CA1049646A - Acoustic surface wave device with harmonic coupled transducers - Google Patents
Acoustic surface wave device with harmonic coupled transducersInfo
- Publication number
- CA1049646A CA1049646A CA217,629A CA217629A CA1049646A CA 1049646 A CA1049646 A CA 1049646A CA 217629 A CA217629 A CA 217629A CA 1049646 A CA1049646 A CA 1049646A
- Authority
- CA
- Canada
- Prior art keywords
- transducer
- surface wave
- acoustic
- fingers
- array
- 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
- 239000000758 substrate Substances 0.000 claims abstract description 14
- 230000008878 coupling Effects 0.000 abstract description 12
- 238000010168 coupling process Methods 0.000 abstract description 12
- 238000005859 coupling reaction Methods 0.000 abstract description 12
- 230000000875 corresponding effect Effects 0.000 description 7
- 239000004020 conductor Substances 0.000 description 6
- 238000003491 array Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- GQYHUHYESMUTHG-UHFFFAOYSA-N lithium niobate Chemical compound [Li+].[O-][Nb](=O)=O GQYHUHYESMUTHG-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003340 mental effect Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000010409 thin film Substances 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
- H03H9/125—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 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
- H03H9/14502—Surface acoustic wave [SAW] transducers for a particular purpose
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 |
|---|---|---|---|
| US05/453,616 US3987376A (en) | 1974-03-22 | 1974-03-22 | Acoustic surface wave device with harmonic coupled transducers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1049646A true CA1049646A (en) | 1979-02-27 |
Family
ID=23801305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA217,629A Expired CA1049646A (en) | 1974-03-22 | 1975-01-09 | Acoustic surface wave device with harmonic coupled transducers |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US3987376A (OSRAM) |
| JP (1) | JPS5744256B2 (OSRAM) |
| AU (1) | AU504238B2 (OSRAM) |
| CA (1) | CA1049646A (OSRAM) |
| DE (1) | DE2512671A1 (OSRAM) |
| FR (1) | FR2265220B1 (OSRAM) |
| GB (1) | GB1490882A (OSRAM) |
| NL (1) | NL183330C (OSRAM) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4075582A (en) * | 1976-06-14 | 1978-02-21 | International Business Machines Corporation | Surface acoustic wave device |
| US4249146A (en) * | 1979-02-23 | 1981-02-03 | Trw Inc. | Surface acoustic wave resonators utilizing harmonic frequencies |
| DE2909705C2 (de) * | 1979-03-12 | 1984-09-06 | Siemens AG, 1000 Berlin und 8000 München | Akustische Oberflächenwellenanordnung |
| JPS5797214A (en) * | 1980-12-08 | 1982-06-16 | Matsushita Electric Ind Co Ltd | Transducer for surface wave |
| GB2117593B (en) * | 1982-03-31 | 1985-11-27 | Marconi Co Ltd | Adjusting the frequency response of surface acoustic wave devices |
| JPS58213519A (ja) * | 1982-06-07 | 1983-12-12 | Clarion Co Ltd | 弾性表面波装置 |
| US4491758A (en) * | 1983-05-03 | 1985-01-01 | R F Monolithics, Inc. | Surface wave device with oversampled withdrawal weighting |
| DE3438246A1 (de) * | 1984-10-18 | 1986-04-24 | Siemens AG, 1000 Berlin und 8000 München | Akustisches wellenfilter |
| GB8615522D0 (en) * | 1986-06-25 | 1986-07-30 | Gen Electric Co Plc | Surface acoustic wave filters |
| JP2870751B2 (ja) * | 1987-02-13 | 1999-03-17 | 株式会社東芝 | 弾性表面波フィルタ |
| US5521565A (en) * | 1988-09-28 | 1996-05-28 | Siemens Aktiengesellschaft | Surface wave interdigital transducer and surface wave filter with symmetric or predeterminable asymmetric transfer characteristic between input and output |
| US5264751A (en) * | 1989-10-20 | 1993-11-23 | Thomson-Csf | Unilateral surface wave transducer |
| US5438306A (en) * | 1992-07-02 | 1995-08-01 | Kazuhiko Yamanouchi | Surface acoustic wave filter device with symmetrical electrode arrangement |
| US5952765A (en) * | 1996-11-26 | 1999-09-14 | Trw Inc. | Reduced coupling saw filter |
| JP3266846B2 (ja) * | 1998-01-20 | 2002-03-18 | 東洋通信機株式会社 | 反射反転型弾性表面波変換器及びフィルタ |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3376572A (en) * | 1966-09-15 | 1968-04-02 | Rca Corp | Electroacoustic wave shaping device |
| US3581248A (en) * | 1969-03-26 | 1971-05-25 | Zenith Radio Corp | Acoustic filters |
| US3614463A (en) * | 1970-04-01 | 1971-10-19 | Us Air Force | Microwave acoustic surface wave limiter and method of fabrication |
| US3742396A (en) * | 1971-07-23 | 1973-06-26 | Stanford Research Inst | Grating surface acoustic wave transducer |
| US3727155A (en) * | 1972-03-20 | 1973-04-10 | Zenith Radio Corp | Acoustic surface wave filter |
-
1974
- 1974-03-22 US US05/453,616 patent/US3987376A/en not_active Expired - Lifetime
- 1974-12-19 JP JP49146228A patent/JPS5744256B2/ja not_active Expired
-
1975
- 1975-01-07 GB GB536/75A patent/GB1490882A/en not_active Expired
- 1975-01-09 CA CA217,629A patent/CA1049646A/en not_active Expired
- 1975-01-09 AU AU77201/75A patent/AU504238B2/en not_active Expired
- 1975-03-19 FR FR7508562A patent/FR2265220B1/fr not_active Expired
- 1975-03-20 NL NLAANVRAGE7503373,A patent/NL183330C/xx not_active IP Right Cessation
- 1975-03-21 DE DE19752512671 patent/DE2512671A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| JPS50126351A (OSRAM) | 1975-10-04 |
| DE2512671A1 (de) | 1975-09-25 |
| FR2265220A1 (OSRAM) | 1975-10-17 |
| NL183330C (nl) | 1988-09-16 |
| AU7720175A (en) | 1976-07-15 |
| FR2265220B1 (OSRAM) | 1980-08-14 |
| NL7503373A (nl) | 1975-09-24 |
| JPS5744256B2 (OSRAM) | 1982-09-20 |
| AU504238B2 (en) | 1979-10-04 |
| NL183330B (nl) | 1988-04-18 |
| GB1490882A (en) | 1977-11-02 |
| USB453616I5 (OSRAM) | 1976-01-27 |
| US3987376A (en) | 1976-10-19 |
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