Patents by Inventor Gerard Raguenet
Gerard Raguenet 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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Patent number: 8976072Abstract: A flat scanning antenna comprises at least one slotted waveguide array comprising two dielectric substrates, one superposed above the other. The two substrates comprise the same number of waveguides, which are in mutual correspondence and communicate between them, pairwise, via corresponding coupling slots. Each waveguide of the upper substrate further includes a plurality of radiating slots, all the radiating slots being mutually parallel and oriented in the same direction and each waveguide of the lower substrate includes an individual internal supply circuit comprising an individual phase-shift/amplification electronic circuit.Type: GrantFiled: January 17, 2011Date of Patent: March 10, 2015Assignee: ThalesInventors: Regis Lenormand, Jean-Michel Merour, Jean-Michel Mateus, Ronan Sauleau, Mauro Ettorre, Gerard Raguenet
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Patent number: 8797223Abstract: An antenna system is able to cover a geographical zone with two grids of spots with nested meshes, shifted one with respect to the other. The multi-beam system covers a geographical zone decomposed into a plurality of spots, the antennas each comprising an array of radiating elements able to receive and/or to transmit radioelectric signals, and being configured so as to cover, in reception and/or in transmission, the zone with two grids of spots, several spots of the first grid, generated by a first antenna, being positioned according to a first geometric pattern, so that points are situated substantially equidistantly from several adjacent spots, several spots of the second grid, that are generated by a second antenna, being positioned according to a second geometric pattern chosen as a function of the first geometric pattern, such that several spots of the second grid are centered on the points.Type: GrantFiled: September 23, 2011Date of Patent: August 5, 2014Assignee: ThalesInventors: Gérard Raguenet, Thierry Youssefi, Michel Salomon, Etienne Barritault, Didier Le Boulch
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Publication number: 20120287006Abstract: A flat scanning antenna comprises at least one slotted waveguide array comprising two dielectric substrates, one superposed above the other. The two substrates comprise the same number of waveguides, which are in mutual correspondence and communicate between them, pairwise, via corresponding coupling slots. Each waveguide of the upper substrate further includes a plurality of radiating slots, all the radiating slots being mutually parallel and oriented in the same direction and each waveguide of the lower substrate includes an individual internal supply circuit comprising an individual phase-shift/amplification electronic circuit.Type: ApplicationFiled: January 17, 2011Publication date: November 15, 2012Applicant: THALESInventors: Regis Lenormand, Jean-Michel Merour, Jean-Michel Mateus, Ronan Sauleau, Mauro Ettorre, Gerard Raguenet
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Patent number: 8299963Abstract: The antenna with shared feeds for generating multiple beams includes a plurality of identical individual feeds spaced apart by a constant pitch, wherein the individual feeds are associated in identical subnetworks around a central individual feed, each subnetwork being intended to synthesize a beam, the individual feeds of each subnetwork being phase-coupled together by electromagnetic coupling, and two successive subnetworks include at least one individual feed in common and are offset by a distance corresponding to a predetermined number of pitches greater than or equal to one, being applicable in particular to the field of satellite telecommunications.Type: GrantFiled: December 3, 2009Date of Patent: October 30, 2012Assignee: ThalesInventor: Gérard Raguenet
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Publication number: 20120075150Abstract: An antenna system is able to cover a geographical zone with two grids of spots with nested meshes, shifted one with respect to the other. The multi-beam system covers a geographical zone decomposed into a plurality of spots, the antennas each comprising an array of radiating elements able to receive and/or to transmit radioelectric signals, and being configured so as to cover, in reception and/or in transmission, said zone with two grids of spots, several spots of the first grid, generated by a first antenna, being positioned according to a first geometric pattern, so that points are situated substantially equidistantly from several adjacent spots, several spots of the second grid, that are generated by a second antenna, being positioned according to a second geometric pattern chosen as a function of the first geometric pattern, such that several spots of the second grid are centred on the said points.Type: ApplicationFiled: September 23, 2011Publication date: March 29, 2012Applicant: THALESInventors: Gérard RAGUENET, Thierry YOUSSEFI, Michel SALOMON, Etienne BARRITAULT, Didier LE BOULCH
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Publication number: 20100309050Abstract: The antenna with shared feeds for generating multiple beams includes a plurality of identical individual feeds spaced apart by a constant pitch, wherein the individual feeds are associated in identical subnetworks around a central individual feed, each subnetwork being intended to synthesize a beam, the individual feeds of each subnetwork being phase-coupled together by electromagnetic coupling, and two successive subnetworks include at least one individual feed in common and are offset by a distance corresponding to a predetermined number of pitches greater than or equal to one, being applicable in particular to the field of satellite telecommunications.Type: ApplicationFiled: December 3, 2009Publication date: December 9, 2010Applicant: ThalesInventor: Gérard Raguenet
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Publication number: 20080298439Abstract: A device (D) is dedicated to the processing of data by spread spectrum coding for a multi-beam communication satellite (S), each beam (B1-B6) of which is associated with a terrestrial cell (C1-C6) contained in a satellite coverage zone (ZC).Type: ApplicationFiled: September 22, 2006Publication date: December 4, 2008Inventors: Olivier Courseille, Catherine Dargeou, Pascal Aubert, Gerard Raguenet
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Patent number: 6091373Abstract: A feed device for a radiating element operating in dual polarization, for use especially in the field of space transmission, comprises a first feed line penetrating into a first cavity located beneath said radiating element, and a second feed line disposed in a configuration orthogonal to the first line and penetrating into a second cavity located in line with the first, a conductive part forming a coupling slot between the two cavities.Type: GrantFiled: April 8, 1993Date of Patent: July 18, 2000Assignee: Alcatel EspaceInventor: Gerard Raguenet
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Patent number: 5539420Abstract: A plane antenna suitable for space applications in particular comprises a passive resonator coupled to a feedline by a looped slot.Type: GrantFiled: June 30, 1994Date of Patent: July 23, 1996Assignee: Alcatel EspaceInventors: Thierry Dusseux, Michel Gomez-Henry, Michel Lairle, Gerard Raguenet
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Patent number: 5489913Abstract: A miniaturized radio antenna element for use at VHF and UHF is designed to operate well short of resonance. It comprises a small flat cavity in the surface of which is formed at least one radiating slot very much smaller than a normal resonant slot. However, an impedance matching circuit is often required at the ports of this antenna.Type: GrantFiled: September 21, 1994Date of Patent: February 6, 1996Assignee: Alcatel EspaceInventors: Gerard Raguenet, Michel Gomez-Henry
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Broadband cavity-like array antenna element and a conformal array subsystem comprising such elements
Patent number: 5434581Abstract: The invention concerns a broadband antenna element for array antennas using microstrip technology. In accordance with the invention, an etched patch 2 on a dielectric substrate 1 is disposed at the bottom of a cavity 7 defined by conductive walls 8, cylindrical walls, for example, or walls of more complicated geometry. Depending on the embodiment, the conductive walls 8 can extend through the dielectric substrate 1 to form an electric contact with the ground plane 6 or a second resonator comprising a second etched patch 12 on a second thin dielectric substrate 11 may be placed in front of the cavity 7. The invention also applies to antenna subarrays constructed from a plurality of these antenna elements and to array antennas constructed from a plurality of these subarrays.Type: GrantFiled: November 16, 1993Date of Patent: July 18, 1995Assignee: Alcatel N.V. Societe DiteInventors: Gerard Raguenet, Frederic Magnin -
Patent number: 5434580Abstract: A multifrequency radiating device comprising at least one radiating element (11) of a first type and at least one radiating element (12) of a second type, the elements being associated on a common surface (10) in order to constitute an array antenna. The radiating elements of the first type (16) are elements of the microstrip type and the elements of the second type (19, 20) are elements of the wire type, the radiating elements of the first type (16) acting in a first frequency range and the radiating elements of the second type (19, 20) acting in a second frequency range. The invention is particularly applicable to microwave antennas.Type: GrantFiled: February 12, 1993Date of Patent: July 18, 1995Assignee: Alcatel EspaceInventors: Gerard Raguenet, Regis Lenormand, Michel Gomez-Henry, Alain Gergondey
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Patent number: 5248980Abstract: Spacecraft payload architecture which includes an array (10) of radiating elements preceded by an amplification stage (17) and a focusing optical system (11), characterized in that the architecture is adapted to a telecommunication mission by taking into account the overall requirements of the system, namely the radiation performance required for the mission, efficient rating of the amplification stage and attractive overall balances.Type: GrantFiled: April 3, 1992Date of Patent: September 28, 1993Assignee: Alcatel EspaceInventor: Gerard Raguenet
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Patent number: 5227749Abstract: The invention relates to a structure for making microwave circuits and components, in which the mechanical and electrical functions are integrated overall but dissociated locally. The invention is particularly suitable for space applications.Type: GrantFiled: May 24, 1990Date of Patent: July 13, 1993Assignee: Alcatel EspaceInventors: Gerard Raguenet, Olivier Remondiere
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Patent number: 5220334Abstract: The present invention relates to a multifrequency antenna comprising a microstrip patch first antenna (10, 11, 12) operating at one or more frequencies, and a second antenna (17) disposed in front of the antenna and using the same radiating surface and operating at a different frequency. The invention is applicable, in particular, to space telecommunications.Type: GrantFiled: February 13, 1989Date of Patent: June 15, 1993Assignee: Alcatel EspaceInventors: Gerard Raguenet, Regis Lenormand
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Patent number: 5212462Abstract: The present invention relates to a stripline microwave module comprising: at least one first line situated in a first plane; at least one second line; and at least one coupling opening situated in a second plane so as to enable transmission to take place between the two lines. The invention is particularly suitable for space applications.Type: GrantFiled: July 3, 1991Date of Patent: May 18, 1993Assignee: Alcatel EspaceInventors: Michel Gomez-Henry, Michel Salvan, Michel Lairle, Gerard Raguenet
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Patent number: 5039992Abstract: The invention relates to a space reentry vehicle high-temperature skin antenna comprising a printed antenna embedded in a tile for providing thermal protection, and fed by electromagnetic coupling. The invention is particularly applicable to space telecommunications.Type: GrantFiled: May 22, 1990Date of Patent: August 13, 1991Assignee: Alcatel EspaceInventors: Regis Lenormand, Michel Coustere, Gerard Raguenet, Olivier Remondiere
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Patent number: 4965587Abstract: The present invention relates to an antenna which is electronically reconfigurable in transmission. The antenna comprises an array (11) of elementary sources, an energy-focusing reflector (10), with the array (11) being situated in the focal zone of the reflector, and control and feed electronics, the electronics comprising an amplifier stage (22) constituted by amplifiers (24) and including at least one generalized coupler disposed at the outputs of the amplifiers (24), and beam-forming circuits (20, 21) each corresponding to a transmitted beam, with the amplitude and relative phase of the signals leaving said circuits being controlled by respective adjustable phase shifters and adjustable attenuators. The invention is particularly applicable to space telecommunications.Type: GrantFiled: March 20, 1989Date of Patent: October 23, 1990Assignee: Societe Anonyme dite: Alcatel EspaceInventors: Regis Lenormand, Marcel Billand, Pierre Fraise, Jean-Claude Goupil, Gerard Raguenet, Didier Rene
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Patent number: 4965588Abstract: The invention relates to an electronically scanned antenna comprising an array (11) of elementary sources, an energy-focusing reflector (10), and feed and control electronics; the array (11) is situated in the focal zone of the reflector, while the feed and control electronics includes a plurality of attenuator and phase shifter circuits (24) controlled by a control unit (27), with said circuits having their outputs connected to at least one combiner (28). The invention is particularly suitable for space telecommunications.Type: GrantFiled: March 20, 1989Date of Patent: October 23, 1990Assignee: Societe Anonyme dite : Alcatel EspaceInventors: Regis Lenormand, Antoine Clerino, Jacques Neron, Jean-Philippe Marre, Gerard Raguenet
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Patent number: 4757281Abstract: The invention relates to a rotary microwave joint device comprising a main circular waveguide constituted by two portions (10, 11) situated as extensions to each other and rotatable relative to one another about their axis of symmetry, each of said two portions (10, 11) being provided with at least one access which is orthogonal thereto, and mechanical means enabling a circularly polarized wave to be obtained in the main waveguide. The invention is applicable to space telecommunications.Type: GrantFiled: April 22, 1987Date of Patent: July 12, 1988Assignee: Alcatel EspaceInventors: Jean-Claude Anne, Philippe Gourlain, Regis Lenormand, Gerard Raguenet