By Topic

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control

Issue 12 • Date Dec. 2003

Filter Results

Displaying Results 1 - 25 of 29
  • Draft 16 of a working document for a proposed standard to be entitled: IEEE standard definitions of terms associated with ferroelectric and related materials

    Publication Year: 2003, Page(s):1613 - 1646
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1442 KB) | HTML iconHTML

    Prior to acceptance of a standard by IEEE, it is important that the document be widely reviewed by experts in the field. This draft version of the standard is being published here to solicit that input. Readers are encouraged to submit any suggestions or corrections to the IEEE ferroelectrics standards committee for inclusion in the final version. Comments can be directed to S. Trolier-Mckinstry. ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • An american national standard IEEE standard definitions of terms associated with ferroelectric and related materials

    Publication Year: 2003, Page(s):1 - 32
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2396 KB) | HTML iconHTML

    First Page of the Article
    View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Analysis of aging of piezoelectric crystal resonators

    Publication Year: 2003, Page(s):1647 - 1655
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (727 KB) | HTML iconHTML

    Aging of piezoelectric (quartz crystal) resonator has been identified as one of the most important quality control problems of quartz crystal products. Aging is defined as frequency change with time. Aging in quartz resonators can be due to several sources: mass transfer due to contamination inside the resonator enclosure, stress-strain in the resonator blank, quartz defect, etc. In this study, th... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A parametric quartz crystal oscillator

    Publication Year: 2003, Page(s):1656 - 1661
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (428 KB) | HTML iconHTML

    Parametric oscillators have been well studied but currently are not used often. Nevertheless, they could be a low-phase noise solution, at least outside the frequency bandwidth of the resonant circuit. The theoretical aspect of parametric oscillations is briefly reviewed in this paper. Indeed, the basic theory of a simple resistance-inductor-capacitor (RLC) circuit working in parametric conditions... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Cryogenic monolithic sapphire-rutile temperature compensated resonator oscillator

    Publication Year: 2003, Page(s):1662 - 1666
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (369 KB) | HTML iconHTML

    We have tested a new temperature-compensated sapphire resonator as frequency determining element for high-stability microwave oscillator. Temperature compensation has been obtained by coating the sapphire resonator with a thin rutile film. A 2-/spl mu/m rutile thickness is sufficient to reach turnover temperature higher than 40 K, and a 2/spl times/10/sup -12/ short-term frequency stability has be... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Analysis of a disk-type piezoelectric ultrasonic motor using impedance matrices

    Publication Year: 2003, Page(s):1667 - 1677
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (999 KB) | HTML iconHTML

    The dynamic behavior and the performance characteristics of the disk-type traveling wave piezoelectric ultrasonic motors (USM) are analyzed using impedance matrices. The stator is divided into three coupled subsystems: an inner metal disk, a piezoelectric annular actuator with segmented electrodes, and an outer metal disk with teeth. The effects of both shear deformation and rotary inertia are tak... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Force-frequency effect of Y-cut langanite and Y-cut langatate

    Publication Year: 2003, Page(s):1678 - 1682
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (351 KB) | HTML iconHTML

    Most recently, langasite and its isomorphs (LGX) have been advanced as potential substitutes for quartz, owing to their extremely high-quality (Q) factors. At least twice higher Q value of LGX than that of quartz has been reported. High Q translates into potentially greater stability. In order to make such materials practical, the environmental sensitivities must be addressed. One of such sensitiv... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Amplitude-frequency effect of Y-cut langanite and langatate

    Publication Year: 2003, Page(s):1683 - 1688
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (485 KB) | HTML iconHTML

    Amplitude-frequency effect of a Y-cut langanite (LGN) resonator and a Y-cut langatate (LGT) resonator were measured. The frequency shifts from the baseline frequency with 1 mA were measured as a function of drive currents up to 28 mA. High-drive current shifted the frequency, but it also heated the crystal locally, causing temperature-related frequency changes. The local heat transfer and its infl... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Forward planar projection through layered media

    Publication Year: 2003, Page(s):1689 - 1698
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1580 KB) | HTML iconHTML

    A planar forward projection algorithm is combined with ray theory to describe longitudinal propagation through an arbitrary number of randomly oriented isotropic layers. This method first measures the space-time pressure field in a plane, then uses wavevector frequency-domain methods to project the field through layered media and to an arbitrary new plane, not necessarily parallel to the initial p... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Volume scattering of distributed microbubbles and its influence on blood flow estimation

    Publication Year: 2003, Page(s):1699 - 1710
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (558 KB) | HTML iconHTML

    In recent years, microbubble contrast agents have become a potential adjunct in Doppler ultrasound diagnosis. In this paper, we show that volume scattering makes the effective band in Doppler spectrum shift downward after injection of microbubbles. Because the insonified volume comprises a collection of distributed microbubbles, the statistical properties such as the autocorrelation function and e... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Ultrasonic techniques for imaging and measurements in molten aluminum

    Publication Year: 2003, Page(s):1711 - 1721
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1190 KB) | HTML iconHTML

    In order to achieve net shape forming, processing of aluminum (Al) in the molten state is often necessary. However, few sensors and techniques have been reported in the literature due to difficulties associated with molten Al, such as high temperature, corrosiveness, and opaqueness. In this paper, development of ultrasonic techniques for imaging and measurements in molten Al using buffer rods oper... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • IGBT-based kilovoltage pulsers for ultrasound measurement applications

    Publication Year: 2003, Page(s):1722 - 1728
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (334 KB) | HTML iconHTML

    Two high-voltage pulser designs are presented that offer advantages in some ultrasound measurement applications, such as driving thick ultrasonic source transducers used for broadband measurements of attenuation or hydrophone frequency response and directivity. The pulsers use integrated gate bipolar transistors (IGBTs) as the switching devices, and in one design an output voltage pulse is produce... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A P-matrix-based model for the analysis of SAW transversely coupled resonator filters, including guided modes and a continuum of radiated waves

    Publication Year: 2003, Page(s):1729 - 1741
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (956 KB) | HTML iconHTML

    When designing transversely coupled resonator filters, unexpected spurii are often observed on the high-frequency side of the transfer function. These spurii cannot be described using only the classical waveguide model. Discrete transverse modes inside the grating can be identified if one assumes that the modes have exponential decay outside the grating; however, a continuum of solutions exist in ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Invariants of electromechanical coupling coefficients in piezoceramics

    Publication Year: 2003, Page(s):1742 - 1751
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (339 KB) | HTML iconHTML

    The relationships between coefficients of electromechanical coupling (CEMC) of various types of piezoceramic resonator (PR) vibrations are considered. Being constant for a given piezoceramic state, the range of variation of piezoceramics dielectric permittivity from a mechanically "free" condition at relatively low frequencies up to an "overall clamped" condition at high frequencies is determined ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • An approach for reducing adjacent element crosstalk in ultrasound arrays

    Publication Year: 2003, Page(s):1752 - 1761
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (311 KB) | HTML iconHTML

    A method is presented for active cancellation of crosstalk effects in ultrasonic arrays. The approach makes use of the programmable transmitter waveform generators that are now being used with growing prevalence in diagnostic ultrasound systems. The array's transmit mode transfer function is represented by a transfer function matrix. Elements of this matrix are determined by exciting a single, cen... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The energy density and power flow of acoustic waves propagating in piezoelectric materials

    Publication Year: 2003, Page(s):1762 - 1765
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (125 KB) | HTML iconHTML

    It is shown that, for a plane bulk acoustic wave propagating in arbitrary piezoelectric media, the densities of mechanoelectrical and electromechanical energies are always equal in absolute value and have opposite signs. However, in general, the mechanoelectrical and electromechanical power flows of such a wave calculated by the traditional expression for the Poynting vector do not compensate each... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • [Front cover]

    Publication Year: 2003, Page(s): i
    Request permission for commercial reuse | PDF file iconPDF (724 KB) |  Multimedia Media
    Freely Available from IEEE
  • [Inside front cover]

    Publication Year: 2003, Page(s): ii
    Request permission for commercial reuse | PDF file iconPDF (78 KB)
    Freely Available from IEEE
  • [Inside back cover]

    Publication Year: 2003, Page(s): iii
    Request permission for commercial reuse | PDF file iconPDF (31 KB)
    Freely Available from IEEE
  • Table of contents

    Publication Year: 2003, Page(s): iv
    Request permission for commercial reuse | PDF file iconPDF (393 KB)
    Freely Available from IEEE
  • Information for contributors

    Publication Year: 2003, Page(s):1601 - 1605
    Request permission for commercial reuse | PDF file iconPDF (155 KB)
    Freely Available from IEEE
  • A Multimedia Example

    Publication Year: 2003, Page(s): 1606
    Request permission for commercial reuse | PDF file iconPDF (302 KB) |  Multimedia Media
    Freely Available from IEEE
  • Call for Special Issue Papers: "Special 50th Anniversary Issue"

    Publication Year: 2003, Page(s): 1607
    Request permission for commercial reuse | PDF file iconPDF (21 KB)
    Freely Available from IEEE
  • Call for Special Issue Papers: "Special Issue on Ultrasonic Transducers for High Temperature Applications"

    Publication Year: 2003, Page(s): 1608
    Request permission for commercial reuse | PDF file iconPDF (25 KB)
    Freely Available from IEEE
  • Call for Special Issue Papers: "Special Issue on Coded Waveforms in Ultrasonic Imaging"

    Publication Year: 2003, Page(s): 1609
    Request permission for commercial reuse | PDF file iconPDF (21 KB)
    Freely Available from IEEE

Aims & Scope

IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control focuses on the theory, design, and application on generation, transmission, and detection of bulk and surface mechanical waves.

Full Aims & Scope

Meet Our Editors

Editor-in-Chief
Steven Freear
s.freear@leeds.ac.uk