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87 results on '"Dassano, G."'

1. Flexible and Deployable Antenna Measurement System

Author

Giordanengo, G., primary, Righero, M., additional, Musacchio Adorisio, G., additional, Mayer, F., additional, Maurer, M., additional, Peters, G., additional, Dassano, G., additional, Maggiora, R., additional, Vecchi, G., additional, and Rolo, L., additional

Published
2023
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3. Design and Verification of a Q-Band Test Source for UAV-Based Radiation Pattern Measurements

Author

Paonessa, F, Virone, G, Ciorba, L, Addamo, G, Lumia, M, Dassano, G, Zannoni, M, Franceschet, C, Peverini, O, Paonessa, Fabio, Virone, Giuseppe, Ciorba, Lorenzo, Addamo, Giuseppe, Lumia, Mauro, Dassano, Gianluca, Zannoni, Mario, Franceschet, Cristian, Peverini, Oscar A., Paonessa, F, Virone, G, Ciorba, L, Addamo, G, Lumia, M, Dassano, G, Zannoni, M, Franceschet, C, Peverini, O, Paonessa, Fabio, Virone, Giuseppe, Ciorba, Lorenzo, Addamo, Giuseppe, Lumia, Mauro, Dassano, Gianluca, Zannoni, Mario, Franceschet, Cristian, and Peverini, Oscar A.

Abstract

In the last years, the unmanned aerial vehicles (UAVs) generated significant innovations in in situ antenna measurements. UAV-mounted test sources have been exploited to characterize the radiation pattern of receiving antennas and arrays for HF radars, radio telescopes in very high-frequency (VHF) band, and up to the X-band for radar characterization. A UAV test source operating in the Q -band has been recently developed within the large-scale polarization explorer (LSPE) project. It will be used for the in situ validation of a ground-based cluster of coherent polarimeters for cosmology observation. This article presents the payload solution that is actually applicable to general UAV-based radiation pattern measurements in the Q-band. It is based on a phase-locked loop synthesizer and an active multiplier coupled with a power detector to compensate for signal power drifts in postprocessing. Relevant system tests have been performed in both laboratory environment and operative conditions. The measured outdoor radiation patterns are in good agreement with both the anechoic chamber measurements and simulated data.

Published
2020

4. Dual-Band Piecewise-Linear Profile Feed-Horns for the Copernicus Imaging Microwave Radiometer Mission.

Author

Addamo, Giuseppe, Virone, G., Lumia, M., Fiorelli, B., Dassano, G., Grilli, Marco, and Peverini, O. A.

Abstract

This letter presents the design strategy and the experimental results on the Ku/Ka dual-band feed-horn developed within the Phase A/B1 study of the Copernicus imaging microwave radiometer, which is one of the new six expansion missions of the European Copernicus flagship program on Earth observation operating in five frequency channels. The radiometer requirements translate into a dense focal plane composed by compact and lightweight dual-band feed horns. The optimum illumination was derived in terms of Bloch waves and the applicability of piecewise-linear profile feed-horns for its synthesis in the case of two highly separated Ku--/Ka--frequency bands (1:1.95) was investigated. The presented feed-horn design was validated up to a technological readiness level of 6. The reported performances at antenna level for the complete Ku-/Ka-band feed cluster demonstrate the feasibility of dual-band smooth-wall feed-horns focal-planes meeting all the Earth observation requirements in terms of footprints, beam- and wide-beam efficiencies, and cross-polarization. [ABSTRACT FROM AUTHOR]

Published
2021
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13. Comparison of reflector antenna measurements and simulations

Author

Sierra Castañer, Manuel, Foged, Lars Jacob, Saporetti, M. A., Jørgensen, E., Voigt, T., Tallini, D., Orefice, M., Giordanengo, Boris, Dassano, G., Böttcher, M., Wien, A., Serna, J.M., Pérez de Diego, D., and Calvano, F.

Subjects
Telecomunicaciones, Computer Science::Information Theory
Abstract

In antenna measurement, well-established procedures are consolidated to determine the associated measurement uncertainty for a given antenna and measurements scenario [1-2]. Similar criteria for establishing uncertainties in numerical modeling of the same antenna are still to be established. In this paper, we investigate the achievable agreement between antenna measurement and simulation when external error sources are minimized. The test object, is a reflector fed by a wideband dual ridge horn (SR40-A and SH4000) manufactured by MVG. This highly stable reference antenna has been selected to minimize uncertainty related to finite manufacturing and material parameter accuracy. Two frequencies, 10.7GHz and 18GHz have been selected for detailed investigation. The antenna has been measured by several measurement facilities (spherical, cylindrical and planar near field ranges) across Europe in the ? ? ? ? ? ? ? ? activity. The purpose of this intercomparison campaign is the comparison of the different antenna measurement facilities, throughout Europe, considering measurement procedures and uncertainty estimates. The antenna has been simulated using a full CAD model, in step compatible format and using different numerical methods from different software vendors

Published
2015

15. Measurements and simulations correlation of high reliability reflector antenna

Author

Saporetti, M.A., primary, Foged, L.J., additional, Sierra- Castaner, M., additional, Jorgensen, E., additional, Voigt, T., additional, Michel, A., additional, Tallini, D., additional, Kolundzija, B., additional, Bottcher, M., additional, Wien, A., additional, Orefice, M., additional, Giordanengo, G., additional, Dassano, G., additional, Serna, J. M., additional, Catedra, F., additional, Somolinos, A., additional, Moreno, J., additional, and Gonzales, I., additional

Published
2016
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