The Temperature Dependance Of The Complex Permittivity Of Dielectric Materials Measured At Microwave Frequency

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Temperature and Frequency Dependence of Complex Permittivity in Metal Oxide Dielectrics: Theory, Modelling and Measurement

Author : Jonathan Breeze
Publisher : Springer
ISBN 13 : 3319445472
Total Pages : 180 pages
Book Rating : 4.3/5 (194 download)

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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.

Dielectric Phenomena in Solids

Author : Kwan Chi Kao
Publisher : Elsevier
ISBN 13 : 0080470165
Total Pages : 601 pages
Book Rating : 4.0/5 (84 download)

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Book Synopsis Dielectric Phenomena in Solids by : Kwan Chi Kao

Download or read book Dielectric Phenomena in Solids written by Kwan Chi Kao and published by Elsevier. This book was released on 2004-05-11 with total page 601 pages. Available in PDF, EPUB and Kindle. Book excerpt: In general, a dielectric is considered as a non-conducting or insulating material (such as a ceramic or polymer used to manufacture a microelectronic device). This book describes the laws governing all dielectric phenomena.·A unified approach is used in describing each of the dielectric phenomena, with the aim of answering "what?", "how?" and "why" for the occurrence of each phenomenon;·Coverage unavailable in other books on ferroelectrics, piezoelectrics, pyroelectrics, electro-optic processes, and electrets;·Theoretical analyses are general and broadly applicable;·Mathematics is simplified and emphasis is placed on the physical insight of the mechanisms responsible for the phenomena;·Truly comprehensive coverage not available in the current literature.

Microwave Materials and Applications

Author : Mailadil T. Sebastian
Publisher : John Wiley & Sons
ISBN 13 : 1119208564
Total Pages : 997 pages
Book Rating : 4.1/5 (192 download)

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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 997 pages. Available in PDF, EPUB and Kindle. Book excerpt: Die jüngsten Fortschritte im Bereich der drahtlosen Telekommunikation und dem Internet der Dinge sorgen bei drahtlosen Systemen, beim Satellitenfernsehen und bei intelligenten Transportsystemen der 5. Generation für eine höhere Nachfrage nach dielektrischen Materialien und modernen Fertigungstechniken. Diese Materialien bieten ausgezeichnete elektrische, dielektrische und thermische Eigenschaften und verfügen über enormes Potenzial, vor allem bei der drahtlosen Kommunikation, bei flexibler Elektronik und gedruckter Elektronik. Microwave Materials and Applications erläutert die herkömmlichen Methoden zur Messung der dielektrischen Eigenschaften im Mikrowellenbereich, die verschiedenen Ansätze zur Lösung von Problemen der Materialchemie und von Kristallstrukturen, in den Bereichen Doping, Substitution und Aufbau von Verbundwerkstoffen. Besonderer Schwerpunkt liegt auf Verarbeitungstechniken, Einflüssen der Morphologie und der Anwendung von Materialien in der Mikrowellentechnik. Gleichzeitig werden viele der jüngsten Forschungserkenntnisse bei Mikrowellen-Dielektrika und -Anwendungen zusammengefasst. Die verschiedenen Kapitel untersuchen: Oxidkeramiken für dielektrische Resonatoren und Substrate, HTCC-, LTCC- und ULTCC-Bänder für Substrate, Polymer-Keramik-Verbundstoffe für Leiterplatten, Elastomer-Keramik-Verbundstoffe für flexible Elektronik, dielektrische Tinten, Materialien für die EMV-Abschirmung, Mikrowellen-Ferrite. Ein umfassender Anhang präsentiert die grundlegenden Eigenschaften von mehr als 4000 verlustarmen dielektrischen Keramiken, deren Zusammensetzung, kristalline Struktur und dielektrischen Eigenschaften für Mikrowellenanwendungen. Microwave Materials and Applications wirft einen Blick auf sämtliche Aspekte von Mikrowellenmaterialien und -anwendungen, ein nützliches Handbuch für Wissenschaftler, Unternehmen, Ingenieure und Studenten, die sich mit heutigen und neuen Anwendungen in den Bereichen drahtlose Kommunikation und Unterhaltungselektronik beschäftigen.

Temperature- and Time-Dependent Dielectric Measurements and Modelling on Curing of Polymer Composites

Author : Prastiyanto, Dhidik
Publisher : KIT Scientific Publishing
ISBN 13 : 3731504243
Total Pages : 204 pages
Book Rating : 4.7/5 (315 download)

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Book Synopsis Temperature- and Time-Dependent Dielectric Measurements and Modelling on Curing of Polymer Composites by : Prastiyanto, Dhidik

Download or read book Temperature- and Time-Dependent Dielectric Measurements and Modelling on Curing of Polymer Composites written by Prastiyanto, Dhidik and published by KIT Scientific Publishing. This book was released on 2016-03-15 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book a test set for dielectric measurements at 2.45 GHz during curing of polymer composites is developed. Fast reconstruction is solved using a neural network algorithm. Modeling of the curing process at 2.45 GHz using both dielectric constant and dielectric loss factor results in more accurate model compared to low frequency modelling that only uses the loss factor. Effect of various hardeners and different amount of filler is investigated.

Developments in Dielectric Materials and Electronic Devices

Author : K. M. Nair
Publisher : John Wiley & Sons
ISBN 13 : 1118408195
Total Pages : 416 pages
Book Rating : 4.1/5 (184 download)

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Book Synopsis Developments in Dielectric Materials and Electronic Devices by : K. M. Nair

Download or read book Developments in Dielectric Materials and Electronic Devices written by K. M. Nair and published by John Wiley & Sons. This book was released on 2012-04-11 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: Papers in this volume include topics such as materials synthesis and processing; relaxors; novel compositions; material design; materials for multilayer electronic devices; processing-microstructure-property relationship; applications; environmental issues; and economic/cost analysis of tomorrow's electronic devices. Includes 38 papers.

Scientific and Technical Aerospace Reports

Author :
Publisher :
ISBN 13 :
Total Pages : 1134 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 1989 with total page 1134 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Electromagnetic Materials - Proceedings Of The Symposium F

Author : Hock Lim
Publisher : World Scientific
ISBN 13 : 9814485969
Total Pages : 285 pages
Book Rating : 4.8/5 (144 download)

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Book Synopsis Electromagnetic Materials - Proceedings Of The Symposium F by : Hock Lim

Download or read book Electromagnetic Materials - Proceedings Of The Symposium F written by Hock Lim and published by World Scientific. This book was released on 2003-12-04 with total page 285 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electromagnetic materials have both civilian and defence applications, such as novel antenna designs and protection against high power transients in densely packed printed circuits. For certain applications, the materials may be required to have special frequency response or polarization response to meet the component or system specifications. An in-depth understanding of the responses of materials to electromagnetic waves may even enable us to design and fabricate materials with properties not found in nature.This book constitutes the proceedings of the Symposium on Electromagnetic Materials, which provided a forum for scientists and engineers to report the latest research findings, to exchange ideas and information, and to establish research links.

Handbook of Dielectric and Thermal Properties of Materials at Microwave Frequencies

Author : Vyacheslav V. Komarov
Publisher : Artech House
ISBN 13 : 160807529X
Total Pages : 186 pages
Book Rating : 4.6/5 (8 download)

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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.

Dielectric Materials for Wireless Communication

Author : Mailadil T. Sebastian
Publisher : Elsevier
ISBN 13 : 0080560504
Total Pages : 689 pages
Book Rating : 4.0/5 (85 download)

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Book Synopsis Dielectric Materials for Wireless Communication by : Mailadil T. Sebastian

Download or read book Dielectric Materials for Wireless Communication written by Mailadil T. Sebastian and published by Elsevier. This book was released on 2010-07-07 with total page 689 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microwave dielectric materials play a key role in our global society with a wide range of applications, from terrestrial and satellite communication including software radio, GPS, and DBS TV to environmental monitoring via satellite. A small ceramic component made from a dielectric material is fundamental to the operation of filters and oscillators in several microwave systems. In microwave communications, dielectric resonator filters are used to discriminate between wanted and unwanted signal frequencies in the transmitted and received signal. When the wanted frequency is extracted and detected, it is necessary to maintain a strong signal. For clarity it is also critical that the wanted signal frequencies are not affected by seasonal temperature changes. In order to meet the specifications of current and future systems, improved or new microwave components based on dedicated dielectric materials and new designs are required. The recent progress in microwave telecommunication, satellite broadcasting and intelligent transport systems (ITS) has resulted in an increased demand for Dielectric Resonators (DRs). With the recent revolution in mobile phone and satellite communication systems using microwaves as the propagation media, the research and development in the field of device miniaturization has been a major challenge in contemporary Materials Science. In a mobile phone communication, the message is sent from a phone to the nearest base station, and then on via a series of base stations to the other phone. At the heart of each base station is the combiner/filter unit which has the job of receiving the messages, keeping them separate, amplifying the signals and sending then onto the next base station. For such a microwave circuit to work, part of it needs to resonate at the specific working frequency. The frequency determining component (resonator) used in such a high frequency device must satisfy certain criteria. The three important characteristics required for a dielectric resonator are (a) a high dielectric constant which facilitates miniaturization (b) a high quality factor (Qxf) which improves the signal-to-noise ratio, (c) a low temperature coefficient of the resonant frequency which determines the stability of the transmitted frequency. During the past 25 years scientists the world over have developed a large number of new materials (about 3000) or improved the properties of known materials. About 5000 papers have been published and more than 1000 patents filed in the area of dielectric resonators and related technologies. This book brings the data and science of these several useful materials together, which will be of immense benefit to researchers and engineers the world over. The topics covered in the book includes factors affecting the dielectric properties, measurement of dielectric properties, important low loss dielectric material systems such as perovskites, tungsten bronze type materials, materials in BaO-TiO2 system, (Zr,Sn)TiO4, alumina, rutile, AnBn-1O3n type materials, LTCC, ceramic-polymer composites etc. The book also has a data table listing all reported low loss dielectric materials with properties and references arranged in the order of increasing dielectric constant. - Collects together in one source data on all new materials used in wireless communication - Includes tabulated properties of all reported low loss dielectric materials - In-depth treatment of dielectric resonator materials

Dielectrics in Electric Fields

Author : Gorur Govinda Raju
Publisher : CRC Press
ISBN 13 : 1498765211
Total Pages : 774 pages
Book Rating : 4.4/5 (987 download)

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Book Synopsis Dielectrics in Electric Fields by : Gorur Govinda Raju

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.

Microwave Electronics

Author : L. F. Chen
Publisher : John Wiley & Sons
ISBN 13 : 0470020458
Total Pages : 552 pages
Book Rating : 4.4/5 (7 download)

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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.

Electromagnetic Materials and Devices

Author : Man-Gui Han
Publisher : BoD – Books on Demand
ISBN 13 : 1789852269
Total Pages : 364 pages
Book Rating : 4.7/5 (898 download)

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Book Synopsis Electromagnetic Materials and Devices by : Man-Gui Han

Download or read book Electromagnetic Materials and Devices written by Man-Gui Han and published by BoD – Books on Demand. This book was released on 2020-01-22 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electromagnetic materials can be widely found in daily life, especially in electronic devices. The high-frequency properties (permittivity or permeability) of these materials strongly depend on structure, composition, shape, and orientation. Therefore, this book intends to present readers with advances not only in materials science (including metamaterials), but also in measurements and novel functional applications that demand the special properties of electromagnetic materials.

Handbook of Ultra-Wideband Short-Range Sensing

Author : Jürgen Sachs
Publisher : John Wiley & Sons
ISBN 13 : 3527651837
Total Pages : 802 pages
Book Rating : 4.5/5 (276 download)

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Book Synopsis Handbook of Ultra-Wideband Short-Range Sensing by : Jürgen Sachs

Download or read book Handbook of Ultra-Wideband Short-Range Sensing written by Jürgen Sachs and published by John Wiley & Sons. This book was released on 2013-01-15 with total page 802 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ranging from the theoretical basis of UWB sensors via implementation issues to applications, this much-needed book bridges the gap between designers and appliers working in civil engineering, biotechnology, medical engineering, robotic, mechanical engineering, safety and homeland security. From the contents: * History * Signal and systems in time and frequency domain * Propagation of electromagnetic waves (in frequency and time domain) * UWB-Principles * UWB-antennas and applicators * Data processing * Applications

Broadband Reflectometry for Enhanced Diagnostics and Monitoring Applications

Author : Andrea Cataldo
Publisher : Springer Science & Business Media
ISBN 13 : 3642202330
Total Pages : 159 pages
Book Rating : 4.6/5 (422 download)

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Book Synopsis Broadband Reflectometry for Enhanced Diagnostics and Monitoring Applications by : Andrea Cataldo

Download or read book Broadband Reflectometry for Enhanced Diagnostics and Monitoring Applications written by Andrea Cataldo and published by Springer Science & Business Media. This book was released on 2011-03-31 with total page 159 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is dedicated to the adoption of broadband microwave reflectometry (BMR)-based methods for diagnostics and monitoring applications. This electromagnetic technique has established as a powerful tool for monitoring purposes; in fact, it can balance several contrasting requirements, such as the versatility of the system, low implementation cost, real-time response, possibility of remote control, reliability, and adequate measurement accuracy. Starting from an extensive survey of the state of the art and from a clear and concise overview of the theoretical background, throughout the book, the different approaches of BMR are considered (i.e., time domain reflectometry - TDR, frequency domain reflectometry - FDR, and the TDR/FDR combined approach) and several applications are thoroughly investigated. The applications considered herein are very diverse from each other and cover different fields. In all the described procedures and methods, the ultimate goal is to endow them with a significant performance enhancement in terms of measurement accuracy, low cost, versatility, and practical implementation possibility, so as to unlock the strong potential of BMR.

Microwave Processing of Foods: Challenges, Advances and Prospects

Author : Anubhav Pratap-Singh
Publisher : Springer Nature
ISBN 13 : 3031516133
Total Pages : 738 pages
Book Rating : 4.0/5 (315 download)

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Book Synopsis Microwave Processing of Foods: Challenges, Advances and Prospects by : Anubhav Pratap-Singh

Download or read book Microwave Processing of Foods: Challenges, Advances and Prospects written by Anubhav Pratap-Singh and published by Springer Nature. This book was released on with total page 738 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Ground Penetrating Radar Theory and Applications

Author : Harry M. Jol
Publisher : Elsevier
ISBN 13 : 0080951848
Total Pages : 545 pages
Book Rating : 4.0/5 (89 download)

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Book Synopsis Ground Penetrating Radar Theory and Applications by : Harry M. Jol

Download or read book Ground Penetrating Radar Theory and Applications written by Harry M. Jol and published by Elsevier. This book was released on 2008-12-08 with total page 545 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ground-penetrating radar (GPR) is a rapidly developing field that has seen tremendous progress over the past 15 years. The development of GPR spans aspects of geophysical science, technology, and a wide range of scientific and engineering applications. It is the breadth of applications that has made GPR such a valuable tool in the geophysical consulting and geotechnical engineering industries, has lead to its rapid development, and inspired new areas of research in academia. The topic of GPR has gone from not even being mentioned in geophysical texts ten years ago to being the focus of hundreds of research papers and special issues of journals dedicated to the topic. The explosion of primary literature devoted to GPR technology, theory and applications, has lead to a strong demand for an up-to-date synthesis and overview of this rapidly developing field. Because there are specifics in the utilization of GPR for different applications, a review of the current state of development of the applications along with the fundamental theory is required. This book will provide sufficient detail to allow both practitioners and newcomers to the area of GPR to use it as a handbook and primary research reference.*Review of GPR theory and applications by leaders in the field*Up-to-date information and references*Effective handbook and primary research reference for both experienced practitioners and newcomers

Dielectric Spectroscopy of Electronic Materials

Author : Yuriy Poplavko
Publisher : Woodhead Publishing
ISBN 13 : 0128236442
Total Pages : 377 pages
Book Rating : 4.1/5 (282 download)

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Book Synopsis Dielectric Spectroscopy of Electronic Materials by : Yuriy Poplavko

Download or read book Dielectric Spectroscopy of Electronic Materials written by Yuriy Poplavko and published by Woodhead Publishing. This book was released on 2021-07-06 with total page 377 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dielectric Spectroscopy of Electronic Materials: Applied Physics of Dielectrics incorporates the results of four decades of research and applications of dielectric spectroscopy for solids, mostly for the investigation of materials used in electronics. The book differs from others by more detailed analysis of the features of dielectric spectra conditioned by specific mechanisms of electrical polarization and conductivity. Some original methods are presented in the simulation of frequency distributions (relaxers and oscillators), with methods proposed for various ferroelectrics frequency-temperature dielectric spectra. Also described are original methods for ferroelectrics on microwaves investigation, including the features of thin films study. The book is not burdened by complex mathematical proofs and should help readers quickly understand how to apply dielectric spectroscopy methods to their own research problems. More advanced readers may also find this book valuable as a review of the key concepts and latest advances on the topics presented. - Introduces critical material characterization techniques by an expert with more than 40 years of experience in dielectric spectroscopy - Reviews advances in dielectric spectroscopy methods to enable advances such as the miniaturization of electronics at the nanoscale - Provides an overview of polarization mechanisms utilizing different models (i.e., oscillator and relaxation)