Permittivity

View this topic in
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

Back to Top

2020 IEEE International Conference on Plasma Science (ICOPS)

IEEE International Conference on Plasma Science (ICOPS) is an annual conference coordinated by the Plasma Science and Application Committee (PSAC) of the IEEE Nuclear & Plasma Sciences Society.


2020 IEEE International Instrumentation and Measurement Technology Conference (I2MTC)

The Conference focuses on all aspects of instrumentation and measurement science andtechnology research development and applications. The list of program topics includes but isnot limited to: Measurement Science & Education, Measurement Systems, Measurement DataAcquisition, Measurements of Physical Quantities, and Measurement Applications.


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

Ferroelectric materials and applications


2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)

Science, technology and applications spanning the millimeter-waves, terahertz and infrared spectral regions


2019 IEEE 69th Electronic Components and Technology Conference (ECTC)

premier components, packaging and technology conference


More Conferences

Periodicals related to Permittivity

Back to Top

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.


More Periodicals


Xplore Articles related to Permittivity

Back to Top

Automatic Measurement of Amplitude and Phase of Microwave Signals Over Broad Frequence Range

[{u'author_order': 1, u'full_name': u'Marian L Majewski'}] 1984 International Symposium on Electromagnetic Compatibility, 1984

An automatic microwave vector-voltmeter system for accurate characterization of microwave signal in terms of its amplitude and phase operating over broad frequency range is described. Basic principles of the system operation along with the particularities related to both hardware and software practical solutions are also discussed. The results presented in the paper show that the accuracy of the measured signals ...


Reply to Comments on “A Novel Technique for Measuring One-Dimensional Permittivity Profiles Using a Simple Non-Commensurate Planar Structure”

[{u'author_order': 1, u'full_name': u'Alessandro Ocera'}, {u'author_order': 2, u'affiliation': u'RF Microtech srl, Perugia, Italy', u'full_name': u'Elisa Fratticcioli'}, {u'author_order': 3, u'affiliation': u'DIEI, University of Perugia, Perugia, Italy', u'full_name': u'Marco Dionigi'}, {u'author_order': 4, u'affiliation': u'DIEI, University of Perugia, Perugia, Italy', u'full_name': u'Roberto Sorrentino'}] IEEE Microwave and Wireless Components Letters, 2012

This paper is reply to comment on "A Novel Technique for Measuring One- dimensional Permittivity Profiles Using a Simple Non-commensurate Planar Structure”. Commentator's claim that formula (1) of our paper is an approximate one and is valid only for low permittivity materials is correct. The error due to using formula (1) instead of the rigorous formula (6) shown by Ogunlade ...


Characterization of SU-8 using terahertz time-domain spectroscopy

[{u'author_order': 1, u'affiliation': u'Electroscience Laboratory, The Ohio State University, Columbus, USA', u'full_name': u'Nima Ghalichechian'}, {u'author_order': 2, u'affiliation': u'Electroscience Laboratory, The Ohio State University, Columbus, USA', u'full_name': u'Jonathan P. Doane'}, {u'author_order': 3, u'affiliation': u'DMC Research Center, Samsung Electronics, Suwon, South Korea', u'full_name': u'Wonbin Hong'}, {u'author_order': 4, u'affiliation': u'Electroscience Laboratory, The Ohio State University, Columbus, USA', u'full_name': u'Kubilay Sertel'}, {u'author_order': 5, u'affiliation': u'Electroscience Laboratory, The Ohio State University, Columbus, USA', u'full_name': u'John L. Volakis'}] 2013 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium), 2013

Summary form only given. Among available materials for millimeter wave applications, SU-8 is one of the best choices due to its low dielectric losses and fine resolutions of UV-lithographic processing techniques. Of importance is that SU-8 can allow the generation of thick material layers (on the order of 500μm), making SU-8 very attractive for monolithic integration of mmWave on-chip interconnects ...


Metamaterial substrate for measurement of complex permittivity of liquids using open-ended coaxial-line probes

[{u'author_order': 1, u'affiliation': u'Institute for Radiophysics and Electronics, NASU 12, Ac. Proskura Str., Kharkov, 61085, Ukraine', u'authorUrl': u'https://ieeexplore.ieee.org/author/37345402300', u'full_name': u'V. K. Ivanov', u'id': 37345402300}, {u'author_order': 2, u'affiliation': u'Institute for Radiophysics and Electronics, NASU 12, Ac. Proskura Str., Kharkov, 61085, Ukraine', u'authorUrl': u'https://ieeexplore.ieee.org/author/37871051300', u'full_name': u'O. O. Silin', u'id': 37871051300}, {u'author_order': 3, u'affiliation': u'Institute for Radiophysics and Electronics, NASU 12, Ac. Proskura Str., Kharkov, 61085, Ukraine', u'authorUrl': u'https://ieeexplore.ieee.org/author/37871005500', u'full_name': u'O. M. Stadnyk', u'id': 37871005500}] 2011 21st International Crimean Conference "Microwave & Telecommunication Technology", 2011

The new technique for determination of complex permittivity of a liquid media by open-ended coaxial line probes, based on using metamaterial substrate with known characteristics, is proposed. Following this technique, determination of wide variations of complex permittivity of liquid from only amplitude measurements of a reflection coefficient in a finite frequency range in combination with fitting optimal thickness of a ...


Determination of the Complex Permittivity of Vermiculite using a Microstrip Line

[{u'author_order': 1, u'full_name': u'Ivson Ferreira dos Anjos'}, {u'author_order': 2, u'full_name': u'Glauco Fontgalland'}, {u'author_order': 3, u'full_name': u'Silvio Ernesto Barbin'}] IEEE Latin America Transactions, 2014

The way different materials react when submitted to microwave radiation depends strongly on its dielectric properties. Thus, in industrial processes that employ microwaves it is important to previously know the properties of the material to be processed in particular its dielectric characteristics. It is necessary to know the complex permittivity of the material in order to design a suitable cavity ...


More Xplore Articles

Educational Resources on Permittivity

Back to Top

eLearning

No eLearning Articles are currently tagged "Permittivity"

IEEE.tv Videos

No IEEE.tv Videos are currently tagged "Permittivity"

IEEE-USA E-Books

  • Radio Propagation

    Radio wave propagation is a key topic for an in‐building wireless system designer, and has its foundations in electromagnetic theory principles. The existence of propagating electromagnetic waves can be predicted as a direct consequence of Maxwell's equations. Maxwell's curl equations contain constants of proportionality, which dictate the strengths of the fields. In free space, many types of waves can exist, which satisfy Maxwell's equations; that is constitute valid solutions. Amongst the most popular ones are spherical, cylindrical and plane waves. Maxwell's curl equations also dictate special behaviour when impinging on a material. The chapter discusses the median path loss, fast fading, shadowing (slow fading) and building penetration loss. A deep understanding of the propagation mechanisms that affect link performance is thus essential if path loss and/or signal strength is to be predicted inside buildings with reasonable accuracy.

  • 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.

  • The 2D Scattering Equations for Dielectric Targets

    The behavior of the electromagnetic signal radiated by a ground-penetrating radar (GPR) and scattered by buried targets is governed by Maxwell's equations. So, in order to provide hopefully deep enough and self-consistent discussion of GPR data processing, this chapter starts from the beginning and provides the derivation of the whole formulation up to the migration and the linear inversion. This chapter describes the derivation of the scattering equations without considering the effect of the antennas, and the calculation of the incident field radiated by a filamentary current. It discusses plane wave spectrum and effective length of an electromagnetic source in a homogeneous space. The chapter considers the problem of inserting the source and receiver characteristics into the scattering operator. It calculates the far field in a homogeneous lossless space in terms of plane wave spectrum.

  • Characterization of the Host Medium

    For a correct interpretation of the ground-penetrating radar (GPR) signal, it is important to have some estimation of the electromagnetic characteristics of the background medium. A complete characterization theoretically means a measure of the dielectric permittivity and of the magnetic permeability, both meant as complex quantities to account for losses and variables versus the frequency. In many cases, the propagation medium is a low-lossy medium; that is, the real part of the wavenumber is much larger than the imaginary part. The electromagnetic characteristics of the propagation medium depend on its chemical composition, its water content, its porosity, its mineralogy, and possibly its temperature. The measure of the propagation velocity of the electromagnetic waves in a homogeneous soil might be done, in principle, with a buried marker, similarly to what is described for the case of a wall.

  • Current Field in the Earth

    This chapter introduces the soil parameters and their frequency characteristics, calculation method of current field and Green's function created by point source and DC ground electrode.

  • Propagation in Microcells and Picocells

    This chapter contains sections titled:IntroductionReview of Some Propagation BasicsMicrocell and Picocell Empirical ModelsProjectsSummaryReferencesSoftware Supplied

  • 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.

  • Capacitance Phenomena

    The phenomenon of building up a static charge when walking on a carpet illustrates the charge-storing abilities of human body capacitance. Many electronic devices, such as touch-screen displays, touch-sensitive switches, and computer touch pads make use of this property. Capacitors used in electric power applications are typified by the rectangular cans with one or two bushings. When the dielectric materials contain polarized molecules (dipoles), the polarization may be caused by field cancellation from the capacitor plates. In a simple DC circuit, capacitors can be charged through a resistor at an exponential rate. Power capacitors are used in electric power applications mainly for power factor correction and harmonic filters. Filter capacitors cause several electrical hazards, including the risk of electrical shock from a capacitor charged to a high voltage with a high stored energy. The capacitance of a cable is a distributed quantity-the longer the cable, the larger the capacitance.

  • Extraction of the Scattered Field Data from The GPR Data

    Before extracting the scattered field data, the problem of the zero timing is to be addressed. In particular, the choice of the zero time is a problem arising from a physical constraint, namely the fact that any ground penetrating radar (GPR) system has a finite band and, consequently, it cannot radiate or receive?>correctly?> an impulse with an immediate rising up. After the preliminary zero timing, the datum observed in the observation point is the voltage related to the total field in that point, which is roughly proportional to the total field in that point. An important difference between the differential datum and the background removal (BKGR) datum is that the first one is conceived as associated to a specific hardware, whereas BKGR is a procedure that can be applied on the usual common offset data.

  • Fundamentals of Electromagnetic Scattering

    This chapter reviews the fundamental field equations and provides necessary information on boundary conditions and material relations that are used to model electromagnetic properties of materials. It describes the basic field solutions in the form of plane, cylindrical, and spherical waves, the tensor Green function of the vector wave equation, separation of fields in E and H modes, and introduces the electromagnetic form of the Huygens principle. The chapter begins by specializing Maxwell's equations to the case of homogeneous isotropic source‐free medium and noting that their solutions are waves with different propagation directions. The chapter shows that the combination of Maxwell's equations with all these conditions ensures the uniqueness of the solution of the time‐harmonic scattering problems. It presents some of the basic solutions and solution methods that are of particular importance for the electromagnetic scattering theory.



Standards related to Permittivity

Back to Top

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 ...



Jobs related to Permittivity

Back to Top