Patents by Inventor Ségolène TUBAU
Ségolène TUBAU 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).
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Publication number: 20240128654Abstract: A quasi-optical beamformer includes a plurality N> 1 of power feeds (PF), each of the i?[1; N] power feeds (PF) being configured to emit a respective radio-frequency beam denoted Ri, a radio-frequency transmission line (LT) fed at a first end by the power feeds and comprising at a second end a plurality of network ports (PR) that are configured to collect radio-frequency radiation, the transmission line (LT) comprising a radio-frequency waveguide (GO) that comprises at least two metal plates (PM) that are stacked so as to guide the radio-frequency beams Ri, i?[1; N] towards the network ports (PR), the transmission line (LT) extending along a central main axis denoted axis x, a first reflector (M1) having a first centre (C1) centred on the axis x and a first effective radius of curvature and being configured to reflect the guided radio-frequency beams Ri, i?[1; N], a second reflector (M2) having a second effective radius of curvature and being configured to reflect the radio-frequency beams (RFi) reflectedType: ApplicationFiled: October 12, 2023Publication date: April 18, 2024Inventors: Jean-Philippe FRAYSSE, Léonin LASSAUCE, Ségolène TUBAU, Mauro ETTORRE, Hervé LEGAY
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Publication number: 20230238710Abstract: A quasi-optical beam former includes a set of beam ports, a set of network ports, a quasi-optical device and at least one parallel-plate waveguide extending between the beam ports and the network ports, the beam ports and/or the network ports being superposed in at least two stages, each of the at least two stages being separated by a conductive plane common to two adjacent stages, the quasi-optical beam former comprising a resistive film placed in the continuity of the conductive plane.Type: ApplicationFiled: January 26, 2023Publication date: July 27, 2023Inventors: Jean-Philippe FRAYSSE, Léonin LASSAUCE, Ségolène TUBAU, Hervé LEGAY
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Patent number: 11476553Abstract: An orthomode transducer and to a satellite transmission chain includes the orthomode transducer, for transmitting a first signal and a second signal in orthogonal propagation modes. The transducer comprises: a primary waveguide with a square or rectangular cross section, two guided access means having firstly a free end via which the first signal and the second signal are respectively injected or recovered, and secondly two arms connected to the primary waveguide. Each guided access means comprises a junction configured so as to connect the free end to the two arms of the guided access means, the two arms of each guided access means being connected to the primary waveguide at two off-centred locations on one or more sides of the primary waveguide symmetrically about an axis of symmetry of the primary waveguide.Type: GrantFiled: May 11, 2021Date of Patent: October 18, 2022Assignee: THALESInventors: Laurent Bru, Pierre Bosshard, Ségolène Tubau, Erwan Cartaillac, Nicolas Ferrando
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Patent number: 11444384Abstract: A radiating element includes at least two feeding guides and one horn common to at least two feeding guides and having an excitation interface, each feeding guide comprising a port guide and an excitation guide connected to the port guide by a port interface and connected to the common horn by the excitation interface, each excitation guide being flared in the direction from the port interface to the excitation interface, each excitation guide not having an axis of symmetry, the two feeding guides being disposed symmetrically relative to one another.Type: GrantFiled: December 2, 2019Date of Patent: September 13, 2022Assignee: THALESInventors: Jean-Philippe Fraysse, Charalampos Stoumpos, Hervé Legay, Ségolène Tubau
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Publication number: 20210359383Abstract: An orthomode transducer and to a satellite transmission chain includes the orthomode transducer, for transmitting a first signal and a second signal in orthogonal propagation modes. The transducer comprises: a primary waveguide with a square or rectangular cross section, two guided access means having firstly a free end via which the first signal and the second signal are respectively injected or recovered, and secondly two arms connected to the primary waveguide. Each guided access means comprises a junction configured so as to connect the free end to the two arms of the guided access means, the two arms of each guided access means being connected to the primary waveguide at two off-centred locations on one or more sides of the primary waveguide symmetrically about an axis of symmetry of the primary waveguide.Type: ApplicationFiled: May 11, 2021Publication date: November 18, 2021Inventors: Laurent BRU, Pierre BOSSHARD, Ségolène TUBAU, Erwan CARTAILLAC, Nicolas FERRANDO
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Publication number: 20200176878Abstract: A radiating element includes at least two feeding guides and one horn common to at least two feeding guides and having an excitation interface, each feeding guide comprising a port guide and an excitation guide connected to the port guide by a port interface and connected to the common horn by the excitation interface, each excitation guide being flared in the direction from the port interface to the excitation interface, each excitation guide not having an axis of symmetry, the two feeding guides being disposed symmetrically relative to one another.Type: ApplicationFiled: December 2, 2019Publication date: June 4, 2020Inventors: Jean-Philippe FRAYSSE, Charalampos STOUMPOS, Hervé LEGAY, Ségolène TUBAU
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Patent number: 10673118Abstract: A compact bipolarization is provided power dividers for a radiofrequency power source. The divider according to the invention includes four identical orthomode transducers, eight identical waveguides, each waveguide comprising two bends, four identical T-shaped junctions, four identical twists and two power distributors; the four orthomode transducers being of parallelepipedal shape with a square base, each transducer comprising, on each of two adjacent lateral faces, a waveguide connected to the lower face of the transducer; the four transducers being positioned so as to form a square, each transducer being connected to two junctions that are perpendicular to one another, the set of four junctions forming a Greek cross; each pair of junctions that are situated in one and the same plane being connected, by way of two twists, to the two outputs of a power distributor comprising a single input.Type: GrantFiled: September 13, 2018Date of Patent: June 2, 2020Assignee: THALESInventors: Jean-Philippe Fraysse, Hervé Legay, Ségolène Tubau
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Patent number: 10553957Abstract: A quasi-optical beamformer includes a power distributor composed of a succession of parallel-plate dividers extending in a YZ-plane from a first stage to a last stage, each parallel-plate divider comprising, in each of the stages of the corporate structure located under a higher stage, first and second parallel-plate waveguide branches leading to respective parallel-plate dividers of the following stage of the corporate structure, the beamformer furthermore including a plurality of lenses extending longitudinally along the X-axis in at least one stage of the power distributor, so as to apply a delay that is continuously variable along the X-axis, the lenses being placed in each of the branches of the dividers of at least one stage in the power distributor.Type: GrantFiled: July 26, 2018Date of Patent: February 4, 2020Assignee: THALESInventors: Ségolène Tubau, Hervé Legay, Etienne Girard, Jean-Philippe Fraysse
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Patent number: 10381699Abstract: An excitation assembly comprises a symmetrical OMT and two splitters respectively connected to two pathways of the OMT. The OMT comprises a cross junction comprising a central waveguide parallel to an axis Z and four lateral ports oriented in two directions X, Y, the first splitter consisting of an input waveguide and of two output ports coupled to two lateral ports, oriented in the direction X, by respective connection waveguides. The first splitter is located on a lateral side of the OMT, orthogonally to the direction X, and its two output ports are formed one above the other in a lateral wall of the input waveguide, the upper output port being placed facing a first lateral port of the OMT to which it is connected by the first connection waveguide. The difference in electrical length between the two connection waveguides is equal to ?/2.Type: GrantFiled: December 5, 2016Date of Patent: August 13, 2019Assignee: THALESInventors: Jean-Philippe Fraysse, Ségolène Tubau, François Doucet, Hervé Legay, Renaud Chiniard
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Publication number: 20190097296Abstract: A compact bipolarization is provided power dividers for a radiofrequency power source. The divider according to the invention includes four identical orthomode transducers, eight identical waveguides, each waveguide comprising two bends, four identical T-shaped junctions, four identical twists and two power distributors; the four orthomode transducers being of parallelepipedal shape with a square base, each transducer comprising, on each of two adjacent lateral faces, a waveguide connected to the lower face of the transducer; the four transducers being positioned so as to form a square, each transducer being connected to two junctions that are perpendicular to one another, the set of four junctions forming a Greek cross; each pair of junctions that are situated in one and the same plane being connected, by way of two twists, to the two outputs of a power distributor comprising a single input.Type: ApplicationFiled: September 13, 2018Publication date: March 28, 2019Inventors: Jean-Philippe FRAYSSE, Hervé LEGAY, Ségolène TUBAU
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Publication number: 20190036228Abstract: A quasi-optical beamformer includes a power distributor composed of a succession of parallel-plate dividers extending in a YZ-plane from a first stage to a last stage, each parallel-plate divider comprising, in each of the stages of the corporate structure located under a higher stage, first and second parallel-plate waveguide branches leading to respective parallel-plate dividers of the following stage of the corporate structure, the beamformer furthermore including a plurality of lenses extending longitudinally along the X-axis in at least one stage of the power distributor, so as to apply a delay that is continuously variable along the X-axis, the lenses being placed in each of the branches of the dividers of at least one stage in the power distributor.Type: ApplicationFiled: July 26, 2018Publication date: January 31, 2019Inventors: Ségolène TUBAU, Hervé LEGAY, Etienne GIRARD, Jean-Philippe FRAYSSE
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Patent number: 10135150Abstract: A beamformer comprises a transmission line fed by at least one input feed source, the transmission line comprising two stacked metal plates extending, along two directions, longitudinal X and transverse Y. The transmission line further comprises at least one protuberance extending in the directions X, Y, and in a direction Z orthogonal to the plane XY, the protuberance comprising a metal insert extending in the directions X and Y and extending height-wise in the direction Z, the insert comprising a base fastened to one of the two metal plates and a free end and having a contour of variable length between the two lateral edges of the transmission line. In the protuberance, the transmission line is adjoining the insert and forms, in the direction Z, a circumvolution around the insert.Type: GrantFiled: June 28, 2016Date of Patent: November 20, 2018Assignees: THALES, UNIVERSITE DE RENNES 1, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUEInventors: Hervé Legay, Ségolène Tubau, Jean-Philippe Fraysse, Etienne Girard, Mauro Ettorre, Ronan Sauleau, Nelson Fonseca
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Publication number: 20170170570Abstract: An excitation assembly comprises a symmetrical OMT and two splitters respectively connected to two pathways of the OMT. The OMT comprises a cross junction comprising a central waveguide parallel to an axis Z and four lateral ports oriented in two directions X, Y, the first splitter consisting of an input waveguide and of two output ports coupled to two lateral ports, oriented in the direction X, by respective connection waveguides. The first splitter is located on a lateral side of the OMT, orthogonally to the direction X, and its two output ports are formed one above the other in a lateral wall of the input waveguide, the upper output port being placed facing a first lateral port of the OMT to which it is connected by the first connection waveguide. The difference in electrical length between the two connection waveguides is equal to ?/2.Type: ApplicationFiled: December 5, 2016Publication date: June 15, 2017Inventors: Jean-Philippe FRAYSSE, Ségolène TUBAU, François DOUCET, Hervé LEGAY, Renaud CHINIARD
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Publication number: 20170005407Abstract: A beamformer comprises a transmission line fed by at least one input feed source, the transmission line comprising two stacked metal plates extending, along two directions, longitudinal X and transverse Y. The transmission line further comprises at least one protuberance extending in the directions X, Y, and in a direction Z orthogonal to the plane XY, the protuberance comprising a metal insert extending in the directions X and Y and extending height-wise in the direction Z, the insert comprising a base fastened to one of the two metal plates and a free end and having a contour of variable length between the two lateral edges of the transmission line. In the protuberance, the transmission line is adjoining the insert and forms, in the direction Z, a circumvolution around the insert.Type: ApplicationFiled: June 28, 2016Publication date: January 5, 2017Inventors: Hervé LEGAY, Ségolène TUBAU, Jean-Philippe FRAYSSE, Etienne GIRARD, Mauro ETTORRE, Ronan SAULEAU, Nelson FONSECA