JPS5296840A - Color television receiver pif surface wave filter - Google Patents
Color television receiver pif surface wave filterInfo
- Publication number
- JPS5296840A JPS5296840A JP1280976A JP1280976A JPS5296840A JP S5296840 A JPS5296840 A JP S5296840A JP 1280976 A JP1280976 A JP 1280976A JP 1280976 A JP1280976 A JP 1280976A JP S5296840 A JPS5296840 A JP S5296840A
- Authority
- JP
- Japan
- Prior art keywords
- pif
- television receiver
- wave filter
- surface wave
- color television
- 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
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
- H03H9/02535—Details of surface acoustic wave devices
- H03H9/02818—Means for compensation or elimination of undesirable effects
- H03H9/02881—Means for compensation or elimination of undesirable effects of diffraction of wave beam
-
- 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
- H03H9/125—Driving means, e.g. electrodes, coils
- H03H9/145—Driving means, e.g. electrodes, coils for networks using surface acoustic waves
- H03H9/14517—Means for weighting
- H03H9/1452—Means for weighting by finger overlap length, apodisation
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
Abstract
PURPOSE:To prevent the occurrence of sprious radiation, by making the length of opening for the output electrode 1.05 to 1.70 times the active maximum length of the input electrode and by setting two trap levels to the specified level.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1280976A JPS5847089B2 (en) | 1976-02-10 | 1976-02-10 | Color television receiver PIF surface wave filter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1280976A JPS5847089B2 (en) | 1976-02-10 | 1976-02-10 | Color television receiver PIF surface wave filter |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5296840A true JPS5296840A (en) | 1977-08-15 |
JPS5847089B2 JPS5847089B2 (en) | 1983-10-20 |
Family
ID=11815705
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1280976A Expired JPS5847089B2 (en) | 1976-02-10 | 1976-02-10 | Color television receiver PIF surface wave filter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5847089B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57127321A (en) * | 1981-01-30 | 1982-08-07 | Fujitsu Ltd | Surface acoustic wave filter |
-
1976
- 1976-02-10 JP JP1280976A patent/JPS5847089B2/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57127321A (en) * | 1981-01-30 | 1982-08-07 | Fujitsu Ltd | Surface acoustic wave filter |
EP0057598A2 (en) * | 1981-01-30 | 1982-08-11 | Fujitsu Limited | Acoustic surface wave device |
Also Published As
Publication number | Publication date |
---|---|
JPS5847089B2 (en) | 1983-10-20 |
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