Patents by Inventor Stéphane Mallegol
Stéphane Mallegol 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: 20230352844Abstract: A horn antenna including a ground plane delimiting an upper half-space, a horn forming one end of a waveguide, the horn crossing through the ground plane so that a mouth of the horn is arranged at a predetermined height above the ground plane in the upper half-space. The antenna is characterized in that it includes at least one resistive film arranged around the horn, parallel to an upper face of the ground plane, the resistive film having an electrical resistance suitable for limiting creeping waves.Type: ApplicationFiled: April 20, 2023Publication date: November 2, 2023Inventors: Stéphane MALLEGOL, Yoann HENAFF
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Publication number: 20230198157Abstract: The disclosed antenna includes: a radiating element disposed in a radiating plane transverse to an axis of the antenna; a reflecting plane, which is transverse to the axis, the radiating plane being located at a predetermined height above the reflecting plane; and a substrate, interposed between the radiating plane and the reflecting plane, and having a constant thickness. This antenna is characterized by a local relative electrical permittivity of the substrate that is a function of the radius, i.e. the distance to the axis, and a height, i.e. a distance to the reflecting plane, the local relative electrical permittivity being, at constant height, increasing as a function of the radius, and, at constant radius, increasing as a function of the height at least for a portion of the substrate in the vicinity of the reflecting plane.Type: ApplicationFiled: December 19, 2022Publication date: June 22, 2023Inventors: Jefferson CHAMPION, Stéphane MALLEGOL, Ismaël PELE, Erwan GORON, Jessica BENEDICTO, Noham Guy, Philippe MARTIN, Rozenn ALLANIC, Cédric QUENDO
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Patent number: 11509062Abstract: The invention relates to a wire antenna adapted to operate in at least one predetermined frequency band, comprising a plurality of superimposed layers, comprising at least one radiating element placed on a support layer, wherein the support layer is placed on a spacer substrate, and wherein the spacer substrate is placed on a reflector plane comprising at least one resistive layer between the support layer of the radiating element(s) and the substrate spacer, while the resistive layer comprises at least two sets of nested resistive patterns. This antenna is such that the sets of resistive patterns have resistance values gradually varying between a central antenna point and an outer edge of the antenna, in order to achieve a resistance gradient.Type: GrantFiled: June 9, 2017Date of Patent: November 22, 2022Assignee: THALESInventors: Stéphane Mallegol, Michel Jousset, Pierre Belec
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Patent number: 11495887Abstract: The invention relates to a wire antenna suitable for operating in at least one frequency band, including a plurality of stacked layers, including at least one radiating element placed on a support layer, said support layer being placed on a spacing substrate placed on a reflective plane, characterised in that it includes at least one resistive grille having a resistive surface with predetermined resistance, including at least one set of repetitive, non-contiguous empty patterns, said grille being placed between the spacing substrate and the reflective plane.Type: GrantFiled: May 3, 2019Date of Patent: November 8, 2022Assignee: THALESInventors: Stéphane Mallegol, Pierre Belec, Yoann Henaff
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Publication number: 20210126374Abstract: The invention relates to a wire antenna suitable for operating in at least one frequency band, including a plurality of stacked layers, including at least one radiating element placed on a support layer, said support layer being placed on a spacing substrate placed on a reflective plane, characterised in that it includes at least one resistive grille having a resistive surface with predetermined resistance, including at least one set of repetitive, non-contiguous empty patterns, said grille being placed between the spacing substrate and the reflective plane.Type: ApplicationFiled: May 3, 2019Publication date: April 29, 2021Inventors: Stéphane MALLEGOL, Pierre BELEC, Yoann HENAFF
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Publication number: 20200044356Abstract: The invention relates to a wire antenna adapted to operate in at least one predetermined frequency band, comprising a plurality of superimposed layers, comprising at least one radiating element placed on a support layer, wherein the support layer is placed on a spacer substrate, and wherein the spacer substrate is placed on a reflector plane comprising at least one resistive layer between the support layer of the radiating element(s) and the substrate spacer, while the resistive layer comprises at least two sets of nested resistive patterns. This antenna is such that the sets of resistive patterns have resistance values gradually varying between a central antenna point and an outer edge of the antenna, in order to achieve a resistance gradient.Type: ApplicationFiled: June 9, 2017Publication date: February 6, 2020Applicant: ThalesInventors: Stéphane MALLEGOL, Michel JOUSSET, Pierre BELEC
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Patent number: 9755317Abstract: In the field of circular-polarized planar wire antennas for very wide band telecommunications systems, and an antenna reflector for such an antenna, an antenna device comprises an antenna reflector and an antenna, and a method for implementing the antenna reflector. The antenna reflector comprises, on the one hand, a first reflection region exhibiting electromagnetic properties of an electrical conductor in a first sub-band of frequencies and, on the other hand, a second reflection region exhibiting electromagnetic properties akin to a magnetic conductor in a second sub-band of frequencies. Each reflection region is designed to face a region of the antenna able to emit electromagnetic radiation in the corresponding sub-band of frequencies in order to reflect the electric field of the backward radiation in phase with the electric field of the forward radiation.Type: GrantFiled: September 23, 2011Date of Patent: September 5, 2017Assignee: ThalesInventors: Michael Grelier, Michel Jousset, Stéphane Mallegol, Xavier Begaud
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Publication number: 20150009084Abstract: An electromagnetic band gap device is disclosed that includes a dielectric support of which one face is metallized and of which a second face includes a plurality of non-adjoining conducting elements. Several conducting elements are linked together pairwise by a resistive element in the electromagnetic band gap device. At least two of the conducting elements are electrically insulated from one another and at least two resistive elements exhibit a different resistance value.Type: ApplicationFiled: February 19, 2013Publication date: January 8, 2015Inventors: Yonnec'h Coupa, Michel Jousset, Stephane Mallegol
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Publication number: 20130249762Abstract: In the field of circular-polarized planar wire antennas for very wide band telecommunications systems, and an antenna reflector for such an antenna, an antenna device comprises an antenna reflector and an antenna, and a method for implementing the antenna reflector. The antenna reflector comprises, on the one hand, a first reflection region exhibiting electromagnetic properties of an electrical conductor in a first sub-band of frequencies and, on the other hand, a second reflection region exhibiting electromagnetic properties akin to a magnetic conductor in a second sub-band of frequencies. Each reflection region is designed to face a region of the antenna able to emit electromagnetic radiation in the corresponding sub-band of frequencies in order to reflect the electric field of the backward radiation in phase with the electric field of the forward radiation.Type: ApplicationFiled: September 23, 2011Publication date: September 26, 2013Applicant: THALESInventors: Michaël Grelier, Michel Jousset, Stéphane Mallegol, Xavier Begaud
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Patent number: 7538634Abstract: The present invention concerns a frequency diplexer with an input port and a first and a second output ports, comprising two directional couplers (14 and 15), an unique filter (16) that entails either a first or a second frequency response, and, a first and a second T splitters (19, 40).Type: GrantFiled: October 13, 2006Date of Patent: May 26, 2009Assignee: Mitsubishi Electric CorporationInventor: Stephane Mallegol
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Publication number: 20080197939Abstract: The present invention relates to a microwave filter bank intended to be used either as or a multiplexer or de-multiplexer in a UWB-type system, said microwave filter bank including a plurality of filters and an interconnection network both connecting a first port (Pifb) of said microwave filter bank to other ports of said microwave filter bank.Type: ApplicationFiled: January 16, 2008Publication date: August 21, 2008Applicant: MITSUBISHI ELECTRIC CORPORATIONInventor: Stephane MALLEGOL
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Publication number: 20070096846Abstract: The present invention concerns a frequency diplexer with an input port and a first and a second output ports, comprising two directional couplers (14 and 15), an unique filter (16) that entails either a first or a second frequency response, and, a first and a second T splitters (19, 40).Type: ApplicationFiled: October 13, 2006Publication date: May 3, 2007Applicant: MITSUBISHI ELECTRIC CORPORATIONInventor: Stephane Mallegol
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Publication number: 20070033243Abstract: The present invention concerns microwave filter banks of the type including at least one interconnection network and filters, each of said at least interconnection network comprising an input line and at least two output lines connected to said input line, a filter being connected to each output line of said interconnection network, the filters connected to said or to a given interconnection network having different cutoff frequencies and non-overlapping bandwidth. They are characterized in that the output lines of the or at least one interconnection network exhibit different characteristic impedances.Type: ApplicationFiled: July 11, 2006Publication date: February 8, 2007Applicant: MITSUBISHI DENKI KABUSHIKI KAISHAInventor: Stephane Mallegol