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Pomezia, Italy

Durand L.,SATIMOs Main Office | Duchesne L.,SATIMOs Main Office | Foged L.J.,SATIMO Italy
EuCAP 2010 - The 4th European Conference on Antennas and Propagation | Year: 2010

The use of probe array is a well established technology for spherical near field systems offering all the possibilities and accuracies of traditional single probe testing at a much faster speed [1-4]. Frequency ranges for probe arrays are from 75MHz to 40GHz. Recently the problem of exhaustive testing of the high number of multi beam antennas embarked on future satellite systems has received considerable attention [5]. Based on conventional measurements techniques this testing would lead to unacceptable cost and duration. Solutions based on "hybrid systems" taking full advantage of fast probe array technology on large mechanical scanners can drastically reduce the measurement time compared to conventional single probe test systems. This paper discusses the use of probe array technology for fast antenna testing in Space, Automotive, Military and Telecom applications.

Javier L.A.Q.,Polytechnic University of Turin | Vecchi G.,Polytechnic University of Turin | Foged L.J.,SATIMO Italy
2010 14th International Symposium on Antenna Technology and Applied Electromagnetics and the American Electromagnetics Conference, ANTEM/AMEREM 2010 | Year: 2010

This communication presents a novel technique to deal with undesired interaction of the AUT with cables and other nearby disturbances. Its key features are: i) it allows removal of the effect of disturbances on antenna pattern, ii) it requires only approximate geometrical knowledge of the AUT and disturbing objects and iii) it is a fast data post-processing step that puts no special requirements on the measurement procedure, which may be performed in the usual way (no baluns, chokes, etc.). © 2010 IEEE.

Araque Quijano J.L.,National University of Colombia | Scialacqua L.,SATIMO Italy | Zackrisson J.,RUAG Aerospace Sweden | Foged L.J.,SATIMO Italy | And 2 more authors.
IEEE Antennas and Wireless Propagation Letters | Year: 2011

We present a promising application of the inverse source technique for antenna diagnostics and the creation of a synthetic higher-performance measurement environment. The focus is on the post-processing of antenna measurements via the recently introduced dual-equation formulation of the inverse source problem, which provides the equivalent sources with highest correlation to actual radiators among the infinite possible choices of equivalence. It is shown how, in practically relevant conditions, measured data can be spatially filtered in the source domain to recover reference conditions not achievable during measurements, e.g., perfectly balanced antenna feeding and absence of supporting structure. The procedure proposed is useful also in the detection, synthetic elimination, and actual correction of the effect of undesired interactions with scatterers in the measurement volume, such as the supporting platform and surrounding obstacles. © 2011 IEEE.

Foged L.J.,SATIMO Italy
Proceedings of the 5th European Conference on Antennas and Propagation, EUCAP 2011 | Year: 2011

This paper presents a technique for the determination of the full sphere pattern of an antenna from truncated spherical near field measurements. The approach is based on an iterative procedure which exploits the band-limitedness properties of the radiated field to correctly reconstruct the full sphere data. Tests performed on synthetic as well as measured near-field data demonstrate the effectiveness of the procedure and its stability against measurement errors. © 2011 EurAAP.

Araque Quijano J.L.,National University of Colombia | Araque Quijano J.L.,Polytechnic University of Turin | Vecchi G.,Polytechnic University of Turin | Sabbadini M.,European Space Agency | And 4 more authors.
Proceedings of the 5th European Conference on Antennas and Propagation, EUCAP 2011 | Year: 2011

This communication presents the application of the source reconstruction technique to the processing of measured data in tasks such as the filtering of disturbances such as undesired coupling with the supporting structure or the feeding and in NF-NF transformation. The filtering technique is based on the dual-equation formulation of the source reconstruction method in order to obtain equivalent sources that can be effectively segmented into desired and undesired contributions. Results on measured and full-wave data confirm the effectiveness of the filtering and transformation computations and demonstrate its utility in measurement facilities. © 2011 EurAAP.

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