FR2296943A1 - Cristal piezoelectrique pour filtre de frequence - Google Patents
Cristal piezoelectrique pour filtre de frequenceInfo
- Publication number
- FR2296943A1 FR2296943A1 FR7443426A FR7443426A FR2296943A1 FR 2296943 A1 FR2296943 A1 FR 2296943A1 FR 7443426 A FR7443426 A FR 7443426A FR 7443426 A FR7443426 A FR 7443426A FR 2296943 A1 FR2296943 A1 FR 2296943A1
- Authority
- FR
- France
- Prior art keywords
- piezoelectric crystal
- block
- end faces
- plane parallel
- frequency filter
- 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
- 239000013078 crystal Substances 0.000 title abstract 2
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 piezo-electric 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
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 true FR2296943A1 (fr) | 1976-07-30 |
FR2296943B1 FR2296943B1 (fr) | 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 (fr) |
FR (1) | FR2296943A1 (fr) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1028134A (en) * | 1963-02-23 | 1966-05-04 | Vladimir Ianouchevsky | Improvements relating to piezoelectric crystal resonators |
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
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1028134A (en) * | 1963-02-23 | 1966-05-04 | Vladimir Ianouchevsky | Improvements relating to piezoelectric crystal resonators |
US3638146A (en) * | 1968-09-25 | 1972-01-25 | Toko Inc | Piezoelectric ceramic filter |
Also Published As
Publication number | Publication date |
---|---|
DE2559062A1 (de) | 1976-07-08 |
FR2296943B1 (fr) | 1977-07-08 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |