Photoconductive Switch-Based HPM for Airborne Counter-IED Applications

Zucker, O.; Yu, Paul K. L.; Griffin, A.H.

doi:10.1109/tps.2014.2313870

Cited by 12 publications

(7 citation statements)

References 2 publications

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“…The Poynting vector has been calculated using the main field components E and H. The integral is 0.2 J/m 2 . This theoretical results and the experimental ones presented just after demonstrate that even with less than 1 J/m 2 [10], one pulse can affect targets.…”

Section: Test On Targetssupporting

confidence: 70%

“…The analysis of the results of the test campaign highlights the possibility of remote triggering of an IED by a high‐power EM source generating a strong PEF for a few nanoseconds. The different criteria stated in the bibliography [10] and which served as a basis for the theoretical design are thus fully confirmed.…”

Section: Test On Targetsmentioning

confidence: 74%

“…In Ref. [10], it was shown that an impulse signal with an energy density of a few Joules per square meter, a duration of 1 ns, and a bandwidth between 200 MHz and 1 GHz is sufficient to detonate a wide variety of IEDs. The objective of the present study is therefore to see if it is possible to trigger a M2 flash bulb with a nanosecond duration UWB waveform.…”

Section: Ied Neutralisation Methodsmentioning

confidence: 99%

“…The value of the peak electric field applied to the flashbulbs was set at the beginning of each series, and it remained constant during all tests. The PRF of the burst is important and has been discussed as well in the literature [5,10]. The PRF of the electromagnetic shots reaching the target should be as high as possible, to allow the Joule deposited energy to accumulate and the temperature of the target metallic components to increase.…”

Section: Test On Targetsmentioning

confidence: 99%

“…It was shown in Ref. [10] that the activation energy of a military M6 detonator has the same order of magnitude (4 and 5 mJ) as the energy necessary to light an M2 flash bulb manufactured by General Electric (from 2 to 3 mJ). Therefore, a systematic test procedure for the assessment of M6 detonator activation using data from experiments in which M2 flashbulbs are remotely lighted using PEFs is proposed.…”

Section: Introductionmentioning

confidence: 99%

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A high‐power electromagnetic source for disabling improvised explosive devices

Ariztia,

Ibrahimi,

Zhabin

et al. 2024

High Voltage

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Ultra‐wideband (UWB) microwave sources driven by specialised pulsed power generators have experienced a considerable development in the last decade due to their wide domain of new applications such as defence or counter‐terrorism activity. The authors present the main findings of a research dedicated to the development of a pulsed power‐driven electromagnetic field source for disabling improvised explosive devices (IED). The pulsed power generator driving the source is a 13‐stage compact Marx producing voltage pulses reaching an amplitude of 0.5 MV, with a pulse repetition frequency (PRF) of up to 100 Hz. The generator is coupled to a bipolar pulse forming line, providing bipolar pulses with a dV/dt of around 1.6 MV/ns. This pulsed power system feeds an array composed of 16 Koshelev‐type UWB antennas through an impedance matching transformer. The resulting electromagnetic source is capable to produce pulsed electric fields (PEFs) having a figure‐of‐merit (FOM) of 1 MV. First, practical experiments were carried out to study the effects of the PEFs on targets. The targets used in the present study are M2B type flashbulbs, known to have the same susceptibility as the US army M6 detonator. Different configurations of wires (shielded, twisted, etc) with different lengths were used in connecting items inside these targets. The tests were performed by placing the flashbulbs at different distances to determine the essential parameters (i.e., amplitude, duration, and frequency range) of the PEFs required to trigger them. An overview of the experimental campaign and the main findings are also presented followed by conclusions.

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Section: Test On Targetssupporting

confidence: 70%

Section: Test On Targetsmentioning

confidence: 74%

Section: Ied Neutralisation Methodsmentioning

confidence: 99%

Section: Test On Targetsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A high‐power electromagnetic source for disabling improvised explosive devices

Ariztia,

Ibrahimi,

Zhabin

et al. 2024

High Voltage

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Progress in narrowband high-power microwave sources

Zhang

Fan

et al. 2020

Physics of Plasmas

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Even after 50 years of development, narrowband high-power microwave (HPM) source technologies remain the focus of much research due to intense interest in innovative applications of HPMs in fields such as directed energy, space propulsion, and high-power radar. A few decades ago, the main aim of investigations in this field was to enhance the output power of a single HPM source to tens or hundreds of gigawatts, but this goal has proven difficult due to physical limitations. Therefore, recent research into HPM sources has focused on five main targets: phase locking and power combination, high power efficiency, compact sources with a low or no external magnetic field, high pulse energy, and high-power millimeter-wave generation. Progress made in these aspects of narrowband HPM sources over the last decade is analyzed and summarized in this paper. There is no single type of HPM source capable of excellent performance in all five aspects. Specifically, high pulse energy cannot be achieved together with high power efficiency. The physical difficulties of high power generation in the millimeter wave band are discussed. Semiconductor-based HPM sources and metamaterial (MTM) vacuum electron devices (VEDs) are also commented on here. Semiconductor devices have the advantage of smart frequency agility, but they have low power density and high cost. MTM VEDs have the potential to be high power efficiency HPM sources in the low frequency band. Moreover, problems relating to narrowband HPM source lifetime and stability, which are the important determinants of the real-world applicability of these sources, are also discussed.

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