Download or read book SAW Oscillator Investigations Crystal Rotation Saw Oscillator Aging written by TRW DEFENSE AND SPACE SYSTEMS GROUP REDONDO BEACH CALIF. and published by . This book was released on 1978 with total page 57 pages. Available in PDF, EPUB and Kindle. Book excerpt: This final report describes the results of two surface acoustic wave oscillator studies. The first study demonstrated a new technique for varying the frequency of operation of SAW delay lines. The second study continued the ongoing aging test of four 250 MHz oscillators which was started in July 1975, and measured the aging rate of a new pair of oscillators fabricated using SAW delay lines with chrome/gold metallization. Future high performance communication systems will require frequency sources at UHF and microwave frequencies. SAW oscillators offer several advantages over bulk crystal oscillator multiplier chain type sources. The higher fundamental frequency capability of the SAW device eliminates the need for a multiplier chain, thus reducing size, weight, and power while providing superior phase noise characterisitics.

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1987 with total page 938 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Journal of the Acoustical Society of America written by and published by . This book was released on 1977 with total page 1334 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Surface Acoustic Wave SAW Oscillator Investigation written by TRW SYSTEMS GROUP REDONDO BEACH CALIF. and published by . This book was released on 1975 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt: This final report describes the results of the development, fabrication, evaluation and test performed by TRW Systems. The main purpose of the SAW oscillator program was to investigate the key performance parameters of SAW oscillators and particularly their short, medium and long term stability. SAW oscillators were fabricated to operate at 250 MHz and 500 MHz, and their performance was evaluated and compared against theoretical predictions. As the data presented in the following sections will show, the performance of these oscillators closely approaches or exceeds the currently reported state-of-the-art in nearly every respect. Perhaps even more important, this performance is related to the fabrication processes in such a way that directions for still better performance can be clearly seen.

Download or read book Government Reports Announcements Index written by and published by . This book was released on 1984 with total page 1534 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Advanced Surface Acoustic Wave SAW Oscillator Investigation written by TRW DEFENSE AND SPACE SYSTEMS GROUP REDONDO BEACH CALIF. and published by . This book was released on 1977 with total page 55 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes the results of the development, fabrication, evaluation, and test performed on Advanced Surface Acoustic Wave (SAW) Oscillators. The main purpose of the SAW oscillator program was the fabrication and characterization of SAW oscillators operating at 250 MHz, 500 MHz, and 1 GHz. As the data presented shows, the performance of these oscillators closely approaches or exceeds the current state-of-the-art in neary every respect.

Download or read book Government Reports Annual Index written by and published by . This book was released on 1985 with total page 1390 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Technical Reports Awareness Circular TRAC written by and published by . This book was released on 1988 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of the Symposium on Ultrasonic Electronics written by and published by . This book was released on 1983 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Electrical Electronics Abstracts written by and published by . This book was released on 1997 with total page 1948 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book 1978 Ultrasonics Symposium written by Ultrasonics Symposium and published by . This book was released on 1978 with total page 858 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of the 3rd Symposium on Ultrasonic Electronics written by and published by . This book was released on 1983 with total page 246 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 From Sundials to Atomic Clocks written by James Jespersen and published by Courier Corporation. This book was released on 1999-01-01 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: Clear and accessible introduction to the concept of time examines measurement, historic timekeeping methods, uses of time information, role of time in science and technology, and much more. Over 300 illustrations.

Download or read book Feedback Systems written by Karl Johan Åström and published by Princeton University Press. This book was released on 2021-02-02 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The essential introduction to the principles and applications of feedback systems—now fully revised and expanded This textbook covers the mathematics needed to model, analyze, and design feedback systems. Now more user-friendly than ever, this revised and expanded edition of Feedback Systems is a one-volume resource for students and researchers in mathematics and engineering. It has applications across a range of disciplines that utilize feedback in physical, biological, information, and economic systems. Karl Åström and Richard Murray use techniques from physics, computer science, and operations research to introduce control-oriented modeling. They begin with state space tools for analysis and design, including stability of solutions, Lyapunov functions, reachability, state feedback observability, and estimators. The matrix exponential plays a central role in the analysis of linear control systems, allowing a concise development of many of the key concepts for this class of models. Åström and Murray then develop and explain tools in the frequency domain, including transfer functions, Nyquist analysis, PID control, frequency domain design, and robustness. Features a new chapter on design principles and tools, illustrating the types of problems that can be solved using feedback Includes a new chapter on fundamental limits and new material on the Routh-Hurwitz criterion and root locus plots Provides exercises at the end of every chapter Comes with an electronic solutions manual An ideal textbook for undergraduate and graduate students Indispensable for researchers seeking a self-contained resource on control theory

Download or read book IEEE 1985 Ultrasonics Symposium written by and published by . This book was released on 1985 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Time and Frequency Theory and Fundamentals written by Byron Emerson Blair and published by . This book was released on 1974 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt: The document is a tutorial Monograph describing various aspects of time and frequency (T/F). Included are chapters relating to elemental concepts of precise time and frequency; basic principles of quartz oscillators and atomic frequency standards; historical review, recent progress, and current status of atomic frequency standards; promising areas for developing future primary frequency standards; relevance of frequency standards to other areas of metrology including a unified standard concept; statistics of T/F data analysis coupled with the theory and construction of the NBS atomic time scale; an overview of T/F dissemination techniques; and the standards of T/F in the USA. The Monograph addresses both the specialist in the field as well as those desiring basic information about time and frequency. The authors trace the development and scope of T/F technology, its improvement over periods of decades, its status today, and its possible use, applications, and development in days to come.