Patents by Inventor Giovanni Toso

Giovanni Toso has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11502418
    Abstract: A beamforming network for use with a plurality of antenna elements arranged in a planar array of linear sub-arrays includes first and second sets of beamforming sub-networks. Each beamforming sub-network in the first set of beamforming sub-networks is associated with a respective one of the linear sub-arrays and is adapted to generate, via the associated linear sub-array, fan beams along respective beam directions in a first set of beam directions. Each beamforming sub-network in the second set of beamforming sub-networks is associated with a respective one of the beam directions in the first set of beam directions. For each beamforming sub-network in the second set of beamforming sub-networks, each of the output port is coupled to an input port of a respective beamforming sub-network in the first set of beamforming sub-networks that corresponds to the associated beam direction. The application further relates to a multibeam antenna comprising such beamforming network.
    Type: Grant
    Filed: June 5, 2018
    Date of Patent: November 15, 2022
    Assignee: European Space Agency
    Inventors: Piero Angeletti, Giovanni Toso
  • Publication number: 20210249782
    Abstract: A beamforming network for use with a plurality of antenna elements arranged in a planar array of linear sub-arrays includes first and second sets of beamforming sub-networks. Each beamforming sub-network in the first set of beamforming sub-networks is associated with a respective one of the linear sub-arrays and is adapted to generate, via the associated linear sub-array, fan beams along respective beam directions in a first set of beam directions. Each beamforming sub-network in the second set of beamforming sub-networks is associated with a respective one of the beam directions in the first set of beam directions. For each beamforming sub-network in the second set of beamforming sub-networks, each of the output port is coupled to an input port of a respective beamforming sub-network in the first set of beamforming sub-networks that corresponds to the associated beam direction. The application further relates to a multibeam antenna comprising such beamforming network.
    Type: Application
    Filed: June 5, 2018
    Publication date: August 12, 2021
    Inventors: Piero Angeletti, Giovanni Toso
  • Patent number: 10957989
    Abstract: A directional waveguide coupler (20) has four input ports and four output ports. Each input port is coupled to each of the output ports. The directional coupler (20) includes a first coupler having two waveguides (W1, W2) coupled to each other by a first slot array (S1), defined in a first wall (21) common to the two waveguides (W1, W2) of the first coupler. A second coupler has two waveguides (W3, W4), coupled to each other by a second slot array (S2), defined in a second wall (22) common to the two waveguides (W3, W4) of the second coupler. The first and second slot arrays (S1, S2) lie on a first common plane. The first and second couplers are coupled to each other by a third slot array (S3) and a fourth slot array (S4), which lie on a second common plane perpendicular to the first common plane.
    Type: Grant
    Filed: August 27, 2019
    Date of Patent: March 23, 2021
    Assignee: AIRBUS ITALIA S.P.A.
    Inventors: Alfredo Catalani, Fabio Maggio, Vincenzo Pascale, Piero Angeletti, Giovanni Toso, Daniele Petrolati
  • Publication number: 20200076091
    Abstract: A directional waveguide coupler (20) has four input ports and four output ports. Each input port is coupled to each of the output ports. The directional coupler (20) includes a first coupler having two waveguides (W1, W2) coupled to each other by a first slot array (S1), defined in a first wall (21) common to the two waveguides (W1, W2) of the first coupler. A second coupler has two waveguides (W3, W4), coupled to each other by a second slot array (S2), defined in a second wall (22) common to the two waveguides (W3, W4) of the second coupler. The first and second slot arrays (S1, S2) lie on a first common plane. The first and second couplers are coupled to each other by a third slot array (S3) and a fourth slot array (S4), which lie on a second common plane perpendicular to the first common plane.
    Type: Application
    Filed: August 27, 2019
    Publication date: March 5, 2020
    Inventors: Alfredo CATALANI, Fabio MAGGIO, Vincenzo PASCALE, Piero ANGELETTI, Giovanni TOSO, Daniele PETROLATI
  • Patent number: 10431900
    Abstract: A method of manufacturing an array antenna comprising: a design phase wherein an array layout of said array antenna is synthesized and radiating elements are designed to be arranged according to said array layout; and a phase of physically making said array antenna wherein the radiating elements are arranged according to said array layout.
    Type: Grant
    Filed: August 28, 2013
    Date of Patent: October 1, 2019
    Assignee: Agence Spatiale Europeenne
    Inventors: Piero Angeletti, Giovanni Toso, Gianfranco Ruggerini
  • Patent number: 10062966
    Abstract: A method for manufacturing an array antenna having a design phase, including synthesizing an array layout of the array antenna and choosing or designing radiating elements to be arranged according to the array layout; and a phase of physically making the array antenna, including arranging the radiating elements according to the array layout; the design phase having the steps of: a) synthesizing an array layout complying with a required minimum beamwidth, a required field of view, a required side lobe level and a target angular dependence of the maximum directivity of the array antenna over the required field of view; b) determining shaped radiation patterns of the radiating elements in order to approximate said target angular dependence of the maximum directivity of the array antenna over the required field of view; and c) choosing or designing radiating elements having the shaped radiation patterns determined at step b).
    Type: Grant
    Filed: April 12, 2011
    Date of Patent: August 28, 2018
    Assignee: Agence Spatiale Europeenne
    Inventors: Cyril Mangenot, Giovanni Toso, Carolina Tienda Herrero
  • Patent number: 9865936
    Abstract: An array antenna has rectangular conductor sections, located successively side by side in a first plane, mutually separated by slots of constant width. A backing reflector is transverse to the first plane. Feed structures extend through the backing reflector, the feed structures comprising pairs of parallel feed conductors, each pair comprising conductors coupled to the rectangular conductor sections on opposite sides of a respective one of the slots.
    Type: Grant
    Filed: April 14, 2009
    Date of Patent: January 9, 2018
    Assignee: Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek TNO
    Inventors: Andrea Neto, Daniele Cavallo, Giampiero Gerini, Reindert Grooters, Giovanni Toso
  • Patent number: 9742073
    Abstract: The application discloses a one or two dimensional array of electromagnetic scatterers n scatterers (ED), whereby the aforementioned scatterers (ED) are arranged aperiodically on a curved line or surface (S). Further, the application describes a reflectarray antenna comprising at least one such array of electromagnetic scatters (ED) and at least one receiving and/or transmitting feed (F), cooperating with said array to generate an antenna beam A method for designing and manufacturing sais array and said antenna is explained. The method optimizes in a several stages all degrees of freedom in order improve the performance of reflectarrays, increase the flexibility thereof and/or the conformity thereof with design specifications (radio pattern) and/or allowing said specifications to be satisfied with a smaller number of scatters.
    Type: Grant
    Filed: September 16, 2010
    Date of Patent: August 22, 2017
    Assignee: Agence Spatiale Europeenne
    Inventors: Amedeo Capozzoli, Claudio Curcio, Angelo Liseno, Giuseppe D'Elia, Pietro Vinetti, Giovanni Toso
  • Publication number: 20170179596
    Abstract: A wideband reflectarray antenna for dual polarizations application is formed by an array of phasing cells, where each cell contains two orthogonal or quasi-orthogonal sets of parallel conductive dipoles printed on two levels of a multilayered grounded substrate. The dipoles for each polarization are coupled in both horizontal and vertical directions, providing a large broadband operation and low cross-polarization with only two levels of metallizations. The antenna is designed by adjusting the lengths of the dipoles to produce the phase-shift required to collimate or shape the radiated beam in dual-polarization when illuminated by a feed, either in broadband or dual-frequency operation. The invention also relates to a design and manufacturing method for producing the reflectarray antenna, based on the optimization of the dipole lengths for each phasing cell.
    Type: Application
    Filed: April 30, 2014
    Publication date: June 22, 2017
    Applicant: AGENCE SPATIALE EUROP√ČENNE
    Inventors: Rafael Florencio Diaz, Jose' Antonio Encinar Garcinuno, Rafael Rodriguez Boix, Giovanni Toso
  • Publication number: 20160372835
    Abstract: An offset imaging antenna system with compensated optical aberrations comprises a main a paraboloid reflector, a first paraboloid sub reflector, and a first feeding array as an arrangement of first feed array elements to illuminate or to be illuminated by the first sub reflector. The main reflector and the first sub reflector are confocal by sharing a common focal point. The first feeding array has a curved shape that corresponds to a first equivalent array of magnified image feed elements lying on a plane crossing the main optical centre and perpendicular to the main bore-sight axis, all the first feed array elements being positioned as to provide a planar distribution of the positions of the image feed elements onto the first equivalent array after a second reflection by the main reflector with a central image point coinciding with the main reflector optical centre under a maximum illumination condition.
    Type: Application
    Filed: March 5, 2014
    Publication date: December 22, 2016
    Applicant: AGENCE SPATIALE EUROPEENNE
    Inventors: Giovanni Toso, Christian Sciannella
  • Patent number: 9374145
    Abstract: A beam-forming network for an emitting array antenna having at least NB input ports connected to respective beam ports of the beam-forming network and at least NOSA>1 output ports, for associating to each output port a linear combination of input signals from respective input ports; a set of at least NOSA lossless single-mode networks, each having an input port connected to a respective output port of multi-beam network and at least NNOSAOSA>1 output ports, for associating to each output port a signal obtained by weighting an input signal from the input port; and a set of at least NNOSA?NNOSAOSA lossless multi-mode networks, each having at least NNOSAOSA NOSANOSA input ports, each one connected to an output port of a respective single-mode network, and at least NENOSA>1 output ports connected to respective antenna ports of the beam-forming network, for associating to each output port a linear combination of input signals from respective input ports.
    Type: Grant
    Filed: November 26, 2012
    Date of Patent: June 21, 2016
    Assignee: Agence Spatiale Europeenne
    Inventors: Piero Angeletti, Giovanni Toso, Daniele Petrolati
  • Publication number: 20150341098
    Abstract: A beam-forming network for an emitting array antenna having at least NB input ports connected to respective beam ports of the beam-forming network and at least NOSA>1 output ports, for associating to each output port a linear combination of input signals from respective input ports; a set of at least NOSA lossless single-mode networks, each having an input port connected to a respective output port of multi-beam network and at least NNOSAOSA>1 output ports, for associating to each output port a signal obtained by weighting an input signal from the input port; and a set of at least NNOSA?NNOSAOSA lossless multi-mode networks, each having at least NNOSAOSA NOSANOSA input ports, each one connected to an output port of a respective single-mode network, and at least NENOSA>1 output ports connected to respective antenna ports of the beam-forming network, for associating to each output port a linear combination of input signals from respective input ports.
    Type: Application
    Filed: November 26, 2012
    Publication date: November 26, 2015
    Inventors: Piero Angeletti, Giovanni Toso, Daniele Petrolati
  • Publication number: 20150333412
    Abstract: A method of manufacturing an array antenna comprising: a design phase wherein an array layout of said array antenna is synthesized and radiating elements are designed to be arranged according to said array layout; and a phase of physically making said array antenna wherein the radiating elements are arranged according to said array layout.
    Type: Application
    Filed: August 28, 2013
    Publication date: November 19, 2015
    Inventors: Piero Angeletti, Giovanni Toso, Gianfranco Ruggerini
  • Publication number: 20140104107
    Abstract: A method for manufacturing an array antenna having a design phase, including synthesizing an array layout of the array antenna and choosing or designing radiating elements to be arranged according to the array layout; and a phase of physically making the array antenna, including arranging the radiating elements according to the array layout; the design phase having the steps of: a) synthesizing an array layout complying with a required minimum beamwidth, a required field of view, a required side lobe level and a target angular dependence of the maximum directivity of the array antenna over the required field of view; b) determining shaped radiation patterns of the radiating elements in order to approximate said target angular dependence of the maximum directivity of the array antenna over the required field of view; and c) choosing or designing radiating elements having the shaped radiation patterns determined at step b).
    Type: Application
    Filed: April 12, 2011
    Publication date: April 17, 2014
    Applicant: AGENCE SPATIALE EUROPEENNE
    Inventors: Cyril Mangenot, Giovanni Toso, Carolina Tienda Herrero
  • Patent number: 8358249
    Abstract: A multibeam antenna comprising: a plurality of primary radiating elements, each associated to a respective beam; and an active radiating structure comprising a first planar array of radiating elements, a second planar array composed by a same number of radiating elements, a set of connections between each radiating element of the first planar array and one corresponding element of the second planar array, and a set of power amplifiers for amplifying signals transmitted through said connections; wherein: the relative positions of the radiating elements of the first and second planar arrays and phase delays introduced by said connections are such that the radiating structure forms an active discrete converging lens; and said primary radiating elements are clustered on a focal surface of said lens, facing the first planar array; characterized in that said first and second planar arrays are both aperiodic. A method of manufacturing such an antenna.
    Type: Grant
    Filed: December 18, 2009
    Date of Patent: January 22, 2013
    Assignee: Agence Spatiale Europeenne
    Inventors: Giovanni Toso, Piero Angeletti, Gianfranco Ruggerini, Giancarlo Bellaveglia
  • Publication number: 20120268340
    Abstract: The application discloses a one or two dimensional array of electromagnetic scatterers n scatterers (ED), whereby the aforementioned scatterers (ED) are arranged aperiodically on a curved line or surface (S). Further, the application describes a reflectarray antenna comprising at least one such array of electromagnetic scatters (ED) and at least one receiving and/or transmitting feed (F), cooperating with said array to generate an antenna beam A method for designing and manufacturing said array and said antenna is explained. The method optimizes in a several stages all degrees of freedom in order improve the performance of reflectarrays, increase the flexibility thereof and/or the conformity thereof with design specifications (radio pattern) and/or allowing said specifications to be satisfied with a smaller number of scatters.
    Type: Application
    Filed: September 16, 2010
    Publication date: October 25, 2012
    Applicant: AGENCE SPATIALE EUROPEENNE
    Inventors: Amedeo Capozzoli, Claudio Curcio, Angelo Liseno, Giuseppe D'Elia, Pietro Vinetti, Giovanni Toso
  • Publication number: 20110156976
    Abstract: An array antenna with high suppression of cross-polarization has rectangular conductor sections, located successively side by side in a first plane, mutually separated by slots of constant width. A backing reflector transverse to said first plane. Feed structures extend through the backing reflector, the feed structures comprising pairs of parallel feed conductors, each pair comprising conductors coupled to the rectangular conductor sections on opposite sides of a respective one of the slots.
    Type: Application
    Filed: April 14, 2009
    Publication date: June 30, 2011
    Inventors: Andrea Neto, Daniele Cavallo, Giampiero Gerini, Reindert Grooters, Giovanni Toso
  • Patent number: 7797816
    Abstract: A method of manufacturing an array antenna including a designing step which comprises: determining a one-dimensional reference radiation pattern and an associated reference aperture; computing the cumulative phasorial summation of the field distribution of said reference aperture in a reference direction and representing it as a reference curve in the complex plane; determining a polygonal curve optimally approximating said reference curve, subject to predetermined constraints; and determining, from said polygonal curve, an antenna array pattern, each side of said polygonal curve being associated to a particular antenna element of the array.
    Type: Grant
    Filed: February 21, 2008
    Date of Patent: September 21, 2010
    Assignee: Agence Spatiale Europeenne
    Inventors: Giovanni Toso, Piero Angeletti
  • Publication number: 20100207833
    Abstract: A multibeam antenna comprising: a plurality of primary radiating elements, each associated to a respective beam; and an active radiating structure comprising a first planar array of radiating elements, a second planar array composed by a same number of radiating elements, a set of connections between each radiating element of the first planar array and one corresponding element of the second planar array, and a set of power amplifiers for amplifying signals transmitted through said connections; wherein: the relative positions of the radiating elements of the first and second planar arrays and phase delays introduced by said connections are such that the radiating structure forms an active discrete converging lens; and said primary radiating elements are clustered on a focal surface of said lens, facing the first planar array; characterized in that said first and second planar arrays are both aperiodic. A method of manufacturing such an antenna.
    Type: Application
    Filed: December 18, 2009
    Publication date: August 19, 2010
    Inventors: Giovanni Toso, Piero Angeletti, Gianfranco Ruggerini, Giancarlo Bellaveglia
  • Publication number: 20090211079
    Abstract: A method of manufacturing an array antenna including a designing step which comprises: determining a one-dimensional reference radiation pattern and an associated reference aperture; computing the cumulative phasorial summation of the field distribution of said reference aperture in a reference direction and representing it as a reference curve in the complex plane; determining a polygonal curve optimally approximating said reference curve, subject to predetermined constraints; and determining, from said polygonal curve, an antenna array pattern, each side of said polygonal curve being associated to a particular antenna element of the array.
    Type: Application
    Filed: February 21, 2008
    Publication date: August 27, 2009
    Inventors: Giovanni Toso, Piero Angeletti