BE842554A - Filtre a frequence intermediaire pour television - Google Patents

Filtre a frequence intermediaire pour television

Info

Publication number
BE842554A
BE842554A BE167605A BE167605A BE842554A BE 842554 A BE842554 A BE 842554A BE 167605 A BE167605 A BE 167605A BE 167605 A BE167605 A BE 167605A BE 842554 A BE842554 A BE 842554A
Authority
BE
Belgium
Prior art keywords
television
intermediate frequency
frequency filter
filter
frequency
Prior art date
Application number
BE167605A
Other languages
English (en)
French (fr)
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 filed Critical
Publication of BE842554A publication Critical patent/BE842554A/xx

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
    • H03H9/46—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 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
    • H03H9/02881—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 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
    • H03H9/1455—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)
BE167605A 1975-06-03 1976-06-03 Filtre a frequence intermediaire pour television BE842554A (fr)

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
BE842554A true BE842554A (fr) 1976-10-01

Family

ID=5948153

Family Applications (1)

Application Number Title Priority Date Filing Date
BE167605A BE842554A (fr) 1975-06-03 1976-06-03 Filtre a frequence intermediaire pour television

Country Status (7)

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

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 (xx) * 1994-03-04 1995-09-11 Murata Manufacturing Co
US6707229B1 (en) 1999-06-03 2004-03-16 Tele Filter Zweigniederlassung Der Dover Germany Gmbh Surface acoustic wave filter
DE19925800C1 (de) * 1999-06-03 2000-12-21 Dresden Ev Inst Festkoerper Wandler für akustische Oberflächenwellen
DE19943072B4 (de) * 1999-06-03 2004-05-13 Leibniz-Institut für Festkörper- und Werkstoffforschung e.V. Akustisches Oberflächenwellenfilter
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
US4066985A (en) 1978-01-03
JPS51148342A (en) 1976-12-20
DE2524649B2 (de) 1980-01-17
BR7603394A (pt) 1977-02-15
DE2524649A1 (de) 1976-12-09
DE2524649C3 (de) 1980-11-06
FR2313811B3 (xx) 1979-02-16
IT1123055B (it) 1986-04-30
FR2313811A1 (fr) 1976-12-31

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