BE441496A - - Google Patents
Info
- Publication number
- BE441496A BE441496A BE441496DA BE441496A BE 441496 A BE441496 A BE 441496A BE 441496D A BE441496D A BE 441496DA BE 441496 A BE441496 A BE 441496A
- Authority
- BE
- Belgium
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
- H03H9/02—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 elements; 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 elements; Electromechanical resonators
- H03H9/02—Details
- H03H9/05—Holders or supports
- H03H9/0504—Holders or 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 elements; Electromechanical resonators
- H03H9/02—Details
- H03H9/05—Holders or 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 elements; 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 |
|---|---|
| BE441496A true BE441496A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
Family
ID=23273607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE441496D BE441496A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1940-03-29 |
Country Status (4)
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/fr 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 |
| FR867832A (fr) | 1941-11-29 |