UWB SAR system PULSAR: new generator and antenna developments

Delmonte, Philippe; Dubois, C.; Andrieu, Joël; Beillard, Bruno; Lalande, Michèle; Bertrand, Valérie; Jecko, Bernard; Pécastaing, Laurent; Gibert, A.; Paillol, Jean; Domens, P.; Guillerey, R.; Monnier, Francis; LeGoff, M.

doi:10.1117/12.487018

Cited by 14 publications

(7 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Each of them can support an input voltage level up to 10 kV. The signal diffracted by the target is detected with another UWB antenna [8] connected to a real time oscilloscope. Its sampling rate is 20 Gs/s and its analog bandwidth is 7 GHz.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

An Ultra Wideband Impulse Optoelectronic Radar: Rugbi

Lalande¹,

Diot²,

Vauchamp³

et al. 2009

PIER B

Self Cite

View full text Add to dashboard Cite

Abstract-An ultra wideband radar system based on a coherent emission of an ultra-wideband antenna array using photoconductive switching devices is proposed. The triggering process is obtained by the excitation of semiconductor samples in linear mode using a picosecond laser source. The emitting antenna system and the receiving antenna developed by the Research Institute XLIM present some specific qualities suitable for radiation and measurement of ultrashort pulses. The optical control of the sources allows to sum the The experiments realized with this optoelectronic array validate these two concepts. Another way of improving these systems is proposed. It involves using bipolar pulse generators.

show abstract

Section: Methodsmentioning

confidence: 99%

“…A S11 maximum level of −10 dB is obtained in the frequency range 300 MHz-3 GHz. The axial gain is deduced from a transient measurement method [8] for a frequency range of 300 MHz-3 GHz (Fig. 10).…”

Section: Emitting Uwb Antennas: Valentine Antennasmentioning

confidence: 99%

An Ultra Wideband Impulse Optoelectronic Radar: Rugbi

Lalande¹,

Diot²,

Vauchamp³

et al. 2009

PIER B

Self Cite

View full text Add to dashboard Cite

show abstract

“…It is the goal of a HPM weapon system to interact with the today's modern increasingly complex combination of soft and hardware electronics. In principle, for affecting any target with such radiation, the frequency has to be matched to the frequency absorption spectrum of the target [6]. However, the main advantage of pulsed wideband radiation, with pulse durations in the nanosecond range, is that it is very aggressive for systems with wiring [7][8].…”

Section: Introductionmentioning

confidence: 99%

A 600kV resonant pulse transformer combined to a helical antenna

Pécastaing¹,

Rivaletto²,

Ferron³

et al. 2013

2013 19th IEEE Pulsed Power Conference (PPC)

View full text Add to dashboard Cite

A complete pulsed power source, named MOUNA, is composed of a set of batteries, a DC/DC converter to charge four capacitors, four synchronized spark gap switches, a resonant transformer generating 600kV/265ns pulses, an oil peaking switch and a dipole antenna. This device must transmit waveforms with a wide frequency band and a high figure-of-merit.However, to radiate very high electric fields, the low gain of the dipole antenna is detrimental. The use of a directional antenna may improve performance really significantly focusing the radiation in a preferred direction. The main characteristics of the axial helical antenna (compactness, high gain on the axis, wideband spectrum and high impedance) make it an excellent candidate.In this paper, the first results concerning the design of the antenna (number of turns, size…), of a switch oscillator directly implemented at the output of the transformer are presented. The design of the novel radiating source composed of the MOUNA pulsed power source, the switch oscillator and the helical antenna is also described. The pulsed source and the oscillator contains in a volume of only 25 litres. Finally a CSTbased simulation is proposed to predict the performances of this wideband source.

show abstract

“…Defense requirements are the most prevalent. Ultra-Wide Band (UWB) source, one of the HPM sources, can be used for target identification, buried objects detection, radar system and directed energy weapon system [2]- [7]. 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.…”

Section: Introductionmentioning

confidence: 99%

“…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. In principle, for affecting any target with such radiation, the frequency has to be matched to the frequency absorption spectrum of the target [7]. However, the main advantage of pulsed wideband radiation, with pulse durations in the nanosecond range, is that it is very aggressive for systems with wiring [9] [10].…”

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

Self Cite

View full text Add to dashboard Cite

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.

show abstract

UWB SAR system PULSAR: new generator and antenna developments

Cited by 14 publications

References 0 publications

An Ultra Wideband Impulse Optoelectronic Radar: Rugbi

An Ultra Wideband Impulse Optoelectronic Radar: Rugbi

A 600kV resonant pulse transformer combined to a helical antenna

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

Contact Info

Product

Resources

About