By Topic

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control

Issue 5 • Date May 2006

Filter Results

Displaying Results 1 - 25 of 31
  • IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, May 2006, Vol. 53, No. 5

    Publication Year: 2006, Page(s):0_1 - 0_2
    Request permission for commercial reuse | PDF file iconPDF (474 KB) |  Multimedia Media
    Freely Available from IEEE
  • Table of Contents

    Publication Year: 2006, Page(s):3 - 4
    Request permission for commercial reuse | PDF file iconPDF (140 KB)
    Freely Available from IEEE
  • IEEE Ultrasonics, Ferroelectrics, and Frequency Control Society

    Publication Year: 2006, Page(s): 0_5
    Request permission for commercial reuse | PDF file iconPDF (95 KB)
    Freely Available from IEEE
  • Elected administrative committee

    Publication Year: 2006, Page(s): 0_6
    Request permission for commercial reuse | PDF file iconPDF (42 KB)
    Freely Available from IEEE
  • Information for contributors with multimedia addition

    Publication Year: 2006, Page(s):817 - 821
    Request permission for commercial reuse | PDF file iconPDF (168 KB)
    Freely Available from IEEE
  • A multimedia example

    Publication Year: 2006, Page(s): 822
    Request permission for commercial reuse | PDF file iconPDF (352 KB) |  Multimedia Media
    Freely Available from IEEE
  • Call for papers

    Publication Year: 2006, Page(s): 823
    Request permission for commercial reuse | PDF file iconPDF (37 KB)
    Freely Available from IEEE
  • 2006 IEEE International Ultrasonics Symposium - First Call for Papers

    Publication Year: 2006, Page(s): 824
    Request permission for commercial reuse | PDF file iconPDF (114 KB)
    Freely Available from IEEE
  • The influence of electrode designs on the resonant vibrations for square piezoceramic plates

    Publication Year: 2006, Page(s):825 - 837
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4011 KB) | HTML iconHTML

    In this paper, the resonant vibrations of square piezoceramic plates with four different electrode designs are investigated. Two experimental techniques, the amplitude-fluctuation electronic speckle pattern interferometry (AF-ESPI) and the impedance analysis, are used to access the influence of the electrode arrangement on the resonant characteristics of square piezoceramic plates. Both the out-of... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Manufacturing of prestressed piezoelectric unimorphs using a postfired biasing layer

    Publication Year: 2006, Page(s):838 - 846
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (648 KB) | HTML iconHTML

    A novel manufacturing method for prestressed piezoelectric unimorphs is introduced and the actuator properties are examined. Prestressed PZT 5A and PZT 5H unimorphs with piezo material thickness of 250 /spl mu/m and 375 /spl mu/m were manufactured by using sintering and thermal shrinkage of the prestressing material. The process was carried out by screen printing a layer of AgPd paste on one side ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Design and fabrication of a mode rectangular X-cut quartz resonator with zero temperature coefficient

    Publication Year: 2006, Page(s):847 - 852
    Cited by:  Papers (2)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (795 KB) | HTML iconHTML

    Rectangular X-cut quartz crystal resonators with cut angles thetas > 5.0deg and aspect ratios Rzy (= width 2z0/length 2y0) from 0.3 to 0.5 are investigated. The resonators oscillate mode is a length-extensional mode. A semiempirical frequency equation was derived from the stress expressed in terms of the trigonometric and the hyperbolic transcendental functions ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Nonlinear effects in varactor-tuned resonators

    Publication Year: 2006, Page(s):853 - 861
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (951 KB) | HTML iconHTML

    This paper describes the effects of RF power level on the performance of varactor-tuned resonator circuits. A variety of topologies are considered, including series and parallel resonators operating in both unbalanced and balanced modes. As these resonators were designed to produce oscillators with minimum phase noise, the initial small signal insertion loss was set to 6 dB and, hence, Q... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • An unbiased FIR filter for TIE model of a local clock in applications to GPS-based timekeeping

    Publication Year: 2006, Page(s):862 - 870
    Cited by:  Papers (50)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (585 KB) | HTML iconHTML

    An unbiased finite impulse response (FIR) filter is proposed to estimate the time-interval error (TIE) K-degree polynomial model of a local clock in Global Positioning System (GPS)-based timekeeping in the presence of noise that is not obligatory Gaussian. Generic coefficients for the unbiased FIRs are derived. The low-degree FIRs and noise power gains are given. An estimation algorithm is propose... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Design of an infrared monochromatic system with an AOTF as the dispersion element

    Publication Year: 2006, Page(s):871 - 875
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (380 KB) | HTML iconHTML

    In this paper, a method on how to design an infrared monochromatic system based on an acousto-optic tunable filter (AOTF) is introduced. Some key problems about optical system (including collimation of incident light beam and working distance - the shortest distance to separate the zero order light and the diffracted light) are re-searched and solved. The driving circuit for an AOTF based on direc... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Error bars for three-cornered hats

    Publication Year: 2006, Page(s):876 - 879
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (318 KB) | HTML iconHTML

    The three-cornered hat is a procedure for extracting the stabilities of three clocks when the only available data is the time or frequency differences between the clocks. To our knowledge, there has been no method of determining a confidence interval for such a stability estimate. In this paper, we present a method for determining the number of degrees of freedom of the estimate, which allows the ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Extended high-frame rate imaging method with limited-diffraction beams

    Publication Year: 2006, Page(s):880 - 899
    Cited by:  Papers (43)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1953 KB) | HTML iconHTML

    Fast three-dimensional (3-D) ultrasound imaging is a technical challenge. Previously, a high-frame rate (HFR) imaging theory was developed in which a pulsed plane wave was used in transmission, and limited-diffraction array beam weightings were applied to received echo signals to produce a spatial Fourier transform of object function for 3-D image reconstruction. In this paper, the theory is exten... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Frequency division transmission imaging and synthetic aperture reconstruction

    Publication Year: 2006, Page(s):900 - 911
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1258 KB)

    In synthetic transmit aperture imaging only a few transducer elements are used in every transmission, which limits the signal-to-noise ratio (SNR). The penetration depth can be increased by using all transmitters in every transmission. In this paper, a method for exciting all transmitters in every transmission and separating them at the receiver is proposed. The coding is done by designing narrow-... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 2-D array for 3-D ultrasound imaging using synthetic aperture techniques

    Publication Year: 2006, Page(s):912 - 924
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4322 KB)

    A two-dimensional (2-D) array of 256 times 256 = 65,536 elements, with total area 4 times 4 = 16 cm2, serves as a flexible platform for developing acquisition schemes for 3-D rectilinear ultrasound imaging at 10 MHz using synthetic aperture techniques. This innovative system combines a simplified interconnect scheme and synthetic aperture techniques with a 2-D array for 3-D imaging. A r... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • In-vivo imaging of skin under stress: potential of high-frequency (20 MHz) static 2-D elastography

    Publication Year: 2006, Page(s):925 - 935
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (10106 KB) | HTML iconHTML Multimedia Media

    The aim of this study was to evaluate the potential of high-frequency static two-dimensional (2-D) elastography for in vivo exploration of the mechanical behavior of skin. Our device was based on the combination of a 20 MHz sonographer and a patented extensiometer device able to apply calibrated uniaxial stretching of the skin. We used a new algorithm to compute elastograms that improve elastograp... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Increasing frame rate in ultrasound imaging by temporal morphing using tissue Doppler

    Publication Year: 2006, Page(s):936 - 946
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1381 KB) | HTML iconHTML Multimedia Media

    The diagnostic value of echocardiographic images seems to diminish when the frame rate is low. In this work, morphing based on velocity information was used to improve the perceived smoothness of B-mode cine-loops with low frame rate. Based on an estimate of the velocity field calculated from B-mode speckle tracking and tissue Doppler measurements, morphed cine-loops with arbitrarily high frame ra... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Vector-velocity estimation in swept-scan using a K-space approach

    Publication Year: 2006, Page(s):947 - 958
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1169 KB) | HTML iconHTML

    The swept-scan technique (i.e., continuously moving a single-crystal transducer during pulse-echo data acquisition) is used in high-frequency, ultrasonic flow imaging. Relative to the conventional step-scan technique, swept scanning improves the rate of data acquisition and enables near-real-time, high-frequency color flow mapping. However, the continuous transducer movement may have nonnegligible... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Investigation of transverse oscillation method

    Publication Year: 2006, Page(s):959 - 971
    Cited by:  Papers (25)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1777 KB) | HTML iconHTML

    Conventional ultrasound scanners can display only the axial component of the blood velocity vector, which is a significant limitation when vessels nearly parallel to the skin surface are scanned. The transverse oscillation (TO) method overcomes this limitation by introducing a TO and an axial oscillation in the pulse echo field. The theory behind the creation of the double oscillation pulse echo f... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Phase-coupled two-dimensional speckle tracking algorithm

    Publication Year: 2006, Page(s):972 - 990
    Cited by:  Papers (22)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (928 KB) | HTML iconHTML

    A new two-dimensional (2-D) speckle tracking method for displacement estimation based on the gradients of the magnitude and phase of 2-D complex correlation in a search region is presented. The novelty of this approach is that it couples the phase and magnitude gradients near the correlation peak to determine its coordinates with subsample accuracy in both axial and lateral directions. This is ach... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Ultrasonic edge shadowing around cylindrical cavities with and without walls

    Publication Year: 2006, Page(s):991 - 1000
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (863 KB) | HTML iconHTML

    In B-mode ultrasound images, the speckle distal to the edges of cavities of contrasting speed of sound (SOS) can be imprinted with a pattern characteristic of the cavity. This pattern, termed edge shadowing, is likely to involve alteration of both the speckle amplitude and its correlation length. Using the acoustic field calculated from the exact solution to the wave equation, we have simulated th... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Beam-supported AlN thin film bulk acoustic resonators

    Publication Year: 2006, Page(s):1001 - 1007
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (947 KB) | HTML iconHTML

    A novel, suspended thin film bulk acoustic wave resonator (SFBAR) has been fabricated from an aluminum nitride film sputtered directly on a (100) silicon substrate. The suspended membrane design uses thin beams to support, as well as electrically connect, the resonator and has been fabricated using both thin film processing and bulk silicon micromachining. The quality factor and the effective elec... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.

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