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Free Space Measurements Of High Temperature Complex Dielectric Properties At Microwave Frequencies
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Book Synopsis Free Space Measurements of High Temperature Complex Dielectric Properties at Microwave Frequencies by : R. D. Hollinger
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.
Book Synopsis Microwave Materials and Applications by : Mailadil T. Sebastian
Download or read book Microwave Materials and Applications written by Mailadil T. Sebastian and published by John Wiley & Sons. This book was released on 2017-03-02 with total page 1000 pages. Available in PDF, EPUB and Kindle. Book excerpt: The recent rapid progress in wireless telecommunication, including the Internet of Things, 5th generation wireless systems, satellite broadcasting, and intelligent transport systems has increased the need for low-loss dielectric materials and modern fabrication techniques. These materials have excellent electrical, dielectric, and thermal properties and have enormous potential, especially in wireless communication, flexible electronics, and printed electronics. Microwave Materials and Applications discusses the methods commonly employed for measuring microwave dielectric properties, the various attempts reported to solve problems of materials chemistry and crystal structure, doping, substitution, and composite formation, highlighting the processing techniques, morphology influences, and applications of microwave materials whilst summarizing many of the recent technical research accomplishments in the area of microwave dielectrics and applications Chapters examine: Oxide ceramics for dielectric resonators and substrates HTCC, LTCC and ULTCC tapes for substrates Polymer ceramic composites for printed circuit boards Elastomer-ceramic composites for flexible electronics Dielectric inks EMI shielding materials Microwave ferrites A comprehensive Appendix presents the fundamental properties for more than 4000 low-loss dielectric ceramics, their composition, crystal structure, and their microwave dielectric properties. Microwave Materials and Applications presents a comprehensive view of all aspects of microwave materials and applications, making it useful for scientists, industrialists, engineers, and students working on current and emerging applications of wireless communications and consumer electronics.
Book Synopsis Handbook of Dielectric and Thermal Properties of Materials at Microwave Frequencies by : Vyacheslav V. Komarov
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.
Book Synopsis Microwave Electronics by : L. F. Chen
Download or read book Microwave Electronics written by L. F. Chen and published by John Wiley & Sons. This book was released on 2004-11-19 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt: The development of high speed, high frequency circuits and systems requires an understanding of the properties of materials functioning at the microwave level. This comprehensive reference sets out to address this requirement by providing guidance on the development of suitable measurement methodologies tailored for a variety of materials and application systems. Bringing together coverage of a broad range of techniques in one publication for the first time, this book: Provides a comprehensive introduction to microwave theory and microwave measurement techniques. Examines every aspect of microwave material properties, circuit design and applications. Presents materials property characterisation methods along with a discussion of the underlying theory. Outlines the importance of microwave absorbers in the reduction in noise levels in microwave circuits and their importance within defence industry applications. Relates each measurement technique to its application across the fields of microwave engineering, high-speed electronics, remote sensing and the physical sciences. This book will appeal to practising engineers and technicians working in the areas of RF, microwaves, communications, solid-state devices and radar. Senior students, researchers in microwave engineering and microelectronics and material scientists will also find this book a very useful reference.
Book Synopsis Temperature and Frequency Dependence of Complex Permittivity in Metal Oxide Dielectrics: Theory, Modelling and Measurement by : Jonathan Breeze
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.
Book Synopsis Advances in Microwave and Radio Frequency Processing by : M. Willert-Porada
Download or read book Advances in Microwave and Radio Frequency Processing written by M. Willert-Porada and published by Springer Science & Business Media. This book was released on 2007-05-17 with total page 788 pages. Available in PDF, EPUB and Kindle. Book excerpt: Prometheus brought fire to mankind Arthur R. von Hippel “Dielectrics and Waves”, 1954 Our contribution? There are only few areas of research and development of a comparable scientific and technological extension as microwave and high frequency processing. “Pr- essing” means not only application of radiation of 300 MHz to 300 GHz f- quency to synthesis, heating or ionisation of matter but also generation, transm- sion and detection of microwave and radio frequency radiation. Microwave and high frequency sources positioned in the orbit are the foun- tion of modern satellite telecommunication systems, gyrotron tubes being pr- ently developed in different countries all over the world will most probably be the major devices to open up a new era of energy supply to mankind be means of - sion plasma. Although initiated by military purposes during the Second World War (RADAR, Radio Detection and Ranging), microwave and high frequency utilisation has spread over almost every important aspect of normal day life since than, from individual mobile phones and kitchen microwave ovens to industrial food processing, production of composites as sustainable building materials, green chemistry, medical applications and finally infrastructure installations like GPS and Galileo, to name only few examples. These different areas of microwave and high frequency radiation application can not be unified within one group of scientists and technologists. There are s- eral distinguished communities active e.g., in the area of telecommunication s- tems, strong microwaves for fusion plasma or plasma based materials processing.
Book Synopsis Measurements of the Dielectric Properties of Wet Snow Using a Microwave Technique by : Bruce D. Sweeny
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.
Book Synopsis Low Dielectric Constant Thin Film High Frequency Characterization Technique by : Ge Song
Download or read book Low Dielectric Constant Thin Film High Frequency Characterization Technique written by Ge Song and published by . This book was released on 2001 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Microwaves, Millimeter Wave and Terahertz Liquid Crystals by : Anyong Qing
Download or read book Microwaves, Millimeter Wave and Terahertz Liquid Crystals written by Anyong Qing and published by Springer Nature. This book was released on with total page 283 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Encyclopedia of Remote Sensing by : Eni Njoku
Download or read book Encyclopedia of Remote Sensing written by Eni Njoku and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This first encyclopaedic reference on remote sensing describes the concepts, techniques, instrumentation, data analysis, interpretation, and applications of remote sensing, both airborne and space-based. Scientists, engineers, academics, and students can quickly access answers to their reference questions and direction for further study.
Book Synopsis Applied Measurement Systems by : Md. Zahurul Haq
Download or read book Applied Measurement Systems written by Md. Zahurul Haq and published by BoD – Books on Demand. This book was released on 2012-02-24 with total page 406 pages. Available in PDF, EPUB and Kindle. Book excerpt: Measurement is a multidisciplinary experimental science. Measurement systems synergistically blend science, engineering and statistical methods to provide fundamental data for research, design and development, control of processes and operations, and facilitate safe and economic performance of systems. In recent years, measuring techniques have expanded rapidly and gained maturity, through extensive research activities and hardware advancements. With individual chapters authored by eminent professionals in their respective topics, Applied Measurement Systems attempts to provide a comprehensive presentation and in-depth guidance on some of the key applied and advanced topics in measurements for scientists, engineers and educators.
Book Synopsis Electromagnetic Nondestructive Evaluation XXII by : A. Tamburrino
Download or read book Electromagnetic Nondestructive Evaluation XXII written by A. Tamburrino and published by IOS Press. This book was released on 2019-12-11 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of electromagnetic nondestructive evaluation has grown significantly in recent years. This valuable technique enables the assessment of objects by observing the electromagnetic response to electric currents and/or magnetic fields introduced within them. This book presents the proceedings of the 23rd International Workshop on Electromagnetic Nondestructive Evaluation (ENDE2018), held in Detroit, Michigan, USA, from 9 - 13 September 2018. The workshop provides an international forum for the exchange of information on state-of-the-art technologies and development in electromagnetic nondestructive evaluation, and the 19 papers presented here cover topics including sensors; modeling; signal processing; inverse problems; materials state awareness and characterization; damage diagnosis and prognosis; biomedical applications; and innovative industrial applications of eNDE. Providing a comprehensive overview of current theoretical and applied research into electromagnetic nondestructive evaluation (eNDE) methods, the book will be of interest to all those whose work involves the non-destructive evaluation of objects, whatever their field.
Book Synopsis Planar Microwave Sensors by : Ferran Martín
Download or read book Planar Microwave Sensors written by Ferran Martín and published by John Wiley & Sons. This book was released on 2022-09-27 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprehensive resource detailing the latest advances in microwave and wireless sensors implemented in planar technology Planar Microwave Sensors is an authoritative resource on the subject, discussing the main relevant sensing strategies, working principles, and applications on the basis of the authors’ own experience and background, while also highlighting the most relevant contributions to the topic reported by international research groups. The authors provide an overview of planar microwave sensors grouped by chapters according to their working principle. In each chapter, the working principle is explained in detail and the specific sensor design strategies are discussed, including validation examples at both simulation and experimental level. The most suited applications in each case are also reported. The necessary theory and analysis for sensor design are further provided, with special emphasis on performance improvement (i.e., sensitivity and resolution optimization, dynamic range, etc.). Lastly, the work covers a number of applications, from material characterization to biosensing, including motion control sensors, microfluidic sensors, industrial sensors, and more. Sample topics covered in the work include: Non-resonant and resonant sensors, reflective-mode and transmission-mode sensors, single-ended and differential sensors, and contact and contactless sensors Design guidelines for sensor performance optimization and analytical methods to retrieve the variables of interest from the measured sensor responses Radiofrequency identification (RFID) sensor types, prospective applications, and materials/technologies towards “green sensors” implementation Comparisons between different technologies for sensing and the advantages and limitations of microwave sensors, particularly planar sensors Engineers and qualified professionals involved in sensor technologies, along with undergraduate and graduate students in related programs of study, can harness the valuable information inside Planar Microwave Sensors to gain complete foundational knowledge on the subject and stay up to date on the latest research and developments in the field.
Book Synopsis Microwave Processing of Materials by : National Research Council
Download or read book Microwave Processing of Materials written by National Research Council and published by National Academies Press. This book was released on 1994-02-01 with total page 165 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microwaves can be effectively used in the processing of industrial materials under a wide range of conditions. However, microwave processing is complex and multidisciplinary in nature, and a high degree of technical knowledge is needed to determine how, when, and where the technology can be most profitably utilized. This book assesses the potential of microwave technology for industrial applications, reviews the latest equipment and processing methods, and identifies both the gaps in understanding of microwave processing technology and the promising development opportunities that take advantage of this new technology's unique performance characteristics.
Book Synopsis Dielectric Material by : Marius Alexandru Silaghi
Download or read book Dielectric Material written by Marius Alexandru Silaghi and published by BoD – Books on Demand. This book was released on 2012-10-03 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book attempts to bring together the theory and practice of dielectric materials for different kind of industrial applications. Fragmented information on dielectric theory and properties of materials, design of equipment and state of the art in applications relevant to the manufacturing industry should be collated and updated and presented as a single reference volume. In this book relevant and useful information is presented in the quoted literature and covered by our key patent applications.
Book Synopsis Microwave and Radio Frequency Heating in Food and Beverages by : Tatiana Koutchma
Download or read book Microwave and Radio Frequency Heating in Food and Beverages written by Tatiana Koutchma and published by Academic Press. This book was released on 2022-10-06 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microwave and Radio Frequency Heating in Food and Beverages discusses advanced heating techniques based on electromagnetic and electro-technologies, including radiative or microwave (MW) dielectric heating, radio-frequency (RF) or capacitive dielectric heating, infrared (IR) heating, ohmic and magnetic induction heating. Unlike conventional systems where heat energy is transferred from a hot medium to a cooler product resulting in large temperature gradients, electro-heating involves the transfer of electromagnetic energy directly into the product, initiating volumetric heating due to frictional interaction between water molecules and charged ions (i.e., heat is generated within the product). Provides basic principles and mechanisms of electromagnetic heating and microwave Explores microwave and radio-frequency (RF) effects on quality and nutrients in foods Presents the commercial applications of microwave and RF heating in the pasteurization and sterilization of foods and beverages
Book Synopsis Dielectric Constant and Loss Tangent Measurement of High-temperature Electromagnetic Window Materials by : Harold Lane Bassett
Download or read book Dielectric Constant and Loss Tangent Measurement of High-temperature Electromagnetic Window Materials written by Harold Lane Bassett and published by . This book was released on 1969 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: The research performed in the development of a new technique for measuring the complex permittivity of electromagnetic window materials from ambient temperatures to 4500F is described in this report. The measurement technique employs a focused, free-space microwave bridge and a rotating disk sample heated on one side by oxy-acetylene flames. Provisions were made for eliminating flame from the microwave measurement area. Data are included to substantiate the feasibility of the measuring technique. Surface temperatures of the sample were measured by optical pyrometers, and internal temperatures were determined by embedded thermocouples. Dynamic measurements were made of the sample insertion phase and insertion loss. A transient heat conduction analysis was used to determine temperature profiles within the sample, and the electrical transmission data were correlated with the temperature profiles to give dielectric constant and loss tangent as functions of temperature. The relative dielectric constant versus temperature function of high purity slip-cast fused silica (85 percent density) is a segmented straight line. (Author).
