches filter
CA1273701A (en) * 1986-03-12 1990-09-04 Mark S. Suthers Saw device with apodized idt
JPS6484909A (en) * 1987-09-25 1989-03-30 Nec Corp Surface acoustic wave device
US5023605A (en) * 1988-11-25 1991-06-11 Gte Laboratories, Inc. Patterned transducer apparatus for correcting spurious signals in said devices
JPH07321599A (ja) * 1994-01-31 1995-12-08 Siemens Matsushita Components Gmbh & Co Kg 横モード結合されたｏｆｗ共振器フィルタ
TW256966B (it) * 1994-03-04 1995-09-11 Murata Manufacturing Co
WO2000076065A1 (de) 1999-06-03 2000-12-14 Tele Filter Zweigniederlassung Der Dover Germany Gmbh Akustisches oberflächenwellenfilter
DE19943072B4 (de) * 1999-06-03 2004-05-13 Leibniz-Institut für Festkörper- und Werkstoffforschung e.V. Akustisches Oberflächenwellenfilter
DE19925800C1 (de) * 1999-06-03 2000-12-21 Dresden Ev Inst Festkoerper Wandler für akustische Oberflächenwellen
DE102010008774B4 (de) * 2010-02-22 2015-07-23 Epcos Ag Mikroakustisches Filter mit kompensiertem Übersprechen und Verfahren zur Kompensation

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3582540A (en) * 1969-04-17 1971-06-01 Zenith Radio Corp Signal translating apparatus using surface wave acoustic device
US3858118A (en) * 1973-07-17 1974-12-31 Westinghouse Electric Corp Acoustic surface wave television tuner

Also Published As

Publication number Publication date
DE2524649B2 (de) 1980-01-17
FR2313811A1 (fr) 1976-12-31
JPS51148342A (en) 1976-12-20
BE842554A (fr) 1976-10-01
FR2313811B3 (it) 1979-02-16
US4066985A (en) 1978-01-03
BR7603394A (pt) 1977-02-15
DE2524649C3 (de) 1980-11-06
DE2524649A1 (de) 1976-12-09

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