Rapid near-field antenna testing via arrays of modulated scattering probes

Bolomey, Jean-Charles; Cown, B.; Fine, G.; Jofre, L.; Mostafavi, M.; Picard, Dominique; Estrada, J.; Friederich, P.G.; Cain, F. L.

doi:10.1109/8.1182

Cited by 79 publications

(35 citation statements)

References 6 publications

(2 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As a matter of fact, such a time is currently very much greater than that needed to carry out the corresponding near-field-far-field (NF-FF) transformation. In order to satisfy this demand, the use of the modulated scattering technique employing arrays of scattering probes, which allows a very fast electronic scanning, has been proposed in [1]. However, antenna testing NF facilities based on such a technique are not very flexible.…”

Section: Introductionmentioning

confidence: 99%

An Effective NF-FF Transformation Technique With Planar Spiral Scanning Tailored For Quasi-Planar Antennas

D’Agostino

Ferrara

Gennarelli

et al. 2008

IEEE Trans. Antennas Propagat.

View full text Add to dashboard Cite

An effective probe compensated near-field-far-field transformation technique with planar spiral scanning is developed in this paper. It makes use of an ellipsoidal modelling of the source, instead of the previously adopted spherical one. Such a modelling, tailored for quasi-planar antennas, allows one to consider measurement planes at a distance smaller than one half the antenna maximum size, thus reducing the error related to the truncation of the scanning surface. Moreover, it is quite general, containing the spherical modelling as particular case, and reduces significantly the number of the needed near-field data when dealing with quasi planar antennas. Some numerical tests, assessing the accuracy of the technique and its stability with respect to random errors affecting the data, are reported.Index Terms-Ellipsoidal source modelling, near-field-far-field (NF-FF) transformation techniques, non-redundant sampling representations of electromagnetic fields, planar spiral scanning.

show abstract

Section: Introductionmentioning

confidence: 99%

An Effective NF-FF Transformation Technique With Planar Spiral Scanning Tailored For Quasi-Planar Antennas

D’Agostino

Ferrara

Gennarelli

et al. 2008

IEEE Trans. Antennas Propagat.

View full text Add to dashboard Cite

show abstract

“…The use of the modulated scattering technique employing arrays of scattering probes, which allows a very fast electronic scanning, has been also proposed in [13] to reduce the time required for the acquisition of the NF data. However, antenna NF measurement facilities based on such a technique are not very flexible.…”

Section: Introductionmentioning

confidence: 99%

The Unified Theory of Near-Field-Far-Field Transformations With Spiral Scannings for Nonspherical Antennas

D’Agostino¹,

Ferrara²,

Gennarelli³

et al. 2009

PIER B

121

View full text Add to dashboard Cite

Abstract-The unified theory of near-field-far-field transformations with spiral scannings for quasi-spherical antennas is extended in this paper to the case of nonspherical ones, i.e., antennas with two dimensions very different from the third one. To this end, these antennas are no longer considered as enclosed in a sphere, but in a proper convex domain bounded by a rotational surface. The extension, heuristically derived by paralleling the rigorous procedure valid for the spherical source modelling, allows one to overcome its main and serious drawbacks. In fact, the corresponding near-field-farfield transformations use a reduced number of near-field measurements and, above all, allow one to consider measurement surfaces at a distance smaller than one half the antenna maximum size, thus remarkably reducing the error related to the truncation of the scanning zone. These are very important features, which make the spiral scannings more and more appealing from the practical viewpoint. Some examples of the application of this theory to spirals wrapping the conventional scanning surfaces employed in the near-field-far-field transformations are reported, and the accuracy and robustness of the far-field reconstructions are assessed.

show abstract

“…First, diagnostics [2,3]. Research teams are currently strongly engaged we describe the prototype of a 3-GHz microwave imaging system both in developing suitable algorithms for inversion of data and based on a modulated scattering technique (MST) [16][17][18] dedielectric reconstruction and in studying efficient illumination veloped at the Applied Electromagnetic Laboratory of the Departand measurement systems. Concerning the first point, a wide ment of Biophysical and Electronic Engineering, University of number of inversion techniques were proposed in recent years Genoa, Italy.…”

mentioning

confidence: 99%

A 3-GHz microwave imaging system based on a modulated scattering technique and on a modified Born approximation

Azaro

Caorsi

Pastorino

1998

Int. J. Imaging Syst. Technol.

View full text Add to dashboard Cite

This article deals with short‐range active microwave imaging. In particular, a 3‐GHz imaging system based on a modulated scattering technique is described. By using a probe made of an array of (passive) dipoles rotating around a test area, it is possible to measure the field scattered by a long cylinder under approximately transverse‐magnetic illumination conditions. Moreover, some considerations are made concerning the relationship for the modulated scattering techniques. Finally, some preliminary experimental results are presented. They were obtained by using a numerical approach to the electromagnetic inverse scattering problem which is developed in the spatial domain, and by making use of a modified Born approximation. © 1998 John Wiley & Sons, Inc. Int J Imaging Syst Technol, 9, 395–403, 1998

show abstract

Rapid near-field antenna testing via arrays of modulated scattering probes

Cited by 79 publications

References 6 publications

An Effective NF-FF Transformation Technique With Planar Spiral Scanning Tailored For Quasi-Planar Antennas

An Effective NF-FF Transformation Technique With Planar Spiral Scanning Tailored For Quasi-Planar Antennas

The Unified Theory of Near-Field-Far-Field Transformations With Spiral Scannings for Nonspherical Antennas

A 3-GHz microwave imaging system based on a modulated scattering technique and on a modified Born approximation

Contact Info

Product

Resources

About