JPS5772412A - Tandem type ceramic filter - Google Patents
Tandem type ceramic filterInfo
- Publication number
- JPS5772412A JPS5772412A JP14800280A JP14800280A JPS5772412A JP S5772412 A JPS5772412 A JP S5772412A JP 14800280 A JP14800280 A JP 14800280A JP 14800280 A JP14800280 A JP 14800280A JP S5772412 A JPS5772412 A JP S5772412A
- Authority
- JP
- Japan
- Prior art keywords
- electrodes
- covered
- filter element
- ceramic filter
- tandem type
- 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
- 239000000919 ceramic Substances 0.000 title abstract 2
- 229910052573 porcelain Inorganic materials 0.000 abstract 3
- 230000008878 coupling Effects 0.000 abstract 2
- 238000010168 coupling process Methods 0.000 abstract 2
- 238000005859 coupling reaction Methods 0.000 abstract 2
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H3/00—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators
- H03H3/007—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks
- H03H3/02—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezoelectric or electrostrictive resonators or networks
- H03H3/04—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezoelectric or electrostrictive resonators or networks for obtaining desired frequency or temperature coefficient
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Abstract
PURPOSE:To obtain a good filter characteristic, by facilitating the adjustment of a frequency by a structure where electrodes are not exposed on the surface. CONSTITUTION:Electrodes 31, 31', 32, 32', 33 and 33' are formed on a ceramic raw sheet 30 and are covered with a thin porcelain layer 30. Since the piezeo-electric porcelain is high bonding materials essentially, the piezo-electric reaction is very strong, and consequently, the cutoff frequency in the electrode part is very lower than that in the part without electrodes, and a trouble is not given for energy shutting even if electrodes are covered with the thin porcelain layer. A capacity coupling part 33' and filter element electrodes 31' and 32' are separated from each other to prevent capacity coupling parts 33 and 33' from being polaized in the partial polarizing treatment of filter element electrodes 31, 31', 32, and 32', thus preventing the occurrence of ripple in the pass band.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14800280A JPS5772412A (en) | 1980-10-22 | 1980-10-22 | Tandem type ceramic filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14800280A JPS5772412A (en) | 1980-10-22 | 1980-10-22 | Tandem type ceramic filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5772412A true JPS5772412A (en) | 1982-05-06 |
| JPS6312401B2 JPS6312401B2 (en) | 1988-03-18 |
Family
ID=15442909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14800280A Granted JPS5772412A (en) | 1980-10-22 | 1980-10-22 | Tandem type ceramic filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5772412A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6002308A (en) * | 1997-04-01 | 1999-12-14 | Murata Manufacturing Co., Ltd. | Piezoelectric filter with a capacitor on a substrate having an unpolarized portion |
-
1980
- 1980-10-22 JP JP14800280A patent/JPS5772412A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6002308A (en) * | 1997-04-01 | 1999-12-14 | Murata Manufacturing Co., Ltd. | Piezoelectric filter with a capacitor on a substrate having an unpolarized portion |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6312401B2 (en) | 1988-03-18 |
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