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    Radio Systems Engineering, Revised First Edition

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    Using a systems framework, this textbook provides a clear and comprehensive introduction to the performance, analysis, and design of radio systems for students and practicing engineers. Presented within a consistent framework, the first part of the book describes the fundamentals of the subject: propagation, noise, antennas, and modulation. The analysis and design of radios including RF circuit design and signal processing is covered in the second half of the book. Key features - Numerous examples within the text involve realistic analysis and design activities, and emphasize how practical experiences may differ from theory or taught procedures. - RF circuit design and analysis is presented with minimal involvement of Smith charts, enabling students to more readily grasp the fundamentals. - Both traditional and software-defined/direct sampling technology are described with pros and cons of each strategy explained. - 517 pages. Licensed CC BY NC 4.0. "This textbook gives engineering students a complete overview of radio systems and provides practicing wireless engineers with a convenient comprehensive reference." Patrick Roblin, Ohio State University Radio Systems Engineering, Revised First Edition was previously published by Cambridge University Press (2016) ISBN 9781107068285. This version is © Steven W. Ellingson and has been lightly updated to correct known errata, minor issues with text and figures, and to present examples in color highlight boxes and some figures in color. It is made freely available and under a Creative Commons Attribution NonCommercial International License (CC BY NC 4.0). Are you reviewing or adopting this book for a course? Please help us understand your use by filling out this form. Join the instructor group to connect with other instructors interested in this resource. How to access the book The main landing page for this book is <a href="https://doi.org/10.21061/radiosystemsengineering-revised1st ">https://doi.org/10.21061/radiosystemsengineering-revised1st. The open textbook is freely available online in multiple formats including PDF and HTML [forthcoming]. A paperback print version (in color) is available for order here. ISBNs ISBN (PDF): 978-1-957213-76-7 ISBN (HTML): 978-1-957213-77-4 (accessible version forthcoming) ISBN (print): 978-1-957213-75-0 Table of contents Chapter 1: Introduction Chapter 2: Antenna Fundamentals Chapter 3: Propagation Chapter 4: Noise Chapter 5: Analog Modulation Chapter 6: Digital Modulation Chapter 7: Radio Link Analysis Chapter 8: Two-Port Concepts Chapter 9: Impedance Matching Chapter 10: Amplifiers Chapter 11: Linearity, Multistage Analysis, and Dynamic Range Chapter 12: Antenna Integration Chapter 13: Analog Filters & Multiplexers Chapter 14: Frequency and Quadrature Conversion in the Analog Domain Chapter 15: Receivers Chapter 16: Frequency Synthesis Chapter 17: Transmitters Chapter 18: Digital Implementation of Radio Functions Appendix A: Empirical Modeling of Mean Path Loss Appendix B: Characteristics of Some Common Radio Systems About the author Dr. Steven W. Ellingson Steven W. Ellingson is an Associate Professor of Electrical & Computer Engineering at Virginia Tech. He received the Ph.D. degree in Electrical Engineering from the Ohio State University. He held senior engineering positions at Booz-Allen & Hamilton, Raytheon, and the Ohio State University ElectroScience Laboratory before joining the faculty of Virginia Tech. His research is in the areas of antennas and propagation, applied signal processing, and radio frequency instrumentation, with funding from the U.S. National Science Foundation, National Aeronautics and Space Administration, the Defense Advanced Research Projects Agency, and the commercial communications and aerospace industries. Dr. Ellingson serves as a consultant to industry and government on topics pertaining to radio frequency systems. Project support Support for editorial work, accessibility, publication assistance, and project management was provided by the Open Education Initiative of the University Libraries at Virginia Tech. Suggested citation Ellingson, Steven W. (2023). Radio Systems Engineering, Revised First Edition. Virginia Tech Publishing: Blacksburg. https://doi.org/10.21061/radiosystemsengineering-revised1st. Licensed with CC BY NC 4.0. Errata and error reporting View Errata Report an Error Accessibility Virginia Tech is committed to making its publications accessible in accordance with the Americans with Disabilities Act of 1990. Cover image: © Vallefrias. Used under license from Adobe. Cover design: Kindred Gre

    Electromagnetics, Volume 1

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    Electromagnetics, volume 1 by Steven W. Ellingson is a 225-page, peer-reviewed open educational resource intended for electrical engineering students in the third year of a bachelor of science degree program. It is intended as a primary textbook for a one-semester first course in undergraduate engineering electromagnetics. The book employs the “transmission lines first” approach in which transmission lines are introduced using a lumped-element equivalent circuit model for a differential length of transmission line, leading to one-dimensional wave equations for voltage and current. Note: Electromagnetics, volume 2 (2020) is now available at https://doi.org/10.21061/electromagnetics-vol-2. Suggested citation Ellingson, Steven W. (2018) Electromagnetics, Vol. 1. Blacksburg, VA: VT Publishing. https://doi.org/10.21061/electromagnetics-vol-1 CC BY-SA 4.0 Three formats of this book are available: - Print (ISBN 9780997920185) Available from Amazon.com - PDF (ISBN 9780997920192) - LaTeX source files Report adoption of this book here. If you are a professor reviewing, adopting, or adapting this textbook please help us understand your use by completing this form. Additional resources - Problem sets and the corresponding solution manual. - Slides of figures used in and created for the book. - Errata for Volume 1 - Community portal for the Electromagnetics series - Faculty listserv for the Electromagnetics series - Submit feedback and suggestions - Independent Reviews Table of contents Chapter 1: Preliminary Concepts Chapter 2: Electric and Magnetic Fields Chapter 3: Transmission Lines Chapter 4: Vector Analysis Chapter 5: Electrostatics Chapter 6: Steady Current and Conductivity Chapter 7: Magnetostatics Chapter 8: Time-Varying Fields Chapter 9: Plane Waves in Lossless Media Appendixes A. Constitutive Parameters of Some Common Materials B. Mathematical Formulas C. Physical Constants The Open Electromagnetics Project Led by Steven W. Ellingson at Virginia Tech, the goal of the Open Electromagnetics Project is to create no-cost openly-licensed content for courses in engineering electromagnetics. The project is motivated by two things: lowering learning material costs for students and giving faculty the freedom to adopt, modify, and improve their educational resources. Books in this series Electromagnetics, Volume 1 https://doi.org/10.21061/electromagnetics-vol-1 Electromagnetics, Volume 2 https://doi.org/10.21061/electromagnetics-vol-2 To express your interest in a book or this series, please visit http://bit.ly/vtpublishing-updates This book improves on Electromagnetics Volume 1 (beta) with the investment of field testing, copyediting, and technical review. Changes include correction of errors identified in the beta version errata and many minor improvements, addition of an index, addition of a separate manual of examples and solutions, and LaTeX source files for the book. About the author Steven W. Ellingson ([email protected]) is an Associate Professor at Virginia Tech in Blacksburg, Virginia in the United States. He received PhD and MS degrees in Electrical Engineering from the Ohio State University and a BS in Electrical & Computer Engineering from Clarkson University. He was employed by the US Army, Booz-Allen & Hamilton, Raytheon, and the Ohio State University ElectroScience Laboratory before joining the faculty of Virginia Tech, where he teaches courses in electromagnetics, radio frequency systems, wireless communications, and signal processing. His research includes topics in wireless communications, radio science, and radio frequency instrumentation. Professor Ellingson serves as a consultant to industry and government and is the author of Radio Systems Engineering (Cambridge University Press, 2016). Publication of this book was made possible in part by the Open Education Faculty Initiative Grant program at the University Libraries at Virginia Tech. http://guides.lib.vt.edu/oer/grants Cover design: Robert Browder Cover image: (c) Michelle Yost. Total Internal Reflection (modified by Robert Browder) is licensed with a Creative Commons Attribution-ShareAlike 2.0 license</a

    Electromagnetics, Volume 2

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    Electromagnetics, volume 2 by Steven W. Ellingson is a 216-page peer-reviewed open textbook designed especially for electrical engineering students in the third year of a bachelor of science degree program. It is intended as the primary textbook for the second semester of a two-semester undergraduate engineering electromagnetics sequence. The book addresses magnetic force and the Biot-Savart law; general and lossy media; parallel plate and rectangular waveguides; parallel wire, microstrip, and coaxial transmission lines; AC current flow and skin depth; reflection and transmission at planar boundaries; fields in parallel plate, parallel wire, and microstrip transmission lines; optical fiber; and radiation and antennas. Review or adopt this book If you are an instructor reviewing, adopting, or adapting this textbook please help us understand your use by completing this form. Additional resources - Problem sets and the corresponding solution manuals - Slides of figures used in and created for the book - LaTeX sourcefiles - Screen-reader friendly version - Errata for Volume 2 - Collaborator portal for the Electromagnetics series - Faculty listserv for the Electromagnetics series - Submit feedback and suggestions Three formats of this book are available - Print (ISBN 9781949373912) Available from Amazon.com - PDF (ISBN 9781949373929) - LaTeX source files Table of contents Chapter 1: Preliminary Concepts Chapter 2: Magnetostatics Redux Chapter 3: Wave Propagation in General Media Chapter 4: Current Flow in Imperfect Conductors Chapter 5: Wave Reflection and Transmission Chapter 6: Waveguides Chapter 7: Transmission Lines Redux Chapter 8: Optical Fiber Chapter 9: Radiation Chapter 10: Antennas Appendix A: Constitutive Parameters of Some Common Materials Appendix B: Mathematical Formulas Appendix C: Physical Constants The Open Electromagnetics Project Led by Steven W. Ellingson at Virginia Tech, the goal of the Open Electromagnetics Project is to create no-cost openly-licensed content for courses in engineering electromagnetics. The project is motivated by two things: lowering learning material costs for students and giving faculty the freedom to adopt, modify, and improve their educational resources. Books in this series Electromagnetics, Volume 1 https://doi.org/10.21061/electromagnetics-vol-1 Electromagnetics, Volume 2 https://doi.org/10.21061/electromagnetics-vol-2 To express your interest in a book or this series, please visit http://bit.ly/vtpublishing-updates Suggested citation Ellingson, Steven W. (2020) Electromagnetics, Vol. 2. Blacksburg, VA: Virginia Tech Publishing. https://doi.org/10.21061/electromagnetics-vol-2 CC BY-SA 4.0 About the author Steven W. Ellingson ([email protected]) is an Associate Professor at Virginia Tech in Blacksburg, Virginia in the United States. He received PhD and MS degrees in Electrical Engineering from the Ohio State University and a BS in Electrical & Computer Engineering from Clarkson University. He was employed by the US Army, Booz-Allen & Hamilton, Raytheon, and the Ohio State University ElectroScience Laboratory before joining the faculty of Virginia Tech, where he teaches courses in electromagnetics, radio frequency systems, wireless communications, and signal processing. His research includes topics in wireless communications, radio science, and radio frequency instrumentation. Professor Ellingson serves as a consultant to industry and government and is the author of Radio Systems Engineering (Cambridge University Press, 2016). Publication of this book was made possible in part by the Open Education Faculty Initiative Grant program at the University Libraries at Virginia Tech. http://guides.lib.vt.edu/oer/grants Cover design: Robert Browder Cover image: (c) Michelle Yost. Total Internal Reflection (modified by Robert Browder) is licensed with a Creative Commons Attribution-ShareAlike 2.0 license</a

    Electromagnetics Volume 1 (beta)

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    PLEASE NOTE: This item has been superceded by a new version. Electromagnetics Volume 1 (Aug. 2018), which is freely available electronically. Electromagnetics Volume 1 (BETA) (CC BY-SA 4.0) by Steven W. Ellingson is a 224-page, peer-reviewed, open educational resource intended to serve as a primary textbook for a one-semester first course in undergraduate engineering electromagnetics, and includes: electric and magnetic fields; electromagnetic properties of materials; electromagnetic waves; and devices that operate according to associated electromagnetic principles including resistors, capacitors, inductors, transformers, generators, and transmission lines. This book employs the "transmission lines first" approach, in which transmission lines are introduced using a lumped-element equivalent circuit model for a differential length of transmission line, leading to one-dimensional wave equations for voltage and current. This is intended for electrical engineering students in the third year of a bachelor of science degree program. Print copies of this book are available on Amazon.com (ISBN:978-0997920123). About this beta version The beta version of Volume 1 is being field tested in a Spring 2018 course. It will be updated and re-released at this site in VTechWorks in Summer 2018. The following will also be added: index (within the book); problem sets, solution manual, and LaTeX source code (in VTechWorks). Use, sharing, contributions to, and customization of this book or portions of this book or figures are an inherent part of the intent of the way this book has been published. Please let us alert you of changes and developments. Telling us that you are using, hosting, or adapting Electromagnetics allows us to update you regarding collaborative development opportunities, errata, new volumes and editions, supplements and ancillaries, and newly issued print versions. Tell us at: http://bit.ly/vtpublishing-updates Current errata for this volume can be found at: http://www.faculty.ece.vt.edu/swe/oem/Vol1Beta_errata.txt Share feedback & suggestions 1. Submit private or anonymous suggestions or feedback to the editor / author at: http://bit.ly/electromagnetics-suggestion 2. Share suggestions by annotating on the document using Hypothes.is https://web.hypothes.is View the guide for using Hypothesis to make comments http://bit.ly/userfeedbackguide 3. Submit additional suggestions via email to: [email protected] Table of contents Chapter 1: Preliminary Concepts Chapter 2: Electric and Magnetic Fields Chapter 3: Transmission Lines 29 Chapter 4: Vector Analysis Chapter 5: Electrostatics Chapter 6: Steady Current and Conductivity Chapter 7: Magnetostatics Chapter 8: Time-Varying Fields Chapter 9: Plane Wave Propagation in Lossless Media Appendix A: Constitutive Parameters of Some Common Materials Appendix B: Mathematical Formulas Appendix C: Physical Constants The open Electromagnetics project at Virginia Tech This textbook is part of the Open Electromagnetics Project led by Steven W. Ellingson at Virginia Tech. The goal of the project is to create no-cost openly-licensed content for courses in undergraduate engineering electromagnetics. The project is motivated by two things: lowering learning material costs for students and giving faculty the freedom to adopt, modify, and improve their educational resources. Cover design: Robert Browder Cover image: (c) Michelle Yost. Total Internal Reflection (modified by Robert Browder) is licensed with a Creative Commons Attribution-ShareAlike 2.0 license About the author Steven W. Ellingson ([email protected]) is an Associate Professor at Virginia Tech in Blacksburg, Virginia in the United States. He received PhD and MS degrees in Electrical Engineering from the Ohio State University and a BS in Electrical & Computer Engineering from Clarkson University. He was employed by the US Army, Booz-Allen & Hamilton, Raytheon, and the Ohio State University ElectroScience Laboratory before joining the faculty of Virginia Tech, where he teaches courses in electromagnetics, radio frequency systems, wireless communications, and signal processing. His research includes topics in wireless communications, radio science, and radio frequency instrumentation. Professor Ellingson serves as a consultant to industry and government and is the author of Radio Systems Engineering (Cambridge University Press, 2016). Suggested citation Ellingson, Steven W. (2018) Electromagnetics, Vol. 1 (Beta). Blacksburg, VA: VT Publishing. https://doi.org/10.7294/W4WQ01ZM Licensed with CC BY-SA 4.0 https://creativecommons.org/licenses/by-sa/4.0 Publication of this book was made possible in part by the Virginia Tech University Libraries’ Open Education Faculty Initiative Grant program: http://guides.lib.vt.edu/oer/grants</a

    Going Beyond Counting First Authors in Author Co-citation Analysis

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    The present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed

    Variations on the Author

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    “Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship

    Appropriate Similarity Measures for Author Cocitation Analysis

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    We provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis

    Dispelling the Myths Behind First-author Citation Counts

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    We conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more sophisticated methods

    Author Index

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