Patents by Inventor Lev S. Sadovnik

Lev S. Sadovnik 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: 10090602
    Abstract: A steerable beam antenna includes a rotatable drum having a diffraction grating surface, and a waveguide feed including first and second conductive metal bases extending axially along the length of the drum, each of the bases having an inner surface spaced from and opposed to the inner surface of the other base, and a proximal surface spaced from the drum surface by a gap. First and second parallel conductive metal plates extend distally from the first and second bases, respectively, the first and second plates having respective inner surfaces separated by an inter-plate space. First and second dielectric strips are flush-mounted on the inner surfaces of the first and second conductive metal bases, respectively, the first dielectric strip extending longitudinally along the inner surface of the first base, and the second dielectric strip extending longitudinally along the inner surface of the second base, opposite the first dielectric strip.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: October 2, 2018
    Assignee: Sierra Nevada Corporation
    Inventors: Vladimir A. Manasson, Lev S. Sadovnik
  • Publication number: 20180175508
    Abstract: A steerable beam antenna includes a rotatable drum having a diffraction grating surface, and a waveguide feed including first and second conductive metal bases extending axially along the length of the drum, each of the bases having an inner surface spaced from and opposed to the inner surface of the other base, and a proximal surface spaced from the drum surface by a gap. First and second parallel conductive metal plates extend distally from the first and second bases, respectively, the first and second plates having respective inner surfaces separated by an inter-plate space. First and second dielectric strips are flush-mounted on the inner surfaces of the first and second conductive metal bases, respectively, the first dielectric strip extending longitudinally along the inner surface of the first base, and the second dielectric strip extending longitudinally along the inner surface of the second base, opposite the first dielectric strip.
    Type: Application
    Filed: December 21, 2016
    Publication date: June 21, 2018
    Applicant: SIERRA NEVADA CORPORATION
    Inventors: Vladimir A. Manasson, Lev S. Sadovnik
  • Patent number: 9698478
    Abstract: An electronically-controlled steerable beam antenna with suppressed parasitic scattering includes a feed line defining an axis x; and first and second arrays of electronically-controlled switchable scatters distributed along the axis x, each of the scatterers in the first and second arrays being switchable between a high state and a low state to scatter an electromagnetic wave propagating through the transmission line so as to form a steerable antenna beam. Each of the scatters of the second array is configured to be 180°-phase-shifted relative to a corresponding scatter of the first array. The switchable scatterers of the first and second arrays are configured into high states and low states relative to each other so as to suppress parasitic scattering of the electromagnetic wave without suppressing the steerable antenna beam.
    Type: Grant
    Filed: June 4, 2014
    Date of Patent: July 4, 2017
    Assignee: SIERRA NEVADA CORPORATION
    Inventors: Vladimir A. Manasson, Lev S. Sadovnik, Vladimir Litvinov
  • Publication number: 20150357711
    Abstract: An electronically-controlled steerable beam antenna with suppressed parasitic scattering includes a feed line defining an axis x; and first and second arrays of electronically-controlled switchable scatters distributed along the axis x, each of the scatterers in the first and second arrays being switchable between a high state and a low state to scatter an electromagnetic wave propagating through the transmission line so as to form a steerable antenna beam. Each of the scatters of the second array is configured to be 180°-phase-shifted relative to a corresponding scatter of the first array. The switchable scatterers of the first and second arrays are configured into high states and low states relative to each other so as to suppress parasitic scattering of the electromagnetic wave without suppressing the steerable antenna beam.
    Type: Application
    Filed: June 4, 2014
    Publication date: December 10, 2015
    Inventors: Vladimir A. Manasson, Lev S. Sadovnik, Vladimir Litvinov
  • Patent number: 8976066
    Abstract: A beam-forming antenna for transmission and/or reception of an electromagnetic signal having a given wavelength in a surrounding medium includes a transmission line electromagnetically coupled to an array of individually controllable antenna elements, each of which is oscillated by the signal with a controllable amplitude. The oscillation amplitude of each of the individual antenna elements is controlled by a switch. The antenna elements are arranged in various shapes such as a parabolic arc, a circular arc, a cylindrical surface or a conic surface. The antenna elements have various spacing such as uniform, parabolic, circular, or raised cosine.
    Type: Grant
    Filed: May 31, 2013
    Date of Patent: March 10, 2015
    Assignee: Sierra Nevada Corporation
    Inventors: Vladimir A. Manasson, Lev S. Sadovnik
  • Publication number: 20130321203
    Abstract: A beam-forming antenna for transmission and/or reception of an electromagnetic signal having a given wavelength in a surrounding medium includes a transmission line electromagnetically coupled to an array of individually controllable antenna elements, each of which is oscillated by the signal with a controllable amplitude. The oscillation amplitude of each of the individual antenna elements is controlled by a switch. The antenna elements are arranged in various shapes such as a parabolic arc, a circular arc, a cylindrical surface or a conic surface. The antenna elements have various spacing such as uniform, parabolic, circular, or raised cosine.
    Type: Application
    Filed: May 31, 2013
    Publication date: December 5, 2013
    Inventors: Vladimir A. Manasson, Lev S. Sadovnik
  • Patent number: 8456360
    Abstract: A beam-forming antenna for transmission and/or reception of an electromagnetic signal having a given wavelength in a surrounding medium includes a transmission line electromagnetically coupled to an array of individually controllable antenna elements, each of which is oscillated by the signal with a controllable amplitude. The oscillation amplitude of each of the individual antenna elements is controlled by a switch. The antenna elements are arranged in various shapes such as a parabolic arc, a circular arc, a cylindrical surface or a conic surface. The antenna elements have various spacing such as uniform, parabolic, circular, or raised cosine.
    Type: Grant
    Filed: December 29, 2010
    Date of Patent: June 4, 2013
    Assignee: Sierra Nevada Corporation
    Inventors: Vladimir A. Manasson, Lev S. Sadovnik
  • Publication number: 20110140965
    Abstract: A beam-forming antenna for transmission and/or reception of an electromagnetic signal having a given wavelength in a surrounding medium includes a transmission line electromagnetically coupled to an array of individually controllable antenna elements, each of which is oscillated by the signal with a controllable amplitude. The oscillation amplitude of each of the individual antenna elements is controlled by a switch. The antenna elements are arranged in various shapes such as a parabolic arc, a circular arc, a cylindrical surface or a conic surface. The antenna elements have various spacing such as uniform, parabolic, circular, or raised cosine.
    Type: Application
    Filed: December 29, 2010
    Publication date: June 16, 2011
    Inventors: Vladimir A. Manasson, Lev S. Sadovnik
  • Patent number: 7864112
    Abstract: A beam-forming antenna for transmission and/or reception of an electromagnetic signal having a given wavelength in a surrounding medium includes a transmission line electromagnetically coupled to an array of individually controllable antenna elements, each of which is oscillated by the signal with a controllable amplitude. The antenna elements are arranged in a linear array and are spaced from each other by a distance that does not exceed one-third the signal's wavelength in the surrounding medium. The oscillation amplitude of each of the individual antenna elements is controlled by an amplitude controlling device, such as a switch, a gain-controlled amplifier, or a gain-controlled attenuator. The amplitude controlling devices, in turn, are controlled by a computer that receives as its input the desired beamshape, and that is programmed to operate the amplitude controlling devices in accordance with a set of stored amplitude values derived empirically for a set of desired beamshapes.
    Type: Grant
    Filed: October 17, 2008
    Date of Patent: January 4, 2011
    Assignee: Sierra Nevada Corporation
    Inventors: Vladimir A. Manasson, Lev S. Sadovnik
  • Publication number: 20090167606
    Abstract: A beam-forming antenna for transmission and/or reception of an electromagnetic signal having a given wavelength in a surrounding medium includes a transmission line electromagnetically coupled to an array of individually controllable antenna elements, each of which is oscillated by the signal with a controllable amplitude. The antenna elements are arranged in a linear array and are spaced from each other by a distance that does not exceed one-third the signal's wavelength in the surrounding medium. The oscillation amplitude of each of the individual antenna elements is controlled by an amplitude controlling devices such as a switch, a gain-controlled amplifier, or a gain-controlled attenuator. The amplitude controlling devices, in turn, are controlled by a computer that receives as its input the desired beamshape, and that is programmed to operate the amplitude controlling devices in accordance with a set of stored amplitude values derived empirically for a set of desired beamshapes.
    Type: Application
    Filed: October 17, 2008
    Publication date: July 2, 2009
    Inventors: Vladimir A. Manasson, Lev S. Sadovnik
  • Patent number: 7456787
    Abstract: A beam-forming antenna for transmission and/or reception of an electromagnetic signal having a given wavelength in a surrounding medium includes a transmission line electromagnetically coupled to an array of individually controllable antenna elements, each of which is oscillated by the signal with a controllable amplitude. The antenna elements are arranged in a linear array and are spaced from each other by a distance that does not exceed one-third the signal's wavelength in the surrounding medium. The oscillation amplitude of each of the individual antenna elements is controlled by an amplitude controlling device, such as a switch, a gain-controlled amplifier, or a gain-controlled attenuator. The amplitude controlling devices, in turn, are controlled by a computer that receives as its input the desired beamshape, and that is programmed to operate the amplitude controlling devices in accordance with a set of stored amplitude values derived empirically for a set of desired beamshapes.
    Type: Grant
    Filed: August 11, 2005
    Date of Patent: November 25, 2008
    Assignee: Sierra Nevada Corporation
    Inventors: Vladimir A. Manasson, Lev S. Sadovnik
  • Patent number: 6750827
    Abstract: An improved millimeter wavelength antenna assembly having an input signal coupler, a dielectric waveguide, and a rotatable drum is disclosed. The input signal coupler reduces VSWR return losses and scattered radiation losses from the drum and matches a feeding waveguides characteristics to the dielectric waveguide. Embodiments of the invention include a reflector and a cylindrical lens to direct and form electromagnetic energy radiated by the antenna assembly.
    Type: Grant
    Filed: May 8, 2002
    Date of Patent: June 15, 2004
    Assignee: Waveband Corporation
    Inventors: Vladimir A. Manasson, Lev S. Sadovnik
  • Publication number: 20030210196
    Abstract: An improved millimeter wavelength antenna assembly having an input signal coupler, a dielectric waveguide, and a rotatable drum is disclosed. The input signal coupler reduces VSWR return losses and scattered radiation losses from the drum and matches a feeding waveguides characteristics to the dielectric waveguide. Embodiments of the invention include a reflector and a cylindrical lens to direct and form electromagnetic energy radiated by the antenna assembly.
    Type: Application
    Filed: May 8, 2002
    Publication date: November 13, 2003
    Inventors: Vladimir A. Manasson, Lev S. Sadovnik
  • Patent number: 5982334
    Abstract: Systems and methods for scanning antennas with plasma gratings are described. An apparatus includes a semiconductor slab and an electrode set or illuminating system to inject a plasma grating. The systems and methods provide advantages in the compactness and higher efficiency in comparison with existing antennas.
    Type: Grant
    Filed: October 31, 1997
    Date of Patent: November 9, 1999
    Assignee: WaveBand Corporation
    Inventors: Vladimir A. Manasson, Lev S. Sadovnik, Vladimir Yepishin
  • Patent number: 5959589
    Abstract: Systems and methods for thermal imagining are described. An apparatus includes a rotatable radial scanning antenna. The systems and methods provide advantages in that fires can be detected, and their positions determined, over substantial distances and through obscurants such as smoke and/or rain.
    Type: Grant
    Filed: July 2, 1997
    Date of Patent: September 28, 1999
    Assignee: WaveBand Corporation
    Inventors: Lev S. Sadovnik, Vladimir A. Manasson, Robert E. Chapman
  • Patent number: 5933120
    Abstract: Systems and methods for two dimensional millimeter wave imaging are described. A system includes a spindle assembly defining a rotation axis; a waveguide assembly connected to the spindle assembly, the waveguide assembly including a first dielectric waveguide defining a first axis; and a grating assembly connected to the spindle assembly, the grating assembly including a plurality of sectors, each of the plurality of sectors including a varying period conductive grating pattern. A varying period of the varying period conductive grating pattern is a function of an angle defined by a rotational position of the grating assembly with regard to the rotation axis. The systems and methods provide advantages in that an image can be scanned quickly using an inexpensive system.
    Type: Grant
    Filed: December 16, 1996
    Date of Patent: August 3, 1999
    Assignee: WaveBand Corporation
    Inventors: Vladimir A. Manasson, Lev S. Sadovnik
  • Patent number: 5886670
    Abstract: Systems and methods for guided wave antennas are described. Apparatus is disclosed comprising: a dielectric nonphotoconductive waveguide defining a principle axis; a grating carrier connected to the dielectric nonphotoconductive waveguide, the grating carrier i) including a photoconductive material and ii) defining a photoconductive axis that is substantially parallel to the principle axis; a spatial light modulator optically connected to the layer of photoconductive material; and a source of illumination optically connected to the spatial light modulator and the layer of photoconductive material.
    Type: Grant
    Filed: August 16, 1996
    Date of Patent: March 23, 1999
    Assignee: WaveBand Corporation
    Inventors: Vladimir Manasson, Lev S. Sadovnik
  • Patent number: 5815124
    Abstract: A scanning antenna is disclosed including: a rotatable cylinder having an outer surface; a continuously, or steppingly, varying period conductive grating pattern of separated strips on the outer surface, the varying conductive grating pattern of separated strips defining a grating axis; and a first elongated dielectric waveguide defining a first waveguide axis, the first elongated dielectric waveguide being located proximally adjacent and alongside the varying conductive grating pattern of separated strips so as to evanescently couple electromagnetic signals with the first elongated dielectric waveguide. The scanning antenna provides advantages in that the gain is high.
    Type: Grant
    Filed: July 30, 1996
    Date of Patent: September 29, 1998
    Assignee: Physical Optics Corporation
    Inventors: Vladimir A. Manasson, Lev S. Sadovnik, Paul I. Shnitser
  • Patent number: 5796881
    Abstract: Systems and methods for optical control of radar antenna beam steering are described. An apparatus includes: a feeder waveguide; and a waveguide array electromagnetically coupled to said feeder waveguide, said waveguide array including: a plurality arms, each of said plurality of arms including: a plasma induced modulator having a transmission coefficient that is .ltoreq.1, said plasma induced modulator including: a rib waveguide electromagnetically coupled to said feeder waveguide. The systems and methods provide advatages in that optical beam steering is achieved with a lightweight inexpensive apparatus.
    Type: Grant
    Filed: October 16, 1996
    Date of Patent: August 18, 1998
    Assignee: WaveBand Corporation
    Inventors: Vladimir A. Manasson, Lev S. Sadovnik
  • Patent number: 5764317
    Abstract: A volumetric multi-layer screen including a plurality of electrically switchable layers that are stacked and coextensive, each of the plurality of electrically switchable layers including: a first transparent dielectric substrate having a first side and a second side; a first transparent electrode coated on the first side of the first transparent substrate; and an electrically switchable polymer dispersed liquid-crystal film coated on the first transparent electrode.
    Type: Grant
    Filed: June 26, 1995
    Date of Patent: June 9, 1998
    Assignee: Physical Optics Corporation
    Inventors: Lev S. Sadovnik, Alexander Rizkin