FR2313811A1 - Filtre moyenne frequence de television fonctionnant sur le principe des ondes de surface - Google Patents
Filtre moyenne frequence de television fonctionnant sur le principe des ondes de surfaceInfo
- Publication number
- FR2313811A1 FR2313811A1 FR7616368A FR7616368A FR2313811A1 FR 2313811 A1 FR2313811 A1 FR 2313811A1 FR 7616368 A FR7616368 A FR 7616368A FR 7616368 A FR7616368 A FR 7616368A FR 2313811 A1 FR2313811 A1 FR 2313811A1
- Authority
- FR
- France
- Prior art keywords
- principle
- medium frequency
- surface waves
- filter operating
- frequency television
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
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)
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 (2)
Publication Number | Publication Date |
---|---|
FR2313811A1 true FR2313811A1 (fr) | 1976-12-31 |
FR2313811B3 FR2313811B3 (fr) | 1979-02-16 |
Family
ID=5948153
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7616368A Granted FR2313811A1 (fr) | 1975-06-03 | 1976-05-31 | Filtre moyenne frequence de television fonctionnant sur le principe des ondes de surface |
Country Status (7)
Country | Link |
---|---|
US (1) | US4066985A (fr) |
JP (1) | JPS51148342A (fr) |
BE (1) | BE842554A (fr) |
BR (1) | BR7603394A (fr) |
DE (1) | DE2524649C3 (fr) |
FR (1) | FR2313811A1 (fr) |
IT (1) | IT1123055B (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0023109A1 (fr) * | 1979-07-20 | 1981-01-28 | Fujitsu Limited | Dispositif de filtre à ondes acoustiques de surface |
EP0201766A2 (fr) * | 1985-05-13 | 1986-11-20 | Siemens Aktiengesellschaft | Filtre électrique fonctionnant avec des ondes acoustiques |
EP0665645A1 (fr) * | 1994-01-31 | 1995-08-02 | SIEMENS MATSUSHITA COMPONENTS GmbH & CO. KG | Filtre résonateur, à couplage transversal de modes, à ondes acoustiques de surface |
Families Citing this family (13)
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 |
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 |
CA1273701A (fr) * | 1986-03-12 | 1990-09-04 | Mark S. Suthers | Dispositif a ondes acoustiques de surface a transducteur interdigite apodise |
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 |
TW256966B (fr) * | 1994-03-04 | 1995-09-11 | Murata Manufacturing Co | |
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 |
WO2000076065A1 (fr) | 1999-06-03 | 2000-12-14 | Tele Filter Zweigniederlassung Der Dover Germany Gmbh | Filtre a ondes acoustiques de surface |
DE102010008774B4 (de) * | 2010-02-22 | 2015-07-23 | Epcos Ag | Mikroakustisches Filter mit kompensiertem Übersprechen und Verfahren zur Kompensation |
Family Cites Families (2)
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 |
-
1975
- 1975-06-03 DE DE2524649A patent/DE2524649C3/de not_active Expired
-
1976
- 1976-05-26 IT IT23652/76A patent/IT1123055B/it active
- 1976-05-28 BR BR7603394A patent/BR7603394A/pt unknown
- 1976-05-31 FR FR7616368A patent/FR2313811A1/fr active Granted
- 1976-06-02 US US05/692,223 patent/US4066985A/en not_active Expired - Lifetime
- 1976-06-03 BE BE167605A patent/BE842554A/fr unknown
- 1976-06-03 JP JP51065122A patent/JPS51148342A/ja active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0023109A1 (fr) * | 1979-07-20 | 1981-01-28 | Fujitsu Limited | Dispositif de filtre à ondes acoustiques de surface |
EP0201766A2 (fr) * | 1985-05-13 | 1986-11-20 | Siemens Aktiengesellschaft | Filtre électrique fonctionnant avec des ondes acoustiques |
EP0201766A3 (en) * | 1985-05-13 | 1988-09-21 | Siemens Aktiengesellschaft Berlin Und Munchen | Electrical filter operating with acoustical waves |
EP0665645A1 (fr) * | 1994-01-31 | 1995-08-02 | SIEMENS MATSUSHITA COMPONENTS GmbH & CO. KG | Filtre résonateur, à couplage transversal de modes, à ondes acoustiques de surface |
Also Published As
Publication number | Publication date |
---|---|
FR2313811B3 (fr) | 1979-02-16 |
BR7603394A (pt) | 1977-02-15 |
IT1123055B (it) | 1986-04-30 |
BE842554A (fr) | 1976-10-01 |
DE2524649A1 (de) | 1976-12-09 |
US4066985A (en) | 1978-01-03 |
DE2524649B2 (de) | 1980-01-17 |
JPS51148342A (en) | 1976-12-20 |
DE2524649C3 (de) | 1980-11-06 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |