FR2340647B2 - - Google Patents
Info
- Publication number
- FR2340647B2 FR2340647B2 FR7703244A FR7703244A FR2340647B2 FR 2340647 B2 FR2340647 B2 FR 2340647B2 FR 7703244 A FR7703244 A FR 7703244A FR 7703244 A FR7703244 A FR 7703244A FR 2340647 B2 FR2340647 B2 FR 2340647B2
- 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
- H03H9/46—Filters
- H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
- H03H9/58—Multiple crystal filters
- H03H9/60—Electric coupling means therefor
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N30/00—Piezoelectric or electrostrictive devices
Landscapes
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NLAANVRAGE7601124,A NL178928C (nl) | 1976-02-04 | 1976-02-04 | Verbetering van een piezo-elektrisch filter met een zeer smalle doorlaatband. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2340647A2 FR2340647A2 (fr) | 1977-09-02 |
| FR2340647B2 true FR2340647B2 (fr) | 1980-08-08 |
Family
ID=19825565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7703244A Granted FR2340647A2 (fr) | 1976-02-04 | 1977-02-04 | Amelioration d'une chaine de filtrage |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US4127833A (fr) |
| JP (1) | JPS5295140A (fr) |
| DE (1) | DE2704004C2 (fr) |
| FR (1) | FR2340647A2 (fr) |
| GB (1) | GB1541397A (fr) |
| NL (1) | NL178928C (fr) |
| SE (1) | SE418441B (fr) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5578974A (en) * | 1995-04-28 | 1996-11-26 | Motorola, Inc. | Piezoelectric filter with a curved electrode |
| CN101785184B (zh) * | 2007-08-23 | 2013-03-06 | 太阳诱电株式会社 | 弹性波滤波器、使用该弹性波滤波器的双工器及使用该双工器的通信机 |
| AT509017B1 (de) * | 2009-11-02 | 2012-05-15 | Ctp-Dumag Gmbh | Brennerdüse |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2515979A (en) * | 1946-11-25 | 1950-07-18 | Bianchi Attilio | Wallpaper cutter |
| US3638146A (en) * | 1968-09-25 | 1972-01-25 | Toko Inc | Piezoelectric ceramic filter |
| US4017753A (en) * | 1975-02-05 | 1977-04-12 | Kabushiki Kaisha Meidensha | Shaped quartz crystal resonator |
| US3983518A (en) * | 1975-04-24 | 1976-09-28 | De Statt Der Nederlanden, Te Dezen Vertegenwoordigd Door De Directeur-Generaal Der Posterijen, Telegrafie En Telefonie | Filter chain |
-
1976
- 1976-02-04 NL NLAANVRAGE7601124,A patent/NL178928C/xx not_active IP Right Cessation
-
1977
- 1977-01-31 US US05/764,400 patent/US4127833A/en not_active Expired - Lifetime
- 1977-02-01 SE SE7701068A patent/SE418441B/xx unknown
- 1977-02-01 DE DE2704004A patent/DE2704004C2/de not_active Expired
- 1977-02-02 GB GB4288/77A patent/GB1541397A/en not_active Expired
- 1977-02-04 JP JP1087077A patent/JPS5295140A/ja active Granted
- 1977-02-04 FR FR7703244A patent/FR2340647A2/fr active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| US4127833A (en) | 1978-11-28 |
| DE2704004A1 (de) | 1977-08-11 |
| SE7701068L (sv) | 1977-08-05 |
| FR2340647A2 (fr) | 1977-09-02 |
| DE2704004C2 (de) | 1985-10-24 |
| SE418441B (sv) | 1981-05-25 |
| NL178928B (nl) | 1986-01-02 |
| JPS5295140A (en) | 1977-08-10 |
| GB1541397A (en) | 1979-02-28 |
| NL7601124A (nl) | 1977-08-08 |
| NL178928C (nl) | 1986-06-02 |
| JPS6219090B2 (fr) | 1987-04-27 |