Permittivity

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In electromagnetism, permittivity is the measure of the resistance that is encountered when forming an electric field in a medium. (Wikipedia.org)






Conferences related to Permittivity

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2020 Joint Conference of the IEEE International Frequency Control Symposium and International Symposium on Applications of Ferroelectrics (IFCS-ISAF)

Ferroelectric materials and applications


2018 18th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM)

ANTEM's technical sessions will provide a comprehensive and well-balanced program and are intended to provide an international forum for the exchange of information on state-of-the-art research in antennas, propagation, and electromagnetic engineering. Authors are invited to submit contributions for review and possible presentation during the symposium on topics of interest to ANTEM. In addition to regularly scheduled sessions for oral presentations, there will be distinguished lecturers and special sessions. There will be a Student Paper Competition as well as a Technical Exhibition.


2018 22nd International Microwave and Radar Conference (MIKON)

Antenna Design, Modeling & MeasurementsMicrowave Devices, Circuits & ComponentsMillimeter-wave & Terahertz TechnologyMicrowave Photonics, Circuits & SystemsRF, VHF & UHF TechnologyEM Field Theory & Numerical TechniquesMicrowave MeasurementsIndustrial, Scientific and Medical ApplicationsWireless Technology & ApplicationsElectromagnetic CompatibilitySpace & Satellite SystemsRadar TechnologyRadar Systems & ApplicationsRadar Signal ProcessingTracking & Data FusionRadar Imaging & Remote SensingNoise, MIMO & UWB RadarsMultistatic & Passive Radar Systems


2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz2018)

Covering terahertz, far infrared and millimeter wave science, technology and applications


2018 48th European Microwave Conference (EuMC)

The Premier European event for the disemination of knowledge about Microwave Technology.The event caters for the seasoned industrial engineer as well as the graduate student. Sessionsand workshops are held on the full range of microwave technology from field theory, throughcomponents and subsystems to systems.

  • 2017 47th European Microwave Conference (EuMC)

    The Premier European event for the disemination of knowledge about Microwave Technology.The event caters for the seasoned industrial engineer as well as the graduate student. Sessions and workshops are held on the full range of microwave technology from field theory, through components and subsystems to systems.

  • 2016 46th European Microwave Conference (EuMC)

    The Premier European event for the disemination of knowledge about Microwave Technology. The event caters for the seasoned industrial engineer as well as the graduate student. Sessions and workshops are held on the full range of microwave technology from field theory, through components and subsystems to systems.

  • 2015 European Microwave Conference (EuMC 2015)

    The 45th European Microwave Conference (EuMC) represents the main event in the European Microwave Week 2015, the largest event in Europe dedicated to microwave components, systems and technology. It is the premier event to present the current status and future trends in the field of microwave, millimeter-wave and terahertz systems and technologies. A broad range of high frequency related topics, from materials and technologies to integrated circuits, systems and applications will be addressed in all their aspects: theory, simulation, design and measurement.The European Microwave Conference provides many opportunities of networking and interaction with international experts in a wide variety of specialties, attracting delegates with academic as well as industrial backgrounds. In addition to scientific papers, contributions on industrial applications are also encouraged, covering the fields of instrumentation, medical, telecommunication, radar, space, automotive and defense systems.

  • 2014 44th European Microwave Conference (EuMC)

    EuMC is the premier European conference in the microwave field, which represent the ideal venue for prospective authors to present the status and trends in microwave and millimetre-wave systems and frequency related topics, from materials and technologies to integrated circuits, systems their aspects: theory, simulation, design and measurement including passive components, design of high frequency and high data rate photonics, highly stable and noiseless microwave wave sources, new linearisation techniques and the impact of new packaging technologies.

  • 2013 European Microwave Conference (EuMC)

    Status and trends in microwave and millimetre -wave systems and technologies. High-frequency related topics, from materials and technologies to integrated circuits, systems and applications in alltheir aspects: theory, simulation, design and measurement including passive components, modelling and design of high frequency and high data rate photonics, highly stable and noiseless microwave and millimetre-wave sources, new linearisation techniques and the impact of new packaging technologies on development

  • 2012 European Microwave Conference (EuMC)

    Microwave and millimeter wave: active/passive devices, antennas, electromagnetics, bio-interaction, circuits, manufacturing and measurement, MEMS, meta-materials, sensor networks, cognitive radio, 4G communications, space technology and applications.

  • 2011 European Microwave Conference (EuMC)

    Status and trends in microwave and millimetre-wave systems and technologies. High-frequency related topics, from materials and technologies to integrated circuits, systems and applications in all their aspects: theory, simulation, design and measurement including passive components, modelling and design of high frequency and high data rate photonics, highly stable and noiseless microwave and millimetre-wave sources, new linearisation techniques and the impact of new packaging technologies on development app

  • 2010 European Microwave Conference (EuMC)

    The European Microwave Conference is the premier forum for presentation of the present status and future trends in the field of microwave, millimetre- and submillimetre-wave systems and technologies.

  • 2009 European Microwave Conference (EuMC)

    The 39th European Microwave Conference (EuMC), is the core of the European Microwave Week 2009, the largest event in Europe dedicated to microwave electronics. It is the premier forum to present the actual status and future trends in the field of materials and technologies to integrated circuits, systems and applications will be addressed in all their aspects: theory, simulation, design and measurement.

  • 2008 European Microwave Conference (EuMC)

    The 38th European Microwave Conference (EuMC) in Amsterdam, The Netherlands, from 27 to 31 October, is the core of the European Microwave Week 2008, the largest event in Europe dedicated to microwave electronics. It is the premier forum to present the actual status and future trends in the field of materials and technologies to integrated circuits, systems and applications will be addressed in all their aspects: theory, simulation, design and measurement.

  • 2007 European Microwave Conference (EuMC)

    Status and trends in microwave and millimetre-wave systems and technologies. High-frequency related topics, from materials and technologies to integrated circuits, systems and applications in all their aspects: theory, simulation, design and measurement including passive components, modelling and design of high frequency and high data rate photonics, highly stable and noiseless microwave and millimetre-wave sources, new linearisation techniques and the impact of new packaging.

  • 2006 European Microwave Conference (EuMC)

  • 2005 European Microwave Conference (EuMC)

  • 2004 European Microwave Conference (EuMC)

  • 2003 European Microwave Conference (EuMC)

  • 1998 28th European Microwave Conference (EuMC)

  • 1997 27th European Microwave Conference (EuMC)


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Periodicals related to Permittivity

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Antennas and Propagation, IEEE Transactions on

Experimental and theoretical advances in antennas including design and development, and in the propagation of electromagnetic waves including scattering, diffraction and interaction with continuous media; and applications pertinent to antennas and propagation, such as remote sensing, applied optics, and millimeter and submillimeter wave techniques.


Antennas and Wireless Propagation Letters, IEEE

IEEE Antennas and Wireless Propagation Letters (AWP Letters) will be devoted to the rapid electronic publication of short manuscripts in the technical areas of Antennas and Wireless Propagation.


Applied Superconductivity, IEEE Transactions on

Contains articles on the applications and other relevant technology. Electronic applications include analog and digital circuits employing thin films and active devices such as Josephson junctions. Power applications include magnet design as well asmotors, generators, and power transmission


Biomedical Circuits and Systems, IEEE Transactions on

The Transactions on Biomedical Circuits and Systems addresses areas at the crossroads of Circuits and Systems and Life Sciences. The main emphasis is on microelectronic issues in a wide range of applications found in life sciences, physical sciences and engineering. The primary goal of the journal is to bridge the unique scientific and technical activities of the Circuits and Systems ...


Biomedical Engineering, IEEE Transactions on

Broad coverage of concepts and methods of the physical and engineering sciences applied in biology and medicine, ranging from formalized mathematical theory through experimental science and technological development to practical clinical applications.


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Most published Xplore authors for Permittivity

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Xplore Articles related to Permittivity

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Research of transmission and reflection method and phase compensation for measuring microwave dielectric properties of solid materials

[{u'author_order': 1, u'affiliation': u'Institute of Electron & Electric Measurement Technology, Shanghai Institute of Measurement and Testing Technology, 1500 Zhang Heng Road, 201203, China', u'full_name': u'Cai Qing'}] 2015 12th IEEE International Conference on Electronic Measurement & Instruments (ICEMI), None

With the development of electronic components towards miniaturization and integration, permittivity, permeability, loss tangent and other microwave parameters have become the characteristics of new microwave materials. The relative complex permittivity and relative magnetic permeability of solid materials are the most important for microwave electrical elements, componentsor antennas design. In this paper we introduce the method of measuring relative complex permittivity ...


Quasi-optics vector measurements of dielectrics from 8 GHz to the THz region

[{u'author_order': 1, u'affiliation': u'AB Millimetre, Paris, France', u'full_name': u'P. Goy'}, {u'author_order': 2, u'full_name': u'S. Caroopen'}, {u'author_order': 3, u'full_name': u'M. Gross'}, {u'author_order': 4, u'full_name': u'J. Mallat'}, {u'author_order': 5, u'full_name': u'J. Tuovinen'}, {u'author_order': 6, u'full_name': u'F. Mattiocco'}] 1998 IEEE Sixth International Conference on Terahertz Electronics Proceedings. THZ 98. (Cat. No.98EX171), None

Dielectric characterisation is made easier when using vector measurements. These measurements give directly the permittivity, since the phase rotation corresponds to a lengthening of the optical path across the sample. Measurements that are most commonly done are measurements between horns (most of the time by taking advantage of refocusing lenses). The comparison between the detected phase and amplitude with or ...


Measurement methods of complex permittivity and permeability of sheet samples in free space in microwave range

[{u'author_order': 1, u'affiliation': u'Institute for Theoretical and Applied Electromagnetics of Russian Academy of Sciences (ITAE RAS) 13, Izhorskaya Str., Moscow, 125412, Russia', u'full_name': u'V. N. Semenenko'}, {u'author_order': 2, u'affiliation': u'Institute for Theoretical and Applied Electromagnetics of Russian Academy of Sciences (ITAE RAS) 13, Izhorskaya Str., Moscow, 125412, Russia', u'full_name': u'V. A. Chistyaev'}] 2010 20th International Crimean Conference "Microwave & Telecommunication Technology", None

A set of measurement methods of complex permittivity and permeability of sheet samples in free space in microwave range is elaborated. The measurements are realized in wide frequency band for comparatively small samples (compared to several wavelengths) with high accuracy due to using of Time Domain and compensation procedure on diaphragmatic horn antennas.


A mixture approach with perturbation technique for microwave characterization of conducting polymers

[{u'author_order': 1, u'affiliation': u'Dept. de Genie Electrique et Genie Informatique, Ecole Polytech., Montreal, Que., Canada', u'full_name': u'Yonghong Hua'}, {u'author_order': 2, u'affiliation': u'Dept. de Genie Electrique et Genie Informatique, Ecole Polytech., Montreal, Que., Canada', u'full_name': u'C. Akyel'}] Proceedings 1995 Canadian Conference on Electrical and Computer Engineering, None

We proposed the idea of a mixture by which the conductivity of the material under test is reduced so that it is possible to employ the cavity perturbation technique. Two simple but more practical mixture formulas for extrapolating the complex permittivity of a separate material through the measurement results of mixture are proposed and both are verified by measurement results. ...


A simple method for accurate loss tangent measurement of dielectrics using a microwave resonant cavity

[{u'author_order': 1, u'affiliation': u'Middlesex Univ., London, UK', u'full_name': u'Daiqing Li'}, {u'author_order': 2, u'full_name': u'C. E. Free'}, {u'author_order': 3, u'full_name': u'K. E. G. Pitt'}, {u'author_order': 4, u'full_name': u'P. G. Barnwell'}] IEEE Microwave and Wireless Components Letters, 2001

A simple yet rigorous method has been developed to enable the loss tangent of dielectrics, having a known relative permittivity, to be accurately measured using a waveguide resonant cavity. The novel method eliminates the need for any physical measurement, either on the cavity or dielectric sample under test. The only electrical parameters that need to be measured are resonant frequencies ...


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Educational Resources on Permittivity

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IEEE-USA E-Books

  • Linear Sampling Method

    The linear sampling method (LSM) is most frequently used qualitative inversion methods, and has been numerically proven to be a fast and reliable method in many situations. This chapter discusses the LSM for the following reasons. The indicator function is easy to calculate and its physical meaning is straightforward. The chapter outlines the LSM, introducing the indicator function and the corresponding linear equation it satisfies. Although the LSM involves solving sets of linear equations when calculating the indicator function, it does not assume any linearizing approximation to the original nonlinear scattering operation, such as the Born approximation. The chapter provides physical interpretation to the mechanism of the LSM. It presents a modified LSM that is based on the multipole expansion of scattered field. The chapter explains the factorization method (FM) that is closely related to the LSM and more importantly provides the proof of the rigor of the LSM.

  • Porous Media, Permittivity, Fluid Permeability of Shales and Seismic Coda

    This chapter discusses the characteristics of porous media and seismic coda waves. One of the important examples of a porous medium is oil shale. One is the permittivity and conductivity of the porous medium as given by Archie's law. The other is the flow of liquid such as oil through the porous medium as given by Darcy's law and "fluid" permeability, which is different from the "magnetic" permeability concept we commonly use in electromagnetic studies. The study of porous media is closely related to the "percolation theory" and the "fractal". The permeability of a porous medium such as shale is a measure of the resistance to the flow of a fluid through the medium. The chapter shows typical seismic waves observed at the receiver. The study of the P‐coda, S‐coda, and Rayleigh‐coda is critical to the understanding of the total seismic radiation.

  • Reconstructing Dielectric Scatterers

    This chapter is devoted to quantitative reconstruction algorithms that are aimed at retrieving permittivities of dielectric scatterers from the knowledge of measured scattering data. It introduces the fundamentals of quantitative reconstruction algorithms and discusses the properties of uniqueness, stability, and nonlinearity. The chapter presents the formulation of the forward method, which is followed by casting the inverse problem to an optimization problem. It reviews noniterative inversion methods, of which there are two types. In particular, one type is Born‐type inversion algorithm and the other type is Rytov type approximations. The chapter also reviews several iterative inversion methods. In particular, for the inversion methods, their implementation steps are presented and their properties and characteristics are commented on. The chapter describes a subspace‐based optimization method (SOM), for which the implementation steps and numerical reconstruction results are presented. It also discusses several important issues in the theories and implementations of quantitative reconstruction algorithms.

  • Propagation in Microcells and Picocells

    This chapter contains sections titled: Introduction Review of Some Propagation Basics Microcell and Picocell Empirical Models Projects Summary References Software Supplied

  • Applications of Parallel¿¿¿coupled Microstrip Lines

    This chapter deals with the detailed design of parallel¿¿¿coupled microstrip structures. The main design element considered in the chapter is the design of a directional coupler. Many of the techniques used in designing circuits with coupled transmission lines are introduced, in particular design of coupled lines beginning with an electrical design, such as the required even and odd¿¿¿mode characteristic impedances, and then realizing the electrical design in physical form. The chapter discusses some special coupler designs with improved performance such as the Lange coupler, shielded parallel¿¿¿coupled microstrips, couplers using dielectric overlay and incorporating lumped capacitors. Thickness effects play only a small part in the accurate design of coupled lines, provided the lines are of thick¿¿¿ or thin¿¿¿film manufacture and the coupling is around ¿¿¿10 dB. The fundamental nature of microstrip line structure is important in relatively simple couplers and significant in circuit applications such as parallel¿¿¿coupled bandpass filters.

  • Integral Equations and Method of Moments

    This chapter discusses the method for determining the current distribution along a straight conductor. It explores the integral equation for an arbitrarily shaped wire antenna for the unknown current along the wire using the Method of Moments (MoM). The unknown current in integral equation is often solved using a point¿¿¿matching technique, which is a MoM technique. The integral equation becomes a powerful analysis tool for an antenna whose shape is expressed by a simple function and, hence, the integrals and derivatives in the kernel, are readily manipulated. However, if the antenna has a complicated structure, the kernel calculations require cumbersome manipulations. To simplify the programming of the solver and reduce the computing time, it is desirable to derive an integral equation with a closed¿¿¿form kernel. Such an integral equation has been derived.

  • Microstrip Design at Low Frequencies

    Microstrip is a particularly useful transmission line medium for implementation in distributed circuit designs at frequencies from below 1 GHz and up to 110 GHz. This chapter deals with some fundamental aspects of the microstrip structure, and the realization of dimensional design parameters for establishing desired electrical characteristics. It is concerned with basic considerations and microstrip synthesis where the substrate is a homogeneous, isotropic dielectric. The aspects discussed are quasi¿¿¿transverse electromagnetic mode (TEM) of propagation, static¿¿¿TEM parameter effective microstrip permittivity, characteristic impedance, and filling factor. Graphical technique is mainly suitable for approximate guidance purposes. Hence, closed formulas are needed for accurate static¿¿¿TEM design calculations. The chapter considers microstrip synthesis using a dielectrically anisotropic substrate. It discusses the effects of finite thickness and manufacturing tolerances, and provides a description of pulse propagation. Finally, recommendations for microstrip design are presented.

  • Electromagnetic Analysis Methods

    This chapter introduces representative electromagnetic analysis methods in body area communications, including the finite-difference time-domain (FDTD) method, finite element method (FEM), and a hybrid method combing the method of moments (MoM) and the FDTD method.

  • Background Theory

    This chapter provides some background theory and introduces notation in preparation for use throughout the remainder of this text. The equations that were devised by James Clerk Maxwell and placed in differential form by Oliver Heaviside and Heinrich Hertz are introduced. Heaviside, and independently Hertz, reduced these 20 equations to the four vector field equations that are essentially used today. For Heaviside, the concepts of fields, symmetry and vector notation were vital. The partial field pairs, satisfy separate sets of Maxwell's equations. The time‐averaged conservation of energy in the electromagnetic field is given by Poynting's theorem. The chapter also summarizes the important concepts of field duality, equivalent sources and image theory. Finally, radiation from elementary sources is investigated, and this allows a description of some basic radiation parameters as well as an introduction to mutual coupling.

  • Basic Performance Characteristics of Wearable Antennas over a Wide Frequency Range

    This chapter describes the basic performance characteristics of wearable antennas for body-centric wireless communications over a wide frequency range. It overviews frequency dependence of the communication channels between 3 MHz and 3 GHz for wearable antennas mounted on the human body. A static human body model which has a posture of standing in free space is employed in order to characterize various frequency channels. The chapter discusses the electric field distributions around the human body, received open voltage, and power transmission efficiency with ideal matching circuits. It describes the influence of a surrounding environment (namely a metal floor and a wall close to the human body) on the electric field distribution and received open voltages around the human body. The chapter demonstrates two different scenarios to apply the basic results to practical situations: a commercialized wall-mounted identification (ID) tag system and a human vital data acquisition system using a dual-mode antenna.



Standards related to Permittivity

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IEEE Recommended Practice for Determining the Peak Spatial-Average Specific Absorption Rate (SAR) in the Human Head from Wireless Communications Devices: Measurement Techniques

To specify protocols for the measurement of the peak spatial-average specific absorption rate (SAR) in a simplified model of the head of users of hand-held radio transceivers used for personal wireless communications services and intended to be operated while held next to the ear. It applies to contemporary and future devices with the same or similar operational characteristics as contemporary ...


IEEE Recommended Practice for Measurements and Computations of Radio Frequency Electromagnetic Fields With Respect to Human Exposure to Such Fields, 100 kHz-300 GHz

Revise and develop specifications for preferred methods for measuring and computing external radiofrequency electromagnetic fields to which persons may be exposed. In addition, the document will specify preferred methods for the measurement and computation of the resulting fields and currents that are induced in bodies of humans exposed to these fields over the frequency range of 100 kHz to 300 ...


IEEE Standard for Safety Levels with Respect to Human Exposure to Radio Frequency Electromagnetic Fields, 3 kHz to 300 GHz

Recommendations are made to protect against established adverse health effects in human beings associated with exposure to electric, magnetic and electromagnetic fields in the frequency range of 3 kHz to 300 GHz. The recommendations are expressed in terms of basic restrictions (BRs) and maximum permissible exposure (MPE) values. The BRs are limits on internal fields, specific absorption rate (SAR), and ...


Recommended Practice for Measurements and Computation of Electric, Magnetic and Electromagnetic Fields With Respect to Human Exposure to Such Fields, 0 - 100 kHz

This recommended practice describes 1) methods for measuring external electric and magnetic fields and contact currents to which persons may be exposed, 2) instrument characteristics and the methods for calibrating such instruments, and 3) methods for computation and the measurement of the resulting fields and currents that are induced in bodies of humans exposed to these fields. This recommended practice ...



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