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Mioc F.,Microwave Vision Italy MVI | Saporetti M.,Microwave Vision Italy MVI | Sabbadini M.,European Space Agency | Del Muto M.,StepOver
2016 10th European Conference on Antennas and Propagation, EuCAP 2016 | Year: 2016

This paper presents the application to satellite antenna modelling of a common format for the exchange of geometry and associated data. The EDX development has been a core activity of the EAML team in collaboration with the Working Group on Software of the European Association on Antennas and Propagation (EurAAP). The implementation of the Structures Data Dictionary in Data Dictionary Language is discussed together with an application example relevant to the Emerald satellite facsimile. © 2016 European Association of Antennas and Propagation. Source


Morales M.J.L.,Technical University of Madrid | Saccardi F.,Microwave Vision Italy MVI | Castaner M.S.,Technical University of Madrid | Foged L.J.,Microwave Vision Italy MVI
2016 10th European Conference on Antennas and Propagation, EuCAP 2016 | Year: 2016

This paper presents a comparison between two different echo reduction techniques applied to one-single cut antenna measurements. These techniques are based on modal filtering and time filtering. The first technique uses a post-processing of the far field one-single cut so as to obtain a modal expansion of cylindrical modes and to cancel the effect of spurious signals. The second one is based on filtering echoes out in time domain by applying a Fourier Transform to get a signal in which some spurious contributions can be filtered out. Such techniques are applied on the single cut measurements of a wideband horn (MVI SH2000) performed in a semi-anechoic chamber and on the measurements of a dipole (MVI SD1900) performed in a MVG spherical multi-probe system (StarLab). A smart combination of both methods is also applied in order to improve the results of the post processing with respect each different method. © 2016 European Association of Antennas and Propagation. Source


Foged L.J.,Microwave Vision Italy MVI | Scialacqua L.,Microwave Vision Italy MVI | Saccardi F.,Microwave Vision Italy MVI | Quijano Araque J.L.,National University of Colombia | Vecchi G.,Polytechnic University of Turin
IEEE Antennas and Propagation Magazine | Year: 2014

A number of interesting applications of the equivalent-current/source method (EQC) have recently been presented for antenna design and diagnostics. The Dual-Equation formulation has been proven to be superior in terms of accurately reconstructing sources on, or very near, the AUT structure, and is the only formulation directly applicable for diagnostics [1]. The maximum antenna size that can be handled by this method is limited by memory and running time constraints, due to the construction and solution of the linear system describing the problem. This paper reports the enhancement of the Dual-Equation formulation by the integration of the Fast Multipole Method, which allows dealing efficiently with large antennas. © 2014 IEEE. Source


Drioli L.S.,European Space Agency | Foged L.J.,Microwave Vision Italy MVI | Saccardi F.,Microwave Vision Italy MVI | Scialacqua L.,Microwave Vision Italy MVI
2015 9th European Conference on Antennas and Propagation, EuCAP 2015 | Year: 2015

In this paper data coming from a GNSS satellite measurement campaign will be used to perform an advanced analysis regarding the interaction between antennas, satellite structure and appendages. © 2015 EurAAP. Source


Foged L.J.,Microwave Vision Italy MVI | Saccardi F.,Microwave Vision Italy MVI | Giacomini A.,Microwave Vision Italy MVI
2016 10th European Conference on Antennas and Propagation, EuCAP 2016 | Year: 2016

Probe Correction (PC) in Spherical Near Field (SNF) measurements is typically performed involving the so called first order PC algorithm [1]-[3] which assumes probes with limited |μ|=1 spherical wave spectrum. Lot of effort is typically put in the developments of probes with such requirement [4]-[5] but their design is in many case very challenging especially for wide-band applications. In order to have less restrictions in the selection of the probe, different full probe correction techniques have been recently proposed [6]-[9]. In this paper the accuracy and limitation of the first and higher order PC algorithms are investigated considering the SNF measurement of a wideband horn measured with a first order probe and with a standard gain antenna with higher modal content. The full PC algorithm here considered is based on the modification of the spherical basis functions that are properly elaborated taking into account the effect of the probe. © 2016 European Association of Antennas and Propagation. Source

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