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Acoustic mixing in a dome-shaped chamber-based SAW (DC-SAW) device
Lab on a Chip, 2020A dome-shaped chamber device enables the maximizing of the effect of SAW transmitted at a Rayleigh angle.
Hyunjung Lim +3 more
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General Green's functions for SAW device analysis
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 1999The traditional Green's function has been widely used to analyze surface acoustic wave (SAW) devices for many years because of its physical basis and its ability to model many propagating modes. Simplifications are, however, introduced in the derivation of the traditional Green's function that cause it to ignore some important effects, such as mass ...
D, Qiao, W, Liu, P M, Smith
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Fine lithography and saw devices
Microelectronic Engineering, 1984Abstract High performance filters in GHz range are required in communication systems. In this paper, the fine electrodes of the order or 0.2 μm width have been fabricated by using electron beam litho-graphy, normal lift-off techniques and O 2 -plasma cleaning system.
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New architectures for feedthrough SAW recursive devices
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2005This paper presents an analysis of a new type of feedthrough recursive surface acoustic wave (SAW) device. The device combines a conventional SAW structure with positive feedback in a way that allows use of selective properties of the SAW structure, control of the central frequency and bandwidth, achieving significantly higher quality factors for given
Alexander N, Kalashnikov +1 more
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SAW devices for communications applications
Canadian Journal of Electrical and Computer Engineering, 1990The market for surface acoustic wave (SAW) devices now exceeds $100 million. The author presents an overview of the different SAW device structures available and summarizes their properties. He then describes a number of applications related to the communications industry, including general bandpass filters, Nyquist filters, clock recovery filters ...
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Diamond‐SAW devices: a reverse fabrication method
physica status solidi c, 2016AbstractSurface acoustic wave (SAW) devices are key components in modern wireless communication systems. Besides being used as reflective delay lines, filters or resonators, SAW devices can be used as sensors and fixed‐code identification tags. Due to their high‐acoustic velo‐city, diamond films can be combined with piezoelectric materials to fabricate
Debarati Mukherjee +8 more
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Optimal orientation function for SAW devices
IEEE International Frequency Control Sympposium and PDA Exhibition Jointly with the 17th European Frequency and Time Forum, 2003. Proceedings of the 2003, 2004The traditional electromechanical coupling coefficient (K/sup 2/) and temperature coefficient of delay (TCD); more recently velocity (v/sub p/), for compact or high frequency devices; and now power flow angle (PFA), diffraction (/spl gamma/), amplitude (|/spl Gamma/|) and phase (/spl ang//spl Gamma/) of a metal strip reflection coefficient are equally ...
J.A. Cowperthwaite, M.P. da Cunha
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SAW devices for communication systems
Proceedings., IEEE Ultrasonics Symposium, 2003The author considers the possibilities of software engineering for the development, modeling, and design of full-custom, high-precision SAW (surface acoustic wave) filters for communication systems, e.g. GHz delay lines for clock recovery in light-wave transmission systems low-loss filters for mobile radios and cordless telephones, spectrum-shaping ...
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SAW devices for spread spectrum applications
Proceedings of ISSSTA'95 International Symposium on Spread Spectrum Techniques and Applications, 2002Surface acoustic wave (SAW) filters are small, rugged, and crystal stable. They can be fabricated with high reproducibility. In the 80s they replaced the LC filters in TV sets and more than one hundred million SAW TV IF filters are fabricated each year. SAW filters play a key role in the rapidly growing market of mobile communication systems.
C.C.W. Ruppel, L. Reindl
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Effect of humidity on SAW devices
1997 IEEE Ultrasonics Symposium Proceedings. An International Symposium (Cat. No.97CH36118), 2002Adsorption of water vapors on single crystal and polycrystalline substrates is analyzed using the propagation of surface acoustic waves as an experimental tool. The perturbation in the SAW velocity (/spl Delta/v/v/sub 0/), the number N of adsorbed species as well as the changes in the density /spl Delta//spl rho///spl rho/ and in the elastic moduli ...
Anisimkin V I +3 more
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