ES8702093A1 - Perfeccionamientos en un filtro electrico de ondas de super-ficie - Google Patents
Perfeccionamientos en un filtro electrico de ondas de super-ficieInfo
- Publication number
- ES8702093A1 ES8702093A1 ES550030A ES550030A ES8702093A1 ES 8702093 A1 ES8702093 A1 ES 8702093A1 ES 550030 A ES550030 A ES 550030A ES 550030 A ES550030 A ES 550030A ES 8702093 A1 ES8702093 A1 ES 8702093A1
- Authority
- ES
- Spain
- Prior art keywords
- substrate
- interdigital transducer
- wave filter
- electrical surface
- 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.)
- Expired
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
- H03H9/02614—Treatment of substrates, e.g. curved, spherical, cylindrical substrates ensuring closed round-about circuits for the acoustical waves
- H03H9/02622—Treatment of substrates, e.g. curved, spherical, cylindrical substrates ensuring closed round-about circuits for the acoustical waves of the surface, including back surface
-
- 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
- H03H9/02614—Treatment of substrates, e.g. curved, spherical, cylindrical substrates ensuring closed round-about circuits for the acoustical waves
- H03H9/02629—Treatment of substrates, e.g. curved, spherical, cylindrical substrates ensuring closed round-about circuits for the acoustical waves of the edges
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
Abstract
FILTRO ELECYTRICO PASABANDA PARA ONDAS MECANICAS DE SUPERFICIE. CONSTA DE UN SUSTRATO (1) EN FORMA DE PLAQUETA DE MATERIAL PIEZOELECTRICO MONOCRISTALINO (NIOBATO DE LITIO). UNA DE LAS CARAS PRESENTA UNOS CONVERTIDORES INTERDIGITALES (IW1, IW2) PARA LA EXCITACION Y EL DESACOPLAMIENTO DE LAS ONDAS DE SUPERFICIE. ESTOS CONVERTIDORES TIENEN UNOS ELECTRODOS ACOPLADOS ENTRE SI A MODO DE PEINE Y, PARA LA SUPRESION DE REFLEXIONES PERTURBADORAS DE LAS ONDAS, UNAS MASAS DE AMORTIGUACION (10, 11) QUE SE ENCUENTRAN ENTRE LA ZONA ACTIVA <B> DEL CONVERTIDOR INTERDIGITAL.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3446022 | 1984-12-17 |
Publications (2)
Publication Number | Publication Date |
---|---|
ES8702093A1 true ES8702093A1 (es) | 1986-12-01 |
ES550030A0 ES550030A0 (es) | 1986-12-01 |
Family
ID=6253012
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES550030A Expired ES8702093A1 (es) | 1984-12-17 | 1985-12-17 | Perfeccionamientos en un filtro electrico de ondas de super-ficie |
Country Status (5)
Country | Link |
---|---|
US (1) | US4672338A (es) |
EP (1) | EP0187918B1 (es) |
JP (1) | JPS61245613A (es) |
DE (1) | DE3583602D1 (es) |
ES (1) | ES8702093A1 (es) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63266912A (ja) * | 1987-04-22 | 1988-11-04 | Showa Electric Wire & Cable Co Ltd | 弾性表面波装置 |
JPS63266913A (ja) * | 1987-04-22 | 1988-11-04 | Showa Electric Wire & Cable Co Ltd | 弾性表面波装置 |
NL9220007A (nl) * | 1991-10-17 | 1993-10-01 | Rif O Z Mikroelektroniki | Met akoestische oppervlaktegolven werkend banddoorlaatfilter |
RU2121213C1 (ru) * | 1991-10-17 | 1998-10-27 | Акционерное общество открытого типа "РИФ" | Полосовой фильтр на поверхностных акустических волнах (пав) |
JP3154402B2 (ja) * | 1997-11-12 | 2001-04-09 | 日本電気株式会社 | Sawフィルタ |
GB9911878D0 (en) * | 1999-05-22 | 1999-07-21 | Marconi Electronic Syst Ltd | Identification tag |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5333557A (en) * | 1976-08-24 | 1978-03-29 | Toshiba Corp | Elastic surface wave element |
US4322651A (en) * | 1977-05-09 | 1982-03-30 | Murata Manufacturing Co., Ltd. | Acoustic surface wave device |
EP0097642A1 (en) * | 1981-12-14 | 1984-01-11 | Gte Products Corporation | Acoustical wax on a surface wave device |
JPS58131809A (ja) * | 1982-01-30 | 1983-08-05 | Toshiba Corp | 弾性表面波素子 |
JPS598419A (ja) * | 1982-07-07 | 1984-01-17 | Hitachi Ltd | 弾性表面波装置 |
US4472694A (en) * | 1982-09-07 | 1984-09-18 | Gte Laboratories Incorporated | Acoustic surface wave device |
GB2127249A (en) * | 1982-09-20 | 1984-04-04 | Philips Electronic Associated | Acoustic surface wave device |
DE3234955A1 (de) * | 1982-09-21 | 1984-03-22 | Siemens AG, 1000 Berlin und 8000 München | Oberflaechenwellenfilter, sowie verfahren zur herstellung des oberflaechenwellenfilters |
DE3235236A1 (de) * | 1982-09-23 | 1984-03-29 | Siemens AG, 1000 Berlin und 8000 München | Oberflaechenwellenfilter, sowie verfahren zur herstellung einer bedaempfungsschicht fuer oberflaechenwellenfilter |
-
1985
- 1985-11-18 DE DE8585114644T patent/DE3583602D1/de not_active Expired - Fee Related
- 1985-11-18 EP EP85114644A patent/EP0187918B1/de not_active Expired - Lifetime
- 1985-12-05 US US06/806,248 patent/US4672338A/en not_active Expired - Lifetime
- 1985-12-12 JP JP60280149A patent/JPS61245613A/ja active Pending
- 1985-12-17 ES ES550030A patent/ES8702093A1/es not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE3583602D1 (de) | 1991-08-29 |
EP0187918A1 (de) | 1986-07-23 |
US4672338A (en) | 1987-06-09 |
ES550030A0 (es) | 1986-12-01 |
EP0187918B1 (de) | 1991-07-24 |
JPS61245613A (ja) | 1986-10-31 |
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