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Novel Surface Acoustic Wave Transducer Techniques
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Book Synopsis Novel Surface Acoustic Wave Transducer Techniques by : Eugene R. Westerberg
Download or read book Novel Surface Acoustic Wave Transducer Techniques written by Eugene R. Westerberg and published by . This book was released on 1973 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt: The research demonstrates that a new electron-beam image projection exposure technique, the 'slit-lens', can be applied to the fabrication of high resolution interdigital patterns for use as high frequency surface acoustic wave transducers. Further research efforts include the development of the ancillary thin-film techniques for making metallic patterns on piezoelectric substrates, and the design, fabrication, and electrical test of actual surface acoustic wave delay lines produced by the foregoing techniques. (Author).
Book Synopsis Surface Acoustic Wave Devices and Their Signal Processing Applications by : Colin Campbell
Download or read book Surface Acoustic Wave Devices and Their Signal Processing Applications written by Colin Campbell and published by Elsevier. This book was released on 2012-12-02 with total page 485 pages. Available in PDF, EPUB and Kindle. Book excerpt: Surface Acoustic Wave Devices and Their Signal Processing Applications is a textbook that combines experiment and theory in assessing the signal processing applications of surface acoustic wave (SAW) devices. The operating principles of SAW devices are described from a circuit design viewpoint. This book is comprised of 18 chapters and begins with a historical background on surface acoustic waves and a discussion on the merits of SAW devices as well as their applications. The next chapter introduces the reader to the basics of acoustic waves and piezoelectricity, together with the effect of acoustic bulk waves on the performance of SAW filters. The principles of linear phase SAW filter design and equivalent circuit models for a SAW filter are then described. The remaining chapters focus on trade-offs in linear phase SAW filter design; compensation for second-order effects; harmonic SAW delay lines for gigahertz frequencies; and coding techniques using linear SAW transducers. The final chapter highlights Some other significant alternative design techniques and applications for SAW devices. This monograph will be suitable for engineering or physics students as well as engineers, scientists, and technical staff in industry who seek further information on SAW-based circuits, systems, and applications.
Book Synopsis Novel Sensors and Sensing by : Roger G. Jackson
Download or read book Novel Sensors and Sensing written by Roger G. Jackson and published by CRC Press. This book was released on 2019-08-21 with total page 363 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the last twenty years there has been tremendous growth in the research and development of sensors and sensor signal processing methods. Advances in materials and fabrication techniques have led to a departure from traditional sensor types and the development of novel sensing techniques and devices, many of which are now finding favor in indust
Book Synopsis Surface Acoustic Wave Filters by : David Morgan
Download or read book Surface Acoustic Wave Filters written by David Morgan and published by Academic Press. This book was released on 2010-07-27 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: Surface Acoustic Wave Filters gives the fundamental principles and device design techniques for surface acoustic wave filters. It covers the devices in widespread use today: bandpass and pulse compression filters, correlators and non-linear convolvers and resonators. The newest technologies for low bandpass filters are fully covered such as unidirectional transducers, resonators in impedance element filters, resonators in double-mode surface acoustic wave filters and transverse-coupled resonators using waveguides. The book covers the theory of acoustic wave physics, the piezoelectric effect, electrostatics at a surface, effective permittivity, piezoelectric SAW excitation and reception, and the SAW element factor. These are the main requirements for developing quasi-static theory, which gives a basis for the non-reflective transducers in transversal bandpass filters and interdigital pulse compression filters. It is also needed for the reflective transducers used in the newer devices. A thorough revision of a classic on surface acoustic wave filters first published in 1985 and still in print Uniquely combines easy-to-understand principles with practical design techniques for all the devices in widespread use today Complete coverage of all the latest devices which are key to mobile phones, TVs and radar systems Includes a new foreword by Sir Eric Albert Ash
Book Synopsis Advances in Surface Acoustic Wave Technology, Systems and Applications by : Clemens C. W. Ruppel
Download or read book Advances in Surface Acoustic Wave Technology, Systems and Applications written by Clemens C. W. Ruppel and published by World Scientific. This book was released on 2001 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt: Surface acoustic wave (SAW) devices are recognized for their versatility and efficiency in controlling and processing electrical signals. This has resulted in a multitude of device concepts for a wide range of signal processing functions, such as delay lines, filters, resonators, pulse compressors, convolvers, and many more. As SAW technology has found its way into mass market products such as TV receivers, pagers, keyless entry systems and cellular phones, the production volume has risen to millions of devices produced every day. At the other end of the scale, these are specialized high performance signal processing SAW devices for satellite communication and military applications, such as radar and electronic warfare. This volume, together with Volume 1, presents an overview of recent advances in SAW technology, systems and applications by some of the foremost researchers in this exciting field. Contents: Coupling-of-Modes Analysis of SAW Devices (V Plessky & J Koskela); Theory and Applications of Green''s Functions (A R Baghai-Wadji); New Piezoelectric Substrates for SAW Devices (J Kosinski); Pseudo and High Velocity Pseudo SAWs (M P da Cunha); SAW Devices Beyond 5 GHz (H Odagawa & K Yamanouchi); Wireless SAW Identification and Sensor Systems (F Schmidt & G Scholl); Interaction of Surface Acoustic Waves, Electrons, and Light (A Wixforth). Readership: Graduate students, researchers and academics in device and circuit design, as well as designers of mobile communications systems.
Book Synopsis Surface Acoustic Wave Devices in Telecommunications by : Ken-Ya Hashimoto
Download or read book Surface Acoustic Wave Devices in Telecommunications written by Ken-Ya Hashimoto and published by Springer Science & Business Media. This book was released on 2000-06-21 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: Surface acoustic wave (SAW) devices are widely used in mobile communications, a rapidly evolving market. This book gives an overview on the latest SAW technologies with an emphasis on the design and simulation of devices, such as resonator-based devices employing the SH-type leaky SAW.
Book Synopsis Handbook of Force Transducers by : Dan Mihai Stefanescu
Download or read book Handbook of Force Transducers written by Dan Mihai Stefanescu and published by Springer Science & Business Media. This book was released on 2011-03-16 with total page 634 pages. Available in PDF, EPUB and Kindle. Book excerpt: Part I introduces the basic "Principles and Methods of Force Measurement" according to a classification into a dozen of force transducers types: resistive, inductive, capacitive, piezoelectric, electromagnetic, electrodynamic, magnetoelastic, galvanomagnetic (Hall-effect), vibrating wires, (micro)resonators, acoustic and gyroscopic. Two special chapters refer to force balance techniques and to combined methods in force measurement. Part II discusses the "(Strain Gauge) Force Transducers Components", evolving from the classical force transducer to the digital / intelligent one, with the incorporation of three subsystems (sensors, electromechanics and informatics). The elastic element (EE) is the "heart" of the force transducer and basically determines its performance. A 12-type elastic element classification is proposed (stretched / compressed column or tube, bending beam, bending and/or torsion shaft, middle bent bar with fixed ends, shear beam, bending ring, yoke or frame, diaphragm, axial-stressed torus, axisymmetrical and voluminous EE), with emphasis on the optimum location of the strain gauges. The main properties of the associated Wheatstone bridge, best suited for the parametrical transducers, are examined, together with the appropriate electronic circuits for SGFTs. The handbook fills a gap in the field of Force Measurement, both experts and newcomers, no matter of their particular interest, finding a lot of useful and valuable subjects in the area of Force Transducers; in fact, it is the first specialized monograph in this inter- and multidisciplinary field.
Book Synopsis Modeling and Measurement Methods for Acoustic Waves and for Acoustic Microdevices by : Marco G. Beghi
Download or read book Modeling and Measurement Methods for Acoustic Waves and for Acoustic Microdevices written by Marco G. Beghi and published by BoD – Books on Demand. This book was released on 2013-08-28 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt: Acoustics is a mature field which enjoys a never ending youth. New developments are induced by either the search for a better understanding, or by technological innovations. Micro-fabrication techniques introduced a whole new class of microdevices, which exploit acoustic waves for various tasks, and in particular for information processing and for sensing purposes. Performance improvements are achievable by better modelling tools, able to deal with more complex configurations, and by more refined techniques of fabrication and of integration in technological systems, like wireless communications. Several chapters of this book deal with modelling and fabrication techniques for microdevices, including unconventional phenomena and configurations. But this is far from exhausting the research lines in acoustics. Theoretical analyses and modelling techniques are presented, for phenomena ranging from the detection of cracks to the acoustics of the oceans. Measurement methods are also discussed, which probe by acoustic waves the properties of widely different systems.
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 892 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Surface Acoustic Wave Devices by : Supriyo Datta
Download or read book Surface Acoustic Wave Devices written by Supriyo Datta and published by Prentice Hall. This book was released on 1986 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Design of Surface Acoustic Wave Sensors with Nanomaterial Sensing Layers by : Subramanian K. R. S. Sankaranarayanan
Download or read book Design of Surface Acoustic Wave Sensors with Nanomaterial Sensing Layers written by Subramanian K. R. S. Sankaranarayanan and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: ABSTRACT: Surface acoustic wave (SAW) sensors detect chemical and biological species by monitoring the shifts in frequency of surface acoustic waves generated on piezoelectric substrates. Incorporation of nanomaterials having increased surface area as sensing layer have been effective in improving the sensitivity as well as miniaturization of SAW sensors. Selectivity, sensitivity and speed of response are the three primary aspects for any type of sensor. This dissertation focuses on design and development of SAW devices with novel transducer configurations employing nanomaterial sensing layers for enhanced sensing, improved selectivity, and speed of response. The sensing mechanism in these SAW sensors is a complex phenomenon involving interactions across several different length and time scales. Surface acoustic wave propagation at the macro-scale is influenced by several kinetic phenomena occurring at the molecular scale such as adsorption, diffusion, reaction, and desorption which in turn depend on the properties of nanomaterials. This suggests the requirement of a multi-scale model to effectively understand and manipulate the interactions occurring at different length scales, thereby improving sensor design. Sensor response modeling at multiple time and length scales forms part of this research, which includes perturbation theories, and simulation techniques from finite element methods to molecular-level simulations for interpreting the response of these surface acoustic wave chemical and biosensors utilizing alloy nanostructures as sensing layers. Molecular modeling of sensing layers such as transition metal alloy nanoclusters and nanowires is carried out to gain insights into their thermodynamic, structural, mechanical and dynamic properties. Finite element technique is used to understand the acoustic wave propagation at the macroscale for sensing devices operating at MHz frequencies and with novel transducer designs. The findings of this research provide insights into the design of efficient surface acoustic wave sensors. It is expected that this work will lead to a better understanding of surface acoustic wave devices with novel transducer configurations and employing nanomaterial sensing layers.
Book Synopsis Surface Acoustic Wave Probing with Spaced Interdigital Transducers by : Stanford University. Ginzton Laboratory
Download or read book Surface Acoustic Wave Probing with Spaced Interdigital Transducers written by Stanford University. Ginzton Laboratory and published by . This book was released on 1976 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: We have found that interdigital surface acoustic wave (SAW) transducers deposited on glass substrates and positioned very close to a piezoelectric crystal delay line surface (spaced transducers) may be used to simulate identical transducers fabricated directly on the surface, for pretesting and prealignment of SAW devices. A novel spaced transducer mounting technique has been developed that utilizes a free floating gimbal, which permits positioning the spaced transducer substrate next to the delicately polished SAW substrate without any mutual wiping. This feature greatly extends the reliability of the spaced transducer and overcomes the problem of damaging the surface polish. The gimbal mechanism is mounted on a mobile support which assures good positioning and orientation accuracy. A number of important uses for the new spaced transducer configuration in connection with surface acoustic wave delay line simulation are described, and a brief treatment of the electrical and coupling properties of spaced transducers is also presented. (Author).
Book Synopsis Surface Acoustic Wave Devices in Telecommunications by : Ken-Ya Hashimoto
Download or read book Surface Acoustic Wave Devices in Telecommunications written by Ken-Ya Hashimoto and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 339 pages. Available in PDF, EPUB and Kindle. Book excerpt: Surface acoustic wave (SAW) devices are widely used in mobile communications, a rapidly evolving market. This book gives an overview on the latest SAW technologies with an emphasis on the design and simulation of devices, such as resonator-based devices employing the SH-type leaky SAW.
Book Synopsis Surface-Wave Devices for Signal Processing by : D.P. Morgan
Download or read book Surface-Wave Devices for Signal Processing written by D.P. Morgan and published by North Holland. This book was released on 1985 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent years have seen the emergence of a wide variety of electronic devices making use of surface acoustic waves in solids. This book focusses on the devices of greatest current interest and on the principles underlying them. An introductory survey is followed by chapters on acoustic wave fundamentals, electric excitation, transducers, multi-strip couplers and propagation effects. The interdigital transducer is emphasised since it is a key element in most devices. The remaining chapters - about half of the book - describe practical devices including delay lines, bandpass filters, chirp filters for pulse-compression radar (including reflective array compressors), convolvers and oscillators. For the main devices the text includes design principles, second-order effects, practical performance and, where appropriate, the role of the device in system applications. Some of the more mathematical details are relegated to Appendices, which include electrode interactions in transducers, sampling theory, the electrostatic element factor and the required relationships from Fourier analysis. A classified list of over 500 references is provided.The book will be of interest to engineers developing surface-wave devices, and to those using the devices in practical systems. It is also very suited for university courses or research work.
Book Synopsis Surface Acoustic Wave Devices and Their Signal Processing Applications by : Colin Campbell
Download or read book Surface Acoustic Wave Devices and Their Signal Processing Applications written by Colin Campbell and published by . This book was released on 1989 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis New Microwave-Surface-Acoustic-Wave Transducer by : Robert E. Lee
Download or read book New Microwave-Surface-Acoustic-Wave Transducer written by Robert E. Lee and published by . This book was released on 1974 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report describes the development of a novel electron-beam image-projection exposure apparatus termed the 'slit-lens' system that has been used to fabricate high-resolution patterns for use as microwave-frequency surface-acoustic-wave transducers. Further research efforts include the development of ancillary techniques for making: (1) the intermediate electron-transmission masks required by the slit-lens system, and (2) the thin films necessary for production of metallic patterns on piezoelectric substrates. Various high-frequency surface-wave-transducer structures have been fabricated and electrically tested. The new 'hybrid-grating' transducer has been produced and its performance compared to that of conventional interdigital transducers (at microwave frequencies). A theoretical analysis of the hybrid and grating transducer has been carried out and the input impedance of these transducers has been compared with that of a conventional interdigital structure. Particular attention was paid to the effect of parasitic capacitance on the performance of the various transducers. (Modified author abstract).
Book Synopsis Polymer Surfaces and Interfaces: Characterization, Modification and Application by : Kash L. Mittal
Download or read book Polymer Surfaces and Interfaces: Characterization, Modification and Application written by Kash L. Mittal and published by CRC Press. This book was released on 2023-01-06 with total page 435 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymeric materials are used for a legion of applications in a wide array of technological areas, and their proper surface/interface characteristics are of cardinal importance for their applications. Therefore, the need to characterize polymer surfaces/interfaces and their suitable modification to impart desired characteristics is quite patent. This book chronicles the proceedings of the Symposium on Polymer Surfaces and Interfaces: Characterization, Modification and Application held as a part of the Society of Plastics Engineers Annual Technical Conference, Boston, May 7--11, 1995. The articles in this book address many aspects of polymer surfaces and interfaces. Topics covered include: various ways (chemical, photochemical, laser, flame, corona) to modify polymer surfaces; modification of contact lens surfaces; various ways to analyze/characterize polymer surfaces; metal/polymer interfaces; metal/polyimide adhesion; metal/self-assembled organic monolayer interfaces; polymer alignment layers for liquid crystals; alignment of liquid crystal surfaces; polyimide alignment layers; molecular re-orientation of polymer surfaces; plasma polymerized organic coatings; epoxy/fiber interphase; epoxy underfill materials for packaging integrated circuits; transport in polymers; polymer miscibility; and cell adhesion.
