FR2373917B1 - - Google Patents
Info
- Publication number
- FR2373917B1 FR2373917B1 FR7736906A FR7736906A FR2373917B1 FR 2373917 B1 FR2373917 B1 FR 2373917B1 FR 7736906 A FR7736906 A FR 7736906A FR 7736906 A FR7736906 A FR 7736906A FR 2373917 B1 FR2373917 B1 FR 2373917B1
- 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
-
- 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
- H03H9/125—Driving means, e.g. electrodes, coils
- H03H9/145—Driving means, e.g. electrodes, coils for networks using surface acoustic waves
- H03H9/14517—Means for weighting
- H03H9/1452—Means for weighting by finger overlap length, apodisation
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
- Processing Of Color Television Signals (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP51146504A JPS5931890B2 (ja) | 1976-12-08 | 1976-12-08 | 弾性表面波フイルタ |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2373917A1 FR2373917A1 (fr) | 1978-07-07 |
| FR2373917B1 true FR2373917B1 (online.php) | 1982-03-12 |
Family
ID=15409114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7736906A Granted FR2373917A1 (fr) | 1976-12-08 | 1977-12-07 | Filtre d'ondes de surface elastique |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US4223285A (online.php) |
| JP (1) | JPS5931890B2 (online.php) |
| DE (1) | DE2754494C2 (online.php) |
| FR (1) | FR2373917A1 (online.php) |
| GB (1) | GB1593300A (online.php) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55134587A (en) * | 1979-04-05 | 1980-10-20 | Sanyo Electric Co Ltd | Color television receiver |
| JPS5648708A (en) * | 1979-09-28 | 1981-05-02 | Hitachi Ltd | Surface elastic wave filter |
| US4321567A (en) * | 1980-03-24 | 1982-03-23 | Raytheon Company | Combining series sections weighting with withdrawal weighting in SAW transducers |
| JPS5992613A (ja) * | 1982-11-19 | 1984-05-28 | Hitachi Ltd | 弾性表面波装置 |
| US4531149A (en) * | 1983-06-24 | 1985-07-23 | Rca Corporation | Digital variable group delay equalizer for a digital television receiver |
| GB2157522B (en) * | 1984-04-09 | 1987-08-19 | Philips Electronic Associated | Electrical filter comprising an acoustic surface wave device, and method of manufacturing such a filter |
| US4825467A (en) * | 1986-11-25 | 1989-04-25 | International Telesystems, Inc. | Restricted access television transmission system |
| US5654774A (en) * | 1995-06-06 | 1997-08-05 | Thomson Consumer Electronics, Inc. | Tuner for digital satellite receiver |
| TW353245B (en) * | 1995-06-06 | 1999-02-21 | Thomson Consumer Electronics | Saw filter for a tuner of a digital satellite receiver |
| US9568190B2 (en) | 2014-06-13 | 2017-02-14 | Integrated Energy LLC | Systems, apparatus, and methods for treating waste materials |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2036374A5 (online.php) * | 1969-03-12 | 1970-12-24 | Thomson Csf | |
| US3675163A (en) * | 1970-08-26 | 1972-07-04 | Clinton S Hartmann | Cascaded f. m. correlators for long pulses |
| GB1499330A (en) * | 1974-09-26 | 1978-02-01 | Plessey Co Ltd | Acoustic surface wave filters |
| DE2524649C3 (de) * | 1975-06-03 | 1980-11-06 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Fernseh-ZF-Filter nach dem Oberflächenwellenprinzip |
| US4047130A (en) * | 1976-08-27 | 1977-09-06 | Rockwell International Corporation | Surface acoustic wave filter |
-
1976
- 1976-12-08 JP JP51146504A patent/JPS5931890B2/ja not_active Expired
-
1977
- 1977-12-06 US US05/857,908 patent/US4223285A/en not_active Expired - Lifetime
- 1977-12-07 GB GB51012/77A patent/GB1593300A/en not_active Expired
- 1977-12-07 FR FR7736906A patent/FR2373917A1/fr active Granted
- 1977-12-07 DE DE2754494A patent/DE2754494C2/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5931890B2 (ja) | 1984-08-04 |
| JPS5371548A (en) | 1978-06-26 |
| US4223285A (en) | 1980-09-16 |
| DE2754494C2 (de) | 1984-01-05 |
| DE2754494A1 (de) | 1978-06-22 |
| GB1593300A (en) | 1981-07-15 |
| FR2373917A1 (fr) | 1978-07-07 |