Dispositif integre couplant une ligne a retard a ondes acoustiques de surface a un reseau multiplexe de transistors a effet de champ. Applications possibles comme memoire tampon analogique, filtre transversal large bande numeriquement programmable, correlateur
{"title":"The SAW-FET Signal Processor","authors":"J.B. Green, G. Kino","doi":"10.1109/T-SU.1985.31658","DOIUrl":"https://doi.org/10.1109/T-SU.1985.31658","url":null,"abstract":"Dispositif integre couplant une ligne a retard a ondes acoustiques de surface a un reseau multiplexe de transistors a effet de champ. Applications possibles comme memoire tampon analogique, filtre transversal large bande numeriquement programmable, correlateur","PeriodicalId":371797,"journal":{"name":"IEEE Transactions on Sonics and Ultrasonics","volume":"2015 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1985-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121321895","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Qian Zenxing, Zhang Xiaozhong, Zhao Mingzhou, Wu Xizhang, Lin Yujin
Abstmct-A modified ZnO film model to calculate the elastic and pi- ezoelectric constants and the SAW velocities of ZnO film (c-axis ori- ented) substrate layer structure is proposed. The influences of the ran- dom orientation and lattice distortion have been taken into account. Compared to the traditional single crystal model, the theoretical results of the modified model fit better with the experimental values of a laser- probe measuring system. minor effect on the SAW properties of the ZnO substrate layer structure when it is not larger than 3 O. In the present case the mean is less than l"; therefore, for simplicity it is assumed to be zero, and only the effect of U (o is equal to 3" from the X-ray diffraction pattern) is taken into ac- count. In our model, the ZnO film is treated as a collec- tion of many monocrystal columns. The orientation 7 of the c-axis of each crystal column has the value within ( -T/ 2, 7r/2) on both the y-z and x-z planes. The material pa- rameters of the monocrystal column with the c-axis ori- entation of 17 can be calculated by assuming that 17 follows the normal distribution Since all the monocrystal columns with c-axis orientations contribute to the material parameters, their mathematical expectation can be taken as the material parameters of ZnO film. The average can be obtained by integrating with respect to 7 twice, first in the x-z plane and then in the y- z plane. Since 7 is a two-dimensional variable, the first integration process in the x-y plane can be stated as fol- lows :
{"title":"A Modified ZnO Film Model for Calculating Elastic and Piezoelectric Properties","authors":"Qian Zenxing, Zhang Xiaozhong, Zhao Mingzhou, Wu Xizhang, Lin Yujin","doi":"10.1109/T-SU.1985.31646","DOIUrl":"https://doi.org/10.1109/T-SU.1985.31646","url":null,"abstract":"Abstmct-A modified ZnO film model to calculate the elastic and pi- ezoelectric constants and the SAW velocities of ZnO film (c-axis ori- ented) substrate layer structure is proposed. The influences of the ran- dom orientation and lattice distortion have been taken into account. Compared to the traditional single crystal model, the theoretical results of the modified model fit better with the experimental values of a laser- probe measuring system. minor effect on the SAW properties of the ZnO substrate layer structure when it is not larger than 3 O. In the present case the mean is less than l\"; therefore, for simplicity it is assumed to be zero, and only the effect of U (o is equal to 3\" from the X-ray diffraction pattern) is taken into ac- count. In our model, the ZnO film is treated as a collec- tion of many monocrystal columns. The orientation 7 of the c-axis of each crystal column has the value within ( -T/ 2, 7r/2) on both the y-z and x-z planes. The material pa- rameters of the monocrystal column with the c-axis ori- entation of 17 can be calculated by assuming that 17 follows the normal distribution Since all the monocrystal columns with c-axis orientations contribute to the material parameters, their mathematical expectation can be taken as the material parameters of ZnO film. The average can be obtained by integrating with respect to 7 twice, first in the x-z plane and then in the y- z plane. Since 7 is a two-dimensional variable, the first integration process in the x-y plane can be stated as fol- lows :","PeriodicalId":371797,"journal":{"name":"IEEE Transactions on Sonics and Ultrasonics","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1985-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114674931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This paper presents a new synthetic-aperture focusing method for ultrasonic E-scan imaging. The method involves the two- dimensional Fourier transform and is named Fourier domain recon- struction (FDR). The performance of FDR as well as the basis for the availability of the image is derived theoretically in some detail. Conven- tional synthetic-aperture focusing is referred to as delay and sum (D&S). The computational complexity of FDR is of the order of OW2 log N) as compared to O(N3) for delay and sum in reconstructing N X N pixels. In experiments, good images of several objects have been re- constructed by FDR.
{"title":"A New Synthetic-Aperture Focusing Method for Ultrasonic B-Scan Imaging by the Fourier Transform","authors":"K. Nagai","doi":"10.1109/T-SU.1985.31627","DOIUrl":"https://doi.org/10.1109/T-SU.1985.31627","url":null,"abstract":"This paper presents a new synthetic-aperture focusing method for ultrasonic E-scan imaging. The method involves the two- dimensional Fourier transform and is named Fourier domain recon- struction (FDR). The performance of FDR as well as the basis for the availability of the image is derived theoretically in some detail. Conven- tional synthetic-aperture focusing is referred to as delay and sum (D&S). The computational complexity of FDR is of the order of OW2 log N) as compared to O(N3) for delay and sum in reconstructing N X N pixels. In experiments, good images of several objects have been re- constructed by FDR.","PeriodicalId":371797,"journal":{"name":"IEEE Transactions on Sonics and Ultrasonics","volume":"96 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1985-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115645265","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Source d'ondes acoustiques etalon produite en utilisant une force electromagnetique. Application a l'etalonnage d'un capteur d'emission acoustique
声波源用电磁力产生的标准声波。声发射传感器校准的应用
{"title":"Electromagnetic Acoustic Wave Source and Measurement and Calculation of Vertical and Horizontal Displacements of Surface Waves","authors":"K. Kawashima","doi":"10.1109/T-SU.1985.31625","DOIUrl":"https://doi.org/10.1109/T-SU.1985.31625","url":null,"abstract":"Source d'ondes acoustiques etalon produite en utilisant une force electromagnetique. Application a l'etalonnage d'un capteur d'emission acoustique","PeriodicalId":371797,"journal":{"name":"IEEE Transactions on Sonics and Ultrasonics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1985-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130679801","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Etude des modes d'epaisseur fondamentaux d'un resonateur a quartz a des frequences entre 2,6 et 4,9 MHz sous l'effet d'un champ electrique
研究频率在2.6 - 4.9 MHz之间的石英谐振器在电场作用下的基本厚度模态
{"title":"The Thickness Modes of a Quartz Plate Resonator in a Lateral DC Field","authors":"C. K. Hruska, M. Kucera","doi":"10.1109/T-SU.1985.31637","DOIUrl":"https://doi.org/10.1109/T-SU.1985.31637","url":null,"abstract":"Etude des modes d'epaisseur fondamentaux d'un resonateur a quartz a des frequences entre 2,6 et 4,9 MHz sous l'effet d'un champ electrique","PeriodicalId":371797,"journal":{"name":"IEEE Transactions on Sonics and Ultrasonics","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1985-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130631529","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Nour-Eddin El Faouzi, J. Saurel, J. Lassale, G. Cambon
Methode basee sur la sensibilite du coefficient en temperature de la ligne a retard a ondes acoustiques de surface confirmant l'hypothese que les coefficients en temperature de couches de SiO 2 pulverisees sont differents de celles du materiau
基于延迟线温度系数对表面声波的敏感性的方法，证实了sio2粉层温度系数与材料温度系数不同的假设
{"title":"Temperature Coefficients of the Elastic Constants of SiO2Layers","authors":"Nour-Eddin El Faouzi, J. Saurel, J. Lassale, G. Cambon","doi":"10.1109/T-SU.1985.31636","DOIUrl":"https://doi.org/10.1109/T-SU.1985.31636","url":null,"abstract":"Methode basee sur la sensibilite du coefficient en temperature de la ligne a retard a ondes acoustiques de surface confirmant l'hypothese que les coefficients en temperature de couches de SiO 2 pulverisees sont differents de celles du materiau","PeriodicalId":371797,"journal":{"name":"IEEE Transactions on Sonics and Ultrasonics","volume":"245 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1985-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114274276","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
T. R. Gururaja, Walter A. Schulze, L. E. Cross, Robert, Newnham, BERTRAMA. Auld, Yuzhong, Wang Abstmcr-Theobjective
Abstmcr-The objective of the present work was to gain a deeper mensions of the transducer are much smaller than the understanding of the behavior of lead zirconate titanate (PZT) polymer composites for applications such as ultrasonic medical diagnosis in the megahertz frequency range. These composites were originally developed for low-frequency hydrophone applications. The PZT rod-polymer composites have been prepared with five to 30 volume percent PZT using 0.28 mm and 0.45 mm rods. In a disc of PZT rod-polymer composite material, there are three principal types of resonance: the planar mode, the thickness mode, and various lateral modes caused by the regular periodicity of the PZT rod in the composite. These resonance modes have been studied with the following techniques: 1) electrical impedance measurement as a function of frequency and 2) laser probe dilatometry of the dynamic displacement as a function of frequency and position in the composite lattice. The observed resonance behavior is found to be a result of lateral interactions in the composite through the epoxy medium. The effect of temperature on the electromechanical properties of the composite has also been investigated. Implications of these results for optimizing the design of ultrasonic transducers are discussed.
{"title":"Piezoelectric Composite Materials for Ultrasonic Transducer Applications. Part I: Resonant Modes of Vibration of PZT Rod-Polymer Composites","authors":"T. R. Gururaja, Walter A. Schulze, L. E. Cross, Robert, Newnham, BERTRAMA. Auld, Yuzhong, Wang Abstmcr-Theobjective","doi":"10.1109/T-SU.1985.31623","DOIUrl":"https://doi.org/10.1109/T-SU.1985.31623","url":null,"abstract":"Abstmcr-The objective of the present work was to gain a deeper mensions of the transducer are much smaller than the understanding of the behavior of lead zirconate titanate (PZT) polymer composites for applications such as ultrasonic medical diagnosis in the megahertz frequency range. These composites were originally developed for low-frequency hydrophone applications. The PZT rod-polymer composites have been prepared with five to 30 volume percent PZT using 0.28 mm and 0.45 mm rods. In a disc of PZT rod-polymer composite material, there are three principal types of resonance: the planar mode, the thickness mode, and various lateral modes caused by the regular periodicity of the PZT rod in the composite. These resonance modes have been studied with the following techniques: 1) electrical impedance measurement as a function of frequency and 2) laser probe dilatometry of the dynamic displacement as a function of frequency and position in the composite lattice. The observed resonance behavior is found to be a result of lateral interactions in the composite through the epoxy medium. The effect of temperature on the electromechanical properties of the composite has also been investigated. Implications of these results for optimizing the design of ultrasonic transducers are discussed.","PeriodicalId":371797,"journal":{"name":"IEEE Transactions on Sonics and Ultrasonics","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1985-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123003854","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
T. R. Gururaja, Walter A. Schulze, L. E. Cross, R. Newnham
Abstmct-The electro-acoustic properties of Lead zirconate titanate (PZT) rod-polymer composites relevant for ultrasonic transducer applications are reported. Acoustic impedance of the composite materials was measured by three different techniques in the frequency range 0.33.5 MHz. Dependence of the acoustic impedance as a function of volume fraction of PZT and frequency was also modeled theoretically. Time-delay spectrometry was employed to calibrate the free-field transmitting and receiving voltage responses of the composite materials. The acoustic impedance of the composite materials was in the range of 3-10 M rayl. The figure of merit in the receiving mode of composite materials was three times that of PZT. The figure of merit for a 20percent PZT composite (2 = 7.3 M rayl) was further enhanced by 50 percent using a single-layer impedance transformer of lucite (2 =3.3 M rayl). These composite materials were molded into curved shapes by simple thermal process to fabricate focused transducers. The axial and lateral beam profiles of focused composite transducers are presented.
摘要:报道了与超声换能器应用相关的锆钛酸铅(PZT)棒聚合物复合材料的电声性能。在0.33.5 MHz的频率范围内，采用三种不同的技术测量了复合材料的声阻抗。对声阻抗随PZT体积分数和频率的变化关系进行了理论建模。采用延时光谱法对复合材料的自由场发射和接收电压响应进行了标定。复合材料的声阻抗范围为3 ~ 10 M。复合材料接收模式的优值是PZT接收模式的3倍。20% PZT复合材料(2 = 7.3 M rayl)的性能值通过使用单层硅树脂阻抗变压器(2 =3.3 M rayl)进一步提高了50%。这些复合材料通过简单的热加工成型成弯曲的形状来制造聚焦换能器。给出了聚焦复合换能器的轴向和横向光束分布。
{"title":"Piezoelectric Composite Materials for Ultrasonic Transducer Applications. Part II: Evaluation of Ultrasonic Medical Applications","authors":"T. R. Gururaja, Walter A. Schulze, L. E. Cross, R. Newnham","doi":"10.1109/T-SU.1985.31624","DOIUrl":"https://doi.org/10.1109/T-SU.1985.31624","url":null,"abstract":"Abstmct-The electro-acoustic properties of Lead zirconate titanate (PZT) rod-polymer composites relevant for ultrasonic transducer applications are reported. Acoustic impedance of the composite materials was measured by three different techniques in the frequency range 0.33.5 MHz. Dependence of the acoustic impedance as a function of volume fraction of PZT and frequency was also modeled theoretically. Time-delay spectrometry was employed to calibrate the free-field transmitting and receiving voltage responses of the composite materials. The acoustic impedance of the composite materials was in the range of 3-10 M rayl. The figure of merit in the receiving mode of composite materials was three times that of PZT. The figure of merit for a 20percent PZT composite (2 = 7.3 M rayl) was further enhanced by 50 percent using a single-layer impedance transformer of lucite (2 =3.3 M rayl). These composite materials were molded into curved shapes by simple thermal process to fabricate focused transducers. The axial and lateral beam profiles of focused composite transducers are presented.","PeriodicalId":371797,"journal":{"name":"IEEE Transactions on Sonics and Ultrasonics","volume":"58 22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1985-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131234693","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstmf-An acoustic interferogram of equal phase wavefronts is produced with the scanning laser acoustic microscope. The interferogram contains information about the ultrasonic velocity distribution of the specimen under investigation. Through appropriate signal processing, the information can be transformed into a one-dimensional velocity map. This has been done quite successfully in the spatial domain, where the specimen is relatively homogeneous. For heterogeneous specimens, the spatial domain technique often fails. A new technique has been developed to reduce the interferograms to a one-dimensional velocity map. This approach operates in the spatial frequency domain and appears to be more reliable for heterogeneous specimens than the spatial domain approach. The theory and implementation of the spatial frequency domain technique (SFDT) are reported, and the two techniques are compared with each other. SFDT utilizes a smaller pixel size than the spatial domain technique. In addition SFDT is faster and more noise tolerant. The extension of the SFDT to produce two-dimensional velocity distribution images is also reported.
{"title":"Spatial Frequency Domain Technique: An Approach for Analyzing the Scanning Laser Acoustic Microscope Interferogram Images","authors":"K. Tervola, W. O’Brien","doi":"10.1109/T-SU.1985.31629","DOIUrl":"https://doi.org/10.1109/T-SU.1985.31629","url":null,"abstract":"Abstmf-An acoustic interferogram of equal phase wavefronts is produced with the scanning laser acoustic microscope. The interferogram contains information about the ultrasonic velocity distribution of the specimen under investigation. Through appropriate signal processing, the information can be transformed into a one-dimensional velocity map. This has been done quite successfully in the spatial domain, where the specimen is relatively homogeneous. For heterogeneous specimens, the spatial domain technique often fails. A new technique has been developed to reduce the interferograms to a one-dimensional velocity map. This approach operates in the spatial frequency domain and appears to be more reliable for heterogeneous specimens than the spatial domain approach. The theory and implementation of the spatial frequency domain technique (SFDT) are reported, and the two techniques are compared with each other. SFDT utilizes a smaller pixel size than the spatial domain technique. In addition SFDT is faster and more noise tolerant. The extension of the SFDT to produce two-dimensional velocity distribution images is also reported.","PeriodicalId":371797,"journal":{"name":"IEEE Transactions on Sonics and Ultrasonics","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1985-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121337145","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstmct-A theoretical and experimental study is reported on the operation of a tunable surface acoustic wave (SAW) oscillator incorporating a differential SAW delay line. Control of the differential delay line is effected with metal-oxide-semiconductor field-effect transistor (MOSFET) circuitry. Circuit details are given for a 70 MHz prototype SAW oscillator circuit, including those on tunability and phase noise performance. With the use of such MOSFET control circuitry, this ing technique should be applicable to ultra-high frequency (UHF) SAW oscillator circuitry.
{"title":"Studies of a Tunable SAW Oscillator Using a Differential SAW Delay Line with MOSFET Control","authors":"R. Amorosi, C. Campbell","doi":"10.1109/T-SU.1985.31633","DOIUrl":"https://doi.org/10.1109/T-SU.1985.31633","url":null,"abstract":"Abstmct-A theoretical and experimental study is reported on the operation of a tunable surface acoustic wave (SAW) oscillator incorporating a differential SAW delay line. Control of the differential delay line is effected with metal-oxide-semiconductor field-effect transistor (MOSFET) circuitry. Circuit details are given for a 70 MHz prototype SAW oscillator circuit, including those on tunability and phase noise performance. With the use of such MOSFET control circuitry, this ing technique should be applicable to ultra-high frequency (UHF) SAW oscillator circuitry.","PeriodicalId":371797,"journal":{"name":"IEEE Transactions on Sonics and Ultrasonics","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1985-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116976824","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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