FR2146823A5 - - Google Patents
Info
- Publication number
- FR2146823A5 FR2146823A5 FR7225991A FR7225991A FR2146823A5 FR 2146823 A5 FR2146823 A5 FR 2146823A5 FR 7225991 A FR7225991 A FR 7225991A FR 7225991 A FR7225991 A FR 7225991A FR 2146823 A5 FR2146823 A5 FR 2146823A5
- Authority
- FR
- France
- 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.)
- Expired
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
- H03H9/125—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)
- Transducers For Ultrasonic Waves (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3436871A GB1357193A (en) | 1971-07-22 | 1971-07-22 | Acoustic surface wave devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR2146823A5 true FR2146823A5 (fr) | 1973-03-02 |
Family
ID=10364774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7225991A Expired FR2146823A5 (fr) | 1971-07-22 | 1972-07-19 |
Country Status (7)
| Country | Link |
|---|---|
| AU (1) | AU4461772A (fr) |
| DE (1) | DE2233137A1 (fr) |
| ES (1) | ES405007A1 (fr) |
| FR (1) | FR2146823A5 (fr) |
| GB (1) | GB1357193A (fr) |
| IT (1) | IT961484B (fr) |
| NL (1) | NL7209887A (fr) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2319245A1 (fr) * | 1975-07-24 | 1977-02-18 | Thomson Csf | Transducteur perfectionne pour filtre a ondes de surface a fonction de transfert asymetrique et filtre comportant un tel transducteur |
| EP0014117A1 (fr) * | 1979-01-26 | 1980-08-06 | Thomson-Csf | Transducteur d'ondes élastiques de surface et filtre comprenant un tel transducteur |
| FR2452204A1 (fr) * | 1979-03-21 | 1980-10-17 | Inst Radiotekh Elektron | Filtre a onde acoustique de surface |
| EP0489195A1 (fr) * | 1990-12-05 | 1992-06-10 | SIEMENS MATSUSHITA COMPONENTS GmbH & CO. KG | Filtre à fréquence intermédiaire pour l'utilisation quasi parallèle/parallèle de son |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2328323A1 (fr) * | 1975-10-17 | 1977-05-13 | Thomson Csf | Transducteur pour filtre a ondes de surface a diffraction reduite, et filtre comportant un tel transducteur |
| GB1554366A (en) * | 1977-02-04 | 1979-10-17 | Philips Electronic Associated | Acoustic surface wave devices |
| US4321567A (en) * | 1980-03-24 | 1982-03-23 | Raytheon Company | Combining series sections weighting with withdrawal weighting in SAW transducers |
| GB2120891B (en) * | 1982-05-25 | 1986-07-02 | Plessey Co Plc | Interdigital transducer |
| KR900008524B1 (ko) * | 1987-08-19 | 1990-11-24 | 삼성전자 주식회사 | 위성수신기의 지대지간섭 제거를 위한 탄성표면파 필터 |
-
1971
- 1971-07-22 GB GB3436871A patent/GB1357193A/en not_active Expired
-
1972
- 1972-07-06 DE DE19722233137 patent/DE2233137A1/de active Pending
- 1972-07-17 AU AU44617/72A patent/AU4461772A/en not_active Expired
- 1972-07-18 NL NL7209887A patent/NL7209887A/xx unknown
- 1972-07-19 IT IT5163672A patent/IT961484B/it active
- 1972-07-19 FR FR7225991A patent/FR2146823A5/fr not_active Expired
- 1972-07-20 ES ES405007A patent/ES405007A1/es not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2319245A1 (fr) * | 1975-07-24 | 1977-02-18 | Thomson Csf | Transducteur perfectionne pour filtre a ondes de surface a fonction de transfert asymetrique et filtre comportant un tel transducteur |
| EP0014117A1 (fr) * | 1979-01-26 | 1980-08-06 | Thomson-Csf | Transducteur d'ondes élastiques de surface et filtre comprenant un tel transducteur |
| FR2447644A1 (fr) * | 1979-01-26 | 1980-08-22 | Thomson Csf | Transducteur d'ondes elastiques de surface et filtre comprenant un tel transducteur |
| FR2452204A1 (fr) * | 1979-03-21 | 1980-10-17 | Inst Radiotekh Elektron | Filtre a onde acoustique de surface |
| EP0489195A1 (fr) * | 1990-12-05 | 1992-06-10 | SIEMENS MATSUSHITA COMPONENTS GmbH & CO. KG | Filtre à fréquence intermédiaire pour l'utilisation quasi parallèle/parallèle de son |
Also Published As
| Publication number | Publication date |
|---|---|
| AU4461772A (en) | 1974-01-24 |
| DE2233137A1 (de) | 1973-02-08 |
| IT961484B (it) | 1973-12-10 |
| ES405007A1 (es) | 1975-07-01 |
| GB1357193A (en) | 1974-06-19 |
| NL7209887A (fr) | 1973-01-24 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |