Circular array of wideband 3D Vivaldi antennas

Sarkis, R.; Craeye, Christophe

doi:10.1109/ursi-emts.2010.5637231

Cited by 26 publications

(6 citation statements)

References 9 publications

(7 reference statements)

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“…The setup (see Fig. 15) was designed to work in the frequency domain and was composed of a homemade Vivaldi antenna [32] located above a square container (96 cm × 96 cm) made of wood. This setup was attached to a horizontal metal sheet in order to avoid the influence of the underlying materials.…”

Section: A Experimental Descriptionmentioning

confidence: 99%

Fundamental Analyses on Layered Media Reconstruction Using GPR and Full-Wave Inversion in Near-Field Conditions

Coster

Tran

Lambot

2016

IEEE Trans. Geosci. Remote Sensing

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Multifrequency and multioffset ground-penetrating radar data acquisition modes are used to maximize the information content and parameter retrieval capabilities. However, they also increase the computational cost dedicated to the inversion procedure. In this paper, the impact of the number of frequencies and the multistatic configurations on the information retrieval capabilities is investigated through the response surface topographies of the objective functions. We resort to a full-wave-inversion procedure and a recently developed electromagnetic model which takes advantage of a closed-form solution of Maxwell's equations to describe the antenna-medium system. We show with numerical and laboratory experiments the possibility of reducing the number of frequencies from several hundreds to one or several tens of components without affecting the information retrieval capabilities. We also show through several scenarios that the presence of a perfect electrical conductor increases the number of frequencies required to ensure an acceptable retrieval of the subsurface properties whereas the conductivity of the first layer and the relative permittivity of the second layer do not affect it. The results highlight that information content analyses are important in order to study and optimize data acquisition and inversion procedures, and thereby the computation time.Index Terms-Full-wave inversion (FWI), Green's functions, ground-penetrating radar (GPR), intrinsic antenna model, number of frequencies.

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Section: A Experimental Descriptionmentioning

confidence: 99%

Fundamental Analyses on Layered Media Reconstruction Using GPR and Full-Wave Inversion in Near-Field Conditions

Coster

Tran

Lambot

2016

IEEE Trans. Geosci. Remote Sensing

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“…The ASM-MoM explained in [3] is applied for the full wave simulation of a circular arrays of eight connected elements of thick Vivaldi antennas. Each antenna is a compact 3D Vivaldi element having a width of 10 cm, a height of 20 cm and thickness of 1 cm.…”

Section: Design and Simulation Of Circular Array Of 3d Tsamentioning

confidence: 99%

Fast full-wave analysis of wideband circular antenna arrays devoted to accurate direction-finding and polarimetry

Sarkis

Craeye

2012

2012 International Conference on Electromagnetics in Advanced Applications

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Calibration at the array level as well as the development of specific algorithms for direction finding and accurate polarimetric estimation are presented for a circular array of eight connected wideband 3D Taper Slot Antennas (TSA). A straight relation is established between the number of spherical modes used to describe the embedded element patterns and the precision on the angle of arrival and polarization estimation.

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“…This increased thickness permits the LNA to be embedded within the element and will provide excellent electromagnetic shielding. Although thick Vivaldi elements have been described elsewhere [14,15,16], this is the first known attempt to integrate an LNA inside an element.…”

Section: Vivaldi Arraymentioning

confidence: 99%

Development of a low-noise wide-band phased-array feed

Veidt

Burgess

Messing

et al. 2011

2011 XXXth URSI General Assembly and Scientific Symposium

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Low-noise phased-array feeds are a new way to expand the field of view of radio telescopes at centimetre wavelengths. First generation engineering demonstrators of this technology have been constructed and tested by several institutes worldwide. The development of second-generation phased-array feeds is now underway. We describe one effort to design and build an astronomy-capable phased-array feed using techniques to reduce front-end noise and increase system bandwidth.

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Circular array of wideband 3D Vivaldi antennas

Cited by 26 publications

References 9 publications

Fundamental Analyses on Layered Media Reconstruction Using GPR and Full-Wave Inversion in Near-Field Conditions

Fundamental Analyses on Layered Media Reconstruction Using GPR and Full-Wave Inversion in Near-Field Conditions

Fast full-wave analysis of wideband circular antenna arrays devoted to accurate direction-finding and polarimetry

Development of a low-noise wide-band phased-array feed

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