CA1227837A - Narrow-band beam steering system - Google Patents
Narrow-band beam steering systemInfo
- Publication number
- CA1227837A CA1227837A CA000477356A CA477356A CA1227837A CA 1227837 A CA1227837 A CA 1227837A CA 000477356 A CA000477356 A CA 000477356A CA 477356 A CA477356 A CA 477356A CA 1227837 A CA1227837 A CA 1227837A
- Authority
- CA
- Canada
- Prior art keywords
- sine
- summing
- cosine
- circuit
- signal
- 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
- 239000003990 capacitor Substances 0.000 claims abstract description 65
- 230000010363 phase shift Effects 0.000 claims abstract description 63
- 239000002131 composite material Substances 0.000 claims description 27
- 230000008878 coupling Effects 0.000 claims description 9
- 238000010168 coupling process Methods 0.000 claims description 9
- 238000005859 coupling reaction Methods 0.000 claims description 9
- 230000006872 improvement Effects 0.000 claims description 9
- 230000001427 coherent effect Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000003491 array Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000750 progressive effect Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 210000003423 ankle Anatomy 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
- H01Q3/30—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array
- H01Q3/34—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array by electrical means
- H01Q3/36—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array by electrical means with variable phase-shifters
- H01Q3/38—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array by electrical means with variable phase-shifters the phase-shifters being digital
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/18—Methods or devices for transmitting, conducting or directing sound
- G10K11/26—Sound-focusing or directing, e.g. scanning
- G10K11/34—Sound-focusing or directing, e.g. scanning using electrical steering of transducer arrays, e.g. beam steering
- G10K11/341—Circuits therefor
- G10K11/346—Circuits therefor using phase variation
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H19/00—Networks using time-varying elements, e.g. N-path filters
- H03H19/004—Switched capacitor networks
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US593,155 | 1984-03-26 | ||
| US06/593,155 US4616231A (en) | 1984-03-26 | 1984-03-26 | Narrow-band beam steering system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1227837A true CA1227837A (en) | 1987-10-06 |
Family
ID=24373608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000477356A Expired CA1227837A (en) | 1984-03-26 | 1985-03-25 | Narrow-band beam steering system |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US4616231A (2) |
| EP (1) | EP0174948A1 (2) |
| CA (1) | CA1227837A (2) |
| ES (1) | ES8703065A1 (2) |
| GR (1) | GR850479B (2) |
| IT (1) | IT1209944B (2) |
| WO (1) | WO1985004508A1 (2) |
Families Citing this family (43)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5014061A (en) * | 1989-04-24 | 1991-05-07 | Technology Research International | Adaptive multifrequency signal combining system |
| US5019793A (en) * | 1990-05-21 | 1991-05-28 | Hughes Aircraft Company | Digitally implemented variable phase shifter and amplitude weighting device |
| US6111816A (en) * | 1997-02-03 | 2000-08-29 | Teratech Corporation | Multi-dimensional beamforming device |
| US6721235B2 (en) | 1997-02-03 | 2004-04-13 | Teratech Corporation | Steerable beamforming system |
| US6292433B1 (en) | 1997-02-03 | 2001-09-18 | Teratech Corporation | Multi-dimensional beamforming device |
| US6842401B2 (en) | 2000-04-06 | 2005-01-11 | Teratech Corporation | Sonar beamforming system |
| US6506154B1 (en) * | 2000-11-28 | 2003-01-14 | Insightec-Txsonics, Ltd. | Systems and methods for controlling a phased array focused ultrasound system |
| US10052497B2 (en) | 2005-07-22 | 2018-08-21 | The Board Of Trustees Of The Leland Stanford Junior University | System for optical stimulation of target cells |
| US8926959B2 (en) | 2005-07-22 | 2015-01-06 | The Board Of Trustees Of The Leland Stanford Junior University | System for optical stimulation of target cells |
| US9238150B2 (en) | 2005-07-22 | 2016-01-19 | The Board Of Trustees Of The Leland Stanford Junior University | Optical tissue interface method and apparatus for stimulating cells |
| EP1919497B1 (en) | 2005-07-22 | 2020-02-12 | The Board of Trustees of the Leland Stanford Junior University | Light-activated cation channel and uses thereof |
| US9274099B2 (en) | 2005-07-22 | 2016-03-01 | The Board Of Trustees Of The Leland Stanford Junior University | Screening test drugs to identify their effects on cell membrane voltage-gated ion channel |
| WO2008086470A1 (en) | 2007-01-10 | 2008-07-17 | The Board Of Trustees Of The Leland Stanford Junior University | System for optical stimulation of target cells |
| WO2008101128A1 (en) | 2007-02-14 | 2008-08-21 | The Board Of Trustees Of The Leland Stanford Junior University | System, method and applications involving identification of biological circuits such as neurological characteristics |
| WO2008106694A2 (en) | 2007-03-01 | 2008-09-04 | The Board Of Trustees Of The Leland Stanford Junior University | Systems, methods and compositions for optical stimulation of target cells |
| JP2009088246A (ja) * | 2007-09-28 | 2009-04-23 | Canon Inc | 露光装置およびデバイス製造方法 |
| US10434327B2 (en) | 2007-10-31 | 2019-10-08 | The Board Of Trustees Of The Leland Stanford Junior University | Implantable optical stimulators |
| US10035027B2 (en) | 2007-10-31 | 2018-07-31 | The Board Of Trustees Of The Leland Stanford Junior University | Device and method for ultrasonic neuromodulation via stereotactic frame based technique |
| MY169771A (en) | 2008-04-23 | 2019-05-15 | Univ Leland Stanford Junior | Systems, methods and compositions for optical stimulation of target cells |
| WO2009148946A2 (en) | 2008-05-29 | 2009-12-10 | The Board Of Trustees Of The Leland Stanford Junior University | Cell line, system and method for optical control of secondary messengers |
| EP2303405A4 (en) | 2008-06-17 | 2017-12-27 | The Board of Trustees of the Leland Stanford Junior University | Apparatus and methods for controlling cellular development |
| JP2011525130A (ja) | 2008-06-17 | 2011-09-15 | ボード オブ トラスティーズ オブ ザ レランド スタンフォード ジュニア ユニバーシティ | 光伝送素子を用いた標的細胞の光刺激のための方法、システム、および装置 |
| WO2010006049A1 (en) | 2008-07-08 | 2010-01-14 | The Board Of Trustees Of The Leland Stanford Junior University | Materials and approaches for optical stimulation of the peripheral nervous system |
| NZ602416A (en) | 2008-11-14 | 2014-08-29 | Univ Leland Stanford Junior | Optically-based stimulation of target cells and modifications thereto |
| US9177543B2 (en) | 2009-08-26 | 2015-11-03 | Insightec Ltd. | Asymmetric ultrasound phased-array transducer for dynamic beam steering to ablate tissues in MRI |
| US8661873B2 (en) | 2009-10-14 | 2014-03-04 | Insightec Ltd. | Mapping ultrasound transducers |
| WO2011116238A2 (en) | 2010-03-17 | 2011-09-22 | The Board Of Trustees Of The Leland Stanford Junior University. | Light-sensitive ion-passing molecules |
| US9852727B2 (en) | 2010-04-28 | 2017-12-26 | Insightec, Ltd. | Multi-segment ultrasound transducers |
| WO2012061679A2 (en) | 2010-11-05 | 2012-05-10 | The Board Of Trustees Of The Leland Stanford Junior University | Light-activated chimeric opsins and methods of using the same |
| ES2684307T3 (es) | 2010-11-05 | 2018-10-02 | The Board Of Trustees Of The Leland Stanford Junior University | Proteínas estabilizadas de tipo opsina de función escalonada y métodos de uso de las mismas |
| CN106376525A (zh) | 2010-11-05 | 2017-02-08 | 斯坦福大学托管董事会 | 记忆功能的控制和表征 |
| CN106106368A (zh) | 2010-11-05 | 2016-11-16 | 斯坦福大学托管董事会 | 光控cns功能障碍 |
| CN106422081B (zh) | 2010-11-05 | 2019-06-21 | 斯坦福大学托管董事会 | 用于光遗传学方法的光的上转换 |
| AU2011323235B2 (en) | 2010-11-05 | 2015-10-29 | The Board Of Trustees Of The Leland Stanford Junior University | Optogenetic control of reward-related behaviors |
| US8696722B2 (en) | 2010-11-22 | 2014-04-15 | The Board Of Trustees Of The Leland Stanford Junior University | Optogenetic magnetic resonance imaging |
| CA2859364C (en) | 2011-12-16 | 2019-05-07 | The Board Of Trustees Of The Leland Stanford Junior University | Opsin polypeptides and methods of use thereof |
| EP3205374B1 (en) | 2012-02-21 | 2019-03-27 | The Board of Trustees of The Leland Stanford Junior University | Compositions for treating neurogenic disorders of the pelvic floor |
| US9636380B2 (en) | 2013-03-15 | 2017-05-02 | The Board Of Trustees Of The Leland Stanford Junior University | Optogenetic control of inputs to the ventral tegmental area |
| JP6594854B2 (ja) | 2013-03-15 | 2019-10-23 | ザ ボード オブ トラスティーズ オブ ザ レランド スタンフォード ジュニア ユニバーシティー | 行動状態の光遺伝学的制御方法 |
| AU2014260101B2 (en) | 2013-04-29 | 2018-07-26 | Humboldt-Universitat Zu Berlin | Devices, systems and methods for optogenetic modulation of action potentials in target cells |
| EP3033427A4 (en) | 2013-08-14 | 2017-05-31 | The Board Of Trustees Of The University Of the Leland Stanford Junior University | Compositions and methods for controlling pain |
| WO2016209654A1 (en) | 2015-06-22 | 2016-12-29 | The Board Of Trustees Of The Leland Stanford Junior University | Methods and devices for imaging and/or optogenetic control of light-responsive neurons |
| US11294165B2 (en) | 2017-03-30 | 2022-04-05 | The Board Of Trustees Of The Leland Stanford Junior University | Modular, electro-optical device for increasing the imaging field of view using time-sequential capture |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3002188A (en) * | 1959-04-14 | 1961-09-26 | Frank R Abbott | Harmonic wave beam-steering system |
| US3670355A (en) * | 1970-03-23 | 1972-06-20 | Kashira Sakamoto | Wiper assembly for vehicles |
| US4228531A (en) * | 1970-09-17 | 1980-10-14 | The United States Of America As Represented By The Secretary Of The Navy | Automatic underwater null steering |
| US3863258A (en) * | 1971-09-14 | 1975-01-28 | Litton Systems Inc | Binary beam system |
| US3909751A (en) * | 1973-12-28 | 1975-09-30 | Hughes Aircraft Co | Microwave switch and shifter including a bistate capacitor |
| US3905009A (en) * | 1974-09-20 | 1975-09-09 | Us Navy | Transducer array scanning system |
| GB2022256B (en) * | 1978-05-23 | 1983-05-18 | Secr Defence | Sonar beam-forming |
| US4468749A (en) * | 1980-08-20 | 1984-08-28 | Fujitsu Limited | Adjustable attenuator circuit |
| DE3118198A1 (de) * | 1981-05-08 | 1982-11-25 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Schalter-kondensator-filter |
| DE3277105D1 (en) * | 1981-05-08 | 1987-10-01 | Hitachi Ltd | Signal voltage dividing circuit |
| US4532515A (en) * | 1982-02-10 | 1985-07-30 | Cantrell Ben H | Angle of arrival measurements for two unresolved sources |
| JPS58151724A (ja) * | 1982-03-05 | 1983-09-09 | Nec Corp | 受信機 |
-
1984
- 1984-03-26 US US06/593,155 patent/US4616231A/en not_active Expired - Lifetime
-
1985
- 1985-02-15 EP EP85901231A patent/EP0174948A1/en not_active Withdrawn
- 1985-02-15 WO PCT/US1985/000248 patent/WO1985004508A1/en not_active Ceased
- 1985-02-26 GR GR850479A patent/GR850479B/el unknown
- 1985-03-22 IT IT8547855A patent/IT1209944B/it active
- 1985-03-25 CA CA000477356A patent/CA1227837A/en not_active Expired
- 1985-03-25 ES ES541537A patent/ES8703065A1/es not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| IT8547855A0 (it) | 1985-03-22 |
| IT1209944B (it) | 1989-08-30 |
| ES8703065A1 (es) | 1987-01-16 |
| GR850479B (2) | 1985-07-17 |
| EP0174948A1 (en) | 1986-03-26 |
| ES541537A0 (es) | 1987-01-16 |
| WO1985004508A1 (en) | 1985-10-10 |
| US4616231A (en) | 1986-10-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |