CA1060962A - Surface wave filters with coupled resonators - Google Patents
Surface wave filters with coupled resonatorsInfo
- Publication number
- CA1060962A CA1060962A CA243,313A CA243313A CA1060962A CA 1060962 A CA1060962 A CA 1060962A CA 243313 A CA243313 A CA 243313A CA 1060962 A CA1060962 A CA 1060962A
- Authority
- CA
- Canada
- Prior art keywords
- resonators
- resonator
- filter
- acoustic
- coupling
- 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
- 239000000463 material Substances 0.000 claims abstract description 6
- 230000008878 coupling Effects 0.000 claims description 52
- 238000010168 coupling process Methods 0.000 claims description 52
- 238000005859 coupling reaction Methods 0.000 claims description 52
- 230000002463 transducing effect Effects 0.000 claims description 13
- 238000009966 trimming Methods 0.000 claims description 12
- 238000003491 array Methods 0.000 claims description 7
- 230000001419 dependent effect Effects 0.000 claims 2
- 239000013078 crystal Substances 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000004044 response Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000001902 propagating effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- GQYHUHYESMUTHG-UHFFFAOYSA-N lithium niobate Chemical compound [Li+].[O-][Nb](=O)=O GQYHUHYESMUTHG-UHFFFAOYSA-N 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 238000010897 surface acoustic wave method 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
- H03H9/46—Filters
- H03H9/64—Filters using surface acoustic waves
- H03H9/6423—Means for obtaining a particular transfer characteristic
- H03H9/6433—Coupled resonator filters
- H03H9/644—Coupled resonator filters having two acoustic tracks
- H03H9/6443—Coupled resonator filters having two acoustic tracks being acoustically coupled
- H03H9/6446—Coupled resonator filters having two acoustic tracks being acoustically coupled by floating multistrip couplers
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1724/75A GB1529941A (en) | 1975-01-15 | 1975-01-15 | Electrical filters including coupled resonators |
| GB16478/78A GB1529943A (en) | 1975-01-15 | 1975-12-10 | Electrical filters including coupled resonators |
| GB16477/78A GB1529942A (en) | 1975-01-15 | 1975-12-10 | Electrical filters including coupled resonators |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1060962A true CA1060962A (en) | 1979-08-21 |
Family
ID=27253932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA243,313A Expired CA1060962A (en) | 1975-01-15 | 1976-01-12 | Surface wave filters with coupled resonators |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US4065735A (cg-RX-API-DMAC10.html) |
| CA (1) | CA1060962A (cg-RX-API-DMAC10.html) |
| DE (1) | DE2600393C2 (cg-RX-API-DMAC10.html) |
| FR (1) | FR2298230A1 (cg-RX-API-DMAC10.html) |
| GB (3) | GB1529941A (cg-RX-API-DMAC10.html) |
Families Citing this family (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1431112A (en) * | 1973-08-31 | 1976-04-07 | Mullard Ltd | Acoustic surface-wave devices |
| GB1513466A (en) * | 1975-09-19 | 1978-06-07 | Mullard Ltd | Acoustic surface wave devices |
| GB1554366A (en) * | 1977-02-04 | 1979-10-17 | Philips Electronic Associated | Acoustic surface wave devices |
| US4130813A (en) * | 1977-05-23 | 1978-12-19 | Raytheon Company | Surface wave device having enhanced reflectivity gratings |
| US4224683A (en) * | 1978-08-25 | 1980-09-23 | Rockwell International Corporation | Multiple-channel acousto-electric convolver |
| US4206426A (en) * | 1978-11-29 | 1980-06-03 | Sperry Corporation | Multiple pole surface wave acoustic filters employing angled grooved distributed reflector arrays |
| DE2909705C2 (de) * | 1979-03-12 | 1984-09-06 | Siemens AG, 1000 Berlin und 8000 München | Akustische Oberflächenwellenanordnung |
| JPS5925525B2 (ja) * | 1979-08-31 | 1984-06-19 | 株式会社東芝 | 弾性表面波共振子 |
| US4278492A (en) * | 1980-01-21 | 1981-07-14 | Hewlett-Packard Company | Frequency trimming of surface acoustic wave devices |
| US4325038A (en) * | 1980-09-26 | 1982-04-13 | Bell Telephone Laboratories, Incorporated | SAW Resonator filters with improved temperature stability |
| JPS61251223A (ja) * | 1985-04-27 | 1986-11-08 | Pioneer Electronic Corp | 弾性表面波共振子 |
| DE4126334A1 (de) * | 1991-08-08 | 1993-02-18 | Siemens Matsushita Components | Verfahren zur frequenzgenauen herstellung von oberflaechenwellen-resonatoren |
| US5600287A (en) * | 1994-02-03 | 1997-02-04 | Motorola, Inc. | Acoustic wave filter with reduced bulk-wave scattering loss, ladder filter incorporating same and method |
| US5434466A (en) * | 1994-05-31 | 1995-07-18 | Motorola, Inc. | Acoustic wave filter with reduced bulk-wave scattering loss and method |
| JP3487772B2 (ja) * | 1998-03-11 | 2004-01-19 | 富士通株式会社 | 弾性表面波フィルタ |
| US5929724A (en) * | 1998-07-28 | 1999-07-27 | Com Dev Ltd. | Low loss saw filters with non-sequential coupling and method of operation thereof |
| US8143681B2 (en) * | 2006-04-20 | 2012-03-27 | The George Washington University | Saw devices, processes for making them, and methods of use |
| US20100007444A1 (en) * | 2006-04-20 | 2010-01-14 | Anis Nurashikin Nordin | GHz Surface Acoustic Resonators in RF-CMOS |
| US20090124513A1 (en) * | 2007-04-20 | 2009-05-14 | Patricia Berg | Multiplex Biosensor |
| US8018010B2 (en) * | 2007-04-20 | 2011-09-13 | The George Washington University | Circular surface acoustic wave (SAW) devices, processes for making them, and methods of use |
| US8960004B2 (en) | 2010-09-29 | 2015-02-24 | The George Washington University | Synchronous one-pole surface acoustic wave resonator |
| US12491111B2 (en) | 2016-05-26 | 2025-12-09 | Anand Deo | Medical instrument for in vivo heat source |
| US11152232B2 (en) | 2016-05-26 | 2021-10-19 | Anand Deo | Frequency and phase controlled transducers and sensing |
| US9536758B1 (en) | 2016-05-26 | 2017-01-03 | Anand Deo | Time-varying frequency powered semiconductor substrate heat source |
| EP3818586B1 (en) | 2018-07-03 | 2025-10-15 | Deo, Anand | Planar transmission line resonator frequency control of localized transducers |
| FR3115428A1 (fr) * | 2020-10-19 | 2022-04-22 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Dispositif électromécanique à fréquence de résonance ajustable |
| WO2023064873A1 (en) | 2021-10-13 | 2023-04-20 | Deo Anand | Conformable polymer for frequency-selectable heating locations |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2115412A1 (de) * | 1971-03-30 | 1972-10-12 | Siemens Ag | Piezoelektrisches Filter nach dem Oberfl ächenwellenprinzip |
| US3739290A (en) * | 1971-05-05 | 1973-06-12 | Secr Defence | Acoustic surface wave devices |
| BE785945A (fr) * | 1971-07-06 | 1973-01-08 | Siemens Ag | Filtre electrique utilisant le principe des ondes de surface |
| US3716809A (en) * | 1971-08-11 | 1973-02-13 | Us Air Force | Acoustic surface wave resonator |
| FR2235633A5 (cg-RX-API-DMAC10.html) * | 1973-06-29 | 1975-01-24 | Thomson Csf | |
| US3886504A (en) * | 1974-05-20 | 1975-05-27 | Texas Instruments Inc | Acoustic surface wave resonator devices |
| US3983517A (en) | 1974-12-20 | 1976-09-28 | Hughes Aircraft Company | Surface acoustic wave multi-channel filter |
-
1975
- 1975-01-15 GB GB1724/75A patent/GB1529941A/en not_active Expired
- 1975-12-10 GB GB16477/78A patent/GB1529942A/en not_active Expired
- 1975-12-10 GB GB16478/78A patent/GB1529943A/en not_active Expired
-
1976
- 1976-01-07 DE DE2600393A patent/DE2600393C2/de not_active Expired
- 1976-01-12 CA CA243,313A patent/CA1060962A/en not_active Expired
- 1976-01-12 US US05/648,308 patent/US4065735A/en not_active Expired - Lifetime
- 1976-01-14 FR FR7600813A patent/FR2298230A1/fr active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| DE2600393C2 (de) | 1985-02-07 |
| GB1529942A (en) | 1978-10-25 |
| DE2600393A1 (de) | 1976-07-22 |
| FR2298230B1 (cg-RX-API-DMAC10.html) | 1979-01-05 |
| GB1529941A (en) | 1978-10-25 |
| GB1529943A (en) | 1978-10-25 |
| US4065735A (en) | 1977-12-27 |
| FR2298230A1 (fr) | 1976-08-13 |
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