Introduction to the Special Issue on High-Power Electromagnetics (HPEM) and Intentional Electromagnetic Interference (IEMI)

Radasky, William A.; Baum, Carl E.; Wik, Magnus

doi:10.1109/temc.2004.831899

Cited by 349 publications

(119 citation statements)

References 9 publications

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“…Intentional electromagnetic interference describes a wide range of technologies that are designed to disrupt the performance of electronic systems by introduction of spurious signals in different frequency ranges. These systems must also typically be high power, since it is generally desired to have as large an effect possible at as long distances possible [8]. Even if the radiated energy of a single pulse UWB system is low, these systems can disrupt, disable, or destroy electronic target because of the repetitive operation.…”

Section: Introductionmentioning

confidence: 99%

Feed Signal Influence and Potential Performances of a Compact Radiation Source Based on a Helical Antenna

Pécastaing¹,

Rivaletto²,

Ferron³

et al. 2015

JEMAA

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In the class of emerging high power electromagnetic sources, a complete pulsed power source, named MOUNA (French acronym of "Module Oscillant Utilisant une Nouvelle Architecture") has been developed. This device must transmit waveforms with a wide frequency band and a high figure-of-merit. To improve the overall performance of the MOUNA system while maintaining its compact size, two approaches are being explored in the paper: the replacement of the dipole antenna by a helical antenna and its feeding signal influence. Helical antenna is cylindrical shape and relatively compact. It offers relatively good gain factor and directivity. The waveform delivered to the antenna is directly related to the amplitude of the radiated electric field. Therefore, different waveforms (step pulse, Gaussian pulse, bipolar pulse and damped sinusoid) are compared to point out the feed signal influence on the radiated electric field. Switch oscillators appear to be considered as interesting resonant sources for driving an antenna. The novel radiating source consists of a primary power source, a resonant transformer, a coaxial transmission line damped oscillator (also termed as coaxial resonator), and a helical antenna. This high voltage pulsed source is very compact (volume of only 2500 cc without the antenna). Our study aims at designing the antenna (number of turns, size…) and a coaxial damped oscillator directly implemented at the output of the transformer. A CST-based simulation is proposed to predict the performances of this wideband source.

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Section: Introductionmentioning

confidence: 99%

Feed Signal Influence and Potential Performances of a Compact Radiation Source Based on a Helical Antenna

Pécastaing¹,

Rivaletto²,

Ferron³

et al. 2015

JEMAA

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show abstract

“…With the concept of electromagnetic topology in mind [1], many of the systems that require electromagnetic shielding are physically very large with many apertures and cables entering the facility that needs to be handled correctly. The cause of the electromagnetic interference (EMI) can, e.g., be lightning strikes (that cause both surge currents and radiated fields) or radio and radar stations (where incidents due to fields of high power have been recorded, see [2] or [3] for an overview). Another concern that justifies the use of protection from EMI is the threat of intentional EMI (IEMI) [3].…”

Section: Introductionmentioning

confidence: 99%

“…The cause of the electromagnetic interference (EMI) can, e.g., be lightning strikes (that cause both surge currents and radiated fields) or radio and radar stations (where incidents due to fields of high power have been recorded, see [2] or [3] for an overview). Another concern that justifies the use of protection from EMI is the threat of intentional EMI (IEMI) [3]. IEMI is the intentional malicious use of electromagnetic energy to cause upsets in, or damage to, electronic systems [4] and is today also considered a large hazard to critical infrastructure and its subsystems.…”

Section: Introductionmentioning

confidence: 99%

Comparing Analytical and Numerical Calculations of Shielding Effectiveness of Planar Metallic Meshes With Measurements in Cascaded Reverberation Chambers

Månsson¹,

Ellgardt²

2012

PIER C

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Abstract-Large electrical systems or facilities can be satisfactorily shielded by using low-cost meshed metallic nets. Here the shielding effectiveness for two such planar meshes is calculated analytically and verified both experimentally by using cascaded reverberation chambers as well as numerically with results computed using a full wave electromagnetic solver. It is shown that all three methods agree and, in addition, that non-square shaped aperture meshes can be handled with an equivalent square area shaped aperture.

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“…The 'very high intensity of external electromagnetic environments' is known as HEMP (High Altitude Electromagnetic Pulse), UWB (Ultra Wide Band), HPM (High Power Microwaves). All of them are called HPEM (High Power Electromagnetism), and it is defined as 'all of electromagnetic environments of electric field above 100 V/m' [9][10][11]. Especially EMP, UWB and HPM are regarded as the intentional electromagnetic environments for the specific purposes.…”

Section: Introductionmentioning

confidence: 99%

A Validation of Conventional Protection Devices in Protecting Emp Threats

Han¹,

Huh²,

Choi³

2011

PIER

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Abstract-The performance of complementary ESD/Lightning protection devices being exposed to EMP was studied. We studied protection devices such as GDT (Gas Discharge Tube), TVS (Transient Voltage suppressor), and Varistor. The EMP signal has a very fast rise time of 100 psec and the maximum peak voltage of 2 kV. The GDT could not protect the EMP signal. The varistor showed about 35% of protection ability, and the TVS showed about 50% of protection ability. Thus the GDT is not a proper device to protect EMP. However, all of the protection devices did not show their nonlinear property.

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Introduction to the Special Issue on High-Power Electromagnetics (HPEM) and Intentional Electromagnetic Interference (IEMI)

Cited by 349 publications

References 9 publications

Feed Signal Influence and Potential Performances of a Compact Radiation Source Based on a Helical Antenna

Feed Signal Influence and Potential Performances of a Compact Radiation Source Based on a Helical Antenna

Comparing Analytical and Numerical Calculations of Shielding Effectiveness of Planar Metallic Meshes With Measurements in Cascaded Reverberation Chambers

A Validation of Conventional Protection Devices in Protecting Emp Threats

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