FR2296943B1 - - Google Patents
Info
- Publication number
- FR2296943B1 FR2296943B1 FR7443426A FR7443426A FR2296943B1 FR 2296943 B1 FR2296943 B1 FR 2296943B1 FR 7443426 A FR7443426 A FR 7443426A FR 7443426 A FR7443426 A FR 7443426A FR 2296943 B1 FR2296943 B1 FR 2296943B1
- 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 devices; Electromechanical resonators
- H03H9/46—Filters
- H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
- H03H9/56—Monolithic crystal filters
-
- 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
- H03H9/13—Driving means, e.g. electrodes, coils for networks consisting of piezoelectric or electrostrictive materials
- H03H9/132—Driving means, e.g. electrodes, coils for networks consisting of piezoelectric or electrostrictive materials characterized by a particular shape
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7443426A FR2296943A1 (fr) | 1974-12-31 | 1974-12-31 | Cristal piezoelectrique pour filtre de frequence |
| DE19752559062 DE2559062A1 (de) | 1974-12-31 | 1975-12-30 | Piezoelektrischer kristall fuer ein frequenzfilter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7443426A FR2296943A1 (fr) | 1974-12-31 | 1974-12-31 | Cristal piezoelectrique pour filtre de frequence |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2296943A1 FR2296943A1 (fr) | 1976-07-30 |
| FR2296943B1 true FR2296943B1 (US08124630-20120228-C00152.png) | 1977-07-08 |
Family
ID=9146823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7443426A Granted FR2296943A1 (fr) | 1974-12-31 | 1974-12-31 | Cristal piezoelectrique pour filtre de frequence |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE2559062A1 (US08124630-20120228-C00152.png) |
| FR (1) | FR2296943A1 (US08124630-20120228-C00152.png) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1357135A (fr) * | 1963-02-23 | 1964-04-03 | Observatoire Paris | Perfectionnements aux résonateurs piézoélectriques |
| US3638146A (en) * | 1968-09-25 | 1972-01-25 | Toko Inc | Piezoelectric ceramic filter |
-
1974
- 1974-12-31 FR FR7443426A patent/FR2296943A1/fr active Granted
-
1975
- 1975-12-30 DE DE19752559062 patent/DE2559062A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| FR2296943A1 (fr) | 1976-07-30 |
| DE2559062A1 (de) | 1976-07-08 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |