Yagoubov, PavelPavelYagoubovGonzalez, A.A.GonzalezTapia, V.V.TapiaReyes, N.N.ReyesMena, F. P.F. P.MenaNESTI, RenzoRenzoNESTI0000-0003-0303-839XCUTTAIA, FRANCESCOFRANCESCOCUTTAIA0000-0001-6608-5017RICCIARDI, SARASARARICCIARDI0000-0002-3807-4043VILLA, FABRIZIOFABRIZIOVILLA0000-0003-1798-861X2020-05-052020-05-052016978-1-4673-8485-8978-1-4673-8486-5http://hdl.handle.net/20.500.12386/24522In this paper we report the first results of the optical components development and the overall optical design for a wideband receiver to simultaneously cover ALMA bands 2 and 3. Two types of feed horns and OMTs have been designed to couple to the ALMA telescope beam using a modified Fresnel lens. Both types of hardware have been manufactured and tested in a near field beam scanner. The measured beam patterns and optical efficiencies are in good agreement with simulations.ELETTRONICOenConference paper10.1109/IRMMW-THz.2016.77589712-s2.0-85006173274https://ieeexplore.ieee.org/document/77589712016imtw.confE...2YFIS/05 - ASTRONOMIA E ASTROFISICAScienze Fisiche Settori ERC (ERC) di riferimento::PE9 Universe sciences: astro-physics/chemistry/biology; solar systems; stellar, galactic and extragalactic astronomy, planetary systems, cosmology, space science, instrumentation::PE9_17 Instrumentation – telescopes, detectors and techniques