Pomezia, Italy


Pomezia, Italy
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Foged L.J.,SATIMO Italy | Giacomini A.,SATIMO Italy | Saccardi F.,SATIMO Italy | Tancioni L.M.,SATIMO Italy | And 6 more authors.
IEEE Antennas and Propagation Society, AP-S International Symposium (Digest) | Year: 2013

An important satellite based application at VHF band is the Automatic Identification System (AIS). The system is devised to receive messages sent by vessels for maritime safety and security purposes. The intended platform is a mini-satellite in Low Earth Orbit (LEO). Due to the in-orbit deployment of the array and overall mass requirements for the satellite, the array element minimization and mass reduction are considered performance drivers. The important size reduction properties of Artificial Magnetic Materials (AMM) / Meta Materials (MM) made this approach a natural choice as baseline array element technology. This paper presents the preliminary study of the array element including the manufacturing of an elegant bread-board and verification by measurement. © 2013 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 | 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 | Giacomini A.,SATIMO Italy | Saccardi F.,SATIMO Italy | Tancioni L.M.,SATIMO Italy | And 5 more authors.
IEEE Antennas and Propagation Society, AP-S International Symposium (Digest) | Year: 2013

Accurate measurements on low gain antennas at VHF frequencies are very demanding due to the limited dimensions of available test ranges. This paper presents the findings and post processing issues involved in the verification measurement on a low gain VHF antenna array element with minimized mass and dimensions developed for space application and suitable for an Automatic Identification System (AIS). The testing has been performed in a hemispherical spherical near field antenna test range of Renault in Aubevoye, France. © 2013 IEEE.

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.

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.

Foged L.J.,SATIMO Italy | Scialacqua L.,SATIMO Italy | Noren P.,SATIMO Italy | Herbiniere F.,SATIMO.
2013 7th European Conference on Antennas and Propagation, EuCAP 2013 | Year: 2013

The spherical near-field antenna measurement system StarLab has evolved to cover the entire frequency band from 800MHz to 18GHz [1, 2, 3]. The system is based on probe array technology and the Advanced Modulated Scattering Technique (A-MST) [4, 5]. The StarLab system offers the speed advantages of a probe array, while the mechanical rotation in elevation allows for unlimited angular resolution over the full 3D sphere. By adding a linear scanner, the StarLab system can be converted to a compact cylindrical near field measurement system. This system is particularly well-suited for measurements of base stations and other sectorial type array antennas often used in radar applications. This paper describes the innovative design aspects of the StarLab as a cylindrical near-field measurement system. The system validation testing has been performed using the inverse source technique [9-11]. Measurement of radiation patterns are discussed with particular attention to radar antennas. © 2013 EurAAP.

Foged L.J.,SATIMO Italy | Morbidini R.,SATIMO Italy | Tancioni L.M.,SATIMO Italy | Giacomini A.,SATIMO Italy | Estrada J.,SATIMO U.S.
IEEE Antennas and Propagation Society, AP-S International Symposium (Digest) | Year: 2013

Compact, low profile, wideband horns operating in the VHF band represent a challenge constrained by performance versus mechanical dimension and weight, together with available manufacturing techniques. This paper presents the design of a very compact, dual polarized, wide bandwidth horn in VHF band suitable for antenna measurement applications. The initial study, manufacturing and final verification measurement before delivery are here described. © 2013 IEEE.

Foged L.J.,SATIMO Italy | Giacomini A.,SATIMO Italy | Morbidini R.,SATIMO Italy
IEEE Antennas and Propagation Magazine | Year: 2010

Recent advances in the design of orthomode junctions (OMJs) have created new devices capable of achieving as much as a 14 bandwidth, while maintaining the high performance of traditional OMJ designs [1-6]. The new OMJ technology is based on an inverted-ridge structure, with four symmetrical feeding points for external balanced feeding, stabilizing the frequency dependence of the OMJ. © 2006 IEEE.

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.

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