JPS55100721A - Elastic surface wave converter and elastic surface wave filter - Google Patents
Elastic surface wave converter and elastic surface wave filterInfo
- Publication number
- JPS55100721A JPS55100721A JP534980A JP534980A JPS55100721A JP S55100721 A JPS55100721 A JP S55100721A JP 534980 A JP534980 A JP 534980A JP 534980 A JP534980 A JP 534980A JP S55100721 A JPS55100721 A JP S55100721A
- Authority
- JP
- Japan
- Prior art keywords
- surface wave
- elastic surface
- converter
- wave filter
- filter
- 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
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
- H03H9/125—Driving means, e.g. electrodes, coils
- H03H9/145—Driving means, e.g. electrodes, coils for networks using surface acoustic waves
- H03H9/14544—Transducers of particular shape or position
- H03H9/14552—Transducers of particular shape or position comprising split fingers
-
- 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
- H03H9/02842—Means for compensation or elimination of undesirable effects of reflections
-
- 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
- H03H9/14544—Transducers of particular shape or position
-
- 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
-
- 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
- H03H9/14544—Transducers of particular shape or position
- H03H9/14547—Fan shaped; Tilted; Shifted; Slanted; Tapered; Arched; Stepped finger transducers
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7902100A FR2447644A1 (fr) | 1979-01-26 | 1979-01-26 | Transducteur d'ondes elastiques de surface et filtre comprenant un tel transducteur |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55100721A true JPS55100721A (en) | 1980-07-31 |
Family
ID=9221267
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP534980A Pending JPS55100721A (en) | 1979-01-26 | 1980-01-22 | Elastic surface wave converter and elastic surface wave filter |
Country Status (5)
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4463327A (en) * | 1981-09-09 | 1984-07-31 | Tokyo Shibaura Denki Kabushiki Kaisha | Surface acoustic wave device |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4460995A (en) * | 1982-04-21 | 1984-07-17 | Zenith Radio Corporation | Narrow focus compensating transducer for surface acoustic wave filter |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1357193A (en) * | 1971-07-22 | 1974-06-19 | Mullard Ltd | Acoustic surface wave devices |
GB1499330A (en) * | 1974-09-26 | 1978-02-01 | Plessey Co Ltd | Acoustic surface wave filters |
FR2319245A1 (fr) * | 1975-07-24 | 1977-02-18 | Thomson Csf | Transducteur perfectionne pour filtre a ondes de surface a fonction de transfert asymetrique et filtre comportant un tel transducteur |
FR2328323A1 (fr) * | 1975-10-17 | 1977-05-13 | Thomson Csf | Transducteur pour filtre a ondes de surface a diffraction reduite, et filtre comportant un tel transducteur |
GB1585087A (en) * | 1976-07-29 | 1981-02-25 | Plessey Co Ltd | Surface acoustic wave filters |
JPS54844A (en) * | 1977-06-03 | 1979-01-06 | Matsushita Electric Ind Co Ltd | Elastic surface wave filter |
-
1979
- 1979-01-26 FR FR7902100A patent/FR2447644A1/fr active Granted
-
1980
- 1980-01-11 EP EP80400035A patent/EP0014117B1/fr not_active Expired
- 1980-01-11 DE DE8080400035T patent/DE3063999D1/de not_active Expired
- 1980-01-22 JP JP534980A patent/JPS55100721A/ja active Pending
- 1980-01-24 US US06/115,095 patent/US4344051A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4463327A (en) * | 1981-09-09 | 1984-07-31 | Tokyo Shibaura Denki Kabushiki Kaisha | Surface acoustic wave device |
Also Published As
Publication number | Publication date |
---|---|
US4344051A (en) | 1982-08-10 |
EP0014117B1 (fr) | 1983-07-06 |
EP0014117A1 (fr) | 1980-08-06 |
DE3063999D1 (en) | 1983-08-11 |
FR2447644A1 (fr) | 1980-08-22 |
FR2447644B1 (US06262066-20010717-C00424.png) | 1982-12-03 |
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