Patents by Inventor Andrew McCandless
Andrew McCandless 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: 9831901Abstract: An interference cancellation system (ICS) may be used with a communication system to prevent or minimize interference from one or more sources. The ICS may receive radio frequency (RF) signals comprised of one or more signals of interest (SOI) and multiple interfering signals. An interference estimation processor (IEP) may be used to estimate the one or more interfering signals. The interfering signals may be estimated using spatial and/or time diversity, which may be combined with statistical methods. The estimated interfering signals may be sent to the ICS, which may use the estimated interference signal to cancel the interference and output the SOI.Type: GrantFiled: April 26, 2016Date of Patent: November 28, 2017Assignee: L3 TECHNOLOGIES, INC.Inventors: Elias Bonaventure Kpodzo, Robert Holland, Paul Dourbal, Yanhua Deng, Paul Prucnal, Andrew McCandless
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Patent number: 9748987Abstract: Systems and methods for cancelling interference from a received signal in order to properly detect a signal of interest are disclosed. A combined signal of interest plus interference signal may be received. A copy or sample of the interference signal may be determined. The interference signal and the combined signal of interest plus interference signal may be converted to the optical domain. The interference signal may be optically phase shifted by ?180 degrees, which may result in an optically inverted interference signal. The optically inverted interference signal may be variably optically attenuated and/or variably optically time delayed, for example based on a detected output power of an optical subsystem of the interference cancellation system. As a result, interference cancellation of the interference signal from the combined signal of interest plus interference signal may be achieved, resulting in 50 dB or more of cancellation of the interference signal.Type: GrantFiled: July 22, 2016Date of Patent: August 29, 2017Assignee: L3 TECHNOLOGIES, INC.Inventors: Elias Bonaventure Kpodzo, Robert Holland, Yanhua Deng, Paul Prucnal, Andrew McCandless, Paul Dourbal
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Patent number: 9712233Abstract: A method and apparatus for cancelling interference of an interfering transmit signal. The method includes the steps of (a) transmitting an RF transmit signal from a transceiver, (b) optically modulating the RF transmit signal, (c) optically modulating a RF receive signal; (d) demodulating an optical signal back to an RF signal using an optical-electrical balanced receiver and directing to the transceiver, and (e) demodulating the optical transmit signal back to RF transmit signal.Type: GrantFiled: September 11, 2015Date of Patent: July 18, 2017Assignee: Bascom Hunter Technologies, Inc.Inventors: Yanhua Deng, Andrew McCandless
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Patent number: 9571205Abstract: Disclosed is a system and method of combining optical interference cancellation with other methods of interference cancellation, including electronic cancellation, digital filtering, and beam steering algorithms, to remove co-located interference, remote interference of an unknown origin, and multipath interference components created by reflections of signals both known and unknown.Type: GrantFiled: March 24, 2014Date of Patent: February 14, 2017Assignees: THE TRUSTEES OF PRINCETON UNIVERSITY, BASCOM HUNTER TECHNOLOGIESInventors: John Suarez, Paul R. Prucnal, Yanhua Deng, Andrew McCandless
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Publication number: 20170026126Abstract: Systems and methods for cancelling interference from a received signal in order to properly detect a signal of interest are disclosed. A combined signal of interest plus interference signal may be received. A copy or sample of the interference signal may be determined. The interference signal and the combined signal of interest plus interference signal may be converted to the optical domain. The interference signal may be optically phase shifted by ?180 degrees, which may result in an optically inverted interference signal. The optically inverted interference signal may be variably optically attenuated and/or variably optically time delayed, for example based on a detected output power of an optical subsystem of the interference cancellation system. As a result, interference cancellation of the interference signal from the combined signal of interest plus interference signal may be achieved, resulting in 50 dB or more of cancellation of the interference signal.Type: ApplicationFiled: July 22, 2016Publication date: January 26, 2017Applicant: L-3 Communications CorporationInventors: Elias Bonaventure Kpodzo, Robert Holland, Yanhua Deng, Paul Prucnal, Andrew McCandless, Paul Dourbal
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Patent number: 9444502Abstract: Systems and methods for cancelling interference from a received signal in order to properly detect a signal of interest are disclosed. A combined signal of interest plus interference signal may be received. A copy or sample of the interference signal may be determined. The interference signal and the combined signal of interest plus interference signal may be converted to the optical domain. The interference signal may be optically phase shifted by ?180 degrees, which may result in an optically inverted interference signal. The optically inverted interference signal may be variably optically attenuated and/or variably optically time delayed, for example based on a detected output power of an optical subsystem of the interference cancellation system. As a result, interference cancellation of the interference signal from the combined signal of interest plus interference signal may be achieved, resulting in 50 dB or more of cancellation of the interference signal.Type: GrantFiled: May 21, 2013Date of Patent: September 13, 2016Assignee: L-3 Communications CorporationInventors: Elias Bonaventure Kpodzo, Robert Holland, Yanhua Deng, Paul Prucnal, Andrew McCandless, Paul Dourbal
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Publication number: 20160241354Abstract: An interference cancellation system (ICS) may be used with a communication system to prevent or minimize interference from one or more sources. The ICS may receive radio frequency (RF) signals comprised of one or more signals of interest (SOI) and multiple interfering signals. An interference estimation processor (IEP) may be used to estimate the one or-more interfering signals. The interfering signals may be estimated using spatial and/or time diversity, which may be combined with statistical methods. The estimated interfering signals may be sent to the ICS, which may use the estimated interference signal to cancel the interference and output the SOI.Type: ApplicationFiled: April 26, 2016Publication date: August 18, 2016Inventors: Elias Bonaventure Kpodzo, Robert Holland, Paul Dourbal, Yanhua Deng, Paul Prucnal, Andrew McCandless
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Patent number: 9344125Abstract: An interference cancellation system (ICS) may be used with a communication system to prevent or minimize interference from one or more sources. The ICS may receive radio frequency (RF) signals comprised of one or more signals of interest (SOI) and multiple interfering signals. An interference estimation processor (IEP) may be used to estimate the one or more interfering signals. The interfering signals may be estimated using spatial and/or time diversity, which may be combined with statistical methods. The estimated interfering signals may be sent to the ICS, which may use the estimated interference signal to cancel the interference and output the SOI.Type: GrantFiled: May 21, 2013Date of Patent: May 17, 2016Assignee: L-3 Communications CorporationInventors: Elias Bonaventure Kpodzo, Robert Holland, Paul Dourbal, Yanhua Deng, Paul Prucnal, Andrew McCandless
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Publication number: 20130308732Abstract: An interference cancellation system (ICS) may be used with a communication system to prevent or minimize interference from one or more sources. The ICS may receive radio frequency (RF) signals comprised of one or more signals of interest (SOI) and multiple interfering signals. An interference estimation processor (IEP) may be used to estimate the one or more interfering signals. The interfering signals may be estimated using spatial and/or time diversity, which may be combined with statistical methods. The estimated interfering signals may be sent to the ICS, which may use the estimated interference signal to cancel the interference and output the SOI.Type: ApplicationFiled: May 21, 2013Publication date: November 21, 2013Inventors: Elias Bonaventure Kpodzo, Robert Holland, Paul Dourbal, Yanhua Deng, Paul Prucnal, Andrew McCandless
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Publication number: 20130309975Abstract: Systems and methods for cancelling interference from a received signal in order to properly detect a signal of interest are disclosed. A combined signal of interest plus interference signal may be received. A copy or sample of the interference signal may be determined. The interference signal and the combined signal of interest plus interference signal may be converted to the optical domain. The interference signal may be optically phase shifted by ?180 degrees, which may result in an optically inverted interference signal. The optically inverted interference signal may be variably optically attenuated and/or variably optically time delayed, for example based on a detected output power of an optical subsystem of the interference cancellation system. As a result, interference cancellation of the interference signal from the combined signal of interest plus interference signal may be achieved, resulting in 50 dB or more of cancellation of the interference signal.Type: ApplicationFiled: May 21, 2013Publication date: November 21, 2013Applicant: L-3 Communications CorporationInventors: Elias Bonaventure Kpodzo, Robert Holland, Yanhua Deng, Paul Prucnal, Andrew McCandless, Paul Dourbal
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Publication number: 20050183851Abstract: An apparatus providing high efficiency heat exchange between two fluids is disclosed. The apparatus most commonly comprises a flat panel with microchannels directing the flow of the two fluids, specifically: with a small hydraulic diameter in order to increase the heat transfer effect; while, at the same time, the flow length and cross-section of the microchannels are controlled to reduce the pressure losses normally associated with such small hydraulic diameters.Type: ApplicationFiled: January 24, 2005Publication date: August 25, 2005Inventors: Kevin Kelly, Andrew McCandless