Patents by Inventor Michael J. Sotelo
Michael J. Sotelo 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: 9906245Abstract: A communications system having two terminals, each including two antennas, the communications system using spatial multiplexing. One antenna of a first terminal transmits a tracking tone along with a data signal. Two antennas in a second terminal receive the tracking tone. The signals from the two antennas are processed by a feed circuit. The feed circuit includes a variable delay circuit and a combiner that forms, at a first difference output, a linear combination, of a signal from the first antenna and a signal from the second antenna, in which the tracking tone is canceled. The variable delay circuit is actively adjusted to maintain this cancellation.Type: GrantFiled: September 15, 2015Date of Patent: February 27, 2018Assignee: RAYTHEON COMPANYInventors: Kenneth W. Brown, Michael J. Sotelo, April R. Sanders
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Publication number: 20170077965Abstract: A communications system having two terminals, each including two antennas, the communications system using spatial multiplexing. One antenna of a first terminal transmits a tracking tone along with a data signal. Two antennas in a second terminal receive the tracking tone. The signals from the two antennas are processed by a feed circuit. The feed circuit includes a variable delay circuit and a combiner that forms, at a first difference output, a linear combination, of a signal from the first antenna and a signal from the second antenna, in which the tracking tone is canceled. The variable delay circuit is actively adjusted to maintain this cancellation.Type: ApplicationFiled: September 15, 2015Publication date: March 16, 2017Inventors: Kenneth W. Brown, Michael J. Sotelo, April R. Sanders
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Patent number: 9362609Abstract: A power amplifier uses a modular architecture in which each of the one or more modules spatially combines the power from multiple amplified channels. The individual modules are configured to operate in the EHF band and above at low loss. This entails reconfiguring the input and output splitters, the end-launched transitions between the amplifier chips and the input and output splitters and the packaging of the DC power and control board. The input splitter uses a split-block technology. The output splitter maps each amplified channel into a two-dimensional aperture.Type: GrantFiled: March 31, 2014Date of Patent: June 7, 2016Assignee: Raytheon CompanyInventors: Kenneth W. Brown, Darin M. Gritters, Michael J. Sotelo, Andrew K. Brown, Travis B. Feenstra
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Publication number: 20150280650Abstract: A power amplifier uses a modular architecture in which each of the one or more modules spatially combines the power from multiple amplified channels. The individual modules are configured to operate in the EHF band and above at low loss. This entails reconfiguring the input and output splitters, the end-launched transitions between the amplifier chips and the input and output splitters and the packaging of the DC power and control board. The input splitter uses a split-block technology. The output splitter maps each amplified channel into a two-dimensional aperture.Type: ApplicationFiled: March 31, 2014Publication date: October 1, 2015Applicant: Raytheon CompanyInventors: Kenneth W. Brown, Darin M. Gritters, Michael J. Sotelo, Andrew K. Brown, Travis B. Feenstra
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Patent number: 9078371Abstract: An apparatus for conveying an electrical signal includes: a conductive pathway having a conductive material. The conductive material has a first edge and a second edge and is configured to convey the electrical signal. The apparatus also includes a resistive material in contact with at least a portion of the conductive pathway, covering an edge of the conductive pathway, and extending beyond the edge. The resistive material has a conductivity less than the conductivity of the conductive material.Type: GrantFiled: October 15, 2012Date of Patent: July 7, 2015Assignee: RAYTHEON COMPANYInventors: Andrew K. Brown, Thomas L. Obert, Michael J. Sotelo, Darin M. Gritters, Kenneth W. Brown
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Publication number: 20140102774Abstract: An apparatus for conveying an electrical signal includes: a conductive pathway having a conductive material. The conductive material has a first edge and a second edge and is configured to convey the electrical signal. The apparatus also includes a resistive material in contact with at least a portion of the conductive pathway, covering an edge of the conductive pathway, and extending beyond the edge. The resistive material has a conductivity less than the conductivity of the conductive material.Type: ApplicationFiled: October 15, 2012Publication date: April 17, 2014Applicant: RAYTHEON COMPANYInventors: Andrew K. Brown, Thomas L. Obert, Michael J. Sotelo, Darin M. Gritters, Kenneth W. Brown
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Publication number: 20130106649Abstract: Methods and apparatus for providing a first radar system having a transmitter and a receiver and a reflector to provide a synthetic aperture radar relationship. The signal return is processed to generate an image of targets in the area.Type: ApplicationFiled: October 11, 2012Publication date: May 2, 2013Inventors: Kenneth W. Brown, David R. Sar, Michael J. Sotelo, Elbert H. Ko, David D. Crouch
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Patent number: 8305280Abstract: A transition for coupling a microwave signal between a transmission line formed on a planar dielectric substrate and a hollow waveguide may include a half-notch antenna formed on a portion of the dielectric substrate extending into an open end of the hollow waveguide.Type: GrantFiled: November 4, 2009Date of Patent: November 6, 2012Assignee: Raytheon CompanyInventors: Kenneth W. Brown, Andrew K. Brown, Darin M. Gritters, Michael J. Sotelo, Thanh C. Ta
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Patent number: 8107894Abstract: A modular solid-state MMW power source based on a topology of the lens array amplifier provides both the flexibility to scale output power and effective thermal management. The modular power source includes a single submodule that uses one or more power dividers and one or more solid-state amplification stages to divide and amplify an RF input signal into R amplified RF signals. The submodule is mounted (suitably in the X-Y plane) on the surface of a heat sink, suitably coupled to a cold backplane, to remove heat. R 1:N low loss power dividers route the amplified RF signals to R*N radiating elements. Each of the 1:N power dividers suitably reside in the X-Z plane and are stacked in the Y direction to provide a planar output of the R*N radiating elements in the Y-Z plane. Placement of the amplifier chips on the single submodule decouples the number of amplifier chips, hence output power, from the number of radiating elements.Type: GrantFiled: February 16, 2009Date of Patent: January 31, 2012Assignee: Raytheon CompanyInventors: Reid F. Lowell, Kenneth W. Brown, Darin M. Gritters, Andrew K. Brown, Michael J. Sotelo, William E. Dolash, Travis B. Feenstra
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Publication number: 20110102284Abstract: A transition for coupling a microwave signal between a transmission line formed on a planar dielectric substrate and a hollow waveguide may include a half-notch antenna formed on a portion of the dielectric substrate extending into an open end of the hollow waveguide.Type: ApplicationFiled: November 4, 2009Publication date: May 5, 2011Inventors: Kenneth W. Brown, Andrew K. Brown, Darin M. Gritters, Michael J. Sotelo, Thanh C. Ta
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Patent number: 7920100Abstract: A foldable reflect array may include a plurality of geometrically-flat reflect antennas. Each of the reflect antennas may include a respective plurality of antenna elements to receive and retransmit an incident wavefront, and each of the plurality of reflect antennas may be foldably coupled to at least one other of the plurality of reflect antennas.Type: GrantFiled: July 8, 2008Date of Patent: April 5, 2011Assignee: Raytheon CompanyInventors: Kenneth W. Brown, William E. Dolash, Travis B. Feenstra, Michael J. Sotelo
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Publication number: 20100210225Abstract: A modular solid-state MMW power source based on a topology of the lens array amplifier provides both the flexibility to scale output power and effective thermal management. The modular power source includes a single submodule that uses one or more power dividers and one or more solid-state amplification stages to divide and amplify an RF input signal into R amplified RF signals. The submodule is mounted (suitably in the X-Y plane) on the surface of a heat sink, suitably coupled to a cold backplane, to remove heat. R 1:N low loss power dividers route the amplified RF signals to R*N radiating elements. Each of the 1:N power dividers suitably reside in the X-Z plane and are stacked in the Y direction to provide a planar output of the R*N radiating elements in the Y-Z plane. Placement of the amplifier chips on the single submodule decouples the number of amplifier chips, hence output power, from the number of radiating elements.Type: ApplicationFiled: February 16, 2009Publication date: August 19, 2010Inventors: Reid F. Lowell, Kenneth W. Brown, Darin M. Gritters, Andrew K. Brown, Michael J. Sotelo, William E. Dolash, Travis B. Feenstra
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Publication number: 20100149038Abstract: There is disclosed an apparatus to test an antenna. A transmitter generates a test signal radiated by the antenna under test. A near field scanner includes a field sampling probe to capture electromagnetic energy radiated by an antenna under test. An x-y positioning system including x and y positioning motors moves the field sampling probe over a measurement surface disposed proximate to the antenna under test. A quasi-optical beam transport system couples at least a portion of the captured electromagnetic energy from the field sampling probe to a scanner output port. A receiver is coupled to the scanner output port.Type: ApplicationFiled: December 17, 2008Publication date: June 17, 2010Inventors: Kenneth W. Brown, David D. Crouch, Michael J. Sotelo, Scott W. McClurg, Vince Giancola, William E. Dolash
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Publication number: 20090073073Abstract: A foldable reflect array may include a plurality of geometrically-flat reflect antennas. Each of the reflect antennas may include a respective plurality of antenna elements to receive and retransmit an incident wavefront, and each of the plurality of reflect antennas may be foldably coupled to at least one other of the plurality of reflect antennas.Type: ApplicationFiled: July 8, 2008Publication date: March 19, 2009Inventors: Kenneth W. Brown, William E. Dolash, Travis B. Feenstra, Michael J. Sotelo