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Author :
Publisher :
ISBN 13 :
Total Pages : 382 pages
Book Rating : 4.:/5 (94 download)
Download or read book The Temperature Dependence of the Complex Permittivity of Dielectric Materials written by and published by . This book was released on 1981 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : M. A. T. Daoud
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (536 download)
Download or read book The Temperature Dependance of the Complex Permittivity of Dielectric Materials, Measured at Microwave Frequency written by M. A. T. Daoud and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jonathan Breeze
Publisher : Springer
ISBN 13 : 3319445472
Total Pages : 180 pages
Book Rating : 4.3/5 (194 download)
Download or read book Temperature and Frequency Dependence of Complex Permittivity in Metal Oxide Dielectrics: Theory, Modelling and Measurement written by Jonathan Breeze and published by Springer. This book was released on 2016-09-08 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis investigates the dielectric properties of metal-oxide ceramics at microwave frequencies. It also demonstrates for the first time that a theory of harmonic phonon coupling can effectively predict the complex permittivity of metal oxides as a function of temperature and frequency. Dielectric ceramics are an important class of materials for radio-frequency, microwave and emergent terahertz technologies. Their key property is complex permittivity, the real part of which permits the miniaturisation of devices and the imaginary part of which is responsible for the absorption of electromagnetic energy. Absorption limits the practical performance of many microwave devices such as filters, oscillators, passive circuits and antennas. Complex permittivity as a function of temperature for low-loss dielectrics is determined by measuring the resonant frequency of dielectric resonators and using the radial mode matching technique to extract the dielectric properties. There have been only a handful of publications on the theory of dielectric loss, and their predictions have often been unfortunately unsatisfactory when compared to measurements of real crystals, sometimes differing by whole orders of magnitude. The main reason for this is the lack of accurate data for a harmonic coupling coefficient and phonon eigenfrequencies at arbitrary q vectors in the Brillouin zone. Here, a quantum field theory of losses in dielectrics is applied, using results from density functional perturbation theory, to predict from first principles the complex permittivity of metal oxides as functions of frequency and temperature.
Author : Vyacheslav V. Komarov
Publisher : Artech House
ISBN 13 : 160807529X
Total Pages : 186 pages
Book Rating : 4.6/5 (8 download)
Download or read book Handbook of Dielectric and Thermal Properties of Materials at Microwave Frequencies written by Vyacheslav V. Komarov and published by Artech House. This book was released on 2012 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: The application of microwave energy for thermal processing of different materials and substances is a rapidly growing trend in modern science and engineering. In fact, optimal design work involving microwaves is impossible without solid knowledge of the properties of these materials. Heres a practical reference that collects essential data on the dielectric and thermal properties of microwaveable materials, saving you countless hours on projects in a wide range of areas, including microwave design and heating, applied electrodynamics, food science, and medical technology. This unique book provides hard-to-find information on complex dielectric permittivity of media at industrial, scientific, and medical frequencies (430 MHz, 915MHz, 2.45GHz, 5.8 GHz, and 24.125GHz). Written by a leading expert in the field, this authoritative book does an exceptional job at presenting critical data on various materials and explaining what their key characteristics are concerning microwaves.
Author : Grigas
Publisher : Routledge
ISBN 13 : 1351431412
Total Pages : 352 pages
Book Rating : 4.3/5 (514 download)
Download or read book Microwave Dielectric Spectroscopy of Ferroelectrics and Related Materials written by Grigas and published by Routledge. This book was released on 2019-06-21 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this important book, the author summarizes and generalizes the results of 25 years of work in this exciting field, which has been developing extensively within the last few decades. The reader will find discussions of many crystals that were investigated in the microwave region, including low-dimensional and ferroelectric semiconductors, protonic conductors, quasi-one-dimensional H-bonded. and other order-disorder ferroelectrics. This volume is an essential reference for all scientists and graduate students whose interests are connected to the physics of ferroelectrics and related materials; the physics of structural phase transitions; and superionic conductors. It will also be of value to those interested in developing or exploiting microwave measurement techniques.
Author : Bruce D. Sweeny
Publisher :
ISBN 13 :
Total Pages : 44 pages
Book Rating : 4.3/5 (121 download)
Download or read book Measurements of the Dielectric Properties of Wet Snow Using a Microwave Technique written by Bruce D. Sweeny and published by . This book was released on 1974 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: An accurate method of measuring liquid water in snow covers is required to determine the properties of wet snow. The dielectric properties of wet snow must be utilized to adequately measure its liquid water content. In this study the effect of liquid water on the complex dielectric constant of natural snow is determined in the microwave frequency range. Deloor's method for calculating the dielectric constant for mixtures and the results of waveguide experiments on samples of wet snow and glass beads are used to construct a calibration curve relating the measured dielectric loss factor directly to the water content of wet snow. The results are independent of porosity, past history and chemical impurities. A relation between the effective dielectric constant and the porosity and water content is proposed and tested experimentally. The general nature of this relation is described and suggestions are made for the development of a more precise relation. It is concluded that the dielectric constant is a function of porosity and water content only.
Author : Sandra Costanzo
Publisher : BoD – Books on Demand
ISBN 13 : 9535108484
Total Pages : 174 pages
Book Rating : 4.5/5 (351 download)
Download or read book Microwave Materials Characterization written by Sandra Costanzo and published by BoD – Books on Demand. This book was released on 2012-11-14 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microwave Materials Characterization is an edited book discussing recent researches on basic and innovative measurement techniques for the characterization of materials at microwave frequencies, in terms of quantitative determination of their electromagnetic parameters, namely the complex permittivity and permeability. It is divided into two parts: Part 1, including original contributions on advanced techniques for the characterization of dielectric materials, and Part 2, devoted to the microwave characterization of biological tissues.
Author : Joseph Albert Bruder
Publisher :
ISBN 13 :
Total Pages : 240 pages
Book Rating : 4.:/5 (972 download)
Download or read book Measurement of the Complex Dielectric Constant at High Temperatures and Microwave Frequencies written by Joseph Albert Bruder and published by . This book was released on 1967 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : I. B Ibrahim
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (271 download)
Download or read book Non-destructive Measurement of the Complex Permittivity of Dielectric Materials at Microwave Frequencies (Q-band). written by I. B Ibrahim and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : George Dakermandji
Publisher :
ISBN 13 :
Total Pages : 212 pages
Book Rating : 4.:/5 (211 download)
Download or read book A New Method for Measuring the Complex Permittivity of Highly Conductive Dielectric Materials at Microwave Frequencies ... written by George Dakermandji and published by . This book was released on 1976 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : R. D. Hollinger
Publisher :
ISBN 13 :
Total Pages : 8 pages
Book Rating : 4.:/5 (228 download)
Download or read book Free Space Measurements of High Temperature Complex Dielectric Properties at Microwave Frequencies written by R. D. Hollinger and published by . This book was released on 1992 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: A free-space microwave setup has been used to measure the dielectric constant and loss tangent at temperatures up to 850 deg C in the frequency range 8 - 40 GHz for several ceramic materials. The setup and technique are described, and results are presented for both commercially available fired ceramics and a green alumina sample during and after initial binder burnout and firing.
Author :
Publisher :
ISBN 13 :
Total Pages : 1134 pages
Book Rating : 4.:/5 (31 download)
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:
Author : Arthur Robert Von Hippel
Publisher : MIT Press (MA)
ISBN 13 :
Total Pages : 464 pages
Book Rating : 4.3/5 (91 download)
Download or read book Dielectric Materials and Applications written by Arthur Robert Von Hippel and published by MIT Press (MA). This book was released on 1954 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : R.W. Fast
Publisher : Springer Science & Business Media
ISBN 13 : 1461306396
Total Pages : 1793 pages
Book Rating : 4.4/5 (613 download)
Download or read book Advances in Cryogenic Engineering written by R.W. Fast and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 1793 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 1989 Cryogenic Engineering Conference, meeting jointly with the International Cryogenic Materials Conference, was held on the campus of the University of California, Los Angeles from July 24 to 28. Professor T.H.K. Frederking was the conference chairman. The Conference had previously met at U.C.L.A. in 1962 and 1969. A special symposium, "A Half Century of Superfluid Helium," was a significant part of the program of CEC-89. We were especially fortunate to have Professor Jack Allen of the University of St. Andrews, Scotland present at the Conference; his paper, "Early Superfluidity in Cambridge, 1936 to 1939," was a delightful, often humorous account of the early experimental work with superfluid helium. Professors V.L. Ginzburg and J.L. Olesen could not be present for the Symposium, but provided papers which are published in these proceedings. The late Bill Fairbank, responding graciously to a last-minute invitation from Professor Frederking, presented a wonderful account of superfluid research in the United States in the post-war years.
Author :
Publisher :
ISBN 13 :
Total Pages : 922 pages
Book Rating : 4.:/5 (319 download)
Download or read book Bibliography of Scientific and Industrial Reports written by and published by . This book was released on 1970 with total page 922 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Gorur Govinda Raju
Publisher : CRC Press
ISBN 13 : 1498765211
Total Pages : 774 pages
Book Rating : 4.4/5 (987 download)
Download or read book Dielectrics in Electric Fields written by Gorur Govinda Raju and published by CRC Press. This book was released on 2017-07-28 with total page 774 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dielectrics in Electric Fields explores the influence of electric fields on dielectric—i.e., non-conducting or insulating—materials, examining the distinctive behaviors of these materials through well-established principles of physics and engineering. Featuring five new chapters, nearly 200 new figures, and more than 800 new citations, this fully updated and significantly expanded Second Edition: Analyzes inorganic substances with real-life applications in harsh working conditions such as outdoor, nuclear, and space environments Introduces methods for measuring dielectric properties at microwave frequencies, presenting results obtained for specific materials Discusses the application of dielectric theory in allied fields such as corrosion studies, civil engineering, and health sciences Combines in one chapter coverage of electrical breakdown in gases with breakdown in micrometric gaps Offers extensive coverage of electron energy distribution—essential knowledge required for the application of plasma sciences in medical science Delivers a detailed review of breakdown in liquids, along with an overview of electron mobility, providing a clear understanding of breakdown phenomena Explains breakdown in solid dielectrics such as single crystals, polycrystalline and amorphous states, thin films, and powders compressed to form pellets Addresses the latest advances in dielectric theory and research, including cutting-edge nanodielectric materials and their practical applications Blends early classical papers that laid the foundation for much of the dielectric theory with more recent work The author has drawn from more than 55 years of research studies and experience in the areas of high-voltage engineering, power systems, and dielectric materials and systems to supply both aspiring and practicing engineers with a comprehensive, authoritative source for up-to-date information on dielectrics in electric fields.
Author : Witold J. Trett
Publisher :
ISBN 13 :
Total Pages : 86 pages
Book Rating : 4.:/5 (335 download)
Download or read book Techniques for Determination of Complex Permittivity of Dielectric Materials at Microwave Frequencies written by Witold J. Trett and published by . This book was released on 1976 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:
