Conferences related to Space Charges

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2020 IEEE International Power Modulator and High Voltage Conference (IPMHVC)

This conference provides an exchange of technical topics in the fields of Solid State Modulators and Switches, Breakdown and Insulation, Compact Pulsed Power Systems, High Voltage Design, High Power Microwaves, Biological Applications, Analytical Methods and Modeling, and Accelerators.


2020 IEEE 16th International Workshop on Advanced Motion Control (AMC)

AMC2020 is the 16th in a series of biennial international workshops on Advanced Motion Control which aims to bring together researchers from both academia and industry and to promote omnipresent motion control technologies and applications.


2020 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC)

All areas of ionizing radiation detection - detectors, signal processing, analysis of results, PET development, PET results, medical imaging using ionizing radiation


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/MTT-S International Microwave Symposium (IMS)

The IEEE International Microwave Symposium (IMS) is the world s foremost conference covering the UHF, RF, wireless, microwave, millimeter-wave, terahertz, and optical frequencies; encompassing everything from basic technologies to components to systems including the latest RFIC, MIC, MEMS and filter technologies, advances in CAD, modeling, EM simulation and more. The IMS includes technical and interactive sessions, exhibits, student competitions, panels, workshops, tutorials, and networking events.

  • 1996 IEEE/MTT-S International Microwave Symposium - MTT '96

  • 1997 IEEE/MTT-S International Microwave Symposium - MTT '97

  • 1998 IEEE/MTT-S International Microwave Symposium - MTT '98

  • 1999 IEEE/MTT-S International Microwave Symposium - MTT '99

  • 2000 IEEE/MTT-S International Microwave Symposium - MTT 2000

  • 2001 IEEE/MTT-S International Microwave Symposium - MTT 2001

  • 2002 IEEE/MTT-S International Microwave Symposium - MTT 2002

  • 2003 IEEE/MTT-S International Microwave Symposium - MTT 2003

  • 2004 IEEE/MTT-S International Microwave Symposium - MTT 2004

  • 2005 IEEE/MTT-S International Microwave Symposium - MTT 2005

  • 2006 IEEE/MTT-S International Microwave Symposium - MTT 2006

  • 2007 IEEE/MTT-S International Microwave Symposium - MTT 2007

  • 2008 IEEE/MTT-S International Microwave Symposium - MTT 2008

  • 2009 IEEE/MTT-S International Microwave Symposium - MTT 2009

    The IEEE International Microwave Symposium (IMS) is the world s foremost conference covering the UHF, RF, wireless, microwave, millimeter-wave, terahertz, and optical frequencies; encompassing everything from basic technologies to components to systems including the latest RFIC, MIC, MEMS and filter technologies, advances in CAD, modeling, EM simulation and more. The IMS includes technical and interactive sessions, exhibits, student competitions, panels, workshops, tutorials, and networking events.

  • 2010 IEEE/MTT-S International Microwave Symposium - MTT 2010

    Reports of research and development at the state-of-the-art of the theory and techniques related to the technology and applications of devices, components, circuits, modules and systems in the RF, microwave, millimeter-wave, submillimeter-wave and Terahertz ranges of the electromagnetic spectrum.

  • 2011 IEEE/MTT-S International Microwave Symposium - MTT 2011

    The IEEE International Microwave Symposium (IMS) is the world s foremost conference covering the UHF, RF, wireless, microwave, millimeter-wave, terahertz, and optical frequencies; encompassing everything from basic technologies to components to systems including the latest RFIC, MIC, MEMS and filter technologies, advances in CAD, modeling, EM simulation and more. The IMS includes technical and interactive sessions, exhibits, student competitions, panels, workshops, tutorials, and networking events.

  • 2012 IEEE/MTT-S International Microwave Symposium - MTT 2012

    The IEEE International Microwave Symposium (IMS) is the world s foremost conference covering the UHF, RF, wireless, microwave, millimeter-wave, terahertz, and optical frequencies; encompassing everything from basic technologies to components to systems including the latest RFIC, MIC, MEMS and filter technologies, advances in CAD, modeling, EM simulation and more. The IMS includes technical and interactive sessions, exhibits, student competitions, panels, workshops, tutorials, and networking events.

  • 2013 IEEE/MTT-S International Microwave Symposium - MTT 2013

    The IEEE MTT-S International Microwave Symposium (IMS) is the premier conference covering basic technologies, to passives and actives components to system over a wide range of frequencies including VHF, UHF, RF, microwave, millimeter -wave, terahertz, and optical. The conference will encompass the latest in RFIC, MIC, MEMS and filter technologies, advances in CAD, modeling, EM simulation, wireless systems, RFID and related topics.The IMS includes technical and interactive sessions, exhibits, student competitions, panels, workshops, tutorials, and networking events.

  • 2014 IEEE/MTT-S International Microwave Symposium - MTT 2014

    IMS2014 will cover developments in microwave technology from nano devices to system applications. Technical paper sessions, interactive forums, plenary and panel sessions, workshops, short courses, industrial exhibits, and a wide array of other technical activities will be offered.

  • 2015 IEEE/MTT-S International Microwave Symposium - MTT 2015

    The IEEE MTT-S International Microwave Symposium (IMS) is the premier conference covering basic technologies, to passives and actives components to system over a wide range of frequencies including VHF, UHF, RF, microwave, millimeter-wave, terahertz, and optical. The conference will encompass the latest in RFIC, MIC, MEMS and filter technologies, advances in CAD, modeling, EM simulation, wireless systems, RFID and related topics. The IMS includes technical sessions, both oral and interactive, worksh

  • 2016 IEEE/MTT-S International Microwave Symposium - IMS 2016

    The IEEE International Microwave Symposium (IMS) is the world s foremost conference covering the UHF, RF, wireless, microwave, millimeter-wave, terahertz, and optical frequencies; encompassing everything from basic technologies to components to systems including the latest RFIC, MIC, MEMS and filter technologies, advances in CAD, modeling, EM simulation and more. The IMS includes technical and interactive sessions, exhibits, student competitions, panels, workshops, tutorials, and networking events.

  • 2017 IEEE/MTT-S International Microwave Symposium - IMS 2017

    The IEEE MTT-S International Microwave Symposium (IMS) is the premier conference covering basic technologies, to passives and actives components to system over a wide range of frequencies including VHF, UHF, RF, microwave, millimeter-wave, terahertz, and optical. The conference will encompass the latest in RFIC, MIC, MEMS and filter technologies, advances in CAD, modeling, EM simulation, wireless systems, RFID and related topics.

  • 2018 IEEE/MTT-S International Microwave Symposium - IMS 2018

    Microwave theory and techniques, RF/microwave/millimeter-wave/terahertz circuit design and fabrication technology, radio/wireless communication.

  • 2019 IEEE/MTT-S International Microwave Symposium - IMS 2019

    Comprehensive symposium on microwave theory and techniques including active and passive circuit components, theory and microwave systems.

  • 2021 IEEE/MTT-S International Microwave Symposium - IMS 2021

    The IEEE MTT-S International Microwave Symposium (IMS) is the premier conference covering basic technologies, to passives and actives components to system over a wide range of frequencies including VHF, UHF, RF, microwave, millimeter-wave, terahertz, and optical. The conference will encompass the latest in RFIC, MIC, MEMS and filter technologies, advances in CAD, modeling, EM simulation, wireless systems, RFID and related topics.

  • 2022 IEEE/MTT-S International Microwave Symposium - IMS 2022

    The IEEE International Microwave Symposium (IMS) is the world s foremost conference covering the UHF, RF, wireless, microwave, millimeter-wave, terahertz, and optical frequencies; encompassing everything from basic technologies to components to systems including the latest RFIC, MIC, MEMS and filter technologies, advances in CAD, modeling, EM simulation and more. The IMS includes technical and interactive sessions, exhibits, student competitions, panels, workshops, tutorials, and networking events.

  • 2023 IEEE/MTT-S International Microwave Symposium - IMS 2023

    The IEEE International Microwave Symposium (IMS) is the world s foremost conference covering the UHF, RF, wireless, microwave, millimeter-wave, terahertz, and optical frequencies; encompassing everything from basic technologies to components to systems including the latest RFIC, MIC, MEMS and filter technologies, advances in CAD, modeling, EM simulation and more. The IMS includes technical and interactive sessions, exhibits, student competitions, panels, workshops, tutorials, and networking events.

  • 2024 IEEE/MTT-S International Microwave Symposium - IMS 2024

    The IEEE International Microwave Symposium (IMS) is the world s foremost conference covering the UHF, RF, wireless, microwave, millimeter-wave, terahertz, and optical frequencies; encompassing everything from basic technologies to components to systems including the latest RFIC, MIC, MEMS and filter technologies, advances in CAD, modeling, EM simulation and more. The IMS includes technical and interactive sessions, exhibits, student competitions, panels, workshops, tutorials, and networking events.

  • 2025 IEEE/MTT-S International Microwave Symposium - IMS 2025

    The IEEE International Microwave Symposium (IMS) is the world s foremost conferencecovering the UHF, RF, wireless, microwave, millimeter-wave, terahertz, and optical frequencies;encompassing everything from basic technologies to components to systems including thelatest RFIC, MIC, MEMS and filter technologies, advances in CAD, modeling, EM simulationand more. The IMS includes technical and interactive sessions, exhibits, student competitions,panels, workshops, tutorials, and networking events.

  • 2026 IEEE/MTT-S International Microwave Symposium - IMS 2026

    The IEEE International Microwave Symposium (IMS) is the world s foremost conference covering the UHF, RF, wireless, microwave, millimeter-wave, terahertz, and optical frequencies; encompassing everything from basic technologies to components to systems including the latest RFIC, MIC, MEMS and filter technologies, advances in CAD, modeling, EM simulation and more. The IMS includes technical and interactive sessions, exhibits, student competitions, panels, workshops, tutorials, and networking events.

  • 2029 IEEE/MTT-S International Microwave Symposium - IMS 2029

    The IEEE International Microwave Symposium (IMS) is the world s foremost conference covering the UHF, RF, wireless, microwave, millimeter-wave, terahertz, and optical frequencies; encompassing everything from basic technologies to components to systems including the latest RFIC, MIC, MEMS and filter technologies, advances in CAD, modeling, EM simulation and more. The IMS includes technical and interactive sessions, exhibits, student competitions, panels, workshops, tutorials, and networking events.

  • 2031 IEEE/MTT-S International Microwave Symposium - IMS 2031

    The IEEE International Microwave Symposium (IMS) is the world s foremost conference covering the UHF, RF, wireless, microwave, millimeter-wave, terahertz, and optical frequencies; encompassing everything from basic technologies to components to systems including the latest RFIC, MIC, MEMS and filter technologies, advances in CAD, modeling, EM simulation and more. The IMS includes technical and interactive sessions, exhibits, student competitions, panels, workshops, tutorials, and networking events.

  • 2036 IEEE/MTT-S International Microwave Symposium - IMS 2036

    The IEEE International Microwave Symposium (IMS) is the world s foremost conference covering the UHF, RF, wireless, microwave, millimeter-wave, terahertz, and optical frequencies; encompassing everything from basic technologies to components to systems including the latest RFIC, MIC, MEMS and filter technologies, advances in CAD, modeling, EM simulation and more. The IMS includes technical and interactive sessions, exhibits, student competitions, panels, workshops, tutorials, and networking events.



Periodicals related to Space Charges

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Aerospace and Electronic Systems Magazine, IEEE

The IEEE Aerospace and Electronic Systems Magazine publishes articles concerned with the various aspects of systems for space, air, ocean, or ground environments.


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.


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


Automatic Control, IEEE Transactions on

The theory, design and application of Control Systems. It shall encompass components, and the integration of these components, as are necessary for the construction of such systems. The word `systems' as used herein shall be interpreted to include physical, biological, organizational and other entities and combinations thereof, which can be represented through a mathematical symbolism. The Field of Interest: shall ...


Computer-Aided Design of Integrated Circuits and Systems, IEEE Transactions on

Methods, algorithms, and human-machine interfaces for physical and logical design, including: planning, synthesis, partitioning, modeling, simulation, layout, verification, testing, and documentation of integrated-circuit and systems designs of all complexities. Practical applications of aids resulting in producible analog, digital, optical, or microwave integrated circuits are emphasized.



Most published Xplore authors for Space Charges

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Xplore Articles related to Space Charges

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Effect of magnitude of space charges on the electric field distribution in XLPE insulation in presence of water trees

2015 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP), 2015

In this paper, we present a numerical simulation of the influence of water trees growing from semiconducting layers (in the interior and the exterior) in presence or not of space charges on the behavior of the cross-linked polyethylene (XLPE) insulation used in the medium voltage cables. Individual vented tree configurations are modeled under Comsol Multiphysics environment. To understand the mechanism ...


Breakdown voltage in high voltage direct current cable insulations considering space charges

2017 18th International Symposium on Electromagnetic Fields in Mechatronics, Electrical and Electronic Engineering (ISEF) Book of Abstracts, 2017

During operation of high-voltage direct current (HVDC) power cables heat is generated in the inner conductor and the insulation. As a result, a thermal breakdown may occur if more heat is generated than can be dissipated. The electric field stress due to space charges accumulating in the insulations superimposes the geometric electric field due to the applied voltage in the ...


Conduction and space charges in polymeric dielectrics and nanocomposites

2012 IEEE 7th International Conference on Industrial and Information Systems (ICIIS), 2012

Polymeric dielectrics are considered important for several inherent advantages over conventional dielectric materials. Low density polyethylene and cross linked polyethylene are being popularly used as insulation for ac cable application. However, application of these polymers for dc cable insulation is hindered with space charge accumulation. New materials with nano-sized particles included in base polymers were tried out with some successes. ...


The effect of space charges on conduction current in polymer by modified PEA method

Conference Record of the 1996 IEEE International Symposium on Electrical Insulation, 1996

Direct measurement of space charge and conduction current was carried out on low-density polyethylene degraded by ultraviolet radiation using a pulsed electro-acoustic (PEA) method. Dominant heterocharges were formed near both electrodes by high voltage application and was found to be deeply trapped. In this paper, the effect of temperature and electric field reversal on the detrapping and trapping of space ...


FLIMM and TSM: two thermal methods for space charges investigation

Proceedings of the 2004 IEEE International Conference on Solid Dielectrics, 2004. ICSD 2004., 2004

For the measurement of space charges profiles, various experimental techniques are available, the most known being the thermal and the acoustic methods. The methods we use for the determination of the space charges belong to the group of non-destructive thermal methods, called FLIMM (Focused Laser Intensity Modulation Method) and TSM (Thermal Step Method). These thermal methods are based on the ...



Educational Resources on Space Charges

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IEEE-USA E-Books

  • Effect of magnitude of space charges on the electric field distribution in XLPE insulation in presence of water trees

    In this paper, we present a numerical simulation of the influence of water trees growing from semiconducting layers (in the interior and the exterior) in presence or not of space charges on the behavior of the cross-linked polyethylene (XLPE) insulation used in the medium voltage cables. Individual vented tree configurations are modeled under Comsol Multiphysics environment. To understand the mechanism of involved phenomena, an evaluation of the electric field distribution is carried out. The influence parameters adopted in this investigation are: the permittivity, the length of the water trees and the magnitude of the space charges. The results of investigation showed that, in the absence of space charges, water trees lead to a local increase (respectively decrease) of the electric field in the outside (respectively inside) areas of these trees. However, the accumulation of space charges induces a significant variation of electric field inside and outside the trees and in the volume of insulation. In fact, the electric field repartition depends on the magnitude of space charge density and space charge layer dimension. According to this repartition, the dynamic movement of the space charges is evoked.

  • Breakdown voltage in high voltage direct current cable insulations considering space charges

    During operation of high-voltage direct current (HVDC) power cables heat is generated in the inner conductor and the insulation. As a result, a thermal breakdown may occur if more heat is generated than can be dissipated. The electric field stress due to space charges accumulating in the insulations superimposes the geometric electric field due to the applied voltage in the cable. In this work, the thermal breakdown process is analyzed including the effects of these space charges. The breakdown voltage at different temperatures is computed in numerical simulations coupling the heat conduction equation and Poisson's equation for a suitably extended HVDC cable model. The results show the breakdown voltage depending on the temperature at the outer sheath. The breakdown voltage decreases or increases with increasing temperature and space charges, depending on the influence of the temperature distribution on the material.

  • Conduction and space charges in polymeric dielectrics and nanocomposites

    Polymeric dielectrics are considered important for several inherent advantages over conventional dielectric materials. Low density polyethylene and cross linked polyethylene are being popularly used as insulation for ac cable application. However, application of these polymers for dc cable insulation is hindered with space charge accumulation. New materials with nano-sized particles included in base polymers were tried out with some successes. But the space charge formation is yet to be understood. Several attempts were made earlier to understand the relation between leakage current conduction in dielectrics and space charge formation. The author presents an understanding on the relation between conduction and space charge and also puts forth recent developments. How nanocomposites could possibly block space charges is also presented.

  • The effect of space charges on conduction current in polymer by modified PEA method

    Direct measurement of space charge and conduction current was carried out on low-density polyethylene degraded by ultraviolet radiation using a pulsed electro-acoustic (PEA) method. Dominant heterocharges were formed near both electrodes by high voltage application and was found to be deeply trapped. In this paper, the effect of temperature and electric field reversal on the detrapping and trapping of space charges was investigated and the role of space charge in electrical conduction was discussed quantitatively. The main mechanism for detrapping and trapping of space charges was the Poole-Frenkel model.

  • FLIMM and TSM: two thermal methods for space charges investigation

    For the measurement of space charges profiles, various experimental techniques are available, the most known being the thermal and the acoustic methods. The methods we use for the determination of the space charges belong to the group of non-destructive thermal methods, called FLIMM (Focused Laser Intensity Modulation Method) and TSM (Thermal Step Method). These thermal methods are based on the interaction between the thermal wave and the electric charges present in the insulator, which generates a pyroelectric current. Their thermal excitation process are different: the FLIMM method uses a laser beam modulated in intensity, on the other hand, the TSM method rests on the creation of a thermal step on one side of the sample. Knowing the pyroelectric current and the temperature profile, and using an appropriate mathematical deconvolution, the space charges distribution can be determined. In this paper, after detailing the principle of these two techniques, one will present the space charges profiles obtained for PET (polyethylene terephthalate) samples conditioned at different temperatures and electric fields.

  • Space Charges in Metal-Solid Electrolyte-Metal Structures

    The influence of electrodes on the space charge distribution in solid polymer electrolytes has been investigated. Aluminum-poly(ethylene oxide)-aluminum sample structures with varying distance between the metal electrodes are considered. The charge distribution in the poly(ethylene oxide) is extracted by differentiating twice the surface potential measured by the Kelvin Probe Force Microscopy. With this approach, charge oscillations and charge packets have been detected for the first time in solid electrolytes under biased and unbiased conditions.

  • 3D cartography of space charges induced by UV irradiation

    UV irradiation produces irreversible damages in the dielectric insulators. Irradiation sources are numerous: partial discharges, parasitic discharges (environmental) or ambient light. The most known effect of irradiation is yellowing indicating an advanced material damage. We already have shown that before yellowing, space charges appear close to the irradiated surface, and increase with the irradiation time. In order to investigate more precisely this phenomenon, electroluminescence measurements and space charges detection were undertaken. For space charge measurements, the FLIMM (Focused Laser Intensity Modulation Method) technique was used. This non destructive method allows localized charges detection and also the carrying out of 3D cartographies with a very good spatial resolution. The studied material was 25 mum thick Poly(ethylene 2.6-naphthalate) (PEN). During the irradiation, the samples were protected by a mask, except a small circular area (D = 4 mm). In this paper, three-dimensional space charges and global electroluminescence (EL) and intensity profiles are shown. The discussion deals with the UV induced modification by studying the difference between the level signal in irradiated zone and a non irradiated one, and the performances of the detection techniques in terms of accuracy.

  • The origin and effect of space charges in electrospinning

    This work involves the study of the origin and effect of space charges in the electrospinning process. Electrospinning is a process used to make solid, nanofibrous polymer mats. These mats are used in tissue engineering as scaffolds for cells. The origin and effect of space charges in this process has not been well-studied.

  • The role of corona and space charges during femtosecond laser pulse filament guided high voltage discharges in air

    Summary form only given. The plasma column left behind by ultrashort laser pulse filamentation is utilized to guide high voltage (HV) discharges in air. Many experiments have been carried out where the filament plasma is placed between two HV electrodes and a discharge is guided across the large gap (for example Ref [1]). Researchers still believe that one application could be potentially guiding lightning in the atmosphere, like a lightning rod, due to the longitudinal extent of the plasma ranging over several 10's of meters [2]. However lab experiments can only demonstrate discharges over a few meters. The reason for this is still not very clear due to the overall physics of the process not being fully understood. Here, we present experimental results in air on the role of space charges and corona during the filament guided HV discharge. Our conclusion is that the main driver of the breakdown is an enhancement of the corona between the electrodes and that the electric fields available limit the discharge distance achievable.Filamentation is a non- linear process where non-linear selffocusing (due to the Kerr effect), diffraction, and plasma defocusing create a dynamic balance [3]. The laser pulse propagates in a small beam diameter longer than the usual Rayleigh length. The plasma left behind the filament has a density on the order of 1016 cm-3 and a low conductivity. Initially it was believed that the plasma could directly guide HV discharges. However, a delay between the actual discharge and the filament placement is observed, ruling out the direct wire-like guiding mechanism. Previously, the reason for this delay was not completely understood. Our experimental results show that an enhancement of the formation of corona at the HV probes can be observed. From there, the dynamics rely on the electric field as a driver for developing leaders across the gap until a conducting connection is formed between the electrodes. These results show that the discharge distance is limited by the electric field and therefore limits the usefulness for the applications originally intended.

  • Study of electrical and electromechanical constraints in the insulation of high-voltage cables containing microcavities: effect of space charges

    This study reports on investigations aiming to determine by numerical simulation the effect of space charges on the electrical and electromechanical constraints in microcavities contained in high-voltage cables insulation. The simulation is based on the numerical resolution of the Poisson equation by the finite element method. The authors calculate the electric field and they determine the electrostatical pressure for various space-charge density values. The elongation of microcavities is calculated for appreciating the effect of the electrostatical pressure on the walls of the cavity. The role of homocharges and heterocharges on constrains is studied and results of the simulation are in agreement with published technical literature.