Low Loss Flexible Dielectric Waveguide For Millimeter Wave Transmission And Its Application To Devices

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Low-Loss Flexible Dielectric Waveguide for Millimeter-Wave Transmission and Its Application to Devices

Author : W. B. Bridges
Publisher :
ISBN 13 :
Total Pages : 42 pages
Book Rating : 4.:/5 (227 download)

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Book Synopsis Low-Loss Flexible Dielectric Waveguide for Millimeter-Wave Transmission and Its Application to Devices by : W. B. Bridges

Download or read book Low-Loss Flexible Dielectric Waveguide for Millimeter-Wave Transmission and Its Application to Devices written by W. B. Bridges and published by . This book was released on 1984 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: Flexible dielectric waveguides have been fabricated for use at 94 GHz and 10 GHz by filling Teflon tubing with high dielectric constant powders. Losses as low as 0.18 db/cm were measured at 94 GHz with these flexible guides. The theoretical expressions for a round dielectric waveguide with a finite thickness cladding were reviewed, and numerical calculations based on this theory gave good agreement with guide wavelength values measured on the 10 GHz guides. Shorted waveguide measurements at 10 GHz were used to determine dielectric constant as a function of powder density for various low-loss powders: Trans-Tech D-8512 barium tetratitanate, Trans-Tech D-38 barium tetratitanate, Trans-Tech D-30 nickel aluminum titatanate, Trans-Tech MCT-40 magnesium calcium titanate, and Emerson and Cuming Ecco-Flo. Guide wavelengths were also measured for waveguides made by filling rectangular grooves (approximately 1mm x 1mm) in Teflon substrates with low-loss powders. These measured wavelengths were compared to those predicted by the approximate theory of Marcatili. (Author).

The Essence of Dielectric Waveguides

Author : C. Yeh
Publisher : Springer Science & Business Media
ISBN 13 : 0387497994
Total Pages : 529 pages
Book Rating : 4.3/5 (874 download)

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Book Synopsis The Essence of Dielectric Waveguides by : C. Yeh

Download or read book The Essence of Dielectric Waveguides written by C. Yeh and published by Springer Science & Business Media. This book was released on 2008-06-17 with total page 529 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Essence of Dielectric Waveguides provides an overview of the fundamental behavior of guided waves, essential to finding and interpreting the results of electromagnetic waveguide problems. Clearly and concisely written as well as brilliantly organized, this volume includes a detailed description of the fundamentals of electromagnetics, as well as a new discussion on boundary conditions and attenuation. It also covers the propagation characteristics of guided waves along classical canonical dielectric structures – planar, circular cylindrical, rectangular and elliptical waveguides. What’s more, the authors have included extensive coverage of inhomogeneous structures and approximate methods, as well as several powerful numerical approaches specifically applicable to dielectric waveguides.

Scientific and Technical Aerospace Reports

Author :
Publisher :
ISBN 13 :
Total Pages : 1572 pages
Book Rating : 4.:/5 (31 download)

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Book Synopsis Scientific and Technical Aerospace Reports by :

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1992 with total page 1572 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Millimeter-Wave Waveguides

Author : Dmitri Lioubtchenko
Publisher : Springer Science & Business Media
ISBN 13 : 0306487241
Total Pages : 191 pages
Book Rating : 4.3/5 (64 download)

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Book Synopsis Millimeter-Wave Waveguides by : Dmitri Lioubtchenko

Download or read book Millimeter-Wave Waveguides written by Dmitri Lioubtchenko and published by Springer Science & Business Media. This book was released on 2007-05-08 with total page 191 pages. Available in PDF, EPUB and Kindle. Book excerpt: Millimeter-Wave Waveguides is a monograph devoted to open waveguides for millimeter wave applications. In the first chapters, general waveguide theory is presented (with the emphasis on millimeter wave applications). Next, the book systematically describes the results of both theoretical and experimental studies of rectangular dielectric rod waveguides with high dielectric permittivities. Simple and accurate methods for propagation constant calculations for isotropic as well as anisotropic dielectric waveguides are described. Both analytical and numerical approaches are covered. Different types of transitions have been simulated in order to find optimal configurations as well as optimal dimensions of dielectric waveguides for the frequency band of 75-110 GHz. Simple and effective design is presented. The experimental studies of dielectric waveguides show that Sapphire waveguide can be utilized for this frequency band as a very low-loss waveguide. Design of antennas with low return loss based on dielectric waveguides is also described.

Technical Abstract Bulletin

Author : Defense Documentation Center (U.S.)
Publisher :
ISBN 13 :
Total Pages : 824 pages
Book Rating : 4.:/5 (5 download)

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Book Synopsis Technical Abstract Bulletin by : Defense Documentation Center (U.S.)

Download or read book Technical Abstract Bulletin written by Defense Documentation Center (U.S.) and published by . This book was released on 1963 with total page 824 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Infrared and Millimeter Waves V9

Author : Kenneth J. Button
Publisher : Elsevier
ISBN 13 : 0323153992
Total Pages : 363 pages
Book Rating : 4.3/5 (231 download)

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Book Synopsis Infrared and Millimeter Waves V9 by : Kenneth J. Button

Download or read book Infrared and Millimeter Waves V9 written by Kenneth J. Button and published by Elsevier. This book was released on 1983-01-01 with total page 363 pages. Available in PDF, EPUB and Kindle. Book excerpt: Infrared and Millimeter Waves, Volume 9: Millimeter Components and Techniques, Part I compiles the work of several authors while focusing on certain aspects of infrared and millimeter waves, such as sources of radiation, instrumentation, and millimeter systems. This volume deals with millimeter components and techniques. Chapter 1 covers millimeter wave communications, and then the succeeding chapter discusses a comparative study of millimeter waves and transmission lines. This book then tackles dielectric waveguide electrooptic devices, as well as millimeter-wave propagation and remote sensing of the atmosphere, which are covered in Chapter 4. The fifth chapter presents the technology of large radio telescopes for millimeter and submillimeter. The next chapter explains a gyrotron study program, and the last chapter discusses multimode analysis of quasi-optical gyrotrons and gyroklystrons. This book will be of great use for researchers or professionals whose work involves infrared and millimeter waves.

Government Reports Annual Index

Author :
Publisher :
ISBN 13 :
Total Pages : 1384 pages
Book Rating : 4.:/5 (89 download)

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Book Synopsis Government Reports Annual Index by :

Download or read book Government Reports Annual Index written by and published by . This book was released on 1983 with total page 1384 pages. Available in PDF, EPUB and Kindle. Book excerpt:

From Analytic to Numerical Electromagnetics: Contributions by C. Yeh and his collaborators

Author : C.Yeh
Publisher : Dog Ear Publishing
ISBN 13 : 1457536250
Total Pages : 850 pages
Book Rating : 4.4/5 (575 download)

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Book Synopsis From Analytic to Numerical Electromagnetics: Contributions by C. Yeh and his collaborators by : C.Yeh

Download or read book From Analytic to Numerical Electromagnetics: Contributions by C. Yeh and his collaborators written by C.Yeh and published by Dog Ear Publishing. This book was released on 2018-03-20 with total page 850 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on properly organized reprints by C. Yeh and his collaborators, innovative and original solutions to a number of fundamental problems, essential to the teaching and research in modern electromagnetics, are presented in From Analytic to Numerical Electromagnetics. The wide range of coverage from general applied theory to the pioneering development of canonical solutions and numerical methods offers a rare in-depth understanding of the methods used in solving complex problems in classical and modern electromagnetics. Selected specific examples of solved problems are: New derivation of boundary conditions, conditions for scalar wave approximation, completeness of the far-zone data, correct power loss calculation, limitations of directional coupler theory, calculation of noise temperature of lossy plate, canonical solutions for elliptic, parabolic or spheroidal dielectric structures, waves in periodic medium, focused beam scattering, relativistically moving medium, terahertz low-loss waveguides, WDM optical fiber solitons, particle radiation in complex medium, and being the first to develop these numerical methods - FEM, BPM, 4x4 Matrix Method, EBCM, TLM, and 2 Point Boundary Method - to solve complex Electromagnetics problems. Readers will find the subjects covered in this book to be a useful supplement to a standard advanced textbook on electromagnetics. To researchers and engineers, From Analytic to Numerical Electromagnetics will be a valuable reference and guide to obtain solutions to problems dealing with optical communications, optical solitons, photonics, and terahertz, plasmonic, metamaterial or nano waveguides.

Government Reports Announcements & Index

Author :
Publisher :
ISBN 13 :
Total Pages : 1128 pages
Book Rating : 4.E/5 ( download)

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Book Synopsis Government Reports Announcements & Index by :

Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1985-02 with total page 1128 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Practical Approach to Substrate Integrated Waveguide (SIW) Diplexer: Emerging Research and Opportunities

Author : Nwajana, Augustine Onyenwe
Publisher : IGI Global
ISBN 13 : 1799820866
Total Pages : 171 pages
Book Rating : 4.7/5 (998 download)

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Book Synopsis Practical Approach to Substrate Integrated Waveguide (SIW) Diplexer: Emerging Research and Opportunities by : Nwajana, Augustine Onyenwe

Download or read book Practical Approach to Substrate Integrated Waveguide (SIW) Diplexer: Emerging Research and Opportunities written by Nwajana, Augustine Onyenwe and published by IGI Global. This book was released on 2020-02-07 with total page 171 pages. Available in PDF, EPUB and Kindle. Book excerpt: Substrate integrated waveguide (SIW) technology is a twenty-first century transmission line that has evolved recently to open new doors to the development of efficient circuits and devices operating in the microwave and millimeter-wave frequency range. Microstrip circuits and devices are inefficient at high frequency applications and require very stringent manufacturing tolerances when used to implement microwave and millimeter-wave components. This is as a result of the fact that wavelengths are short at higher frequencies. Waveguide circuits and devices are preferred for higher frequency applications, but they are expensive and difficult to manufacture. It is also very challenging to integrate a waveguide device with planar devices in its vicinity. The SIW bridges the gap between the traditional air-filled waveguide and planar transmission lines such as microstrip. Practical Approach to Substrate Integrated Waveguide (SIW) Diplexer: Emerging Research and Opportunities is an essential reference source that discusses the development of efficient circuits and devices operating in the microwave and millimeter-wave frequency range through the use of substrate integrated waveguides. Featuring research on topics such as microstrip resonators, circuit model analysis, and quality factor extraction, this book is ideally designed for researchers, engineers, scientists, developers, scholars, practitioners, educators, policymakers, and students.

Antennas

Author : Yi Huang
Publisher : John Wiley & Sons
ISBN 13 : 1119092345
Total Pages : 548 pages
Book Rating : 4.1/5 (19 download)

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Book Synopsis Antennas by : Yi Huang

Download or read book Antennas written by Yi Huang and published by John Wiley & Sons. This book was released on 2021-09-02 with total page 548 pages. Available in PDF, EPUB and Kindle. Book excerpt: Antennas From Theory to Practice Comprehensive coverage of the fundamentals and latest developments in antennas and antenna design In the newly revised Second Edition of Antennas: From Theory to Practice, renowned researcher, engineer, and author Professor Yi Huang delivers comprehensive and timely coverage of issues in modern antenna design and theory. Practical and accessible, the book is written for engineers, researchers, and students who work with radio frequency/microwave engineering, radar, and radio communications. The book details the basics of transmission lines, radiowaves and propagation, antenna theory, antenna analysis and design using industrial standard design software tools and the theory of characteristic modes, antenna measurement equipment, facilities, and techniques. It also covers the latest developments in special topics, like small and mobile antennas, wide- and multi-band antennas, automotive antennas, RFID, UWB, metamaterials, reconfigurable and MIMO antennas, and more. The new edition includes up to date information on a wide variety of newly relevant topics and trends, like adaptive impedance matching, the theory of characteristic modes, antenna materials and fabrication processes, and over-the-air (OTA) antenna system measurements. Many questions and examples are provided which enhances the learning experience. The book covers: An introduction to circuit concepts and transmission lines, including lumped and distributed element systems, transmission line theory, and the Smith Chart An exploration of field concepts and radiowaves, including wave equations and solutions and radiowave propagation mechanisms, characteristics, and models Discussions of antenna basics and popular antennas, including wire-type antennas, aperture-type antennas, and antenna arrays Information about antenna manufacturing and measurements, including antenna measurement facilities and methods The use of industrial standard simulation tools for antenna design and analysis Perfect for engineers and researchers who work in RF engineering or radar and radio communications, Antennas: From Theory to Practice, Second Edition will also earn a place on the bookshelves of university students seeking a concise and practical introduction to the basics of antennas and antenna design.

Dielectric Filled Printed Gap Waveguide for Millimeter Wave Applications

Author : Jing Zhang
Publisher :
ISBN 13 :
Total Pages : 126 pages
Book Rating : 4.:/5 (113 download)

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Book Synopsis Dielectric Filled Printed Gap Waveguide for Millimeter Wave Applications by : Jing Zhang

Download or read book Dielectric Filled Printed Gap Waveguide for Millimeter Wave Applications written by Jing Zhang and published by . This book was released on 2017 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: As the communication system goes up to millimeter-wave frequencies for high data rate demands, the conventional microstrip line no longer meets the requirements due to its excessive radiation and harmful surface waves, causing unacceptable insertion loss and interference issues. The radiation and surface waves are absent in the stripline. However, its conductor loss becomes worse due to the narrower strip causing by the implemented two ground planes. In addition, any vertical asymmetry in the stripline can generate unwanted higher order waveguide modes that will be able to propagate wherever the ground planes exist. The standard waveguide technology is not suitable for millimeter-wave bands because of the small dimension of the hole, which causes fabrication challenging and high cost.The new technology of gap waveguide (GW) offers a solution to the above problems in current guiding structures. Considerable effort is being made to miniaturize it using the printed circuit technology for low-cost and low-profile applications. The microstrip-ridge GW and the inverted microstrip GW are the two candidates reported previously. However, they come with their own drawbacks. The tiny air gap makes it very sensitive to the outside pressure or the environmental factors. The plated vias in the copper strip and the electroless nickel immersion gold (ENIG) coating on the strip cause substantial attenuation and a frequency shift. In addition, it is challenging to connect to other transmission lines or conventional rectangular waveguides for the integration and measurements. Therefore, one major part of this thesis is to develop innovative GW structures without the formerly mentioned issues to be suitable for millimeter-wave frequencies and easier implementation. Another major part is developing passive components, such as antenna arrays, using the proposed new GW structures. The third part is studying the GW-based PMC packaging for the irregular ground/PEC plane. This will help extend this new packaging technology from the microstrip line circuits to the substrate integrated waveguide (SIW)- or grounded coplanar waveguide (GCPW)-based circuits.

Japanese Science and Technology, 1983-1984

Author : United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch
Publisher :
ISBN 13 :
Total Pages : 1080 pages
Book Rating : 4.E/5 ( download)

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Book Synopsis Japanese Science and Technology, 1983-1984 by : United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch

Download or read book Japanese Science and Technology, 1983-1984 written by United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch and published by . This book was released on 1985 with total page 1080 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Sixth International Conference on Infrared and Millimeter Waves, December 7-12, 1981, Carillon Hotel, Miami Beach, Florida

Author :
Publisher :
ISBN 13 :
Total Pages : 330 pages
Book Rating : 4.E/5 ( download)

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Book Synopsis Sixth International Conference on Infrared and Millimeter Waves, December 7-12, 1981, Carillon Hotel, Miami Beach, Florida by :

Download or read book Sixth International Conference on Infrared and Millimeter Waves, December 7-12, 1981, Carillon Hotel, Miami Beach, Florida written by and published by . This book was released on 1981 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Government Reports Annual Index: Keyword A-L

Author :
Publisher :
ISBN 13 :
Total Pages : 976 pages
Book Rating : 4.:/5 (319 download)

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Book Synopsis Government Reports Annual Index: Keyword A-L by :

Download or read book Government Reports Annual Index: Keyword A-L written by and published by . This book was released on 1985 with total page 976 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Millimeter Wave Optical Dielectric Integrated Guides and Circuits

Author : Shiban K. Koul
Publisher : Wiley-Interscience
ISBN 13 :
Total Pages : 600 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Millimeter Wave Optical Dielectric Integrated Guides and Circuits by : Shiban K. Koul

Download or read book Millimeter Wave Optical Dielectric Integrated Guides and Circuits written by Shiban K. Koul and published by Wiley-Interscience. This book was released on 1997-04-04 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt: This much-needed reference equips electrical engineers, designers, and researchers in the microwave industry with comprehensive, up-to-date information on the theoretical principles and practical applications of dielectric integrated guides and circuits.

Configuration Study of New Low-Loss MM (Millimeter) Wave Guiding Structures

Author : Cavour Yeh
Publisher :
ISBN 13 :
Total Pages : 14 pages
Book Rating : 4.:/5 (227 download)

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Book Synopsis Configuration Study of New Low-Loss MM (Millimeter) Wave Guiding Structures by : Cavour Yeh

Download or read book Configuration Study of New Low-Loss MM (Millimeter) Wave Guiding Structures written by Cavour Yeh and published by . This book was released on 1985 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report summarizes the result of the research carried out at EMtec Engineering, Inc., Los Angeles, under Contract DAAG 29-84-C-0025 with the Army Research Office. The primary objective of this research program was to learn whether there exists a dielectric waveguide configuration which offers lower loss figure than a circular dielectric rod. Important evidence was found which showed that it is feasible to optimize a configuration to achieve low-loss guidance of mm waves. Future research areas are also described in this report. Keywords include: MM waves; Dielectric waveguide; Electromagnetic waves; and Guided waves.