Patents by Inventor Jay A. Kralovec

Jay A. Kralovec 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).

  • Patent number: 8861971
    Abstract: A phased antenna array includes an array of antenna elements, and an electro-optic (EO) readout circuit coupled to the array of antenna elements. The EO readout circuit includes an optical source having a first wavelength division multiplexer (WDM) configured to generate an optical carrier signal including beam carrier wavelengths, a first EO modulator configured to modulate a signal from an antenna element based upon the optical carrier signal, a second WDM coupled downstream from the first EO modulator, and optical-to-electrical converters coupled downstream from the second WDM. The second WDM is configured to multiplex each modulated beam carrier wavelength to a respective optical-to-electrical converter.
    Type: Grant
    Filed: January 5, 2012
    Date of Patent: October 14, 2014
    Assignee: Harris Corporation
    Inventors: Charles Middleton, Alan Mast, Jay Kralovec, Richard DeSalvo, Gus W. Deibner
  • Publication number: 20130202306
    Abstract: A phased antenna array includes a plurality of electro-optic (EO) circuits. Each EO circuit has a digital-to-analog converter (DAC) configured to receive a baseband signal, and an optical source comprising an optical source electro-optical (EO) modulator and configured to generate an optical signal. Each EO circuit also has an EO modulator coupled downstream of the DAC and to the optical source and configured to modulate an optical carrier signal based upon the baseband signal and the optical signal, and an optical combiner coupled downstream of the EO modulator and coupled to the optical source. In addition, there are a plurality of antenna circuits spaced apart from the plurality of EO circuits, each antenna circuit comprising at least one photodiode and an antenna element coupled thereto. Moreover, a plurality of optical fibers couple the plurality of EU circuits to the plurality of antenna circuits.
    Type: Application
    Filed: February 8, 2012
    Publication date: August 8, 2013
    Applicant: Harris Corporation, Corporation of the State of Delaware
    Inventors: Charles MIDDLETON, Alan MAST, Jay KRALOVEC, Richard DESALVO, Gus W. DEIBNER, Jeff PHILO
  • Publication number: 20130202307
    Abstract: A phased antenna array includes a plurality of electro-optic (EO) circuits. Each EO circuit has a digital-to-analog converter (DAC) configured to receive a baseband signal, and an optical source configured to generate an optical signal. Each EO circuit also has an EO modulator coupled downstream of the DAC and to the optical source and configured to modulate an optical carrier signal based upon the baseband signal and the optical signal, and an optical combiner coupled downstream of the EO modulator and coupled to the optical source. In addition, there are a plurality of antenna circuits spaced apart from the plurality of EO circuits, each antenna circuit comprising at least one photodiode and an antenna element coupled thereto. Moreover, a plurality of optical fibers couple the plurality of EO circuits to the plurality of antenna circuits.
    Type: Application
    Filed: February 8, 2012
    Publication date: August 8, 2013
    Applicant: Harris Corporation, Corporation of the State of Delaware
    Inventors: Charles Middleton, Alan Mast, Jay Kralovec, Richard Desalvo, Gus W. Deibner, Jeff Philo
  • Publication number: 20130202308
    Abstract: A phased antenna array includes a plurality of electro-optic (EO) circuits. Each EO circuit has a digital-to-analog converter (DAC) configured to receive a baseband signal, and an optical source comprising an opto-electronic oscillator configured to generate an optical signal. Each EO circuit also has an EO modulator coupled downstream of the DAC and to the optical source and configured to modulate an optical carrier signal based upon the baseband signal and the optical signal, and an optical combiner coupled downstream of the EO modulator and coupled to the optical source. In addition, there are a plurality of antenna circuits spaced apart from the plurality of EO circuits, each antenna circuit comprising at least one photodiode and an antenna element coupled thereto. Moreover, a plurality of optical fibers couple the plurality of EO circuits to the plurality of antenna circuits.
    Type: Application
    Filed: February 8, 2012
    Publication date: August 8, 2013
    Applicant: Harris Corporation, Corporation of the State of Delaware
    Inventors: Charles Middleton, Alan Mast, Jay Kralovec, Richard Desalvo, Gus W. Deibner, Jeff Philo
  • Publication number: 20130176165
    Abstract: A phased antenna array includes an array of antenna elements, and an electro-optic (EO) readout circuit coupled to the array of antenna elements. The EO readout circuit includes an optical source having a first wavelength division multiplexer (WDM) configured to generate an optical carrier signal including beam carrier wavelengths, a first EO modulator configured to modulate a signal from an antenna element based upon the optical carrier signal, a second WDM coupled downstream from the first EO modulator, and optical-to-electrical converters coupled downstream from the second WDM. The second WDM is configured to multiplex each modulated beam carrier wavelength to a respective optical-to-electrical converter.
    Type: Application
    Filed: January 5, 2012
    Publication date: July 11, 2013
    Applicant: Harris Corporation
    Inventors: Charles Middleton, Alan Mast, Jay Kralovec, Richard DeSalvo, Gus W. Deibner
  • Publication number: 20130177319
    Abstract: A phased antenna array includes an array of antenna elements, and an electro-optic (EO) readout circuit coupled to the array of antenna elements. The EO readout circuit includes a mode locked laser (MLL) configured to generate an optical carrier signal comprising beam carrier wavelengths, an EO modulator configured to modulate a signal from an antenna element based upon the optical carrier signal, and an optical-to-electrical converter coupled downstream from the EO modulator and the MLL.
    Type: Application
    Filed: January 5, 2012
    Publication date: July 11, 2013
    Applicant: Harris Corporation
    Inventors: Charles Middleton, Alan Mast, Jay Kralovec, Richard DeSalvo, Gus W. Deibner, Jeff Philo
  • Publication number: 20130177315
    Abstract: A phased antenna array includes an array of antenna elements, and an electro-optic (EO) readout circuit coupled to the array of antenna elements. The EU readout circuit includes an optical source including a mode locked laser (MLL) configured to generate an optical carrier signal having beam carrier wavelengths, an EO modulator configured to modulate a signal from an antenna element based upon the optical carrier signal, a first WDM coupled downstream from the EO modulator, and optical-to-electrical converters coupled downstream from the first WDM. The first WDM is configured to multiplex each modulated beam carrier wavelength to a respective optical-to-electrical converter.
    Type: Application
    Filed: January 5, 2012
    Publication date: July 11, 2013
    Applicant: Harris Corporation
    Inventors: Charles Middleton, Alan Mast, Jay Kralovec, Richard DeSalvo, Gus W. Deibner
  • Publication number: 20130176164
    Abstract: A phased antenna array includes an array of antenna elements, and an electro-optic (EO) readout circuit coupled to the array of antenna elements. The EO readout circuit includes an optical source configured to generate an optical carrier signal, a first EO modulator configured to modulate a signal from an antenna element based upon the optical carrier signal, and an optical-to-electrical converter coupled downstream from the first EO modulator.
    Type: Application
    Filed: January 5, 2012
    Publication date: July 11, 2013
    Applicant: Harris Corporation
    Inventors: Charles Middleton, Alan Mast, Jay Kralovec, Richard DeSalvo, Gus W. Deibner, Jeff Philo
  • Patent number: 7598918
    Abstract: The tubular slot-mode antenna includes an array of slot antenna units carried by a tubular substrate, e.g. a cylindrical substrate, and each slot antenna unit having a pair of patch antenna elements arranged in laterally spaced apart relation about at least one central feed position. Adjacent patch antenna elements of adjacent slot-mode antenna units have respective spaced apart edge portions with predetermined shapes and relative positioning to provide increased capacitive coupling therebetween. The array of slot-mode antenna units may define a plurality of ring-shaped slots coaxial with an axis of the tubular substrate, and a feed arrangement may be coupled thereto to operate the array of slot-mode antenna units in an endfire mode.
    Type: Grant
    Filed: January 21, 2008
    Date of Patent: October 6, 2009
    Assignee: Harris Corporation
    Inventors: Timothy E. Durham, Griffin K. Gothard, Anthony Mark Jones, Jay Kralovec, Stephen R. Landers, Sean Ortiz, Chris Snyder, Ralph Trosa
  • Publication number: 20080150820
    Abstract: The tubular slot-mode antenna includes an array of slot antenna units carried by a tubular substrate, e.g. a cylindrical substrate, and each slot antenna unit having a pair of patch antenna elements arranged in laterally spaced apart relation about at least one central feed position. Adjacent patch antenna elements of adjacent slot-mode antenna units have respective spaced apart edge portions with predetermined shapes and relative positioning to provide increased capacitive coupling therebetween. The array of slot-mode antenna units may define a plurality of ring-shaped slots coaxial with an axis of the tubular substrate, and a feed arrangement may be coupled thereto to operate the array of slot-mode antenna units in an endfire mode.
    Type: Application
    Filed: January 21, 2008
    Publication date: June 26, 2008
    Applicant: Harris Corporation
    Inventors: Timothy E. Durham, Griffin K. Gothard, Anthony Mark Jones, Jay Kralovec, Stephen R. Landers, Sean Ortiz, Chris Snyder, Ralph Trosa
  • Publication number: 20080094298
    Abstract: A low-profile antenna system includes a main reflector (102) formed as a shaped main reflector surface that is approximately, but not precisely, parabolic. The main reflector (102) has a main reflector edge configuration (103) that is asymmetric. A feed system (104) for the main reflector includes a subreflector (106) formed as a shaped subreflector surface that is approximately, but not precisely, elliptical. The subreflector has a subreflector edge configuration (107) that is also asymmetric. An RF feed horn (108) associated with the feed system 104 has an aperture profile which also has an asymmetric shape.
    Type: Application
    Filed: October 23, 2006
    Publication date: April 24, 2008
    Applicant: HARRIS CORPORATION
    Inventors: Jay Kralovec, Griffin Gothard, Robert Meehan, Robert Howley, Kurt Zimmerman
  • Patent number: 7358921
    Abstract: A dual polarization antenna includes a substantially pyramidal configured substrate having opposing walls. An antenna element is carried at each wall such that opposing pairs of antenna elements define respective antenna dipoles and provide dual polarization.
    Type: Grant
    Filed: December 1, 2005
    Date of Patent: April 15, 2008
    Assignee: Harris Corporation
    Inventors: Chris Snyder, Griffin K. Gothard, Jay Kralovec
  • Patent number: 7253779
    Abstract: An antenna system comprising a plurality of antennas designed and oriented to provide one or more of radiation pattern, signal polarization and spatial diversity. The various diversity operational characteristics are achieved by using similar antennas physically oriented to provide the diversity attributes or by using dissimilar antennas, that is, antennas having different radiation pattern and/or signal polarization characteristics.
    Type: Grant
    Filed: December 6, 2002
    Date of Patent: August 7, 2007
    Assignee: SkyCross, Inc.
    Inventors: Kerry L. Greer, Frank M. Caimi, Jason M. Hendler, Jay A. Kralovec
  • Publication number: 20070126651
    Abstract: A dual polarization antenna includes a substantially pyramidal configured substrate having opposing walls. An antenna element is carried at each wall such that opposing pairs of antenna elements define respective antenna dipoles and provide dual polarization.
    Type: Application
    Filed: December 1, 2005
    Publication date: June 7, 2007
    Applicant: Harris Corporation
    Inventors: Chris Snyder, Griffin Gothard, Jay Kralovec
  • Patent number: 7187340
    Abstract: Compact multi-band antenna system (500) includes a main reflector (502) having a shaped surface of revolution about a boresight axis of the antenna operable at a plurality of frequency bands spectrally offset from each other. A multi band feed system (300) is provided for the main reflector that includes a subreflector (304) formed as a shaped surface of revolution about the boresight axis of the antenna, and a horn antenna (302). The horn antenna has one or more ridges (312) disposed in a throat region (314) of the horn antenna extending in a direction aligned with the boresight axis (3100 of the antenna. The horn antenna is coupled to the shaped surface of revolution defining the subreflector.
    Type: Grant
    Filed: October 15, 2004
    Date of Patent: March 6, 2007
    Assignee: Harris Corporation
    Inventors: Jay Kralovec, Griffin Gothard, Sean Ortiz
  • Publication number: 20060082513
    Abstract: Compact multi-band antenna system (500) includes a main reflector (502) having a shaped surface of revolution about a boresight axis of the antenna operable at a plurality of frequency bands spectrally offset from each other. A multi band feed system (300) is provided for the main reflector that includes a subreflector (304) formed as a shaped surface of revolution about the boresight axis of the antenna, and a horn antenna (302). The horn antenna has one or more ridges (312) disposed in a throat region (314) of the horn antenna extending in a direction aligned with the boresight axis (3100 of the antenna. The horn antenna is coupled to the shaped surface of revolution defining the subreflector.
    Type: Application
    Filed: October 15, 2004
    Publication date: April 20, 2006
    Applicant: HARRIS CORPORATION
    Inventors: Jay Kralovec, Griffin Gothard, Sean Ortiz
  • Patent number: 6982679
    Abstract: An antenna feed system includes a plurality of RF horn antennas (201, 202) for operating on a plurality of RF frequency bands. A first one of the feed horns (202) can have a boresight axis and is configured for operating at a first one of the frequency bands. A second one of the feed horns (201) is positioned coaxially within the first one of the feed horns (202) and is configured for operating at least at a second one of the frequency bands. Further, the first one of the feed horns (202) is a corrugated horn that has a plurality of corrugations (204) formed on an interior surface defining a profile. The profile extends substantially from a throat (205) of the first feed horn and along a tapered portion of the first feed horn. The profile substantially minimizes an interaction of the corrugations with the second feed horn.
    Type: Grant
    Filed: October 27, 2003
    Date of Patent: January 3, 2006
    Assignee: Harris Corporation
    Inventors: Jay A. Kralovec, Griffin K. Gothard, Timothy E. Durham
  • Patent number: 6950066
    Abstract: An monolithic surface mountable antenna. The antenna comprises a ground plane, two dielectric layers separated by a conductive intermediate layer and a plurality of conductive regions on a top surface. Ground vias pass through the dielectric layers and connect one or more of the conductive regions to the ground plane. At least one signal via is connected to one of the plurality of conductive regions.
    Type: Grant
    Filed: August 21, 2003
    Date of Patent: September 27, 2005
    Assignee: SkyCross, Inc.
    Inventors: Jason M. Hendler, Jay A. Kralovec, Mark T. Montgomery, Frank M. Caimi
  • Patent number: 6937201
    Abstract: A multi-band ring focus antenna system includes a main reflector (408) that is operable at a plurality spectrally offset frequency bands. A first feed (301, 403) includes a first feed horn (301) and a first sub-reflector (403), which are positioned spaced apart from each other at respective locations along a boresight axis of the main reflector. The locations are selected so that the first feed horn and the first sub-reflector share a commonly located first phase center (401). A second feed (302, 404) designed for operation on a second RF frequency band includes a second feed horn (302) and a second sub-reflector (404), each positioned at a location along the boresight axis of the main reflector so that they share a commonly located second phase center.
    Type: Grant
    Filed: November 7, 2003
    Date of Patent: August 30, 2005
    Assignee: Harris Corporation
    Inventors: Griffin K. Gothard, Jay A. Kralovec, Sean C. Ortiz, Timothy E. Durham
  • Patent number: 6911953
    Abstract: A compact multi-band ring-focus antenna system. The antenna system includes a first and a second main reflector 304, 306, each having a shaped surface of revolution about a common boresight axis (322) of the antenna. A first backfire type RF feed system (302, 312) is provided for feeding the first main reflector (304) on a first frequency band. A second RF feed (301) coaxial with the first RF feed (300) is provided for feeding the second main reflector (306) on a second frequency band spectrally offset from the first frequency band. Further a portion of the second RF feed passes through a first sub-reflectors (302) of the backfire feed. The second RF feed is terminated a distance from the first sub-reflector to illuminate a second sub-reflector (303).
    Type: Grant
    Filed: November 7, 2003
    Date of Patent: June 28, 2005
    Assignee: Harris Corporation
    Inventors: Griffin K. Gothard, Timothy E. Durham, Jay A. Kralovec, Sean C. Ortiz