Patents by Inventor Stephane Laurent
Stephane Laurent 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: 9685983Abstract: A system comprises a microwave backhaul outdoor unit having a first resonant circuit, phase error determination circuitry, and phase error compensation circuitry. The first resonant circuit is operable to generate a first signal characterized by a first amount of phase noise and a first amount of temperature stability. The phase error determination circuitry is operable to generate a phase error signal indicative of phase error between the first signal and a second signal, wherein the second signal is characterized by a second amount of phase noise that is greater than the first amount of phase noise, and the second signal is characterized by a second amount of temperature instability that is less than the first amount of temperature instability. The phase error compensation circuitry is operable to adjust the phase of a data signal based on the phase error signal, the adjustment resulting in a phase compensated signal.Type: GrantFiled: December 21, 2015Date of Patent: June 20, 2017Assignee: Maxlinear, Inc.Inventors: Subramanian Anantharaman Chandrasekarapuram, Anand Anandakumar, Stephane Laurent-Michel, Sheng Ye, Raja Pullela, Glenn Chang, Vamsi Paidi
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Patent number: 9634701Abstract: A system comprises a modulator circuit, a test signal generator circuit, and a control circuit. The modulator circuit is operable to generate a data-carrying signal based on a reference signal. The test signal generator circuit is operable to generate a test signal based on the reference signal. The control circuit is operable to determine current status of a microwave backhaul link. The control circuit is operable to configure a nominal frequency at which the test signal generator circuit generates the test signal based on the determined status of the microwave backhaul link. The control circuit is operable to determine an amount of whitespace to have on either side of the test signal based on the current status of the microwave backhaul link. The control circuit is operable to configure the modulator circuit such that the data-carrying signal has the determined amount of whitespace surrounding the nominal frequency of the test signal.Type: GrantFiled: June 3, 2016Date of Patent: April 25, 2017Assignee: Maxlinear, Inc.Inventors: Stephane Laurent-Michel, Curtis Ling
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Patent number: 9599752Abstract: The invention relates to a substrate (10), especially a transparent glass substrate, equipped with a thin-film multilayer comprising, in alternation, ānā metallic functional films (40, 80, 120), in particular functional films based on silver or a metal alloy containing silver, and ā(n+1)ā antireflection coatings (20, 60, 100, 140), where n is an integer?3, each antireflection coating comprising at least one antireflection film, so that each functional film (40, 80, 120) is located between two antireflection coatings (20, 60, 100, 140), characterized in that said multilayer comprises at least two high-refractive-index antireflection films (25, 145), each having a refractive index?2.Type: GrantFiled: January 6, 2012Date of Patent: March 21, 2017Assignee: SAINT-GOBAIN GLASS FRANCEInventors: Stephane Laurent, Robert Drese, Ruth Verena Skantze
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Publication number: 20170041032Abstract: A first microwave backhaul assembly comprises a first antenna, a front-end circuit, an inter-backhaul-assembly interface circuit, and an interference cancellation circuit. The first antenna is operable to receive a first microwave signal. The front-end circuit is operable to convert the first microwave signal to a lower-frequency digital signal, wherein the lower-frequency digital signal has energy of a second microwave signal and energy of a third microwave signal. The inter-backhaul-assembly interface circuit is operable to receive information from a second microwave backhaul assembly. The interference cancellation circuit is operable to use the information received via the inter-backhaul-assembly interface circuit during processing of the lower-frequency digital signal to remove, from the first microwave signal, the energy of the third microwave signal. The information received via the inter-backhaul-assembly interface may comprise a signal having energy of the second microwave signal.Type: ApplicationFiled: October 19, 2016Publication date: February 9, 2017Inventors: Stephane Laurent-Michel, Curtis Ling
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Publication number: 20170006610Abstract: Aspects of methods and systems for PAPR reduction in a microwave backhaul outdoor unit are provided.Type: ApplicationFiled: July 1, 2016Publication date: January 5, 2017Inventors: Stephane Laurent-Michel, Raghuraman Mariappan
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Publication number: 20160365883Abstract: Systems and methods are provided for receiver nonlinearity estimation and cancellation. During processing of received radio frequency (RF) signals, it may be determined when one or more other signals, different from the received RF signals, cause nonlinearity affecting processing of the RF signals, and one or more cancellation adjustments may be applied during processing of the RF signals, for mitigating effects of the nonlinearity. Determining the one or more cancellation adjustments may be based on narrowband (NB) estimation of the effects of the nonlinearity, and the one or more cancellation adjustments may be configured as wideband (WB) corrections. The NB estimation may be applied based on channelization of the received RF signals. The NB estimation may comprise generating reference nonlinearity information relating to the one or more other signals, and generating, based on the reference nonlinearity information, control data for configuring the one or more cancellation adjustments.Type: ApplicationFiled: June 13, 2016Publication date: December 15, 2016Inventors: Wen-Chi Tu, Stephane Laurent-Michel
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Patent number: 9503137Abstract: A first microwave backhaul assembly comprises a first antenna, a front-end circuit, an inter-backhaul-assembly interface circuit, and an interference cancellation circuit. The first antenna is operable to receive a first microwave signal. The front-end circuit is operable to convert the first microwave signal to a lower-frequency digital signal, wherein the lower-frequency digital signal has energy of a second microwave signal and energy of a third microwave signal. The inter-backhaul-assembly interface circuit is operable to receive information from a second microwave backhaul assembly. The interference cancellation circuit is operable to use the information received via the inter-backhaul-assembly interface circuit during processing of the lower-frequency digital signal to remove, from the first microwave signal, the energy of the third microwave signal. The information received via the inter-backhaul-assembly interface may comprise a signal having energy of the second microwave signal.Type: GrantFiled: February 23, 2016Date of Patent: November 22, 2016Assignee: MAXLINEAR, INC.Inventors: Stephane Laurent-Michel, Curtis Ling
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Publication number: 20160285488Abstract: A system comprises a modulator circuit, a test signal generator circuit, and a control circuit. The modulator circuit is operable to generate a data-carrying signal based on a reference signal. The test signal generator circuit is operable to generate a test signal based on the reference signal. The control circuit is operable to determine current status of a microwave backhaul link. The control circuit is operable to configure a nominal frequency at which the test signal generator circuit generates the test signal based on the determined status of the microwave backhaul link. The control circuit is operable to determine an amount of whitespace to have on either side of the test signal based on the current status of the microwave backhaul link. The control circuit is operable to configure the modulator circuit such that the data-carrying signal has the determined amount of whitespace surrounding the nominal frequency of the test signal.Type: ApplicationFiled: June 3, 2016Publication date: September 29, 2016Inventors: Stephane Laurent-Michel, Curtis Ling
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Patent number: 9391717Abstract: Canceling distortion in the receive path of a radio is achieved by down-converting an RF transmit signal to cancel leakage and intermodulation noise in a receive path baseband or intermediate frequency signal. Cancelation may be combined with digital pre-distortion of the transmit signal. Processing may be applied to optimize cancelation. Further cancelation can be achieved by re-modulating the demodulated and error-corrected receive signal, and predicting distortion caused by the transmit path. The cancelation system may be calibrated using a test signal.Type: GrantFiled: November 13, 2013Date of Patent: July 12, 2016Inventor: Stephane Laurent-Michel
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Publication number: 20160173153Abstract: A first microwave backhaul assembly comprises a first antenna, a front-end circuit, an inter-backhaul-assembly interface circuit, and an interference cancellation circuit. The first antenna is operable to receive a first microwave signal. The front-end circuit is operable to convert the first microwave signal to a lower-frequency digital signal, wherein the lower-frequency digital signal has energy of a second microwave signal and energy of a third microwave signal. The inter-backhaul-assembly interface circuit is operable to receive information from a second microwave backhaul assembly. The interference cancellation circuit is operable to use the information received via the inter-backhaul-assembly interface circuit during processing of the lower-frequency digital signal to remove, from the first microwave signal, the energy of the third microwave signal. The information received via the inter-backhaul-assembly interface may comprise a signal having energy of the second microwave signal.Type: ApplicationFiled: February 23, 2016Publication date: June 16, 2016Inventors: Stephane Laurent-Michel, Curtis Ling
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Patent number: 9362965Abstract: A transmitter comprises a local oscillator circuit operable to generate a reference signal, a modulator circuit operable to generate a data-carrying signal using the reference signal, and a test signal generator circuit operable to generate a test signal using the reference signal. The test signal has a first bandwidth, and a test signal insertion circuit is operable to combine the data-carrying signal and the test signal to generate a combined signal. An amount of bandwidth in the combined signal allocated to the test signal is greater than the first bandwidth such that a component of the combined signal corresponding to the test signal is bordered by whitespace. A receiver may then use the test signal to determine and correct for phase noise introduced in the transmitter.Type: GrantFiled: December 30, 2014Date of Patent: June 7, 2016Assignee: Maxlinear, Inc.Inventors: Stephane Laurent-Michel, Curtis Ling
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Publication number: 20160127119Abstract: A system comprises a microwave backhaul outdoor unit having a first resonant circuit, phase error determination circuitry, and phase error compensation circuitry. The first resonant circuit is operable to generate a first signal characterized by a first amount of phase noise and a first amount of temperature stability. The phase error determination circuitry is operable to generate a phase error signal indicative of phase error between the first signal and a second signal, wherein the second signal is characterized by a second amount of phase noise that is greater than the first amount of phase noise, and the second signal is characterized by a second amount of temperature instability that is less than the first amount of temperature instability. The phase error compensation circuitry is operable to adjust the phase of a data signal based on the phase error signal, the adjustment resulting in a phase compensated signal.Type: ApplicationFiled: December 21, 2015Publication date: May 5, 2016Inventors: Subramanian Anantharaman Chandrasekarapuram, Anand Anandakumar, Stephane Laurent-Michel, Sheng Ye, Raja Pullela, Glenn Chang, Vamsi Paidi
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Publication number: 20160128136Abstract: A system comprises a microwave backhaul outdoor unit having a first resonant circuit, phase error determination circuitry, and phase error compensation circuitry. The first resonant circuit is operable to generate a first signal characterized by a first amount of phase noise and a first amount of temperature stability. The phase error determination circuitry is operable to generate a phase error signal indicative of phase error between the first signal and a second signal, wherein the second signal is characterized by a second amount of phase noise that is greater than the first amount of phase noise, and the second signal is characterized by a second amount of temperature instability that is less than the first amount of temperature instability. The phase error compensation circuitry is operable to adjust the phase of a data signal based on the phase error signal, the adjustment resulting in a phase compensated signal.Type: ApplicationFiled: November 2, 2015Publication date: May 5, 2016Inventors: Anand Anandakumar, Sheng Ye, Stephane Laurent-Michel, Glenn Chang, Raja Pullela, Vamsi Paidi
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Patent number: 9270310Abstract: A first microwave backhaul assembly comprises a first antenna, a front-end circuit, an inter-backhaul-assembly interface circuit, and an interference cancellation circuit. The first antenna is operable to receive a first microwave signal. The front-end circuit is operable to convert the first microwave signal to a lower-frequency digital signal, wherein the lower-frequency digital signal has energy of a second microwave signal and energy of a third microwave signal. The inter-backhaul-assembly interface circuit is operable to receive information from a second microwave backhaul assembly. The interference cancellation circuit is operable to use the information received via the inter-backhaul-assembly interface circuit during processing of the lower-frequency digital signal to remove, from the first microwave signal, the energy of the third microwave signal. The information received via the inter-backhaul-assembly interface may comprise a signal having energy of the second microwave signal.Type: GrantFiled: December 30, 2014Date of Patent: February 23, 2016Assignee: MAXLINEAR, INC.Inventors: Stephane Laurent-Michel, Curtis Ling
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Publication number: 20160020859Abstract: A radio with a system for cancelation of noise, distortion, and interference products is calibrated using a test signal. The test signal is inserted in a radio transmit path, amplified, and down-converted. The test signal may be converted from the digital domain prior to amplification, and up-converted prior to amplification. The down-converted amplified test signal is compared with a signal in the receive path, to measure test signal distortion in the receive path. A distortion model is calibrated based on the test signal, and parameters of the distortion model may be stored.Type: ApplicationFiled: September 29, 2015Publication date: January 21, 2016Inventor: Stephane Laurent-Michel
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Patent number: 9212090Abstract: One subject of the invention is a material comprising a substrate coated on at least one portion of at least one of its faces with a stack comprising a photocatalytic layer, the geometrical thickness of which is between 2 and 30 nm, and at least one pair of respectively high and low refractive index layers positioned underneath said photocatalytic layer so that in the or each pair, the or each high refractive index layer is closest to the substrate, said material being such that the optical thickness, for a wavelength of 350 nm, of the or each high refractive index layer, except the photocatalytic layer, is between 170 and 300 nm and the optical thickness, for a wavelength of 350 nm, of the or each low refractive index layer is between 30 and 90 nm.Type: GrantFiled: July 13, 2010Date of Patent: December 15, 2015Assignee: SAINT-GOBAIN GLASS FRANCEInventors: Stephane Laurent, Anne Durandeau, Emmanuel Valentin
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Publication number: 20150252361Abstract: The present invention provides a method of preparing a nucleic acid library, which includes providing a one or more nucleic acid samples, and a one or more of samples of solid state capture material; contacting each nucleic acid sample with a sample of capture material to provide captured nucleic acid samples; and pooling the captured nucleic acid samples to provide the nucleic acid library. The method is particularly suitable for preparing nucleic acids for sequencing, especially next generation sequencing and related methods such as genotyping-by-sequencing.Type: ApplicationFiled: September 20, 2013Publication date: September 10, 2015Inventors: Matthew James Hayden, Stephane Laurent Kong Kaw Wa
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Publication number: 20150188585Abstract: A first microwave backhaul assembly comprises a first antenna, a front-end circuit, an inter-backhaul-assembly interface circuit, and an interference cancellation circuit. The first antenna is operable to receive a first microwave signal. The front-end circuit is operable to convert the first microwave signal to a lower-frequency digital signal, wherein the lower-frequency digital signal has energy of a second microwave signal and energy of a third microwave signal. The inter-backhaul-assembly interface circuit is operable to receive information from a second microwave backhaul assembly. The interference cancellation circuit is operable to use the information received via the inter-backhaul-assembly interface circuit during processing of the lower-frequency digital signal to remove, from the first microwave signal, the energy of the third microwave signal. The information received via the inter-backhaul-assembly interface may comprise a signal having energy of the second microwave signal.Type: ApplicationFiled: December 30, 2014Publication date: July 2, 2015Inventors: Stephane Laurent-Michel, Curtis Ling
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Patent number: D791063Type: GrantFiled: December 3, 2015Date of Patent: July 4, 2017Assignee: The Goodyear Tire & Rubber CompanyInventors: Audrey Marie Paule Simon, Stephane Jose Geelen, Guillaume Francois Marie Torres, Sebastien Willy Fontaine, Armand Rene Gabriel Leconte, Sylvain Fourme, Stephane Laurent Claude Bokken
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Patent number: D791064Type: GrantFiled: June 28, 2016Date of Patent: July 4, 2017Assignee: The Goodyear Tire & Rubber CompanyInventors: Stephane Laurent Claude Bokken, Audrey Marie Paule Simon, Pavel Kroupa, Alexandre Vaisse, Sylvain Fourme