JPH0324086B2 - - Google Patents
Info
- Publication number
- JPH0324086B2 JPH0324086B2 JP16608780A JP16608780A JPH0324086B2 JP H0324086 B2 JPH0324086 B2 JP H0324086B2 JP 16608780 A JP16608780 A JP 16608780A JP 16608780 A JP16608780 A JP 16608780A JP H0324086 B2 JPH0324086 B2 JP H0324086B2
- Authority
- JP
- Japan
- Prior art keywords
- waveguide
- electrode
- electrodes
- surface wave
- distribution
- 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
- 239000002184 metal Substances 0.000 claims description 25
- 238000009826 distribution Methods 0.000 claims description 20
- 238000010897 surface acoustic wave method Methods 0.000 claims description 9
- 239000000758 substrate Substances 0.000 claims description 6
- 230000007423 decrease Effects 0.000 claims description 5
- 239000010408 film Substances 0.000 description 12
- 230000000694 effects Effects 0.000 description 11
- 230000004044 response Effects 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 230000001902 propagating effect Effects 0.000 description 5
- 230000006866 deterioration Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000013307 optical fiber Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000007740 vapor deposition Methods 0.000 description 2
- 238000004891 communication Methods 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
- 238000009795 derivation Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000009827 uniform distribution Methods 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
- H03H9/02—Details
- H03H9/02535—Details of surface acoustic wave devices
- H03H9/02637—Details concerning reflective or coupling arrays
- H03H9/02645—Waffle-iron or dot arrays
-
- 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
- H03H9/02637—Details concerning reflective or coupling arrays
- H03H9/02779—Continuous surface reflective arrays
-
- 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
- H03H9/02881—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 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)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16608780A JPS5789321A (en) | 1980-11-25 | 1980-11-25 | Surface acoustic wave device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16608780A JPS5789321A (en) | 1980-11-25 | 1980-11-25 | Surface acoustic wave device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5789321A JPS5789321A (en) | 1982-06-03 |
| JPH0324086B2 true JPH0324086B2 (enrdf_load_stackoverflow) | 1991-04-02 |
Family
ID=15824741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16608780A Granted JPS5789321A (en) | 1980-11-25 | 1980-11-25 | Surface acoustic wave device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5789321A (enrdf_load_stackoverflow) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0998061A (ja) * | 1995-07-24 | 1997-04-08 | Canon Inc | Ｓａｗマッチドフィルタ及びこれを用いた受信装置及び通信システム |
| JP2000278083A (ja) * | 1999-03-24 | 2000-10-06 | Fujitsu Ltd | 弾性表面波フィルタ |
| JP2012085109A (ja) * | 2010-10-12 | 2012-04-26 | Japan Radio Co Ltd | 弾性表面波デバイス |
-
1980
- 1980-11-25 JP JP16608780A patent/JPS5789321A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5789321A (en) | 1982-06-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4155056A (en) | Cascaded grating resonator filters with external input-output couplers | |
| US6791236B1 (en) | Method utilizing the saw velocity dispersion effect for weighting by shaping the electrode fingers of a saw interdigital transducer and apparatus produced thereby | |
| US3662293A (en) | Acoustic-wave transmitting device | |
| US4336514A (en) | Acoustic wave devices | |
| EP0026114A1 (en) | Surface acoustic wave device | |
| US4055820A (en) | Reflective dot array for acoustic wave processing | |
| EP0671813A1 (en) | Electrode structure with constant velocity and predetermined reflectivity | |
| JPH0324086B2 (enrdf_load_stackoverflow) | ||
| US4114119A (en) | Wide band low loss acoustic wave device | |
| US4242653A (en) | Triple transit suppression for bulk acoustic delay lines | |
| US4210883A (en) | Technique for widening the temperature range of surface acoustic wave reflection array filters | |
| US4048594A (en) | Surface acoustic wave filter | |
| US4426595A (en) | Acoustic surface wave device with improved band-pass characteristics | |
| JP2628985B2 (ja) | 改良された表面音波フィルタ | |
| US3831115A (en) | Acoustic surface waveguide with graded profile cross section | |
| CA1252557A (en) | Saw devices including resistive films | |
| EP0117081B1 (en) | Surface acoustic wave dispersive delay lines | |
| JP2000077973A (ja) | トランスバーサルｓａｗフィルタ | |
| EP1000381B1 (en) | Acousto-optic devices having an acoustic attenuator structure | |
| GB2304917A (en) | Integrated optical devices | |
| GB2060305A (en) | Acoustic wave device including a reflective array | |
| US3735292A (en) | Ultrasonic delay line having offset boundary surfaces at point where beam strikes surface | |
| JPS6216051B2 (enrdf_load_stackoverflow) | ||
| JPS5830216A (ja) | 弾性波装置 | |
| JPH0241925B2 (enrdf_load_stackoverflow) |