CH246821A - Kristallfilter für elektrische Schwingungen. - Google Patents
Kristallfilter für elektrische Schwingungen.Info
- Publication number
- CH246821A CH246821A CH246821DA CH246821A CH 246821 A CH246821 A CH 246821A CH 246821D A CH246821D A CH 246821DA CH 246821 A CH246821 A CH 246821A
- Authority
- CH
- Switzerland
- Prior art keywords
- crystal
- crystals
- filter according
- filter
- dependent
- Prior art date
Links
- 239000013078 crystal Substances 0.000 title claims description 68
- 230000010355 oscillation Effects 0.000 title claims description 4
- 239000000126 substance Substances 0.000 claims description 14
- 238000000576 coating method Methods 0.000 claims description 8
- 239000004254 Ammonium phosphate Substances 0.000 claims description 3
- 229910000148 ammonium phosphate Inorganic materials 0.000 claims description 3
- 235000019289 ammonium phosphates Nutrition 0.000 claims description 3
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 claims description 3
- 239000010453 quartz Substances 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 2
- 230000001419 dependent effect Effects 0.000 claims 8
- LWIHDJKSTIGBAC-UHFFFAOYSA-K tripotassium phosphate Chemical compound [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 claims 2
- 229910000160 potassium phosphate Inorganic materials 0.000 claims 1
- 235000011009 potassium phosphates Nutrition 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
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
- H03H9/46—Filters
- H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
- H03H9/58—Multiple crystal filters
- H03H9/60—Electric coupling means therefor
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
- H03H9/0023—Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns, or networks having balanced input and output
- H03H9/0095—Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns, or networks having balanced input and output using bulk acoustic wave devices
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 |
|---|---|---|---|
| CH246821T | 1945-04-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH246821A true CH246821A (de) | 1947-01-31 |
Family
ID=4465801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH246821D CH246821A (de) | 1945-04-18 | 1945-04-18 | Kristallfilter für elektrische Schwingungen. |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE464585A (en]) |
| CH (1) | CH246821A (en]) |
-
0
- BE BE464585D patent/BE464585A/xx unknown
-
1945
- 1945-04-18 CH CH246821D patent/CH246821A/de unknown
Also Published As
| Publication number | Publication date |
|---|---|
| BE464585A (en]) |
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