IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control

May 1998 Volumne 45, Number 1

CONTENTS

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LETTERS
PAPERS
CORRESPONDENCE

LETTERS

Differential Phase Shift Keying Direct Sequence Spread Spectrum Single SAW Based Correlator Receiver
F. Moeller, M. Belkerdid, D. C. Malocha, and W. Buff . . .537

Time Transfer Using the Phase of the GPS Carrier
K. Larson and J. Levine . . .539

PAPERS

The Application of K-Space in Pulse Echo Ultrasound
(Invited Paper)
W. F. Walker and G. E. Trahey . . .541

Characterizing Ultrasonic Transducers Using Radiation Efficiency and Reception Noise Figure
(Invited Paper)
T. L. Rhyne . . .559

Precise Modeling of Complex SAW Structures Using a Perturbation Method Hybridized with a Finite Element Analysis
S. Ballandras and E. Bigler . . .567

Angle-Insensitive Flow Measurement Using Doppler Bandwidth
K.-W. W. Yeung . . .574

Velocity Dispersion of Acoustic Waves in Cancellous Bone
P. Droin, G. Berger, and P. Laugier . . .581

Adaptive Ultrasonic Measurement of Blood Vessel Diameter and Wall Thickness: Theory and Experimental Results
K. Rafii and J. S. Jaffe . . .593

Extended Investigation on High Velocity Pseudo Surface Waves
M. P. da Cunha . . .604

Frequency Invariant Classification of Ultrasonic Weld Inspection Signals
R. Polikar, L. Udpa, S. S. Udpa, and T. Taylor . . .614

Noncontact Measurement of Vibration Using Airborne Ultrasound
O. Bou Matar, J. P. Remenieras, C. Bruneel, A. Roncin, and F. Patat . . .626

A SAW-Based Commutation Signaling Modem for Broadband Indoor Wireless Communication
G. Kipens, H. Leib, J. Saw, J. Nisbet, and J.-D. Dai . . .634

Time-Varying Autoregressive Spectral Estimation for Ultrasound Attenuation in Tissue Characterization
J.-M. Girault, F. Ossant, A. Ouahabi, D. Kouamé, and F. Patat . . .650

SAW Device Modeling Including Velocity Dispersion Based on ZnO/Diamond/Si Layered Structures
A. Hachigo and D. C. Malocha . . .660

Unidimensional Modeling of Multi-Layered Piezoelectric Transducer Structures
D. J. Powell, G. Hayward, and R. Y. Ting . . .667

Surface Micromachined Capacitive Ultrasonic Transducers
I. Ladabaum, X. Jin, H. T. Soh, A. Atalar, and B. T. Khuri-Yakub . . .678

Efficient Parallel Adaptive Aberration Correction
S. Krishnan, K. W. Rigby, and M. O'Donnell . . .691

Suppression of Propagating Second Harmonic in Ultrasound Contrast Imaging
S. Krishnan, J. D. Hamilton, and M. O'Donnell . . .704

Bessel and Conical Beams and Approximation with Annular Arrays
S. Holm . . .712

High Frequency Ultrasound Imaging Using an Active Optical Detector
J. D. Hamilton, C. J. Brooks, G. L. Vossler, and M. O'Donnell . . .719

Frequency Shifts in Cesium Beam Clocks Induced by Microwave Leakages
B. Boussert, G. Théobald, P. Cérez, and E. de Clercq . . .728

An In Vivo Ultrasonic Model of Liver Parenchyma
H. J. Huisman and J. M. Thijssen . . .739

On the Noninvasive Determination of Material Parameters from a Knowledge of Elastic Displacements: Theory and Numerical Simulation
A. J. Romano, J. J. Shirron, and J. A. Bucaro . . .751

Transient Surface Velocity Measurements in a Liquid by an Active Ultrasonic Probe
O. Casula and D. Royer . . .760

Spectral Integral Formulae for the Response of Acoustic Transducers in Cylindrically Curved Configurations
S. Zeroug . . .768

Unsupervised Segmentation of RF Echo into Regions with Different Scattering Characteristics
G. Georgiou and F. S. Cohen . . .779

Comparison Between the Effects of Cavitation Induced by Two Different Pressure-Time Shock Waveform Pulses
D. Cathignol, J. Tavakkoli, A. Birer, and A. Arefiev . . .788

Coupled Mode Theory for Nonlinear Piezoelectric Plate Vibrations
X. Li, W. Jiang, and Y. Shui . . .800

Ultrasonic Waveguide Applicator Arrays for Interstitial Heating: A Model Study
B. J. Jarosz and D. Kaytar . . .806

Using FEA to Treat Piezoelectric Low-frequency Resonators
J. Söderkvist . . .815

Microwave Oscillators Incorporating High Performance Distributed Bragg Reflector Microwave Resonators
C. A. Flory and H. L. Ko . . .824

High-Q Sapphire-Rutile Frequency-Temperature Compensated Microwave Dielectric Resonators
M. E. Tobar, J. Krupka, J. G. Hartnett, E. N. Ivanov, and R. A. Woode . . .830

A New Method for Estimation of Velocity Vectors
J. A. Jensen and P. Munk . . .837

Multi-Dimensional Velocity Estimation with Ultrasound Using Spatial Quadrature
M. E. Anderson . . .852

CORRESPONDENCE

Analysis of the Passband Ripples in Surface Acoustic Wave IIDT Filters
W. Liu and P. M. Smith . . .862

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