DE2754494C2 - Akustisches Oberflächenwellenfilter - Google Patents
Akustisches OberflächenwellenfilterInfo
- Publication number
- DE2754494C2 DE2754494C2 DE2754494A DE2754494A DE2754494C2 DE 2754494 C2 DE2754494 C2 DE 2754494C2 DE 2754494 A DE2754494 A DE 2754494A DE 2754494 A DE2754494 A DE 2754494A DE 2754494 C2 DE2754494 C2 DE 2754494C2
- Authority
- DE
- Germany
- Prior art keywords
- fingers
- transducer
- overlap length
- finger
- 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.)
- Expired
Links
- 238000010897 surface acoustic wave method Methods 0.000 title description 9
- 239000012876 carrier material Substances 0.000 claims 1
- 239000000919 ceramic Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000006096 absorbing agent Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- WSMQKESQZFQMFW-UHFFFAOYSA-N 5-methyl-pyrazole-3-carboxylic acid Chemical compound CC1=CC(C(O)=O)=NN1 WSMQKESQZFQMFW-UHFFFAOYSA-N 0.000 description 1
- 229910005793 GeO 2 Inorganic materials 0.000 description 1
- 240000000018 Gnetum gnemon Species 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910052771 Terbium Inorganic materials 0.000 description 1
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 description 1
- 229910002113 barium titanate Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 210000001520 comb Anatomy 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- NKZSPGSOXYXWQA-UHFFFAOYSA-N dioxido(oxo)titanium;lead(2+) Chemical compound [Pb+2].[O-][Ti]([O-])=O NKZSPGSOXYXWQA-UHFFFAOYSA-N 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- GQYHUHYESMUTHG-UHFFFAOYSA-N lithium niobate Chemical compound [Li+].[O-][Nb](=O)=O GQYHUHYESMUTHG-UHFFFAOYSA-N 0.000 description 1
- 238000001208 nuclear magnetic resonance pulse sequence Methods 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 229910052714 tellurium Inorganic materials 0.000 description 1
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
- H03H9/46—Filters
- H03H9/64—Filters using surface acoustic waves
- H03H9/6423—Means for obtaining a particular transfer characteristic
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
- H03H9/02—Details
- H03H9/02535—Details of surface acoustic wave devices
- H03H9/02818—Means for compensation or elimination of undesirable effects
- H03H9/02874—Means for compensation or elimination of undesirable effects of direct coupling between input and output transducers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic elements; 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)
- Processing Of Color Television Signals (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP51146504A JPS5931890B2 (ja) | 1976-12-08 | 1976-12-08 | 弾性表面波フイルタ |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE2754494A1 DE2754494A1 (de) | 1978-06-22 |
| DE2754494C2 true DE2754494C2 (de) | 1984-01-05 |
Family
ID=15409114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2754494A Expired DE2754494C2 (de) | 1976-12-08 | 1977-12-07 | Akustisches Oberflächenwellenfilter |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US4223285A (enExample) |
| JP (1) | JPS5931890B2 (enExample) |
| DE (1) | DE2754494C2 (enExample) |
| FR (1) | FR2373917A1 (enExample) |
| GB (1) | GB1593300A (enExample) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55134587A (en) * | 1979-04-05 | 1980-10-20 | Sanyo Electric Co Ltd | Color television receiver |
| JPS5648708A (en) * | 1979-09-28 | 1981-05-02 | Hitachi Ltd | Surface elastic wave filter |
| US4321567A (en) * | 1980-03-24 | 1982-03-23 | Raytheon Company | Combining series sections weighting with withdrawal weighting in SAW transducers |
| JPS5992613A (ja) * | 1982-11-19 | 1984-05-28 | Hitachi Ltd | 弾性表面波装置 |
| US4531149A (en) * | 1983-06-24 | 1985-07-23 | Rca Corporation | Digital variable group delay equalizer for a digital television receiver |
| GB2157522B (en) * | 1984-04-09 | 1987-08-19 | Philips Electronic Associated | Electrical filter comprising an acoustic surface wave device, and method of manufacturing such a filter |
| US4825467A (en) * | 1986-11-25 | 1989-04-25 | International Telesystems, Inc. | Restricted access television transmission system |
| US5654774A (en) * | 1995-06-06 | 1997-08-05 | Thomson Consumer Electronics, Inc. | Tuner for digital satellite receiver |
| TW353245B (en) * | 1995-06-06 | 1999-02-21 | Thomson Consumer Electronics | Saw filter for a tuner of a digital satellite receiver |
| US9568190B2 (en) | 2014-06-13 | 2017-02-14 | Integrated Energy LLC | Systems, apparatus, and methods for treating waste materials |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2036374A5 (enExample) * | 1969-03-12 | 1970-12-24 | Thomson Csf | |
| US3675163A (en) * | 1970-08-26 | 1972-07-04 | Clinton S Hartmann | Cascaded f. m. correlators for long pulses |
| GB1499330A (en) * | 1974-09-26 | 1978-02-01 | Plessey Co Ltd | Acoustic surface wave filters |
| DE2524649C3 (de) * | 1975-06-03 | 1980-11-06 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Fernseh-ZF-Filter nach dem Oberflächenwellenprinzip |
| US4047130A (en) * | 1976-08-27 | 1977-09-06 | Rockwell International Corporation | Surface acoustic wave filter |
-
1976
- 1976-12-08 JP JP51146504A patent/JPS5931890B2/ja not_active Expired
-
1977
- 1977-12-06 US US05/857,908 patent/US4223285A/en not_active Expired - Lifetime
- 1977-12-07 GB GB51012/77A patent/GB1593300A/en not_active Expired
- 1977-12-07 FR FR7736906A patent/FR2373917A1/fr active Granted
- 1977-12-07 DE DE2754494A patent/DE2754494C2/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5931890B2 (ja) | 1984-08-04 |
| JPS5371548A (en) | 1978-06-26 |
| FR2373917B1 (enExample) | 1982-03-12 |
| US4223285A (en) | 1980-09-16 |
| DE2754494A1 (de) | 1978-06-22 |
| GB1593300A (en) | 1981-07-15 |
| FR2373917A1 (fr) | 1978-07-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE3304053C2 (enExample) | ||
| DE2600393C2 (de) | Akustisches Oberflächenwellenfilter | |
| DE69316786T2 (de) | Elastische Oberflächenwellenfilter | |
| EP1125364A1 (de) | Oberflächenwellenanordnung mit zumindest zwei oberflächenwellen-strukturen | |
| DE2521290A1 (de) | Oberflaechenwellenresonatorvorrichtung | |
| DE10206376B4 (de) | Resonatorfilter mit verbesserter Nahselektion | |
| DE19513937C2 (de) | Akustisches Oberflächenwellenfilter | |
| EP0995265A1 (de) | Oberflächenwellenakustikfilter mit verbesserter flankensteilheit | |
| DE2513672A1 (de) | Oberflaechenwellenfilter | |
| DE3025871C2 (de) | Akustische Oberflächenwelleneinrichtung | |
| DE2536408A1 (de) | Oberflaechenschallwellen-einrichtung | |
| DE69321414T2 (de) | Filtergerät mit akustischen Oberflächenwellen | |
| DE3838383C2 (enExample) | ||
| DE2238925C2 (de) | Akustisches oberflaechenwellenwandlersystem | |
| DE2831584C2 (de) | Wandler für akustische Oberflächenwellen und Filter auf der Basis dieser Wandler | |
| DE2531551A1 (de) | Elastisches oberflaechenwellenfilter | |
| DE2820046C2 (de) | Akustisches Oberflächenwellen- Bauelement | |
| DE3321843C2 (enExample) | ||
| DE2839851C2 (de) | Oberflächenwellenanordnung mit verbesserter Störsignalunterdrückung | |
| DE2826891A1 (de) | Elastizitaetsoberflaechenwellen-bauelement | |
| DE3700498C2 (enExample) | ||
| DE3827962A1 (de) | Filter zur unterdrueckung von oberflaechen-interferenzen fuer satellitenkommunikations-empfaenger | |
| DE2364134A1 (de) | Elektromechanisches oberflaechenwellenfilter | |
| DE69716846T2 (de) | Oberflächenwellen-Resonatorfilter | |
| DE2754494A1 (de) | Elastischoberflaechenwellenfilter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OAP | Request for examination filed | ||
| OD | Request for examination | ||
| 8125 | Change of the main classification |
Ipc: H03H 9/64 |
|
| D2 | Grant after examination | ||
| 8364 | No opposition during term of opposition |