Author : Arthur Ballato
Publisher :
Page : 49 pages
File Size : 13,1 MB
Release : 1979
Category :
ISBN :
Shallow bulk acoustic wave propagation in piezoelectric crystals is considered from the standpoint of work reported to date. It is compared to bulk and surface acoustic waves as to properties and device potential. Singly and doubly rotated cuts are considered, as are piezoelectric transduction, energy trapping equivalent networks, as well as areas of future work such as new materials, other than quartz, and nonlinear effects. (Author).
Author :
Publisher :
Page : 54 pages
File Size : 36,90 MB
Release : 1981
Category :
ISBN :
This final report summarizes the most important results of the Investigation of Shallow Bulk Acoustic Waves (SBAW) program. This program was conceived on the principle that SBAW technology could lead to devices that are superior to those presently available for frequency filtering and control. The primary objective was to establish whether this technology could provide devices that were as stable as the low frequency bulk wave resonators and yet operate at frequencies higher than the surface acoustic wave devices. The investigations have shown that SBAW devices can be built with excellent temperature stability, low spurious modes and at frequencies higher than those of SAW devices and bulk wave resonators.
Author : Arthur Ballato
Publisher :
Page : 9 pages
File Size : 47,60 MB
Release : 1979
Category :
ISBN :
Author : Arthur Ballato
Publisher :
Page : 31 pages
File Size : 13,83 MB
Release : 1979
Category :
ISBN :
Doubly rotated cut quartz possesses many desirable features for acoustic wave devices. In addition to its excellent temperature behavior, it nonlinear elasticity produces mechanical and thermal stress-compensating effects. Doubly rotated cuts of quartz have been extensively used to construct bulk wave resonators for frequency-stable sources. In this report we will describe the acoustic properties of Surface Acoustic Waves (SAW) and Shallow Bulk Acoustic Waves (SBAW) on doubly rotated quartz. A number of delay lines have been constructed on various doubly rotated cuts of quartz. The frequency response of SAW is similar to that obtained on ST-cut quartz. The three SBAW modes predicted from theory were also observed. Both theoretical and experimental results are presented. (Author).
Author : Joel Frederick Rosenbaum
Publisher : Artech House Acoustics Library
Page : 488 pages
File Size : 37,64 MB
Release : 1988
Category : Technology & Engineering
ISBN :
This text/reference provides background for those new to the field, gives numerous problems sets and practical examples, and discusses computer aided design and analysis. Annotation copyright Book News, Inc. Portland, Or.
Author : K. V. Rousseau
Publisher :
Page : 6 pages
File Size : 26,40 MB
Release : 1983
Category :
ISBN :
This paper describes the design and fabrication of high-frequency shallow bulk acoustic wave (SBAW) delay lines on quartz. Direct generation of frequency tones in the GHz range is desirable because it avoids the phase noise increase inherent in the multiplication of low frequency bulk-wave sources. The close-in phase noise can then be improved if desired by locking the GHz source with a bulk crystal. The devices reported in the paper used crystal cuts near AT because of its high velocity and BT because of its excellent temperature stability. Design parameters are chosen using an in-line model. This model uses the aperture width, number of fingers, wave velocity and coupling constant to predict radiation resistance, capacitance, and conversion loss. When used in conjunction with experimental propagation loss data, this model accurately predicts the total insertion loss of the device. Recent refinements of this model indicate that, at GHz frequencies, a significant trade-off exists between insertion loss and Q.
Author : Guigen Zhang
Publisher : CRC Press
Page : 302 pages
File Size : 45,20 MB
Release : 2022-01-27
Category : Mathematics
ISBN : 1000522865
This book introduces acoustic wave theories using a reader-friendly matrix-based linear algebra approach. It will enable the reader to take advantage of software tools such as MATLAB (commercial codes) and OCTAVE (open-source codes) to gain better and deeper understanding of the underlying physics quickly. In this aspect, this text can be regarded as a practical introduction of the acoustic wave theories in an easy-to-follow linear algebra format using matrix manipulations instead of an abstract approach relying on tensor manipulations. The book also uses case studies to demonstrate how the fundamentals on acoustic waves discussed throughout the book are applied in device designs and analyses such that the connections and interdependences between the underlying sciences and the observed behavior and performances can be better appreciated by the reader. To achieve this, all problems for illustrations, examples, case studies, and device analyses are developed and solved based on the mathematical foundations laid out in the book.
Author : Colin Campbell
Publisher : Elsevier
Page : 485 pages
File Size : 47,53 MB
Release : 2012-12-02
Category : Technology & Engineering
ISBN : 0323148662
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.
Author : K. V. Rousseau
Publisher :
Page : 91 pages
File Size : 22,93 MB
Release : 1982
Category :
ISBN :
The objective of this program is to develop stable shallow bulk acoustic wave (SBAW) oscillators, stabilized directly at L through X band frequencies. This first annual report describes the technical progress of the program for the period of September 1981 to August 1982. The major activities for this period were the examination of system applications of SBAW oscillators, SBAW device investigation, device fabrication, and oscillator circuit design. The parameters studied in the SBAW device investigation were material aspects, metallization effect, transducer configuration, equivalent circuit, and harmonic operation. Device fabrication has concentrated on delay lines operating at frequencies from 3 to 5 GHz, and results have been obtained for device mounting and packaging. SBAW oscillator circuit designs have been developed and are in fabrication. Several systems have been identified in which the use of high frequency SBAW devices will greatly improve system performance. From the system study, it is clear that as more and more weapon systems move to millimeter wave, there will be an increasing requirement for stable, low noise frequency sources and precision test equipment. SBAW technology will provide the devices which will be needed to meet this challenge. (Author).
Author : Colin Campbell
Publisher : Academic Press
Page : 660 pages
File Size : 30,31 MB
Release : 1998-06-17
Category : Art
ISBN : 9780121573409
Written for readers with or without surface acoustic wave (SAW) experience, this book covers a wide range of SAW filter- and device-design techniques as well as applications to mobile and wireless circuitry. It provides numerous references and worked examples on SAW devices to highlight various design aspects, and contains illustrations from many leading electronic companies around the world. The first half of the book covers the principles of SAW devices. The secondhalf focuses on applications to the mobile/wireless field, including SAW devices for antenna duplexers, RF and IF filters for cellular cordless phones, front-end filters for wireless transceivers, fixed and tunable oscillators, filters for on-board satellite communications, as well as coding and convolvers for indoor/outdoor spread-spectrum communications. Surface Acoustic Wave Devices for Mobile and Wireless Communications serves as an excellent sourcebook for engineers and designers with some SAW background, or for technical staff with no prior knowledge of SAW devices who need to know how this technology can help their products. It can be used as a textbook for senior and graduate students engaged in the study of signal processing techniques and systems for mobile communications. Key Features * First SAW text applied to mobile and wireless communications * Written by an award-winning researcher with over 20 years of SAW device experience * Presents the theory and design of major SAW devices for mobile/wireless communications as applied to some of the major telecommunication standards * Accessible to both engineering and scientific readers with or without prior SAW device knowledge
