JPS6454916A - Interdigital filter - Google Patents
Interdigital filterInfo
- Publication number
- JPS6454916A JPS6454916A JP21203187A JP21203187A JPS6454916A JP S6454916 A JPS6454916 A JP S6454916A JP 21203187 A JP21203187 A JP 21203187A JP 21203187 A JP21203187 A JP 21203187A JP S6454916 A JPS6454916 A JP S6454916A
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- piezoelectric vibrator
- signal voltage
- face
- interdigital
- 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.)
- Pending
Links
Landscapes
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Abstract
PURPOSE:To simplify the structure by employing a piezoelectric vibrator with a two-split electrode formed on its upper face and with an entire face electrode formed to its lower face and utilizing a thickness shear vibration as an input/ output transducer thereby eliminating the need for interdigital forming impedance. CONSTITUTION:The piezoelectric vibrator whose upper face is formed with the two-split electrodes 17a, 17b and whose lower face is formed by the entire face electrode 17c utilizing the thickness-shear vibration mode is fitted to one slope of an ultrasonic wave delay medium 1 with the electrode 2 formed thereupon as the input/output transducer. Moreover, a signal voltage application lead wire 9 and a delay signal extraction lead wire 10 are fitted onto the split electrodes 17a, 17b of the transducer. Thus, a signal being the result of mixture of a delay signal voltage and an applied signal voltage is outputted by the piezoelectric vibrator between the electrodes 17b and 17c. Thus, the interdigital characteristic can be formed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21203187A JPS6454916A (en) | 1987-08-26 | 1987-08-26 | Interdigital filter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21203187A JPS6454916A (en) | 1987-08-26 | 1987-08-26 | Interdigital filter |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6454916A true JPS6454916A (en) | 1989-03-02 |
Family
ID=16615722
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP21203187A Pending JPS6454916A (en) | 1987-08-26 | 1987-08-26 | Interdigital filter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6454916A (en) |
-
1987
- 1987-08-26 JP JP21203187A patent/JPS6454916A/en active Pending
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