DE2949930A1 - Elektro-akustischer wandler fuer akustische abbildungseinrichtungen - Google Patents
Elektro-akustischer wandler fuer akustische abbildungseinrichtungenInfo
- Publication number
- DE2949930A1 DE2949930A1 DE19792949930 DE2949930A DE2949930A1 DE 2949930 A1 DE2949930 A1 DE 2949930A1 DE 19792949930 DE19792949930 DE 19792949930 DE 2949930 A DE2949930 A DE 2949930A DE 2949930 A1 DE2949930 A1 DE 2949930A1
- Authority
- DE
- Germany
- Prior art keywords
- acoustic
- mass
- oscillation
- layer
- elements
- 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.)
- Ceased
Links
- 238000003384 imaging method Methods 0.000 title claims description 9
- 230000010355 oscillation Effects 0.000 claims description 27
- 239000000463 material Substances 0.000 claims description 6
- 239000002305 electric material Substances 0.000 claims description 4
- 239000004020 conductor Substances 0.000 claims 3
- 230000000694 effects Effects 0.000 description 5
- 229910052451 lead zirconate titanate Inorganic materials 0.000 description 5
- 230000005284 excitation Effects 0.000 description 4
- 230000008033 biological extinction Effects 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000006098 acoustic absorber Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000002592 echocardiography Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- HFGPZNIAWCZYJU-UHFFFAOYSA-N lead zirconate titanate Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ti+4].[Zr+4].[Pb+2] HFGPZNIAWCZYJU-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- G10K11/002—Devices for damping, suppressing, obstructing or conducting sound in acoustic devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
- B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
- B06B1/0607—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using multiple elements
- B06B1/0622—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using multiple elements on one surface
- B06B1/064—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using multiple elements on one surface with multiple active layers
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Mechanical Engineering (AREA)
- Transducers For Ultrasonic Waves (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/020,007 US4240003A (en) | 1979-03-12 | 1979-03-12 | Apparatus and method for suppressing mass/spring mode in acoustic imaging transducers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2949930A1 true DE2949930A1 (de) | 1980-09-25 |
Family
ID=21796250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19792949930 Ceased DE2949930A1 (de) | 1979-03-12 | 1979-12-12 | Elektro-akustischer wandler fuer akustische abbildungseinrichtungen |
Country Status (5)
Families Citing this family (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4347593A (en) * | 1979-12-07 | 1982-08-31 | The United States Of America As Represented By The Secretary Of The Navy | Piezoceramic tubular element with zero end displacement |
| US4382201A (en) * | 1981-04-27 | 1983-05-03 | General Electric Company | Ultrasonic transducer and process to obtain high acoustic attenuation in the backing |
| US4414482A (en) * | 1981-05-20 | 1983-11-08 | Siemens Gammasonics, Inc. | Non-resonant ultrasonic transducer array for a phased array imaging system using1/4 λ piezo elements |
| US4479069A (en) * | 1981-11-12 | 1984-10-23 | Hewlett-Packard Company | Lead attachment for an acoustic transducer |
| US4446395A (en) * | 1981-12-30 | 1984-05-01 | Technicare Corporation | Short ring down, ultrasonic transducer suitable for medical applications |
| EP0128049B1 (en) * | 1983-06-07 | 1990-09-12 | Matsushita Electric Industrial Co., Ltd. | Ultrasonic probe having a backing member |
| US4633119A (en) * | 1984-07-02 | 1986-12-30 | Gould Inc. | Broadband multi-resonant longitudinal vibrator transducer |
| US4565940A (en) * | 1984-08-14 | 1986-01-21 | Massachusetts Institute Of Technology | Method and apparatus using a piezoelectric film for active control of vibrations |
| JPS6412711A (en) * | 1987-07-07 | 1989-01-17 | Murata Manufacturing Co | Chip type resonator |
| FR2634089B1 (fr) * | 1988-07-08 | 1990-10-05 | Labo Electronique Physique | Transducteur ultrasonore a sensibilite amelioree |
| US5060653A (en) * | 1989-05-16 | 1991-10-29 | Hewlett-Packard Company | Ultrasonic sensor with starved dilatational modes |
| JP3015481B2 (ja) * | 1990-03-28 | 2000-03-06 | 株式会社東芝 | 超音波プローブ・システム |
| US5267221A (en) * | 1992-02-13 | 1993-11-30 | Hewlett-Packard Company | Backing for acoustic transducer array |
| US5410205A (en) * | 1993-02-11 | 1995-04-25 | Hewlett-Packard Company | Ultrasonic transducer having two or more resonance frequencies |
| US5381067A (en) * | 1993-03-10 | 1995-01-10 | Hewlett-Packard Company | Electrical impedance normalization for an ultrasonic transducer array |
| US5625149A (en) * | 1994-07-27 | 1997-04-29 | Hewlett-Packard Company | Ultrasonic transductor |
| US5598051A (en) * | 1994-11-21 | 1997-01-28 | General Electric Company | Bilayer ultrasonic transducer having reduced total electrical impedance |
| US5686777A (en) * | 1995-09-21 | 1997-11-11 | New Jersey Institute Of Technology | High accuracy piezoelectric positioning device |
| US5957851A (en) * | 1996-06-10 | 1999-09-28 | Acuson Corporation | Extended bandwidth ultrasonic transducer |
| US6416478B1 (en) | 1998-05-05 | 2002-07-09 | Acuson Corporation | Extended bandwidth ultrasonic transducer and method |
| US6437484B1 (en) * | 1998-12-24 | 2002-08-20 | Kyocera Corporation | Piezoelectric resonator |
| US6409667B1 (en) | 2000-02-23 | 2002-06-25 | Acuson Corporation | Medical diagnostic ultrasound transducer system and method for harmonic imaging |
| GB2425179A (en) * | 2005-04-14 | 2006-10-18 | Warwickshire Mfg Group | Assessing the quality of rivets by evaluating the complex valued electrical impedance of a piezoelectric ultrasonic transducer |
| US8467169B2 (en) | 2007-03-22 | 2013-06-18 | Research In Motion Rf, Inc. | Capacitors adapted for acoustic resonance cancellation |
| US7936553B2 (en) * | 2007-03-22 | 2011-05-03 | Paratek Microwave, Inc. | Capacitors adapted for acoustic resonance cancellation |
| US7869187B2 (en) * | 2007-09-04 | 2011-01-11 | Paratek Microwave, Inc. | Acoustic bandgap structures adapted to suppress parasitic resonances in tunable ferroelectric capacitors and method of operation and fabrication therefore |
| US8194387B2 (en) | 2009-03-20 | 2012-06-05 | Paratek Microwave, Inc. | Electrostrictive resonance suppression for tunable capacitors |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3365590A (en) * | 1968-01-23 | Hewlett Packard Co | Piezoelectric transducer | |
| DE879929C (de) * | 1951-05-16 | 1953-06-18 | Siemens Ag | Piezoelektrischer Schwinger |
| US2875354A (en) * | 1954-01-29 | 1959-02-24 | Branson Instr | Piezoelectric transducer |
| US3036231A (en) * | 1958-07-24 | 1962-05-22 | Sperry Prod Inc | High resolution piezoelectric transducer |
| US3058015A (en) * | 1960-05-03 | 1962-10-09 | Nesh Florence | Dissipation of high frequency vibratory energy |
| US3714475A (en) * | 1966-07-15 | 1973-01-30 | H Eng Corp | Resonator having counter rotating rigid parts |
| US3543058A (en) * | 1969-11-10 | 1970-11-24 | Westinghouse Electric Corp | Piezoelectric transducer |
| US4122725A (en) * | 1976-06-16 | 1978-10-31 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Length mode piezoelectric ultrasonic transducer for inspection of solid objects |
| JPS5353393A (en) * | 1976-10-25 | 1978-05-15 | Matsushita Electric Ind Co Ltd | Ultrasonic probe |
| US4158787A (en) * | 1978-05-08 | 1979-06-19 | Hughes Aircraft Company | Electromechanical transducer-coupled mechanical structure with negative capacitance compensation circuit |
-
1979
- 1979-03-12 US US06/020,007 patent/US4240003A/en not_active Expired - Lifetime
- 1979-11-12 GB GB7939073A patent/GB2044582B/en not_active Expired
- 1979-12-12 DE DE19792949930 patent/DE2949930A1/de not_active Ceased
- 1979-12-21 FR FR7931441A patent/FR2451692A1/fr not_active Withdrawn
-
1980
- 1980-03-12 JP JP3148880A patent/JPS55123299A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| GB2044582A (en) | 1980-10-15 |
| FR2451692A1 (fr) | 1980-10-10 |
| JPH0128560B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1989-06-02 |
| GB2044582B (en) | 1983-05-05 |
| US4240003A (en) | 1980-12-16 |
| JPS55123299A (en) | 1980-09-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8110 | Request for examination paragraph 44 | ||
| 8128 | New person/name/address of the agent |
Representative=s name: SCHULTE, K., DIPL.-ING., PAT.-ASS., 7030 BOEBLINGE |
|
| 8131 | Rejection |