GR890100594A - Μετασχηματιστης με περιελιξη παραλειψης δακτυλων για φιλτρα επιφανειακων κυματων. - Google Patents
Μετασχηματιστης με περιελιξη παραλειψης δακτυλων για φιλτρα επιφανειακων κυματων.Info
- Publication number
- GR890100594A GR890100594A GR890100594A GR890100594A GR890100594A GR 890100594 A GR890100594 A GR 890100594A GR 890100594 A GR890100594 A GR 890100594A GR 890100594 A GR890100594 A GR 890100594A GR 890100594 A GR890100594 A GR 890100594A
- Authority
- GR
- Greece
- Prior art keywords
- transformer
- surface waves
- filters
- waves filters
- concentrating
- Prior art date
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
- H03H9/14517—Means for weighting
- H03H9/14526—Finger withdrawal
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
- Coils Or Transformers For Communication (AREA)
Abstract
Μετασχηματιστής SAW (Σχεδιαγράφημα 2) με περιέλιξη δακτύλου, στον οποίο οι δάκτυλοι (17) που ουσιαστικά πρέπει να παραλειφθούν συνδέονται με τον εκάστοτε άλλο συγκεντρωτικό ζυγό. Χρησιμοποίηση σε φίλτρα χαμηλών απωλειών σαν μετασχηματιστής ζεύξης. ω
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3833101A DE3833101A1 (de) | 1988-09-29 | 1988-09-29 | Wandler mit weglasswichtung fuer oberflaechenwellenfilter |
Publications (1)
Publication Number | Publication Date |
---|---|
GR890100594A true GR890100594A (el) | 1990-10-31 |
Family
ID=6363993
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GR890100594A GR890100594A (el) | 1988-09-29 | 1989-09-20 | Μετασχηματιστης με περιελιξη παραλειψης δακτυλων για φιλτρα επιφανειακων κυματων. |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP0436566B1 (el) |
JP (1) | JPH03502868A (el) |
DE (2) | DE3833101A1 (el) |
DK (1) | DK12991D0 (el) |
ES (1) | ES2016182A6 (el) |
GR (1) | GR890100594A (el) |
PT (1) | PT91838B (el) |
WO (1) | WO1990003691A1 (el) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE9802487D0 (sv) | 1998-07-09 | 1998-07-09 | Sandvik Ab | Cemented carbide insert with binder phase enriched surface zone |
JP3371849B2 (ja) | 1999-04-28 | 2003-01-27 | 株式会社村田製作所 | Saw共振子、複合sawフィルタ及びsawフィルタ |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4468642A (en) * | 1981-06-05 | 1984-08-28 | Hitachi, Ltd. | Band pass filter device |
WO1984004433A1 (en) * | 1983-05-03 | 1984-11-08 | Rf Monolithics | Surface wave device with over sampled withdrawal weighting |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4254387A (en) * | 1977-10-06 | 1981-03-03 | U.S. Philips Corporation | Acoustic wave devices |
JPS5834047A (ja) * | 1981-08-25 | 1983-02-28 | 坂井 康男 | 砕石機 |
US4506239A (en) * | 1982-10-25 | 1985-03-19 | Motorola, Inc. | Compound surface acoustic wave matched filters |
JPS63253712A (ja) * | 1987-04-10 | 1988-10-20 | Hitachi Ltd | 弾性表面波バンドパスフイルタ |
-
1988
- 1988-09-29 DE DE3833101A patent/DE3833101A1/de not_active Withdrawn
-
1989
- 1989-08-23 EP EP89909381A patent/EP0436566B1/de not_active Expired - Lifetime
- 1989-08-23 JP JP1508885A patent/JPH03502868A/ja active Pending
- 1989-08-23 DE DE8989909381T patent/DE58903756D1/de not_active Expired - Fee Related
- 1989-08-23 WO PCT/DE1989/000554 patent/WO1990003691A1/de active IP Right Grant
- 1989-09-20 GR GR890100594A patent/GR890100594A/el unknown
- 1989-09-28 PT PT91838A patent/PT91838B/pt not_active IP Right Cessation
- 1989-09-29 ES ES8903306A patent/ES2016182A6/es not_active Expired - Fee Related
-
1991
- 1991-01-25 DK DK012991A patent/DK12991D0/da unknown
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4468642A (en) * | 1981-06-05 | 1984-08-28 | Hitachi, Ltd. | Band pass filter device |
WO1984004433A1 (en) * | 1983-05-03 | 1984-11-08 | Rf Monolithics | Surface wave device with over sampled withdrawal weighting |
Non-Patent Citations (2)
Title |
---|
CLAIMS SEARCHED: ALL * |
IEEE TRANSACTIONS ON SONICS AND ULTRASONICS, vol. SU-22, no. 6, novembre 1975, pages 395-401, New York, US; H. ENGAN: "Surface acoustic wave multielectrode transducers" * |
Also Published As
Publication number | Publication date |
---|---|
PT91838B (pt) | 1995-07-18 |
DK12991A (da) | 1991-01-25 |
EP0436566B1 (de) | 1993-03-10 |
WO1990003691A1 (de) | 1990-04-05 |
PT91838A (pt) | 1990-03-30 |
JPH03502868A (ja) | 1991-06-27 |
DE3833101A1 (de) | 1990-04-05 |
DE58903756D1 (de) | 1993-04-15 |
EP0436566A1 (de) | 1991-07-17 |
ES2016182A6 (es) | 1990-10-16 |
DK12991D0 (da) | 1991-01-25 |
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