Download or read book Signal Processing by Parametric Interactions in an Acoustic Surface Wave Device written by Emanuel Fliegler and published by . This book was released on 1975 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: A tutorial study of the acoustic surface wave signal processor, also known as a convolver, is presented. Frequency conversion and time compression occur when an input signal is fed into one port of the device and a reference signal is fed into the other port of the device. The output from the third port is at the sum frequency, and is defined as the convolution or correlation function of the input signals. Several ways in which this device can be used for signal processing, particularly in performing correlation and Fourier transformation, are presented. Convolver theory is given, with best results shown for semiconductor devices. Experimental results given for the Fourier transformation processing, show a good relationship to theory, and prove that it is now possible to perform this function in real time with arbitrary waveshapes. The convolver can perform a large number of signal processing functions with one basic, three port, acoustic surface wave delay line configuration, a significant achievement in flexibility. Of greatest importance is the performance of these functions in real time.

Download or read book Signal Processing by Parametric Interactions in Delay Line Devices written by Stanford University. Microwave Laboratory and published by . This book was released on 1972 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Signal Processing in Acoustic Surface Wave Devices written by Stanford University. Microwave Laboratory and published by . This book was released on 1971 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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.

Download or read book Microwave Acoustic and Bulk Device Technique Studies written by Stanford University. Microwave Laboratory and published by . This book was released on 1971 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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.

Download or read book Studies of Acoustic Wave Phenomena written by Stanford University. Microwave Laboratory and published by . This book was released on 1975 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Microwave Acoustic and Bulk Device Technique Studies written by Stanford University. Microwave Laboratory and published by . This book was released on 1974 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Surface Acoustic Waves for Signal Processing written by Michel Feldmann and published by Artech House Publishers. This book was released on 1989 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: "An excellent survey of the field and combines theoretical and practical information -- a very enjoyable and useful work." -- IEEE Transactions on UFFC

Download or read book Surface Wave Parametric Signal Processing written by Stanford University. Microwave Laboratory and published by . This book was released on 1971 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Acoustic Wave Semiconductor Convolver Applied to Electrical and Optical Signal Processing written by Herve Renson Gautier and published by . This book was released on 1975 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work presents an experimental and theoretical study of the interactions between acoustic surface waves on a piezoelectric insulator and charge carriers in a neighboring semiconductor separated by a small airgap; and the application of these phenomena to signal processing and optical imaging. Although the two media are mechanically isolated, the electric field associated with the surface waves penetrate into the semiconductor and interact with its charge carriers. This interaction is nonlinear, and, in the case of two oppositely propagating surface waves, real time convolution is performed. A new theory of the convolution interaction, taking into account the possible presence of a depletion, inversion or accumulation layer at the surface of the semiconductor, resulting from a built-in or applied dc field is presented. Experimental measurements for both n- and p-type Silicon on Lithium Niobate systems are in very good agreement with this theory, and they lead to a novel technique of measurement of the surface state distribution on semiconductors. The silicon on lithium niobate structure used gives rise to one of the largest convolution efficiencies reported to date. Several signal processing applications are presented. They show the versatility of the device which can be employed as a programmable filter or a parametric processor. In addition, the first autocorrelation is demonstrated by cascading two convolvers. The acoustic convolver was adapted for the scanning of optical images.

Download or read book Studies of Acoustic Wave Phenomena for the Period September 1971 to August 1972 written by Stanford University. Microwave Laboratory and published by . This book was released on 1972 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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:

Download or read book Study of Nonlinear Acoustics for the Purpose of Processing Sophisticated Signals written by C. F. Quate and published by . This book was released on 1974 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: The nonlinear interaction between two surface acoustic waves can be used in a number of signal processing devices. In this report the principles which underlie this interaction are developed both theoretically and experimentally. In the signal processing devices it is demonstrated that both convolution and fourier transformations can be carried out in real time. In the imaging work it is shown that acoustic surface waves can be used to scan optical images which are projected onto a semiconducting layer of silicon. This scanning process transfers spatial image pattern into a temporal pattern which can be transmitted electrically to a remote display station. (Modified author abstract).

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

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1991 with total page 1460 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.

Download or read book Surface Acoustic Wave Signal Processing Devices written by Jonathan Bregstone Green and published by . This book was released on 1982 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: