Download or read book UHF and Microwave Frequency Acoustic Surface Wave Delay Lines written by Andrew J. Slobodnik and published by . This book was released on 1973 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: Small, lightweight, reliable, low cost acoustic surface wave delay lines are particularly useful in a variety of military applications including electronic sensing and communications. The purpose of the report is to provide detailed comprehensive procedures and theories for the optimum design of UHF and microwave frequency acoustic surface wave delay lines consisting of two identical, periodic, uniform width, interdigital transducers. The circuit model used to characterize device performance as a function of frequency includes a lossy tuning inductor, finite resistivity transducer fingers, and parasitic shunt capacitance. Surface wave propagation loss is also included. (Modified author abstract).

Download or read book UHF and Microwave Frequency Acoustic Surface Wave Delay Lines written by Andrew James Slobodnik (Jr.) and published by . This book was released on 1973 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Small, lightweight, reliable, low cost acoustic surface wave delay lines are particularly useful in a variety of military applications including electronic sensing and communications. The purpose of the report is to provide detailed comprehensive procedures and theories for the optimum design of UHF and microwave frequency acoustic surface wave delay lines consisting of two identical, periodic, uniform width, interdigital transducers. The circuit model used to characterize device performance as a function of frequency includes a lossy tuning inductor, finite resistivity transducer fingers, and parasitic shunt capacitance. Surface wave propagation loss is also included. (Modified author abstract)

Download or read book UHF and Microwave Frequency Acoustic Surface Wave Delay Lines written by Andrew J. Slobodnik and published by . This book was released on 1973 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Design of Surface Wave Delay Lines with Interdigital Transducers written by Stanford University. Microwave Laboratory and published by . This book was released on 1969 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Pulse Compression Filters and Dispersive Delay Lines written by D. B. Armstrong and published by . This book was released on 1970 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report describes the design and construction of surface acoustic wave pulse compression-expansion filters which operate in the UHF microwave frequency range. A matched pair of filters having a center frequency of 700 MHz, an expanded pulse length of one micro-second, and a bandwidth of 300 MHz was built and tested to demonstrate the procedure. (Author).

Download or read book Signal Processing with Surface Acoustic Wave Delay Lines of Large Bandwidth and Delay written by C. M. Fortunko and published by . This book was released on 1975 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Surface Wave Delay Line Amplifiers written by K. M. Lakin and published by . This book was released on 1969 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Instrumentation Papers written by and published by . This book was released on 1970 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Acoustic Surface Wave Diffraction and Beam Steering written by Thomas L. Szabo and published by . This book was released on 1973 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report contains a detailed description of diffraction in acoustic surface wave devices. This source of loss is highly important in the design and realization of bandpass filters, long time delay lines and other devices for electronic sensors and communications systems. A complete review of acoustic surface wave diffraction on anisotropic substrates is presented. Full experimental verification of theory is provided. Complete computer program listings and descriptions are provided. The limits of applicability of the parabolic velocity surface theory are quantitatively delineated. Universal diffraction loss design curves are given for all parabolic materials. A limitation in the use of the exact angular spectrum of waves theory occurs for materials having a power flow angle slope approximately - 1 unless the velocity surfaces are very accurately known. Both YZ LiNbO3 and 16-1/2 degree double rotated LiNbO3 fall in this category. Approximate diffraction loss design curves are given for YZ LiNbO3. A complete tabular summary of all important material properties affecting acoustic surface wave device design is included. (Author).

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1989 with total page 1134 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Microwave Acoustics Handbook written by A. J. Slobodnik (Jr.) and published by . This book was released on 1973 with total page 732 pages. Available in PDF, EPUB and Kindle. Book excerpt: Information essential for the design of acoustic surface wave filters, signal processors, and other miniature, low cost, reliable devices for use in communications and electronic sensing is given in this report. Computations of surface wave velocity and electromechanical power flow angle, and estimates of surface wave coupling to interdigital transducers are given for various orientations of the following surface wave substrate materials: Ba2NaNb5O15, Bi12GeO20, CdS, Diamond, Eu3Fe5O15, Gadolinium Gallium Garnet, GaAs, Germanium, InSb, InAs, PbS, LiNbO3, MgO, Quartz, Rutile, Sapphire, Silicon, Spinel, TeO2, YAG, YGaG, YIG, and ZnO. Particular cuts of interest are then chosen for more detailed numerical calculations of mechanical and electrical parameters governing acoustic wave propagation in crystalline media. Similar data is given for common metals. A list of material constants and a bibliography of 520 surface wave papers are also included. (Author).

Download or read book 1974 Ultrasonics Symposium Proceedings written by John De Klerk and published by . This book was released on 1974 with total page 820 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book IEEE Ultrasonic Symposium Proceedings written by and published by . This book was released on 1979 with total page 2454 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Large Time bandwidth Product Surface Acoustic Wave Delay Lines written by Stephen Leslie Quilici and published by . This book was released on 1974 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Investigation of the Frequency Limitations of a Surface Wave Variable Delay Line written by Theodore H. Hopp and published by . This book was released on 1974 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: An acoustic surface wave, variable delay line was invented at HDL. It consists of a fixed interdigital source transducer formed by metal deposited on a piezoelectric, photoconductive surface. The receiving transducer is formed by illuminating the photoconductive surface through a mask to create the image of a transducer where the signal is to be received. By making the optics movable, a variable path length and, hence, a variable delay time can be achieved. This paper derives a limit on the maximum usable frequency of such a device and proposes some modifications to the invention which will increase this upper frequency limit. The feasibility of the systems described herein have not been experimentally investigated, but they all seem to have merit. A continuously variable acoustic surface wave delay line operating at 1 GHz appears to be feasible.

Download or read book Acoustic Surface Waves written by Eric A. Ash and published by Springer. This book was released on 1978 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: With contributions by numerous experts

Download or read book Ferroelectrics Literature Index written by T. F. Connolly and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 713 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research on ferroelectricity and ferroelectric materials started in 1920 with the discovery by Valasek that the variation of spontaneous polarization in Rochelle salt with sign and magnitude of an applied electric field traced a complete and reproducible hysteresis loop. Activity in the field was sporadic until 1935, when Busch and co-workers announced the observation of similar behavior in potassium dihydrogen phosphate and related compounds. Progress thereafter continued at a modest level with the undertaking of some theoretical as well as further experimental studies. In 1944, von Hippel and co-workers discovered ferroelectricity in barium titanate. The technological importance of ceramic barium titanate and other perovskites led to an upsurge of interest, with many new ferroelectrics being identified in the following decade. By 1967, about 2000 papers on various aspects of ferroelectricity had been published. The bulk of this widely dispersed literature was concerned with the experimental measurement of dielectric, crystallographic, thermal, electromechanical, elastic, optical, and magnetic properties. A critical and excellently organized cpmpilation based on these data appeared in 1969 with the publica tion of Landolt-Bornstein, Volume 111/3. This superb tabulation gave instant access to the results in the literature on nearly 450 pure substances and solid solutions of ferroelectric and antiferroelectric materials. Continuing interest in ferroelectrics, spurred by the growing importance of electrooptic crystals, resulted in the publication of almost as many additional papers by the end of 1969 as had been surveyed in Landolt-Bornstein.