FR867832A - Piezoelectric devices - Google Patents
Piezoelectric devicesInfo
- Publication number
- FR867832A FR867832A FR867832DA FR867832A FR 867832 A FR867832 A FR 867832A FR 867832D A FR867832D A FR 867832DA FR 867832 A FR867832 A FR 867832A
- Authority
- FR
- France
- Prior art keywords
- piezoelectric devices
- piezoelectric
- devices
- 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.)
- 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
- H03H9/02—Details
- H03H9/02007—Details of bulk acoustic wave devices
- H03H9/02015—Characteristics of piezoelectric layers, e.g. cutting angles
- H03H9/02023—Characteristics of piezoelectric layers, e.g. cutting angles consisting of quartz
-
- 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
- H03H9/02007—Details of bulk acoustic wave devices
- H03H9/02157—Dimensional parameters, e.g. ratio between two dimension parameters, length, width or thickness
-
- 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
- H03H9/05—Holders; Supports
- H03H9/0504—Holders; Supports for bulk acoustic wave devices
-
- 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
- H03H9/05—Holders; Supports
- H03H9/10—Mounting in enclosures
- H03H9/1007—Mounting in enclosures for bulk acoustic wave [BAW] devices
- H03H9/1014—Mounting in enclosures for bulk acoustic wave [BAW] devices the enclosure being defined by a frame built on a substrate and a cap, the frame having no mechanical contact with the BAW device
-
- 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
- H03H9/566—Electric coupling means therefor
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)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US326764A US2268413A (en) | 1940-03-29 | 1940-03-29 | Piezoelectric crystal apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
FR867832A true FR867832A (en) | 1941-11-29 |
Family
ID=23273607
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR867832D Expired FR867832A (en) | 1940-03-29 | 1940-11-28 | Piezoelectric devices |
Country Status (4)
Country | Link |
---|---|
US (1) | US2268413A (en) |
BE (1) | BE441496A (en) |
FR (1) | FR867832A (en) |
GB (1) | GB544834A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2498585A (en) * | 1945-01-01 | 1950-02-21 | Thomas C Flanagan | Piezoelectric crystal holder |
US2444312A (en) * | 1945-05-01 | 1948-06-29 | Rca Corp | Art of sealing metal casings enclosing vibratile elements |
-
0
- BE BE441496D patent/BE441496A/xx unknown
-
1940
- 1940-03-29 US US326764A patent/US2268413A/en not_active Expired - Lifetime
- 1940-11-28 FR FR867832D patent/FR867832A/en not_active Expired
-
1941
- 1941-03-14 GB GB3491/41A patent/GB544834A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB544834A (en) | 1942-04-29 |
US2268413A (en) | 1941-12-30 |
BE441496A (en) |
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