Patents by Inventor Jeff Schaefer

Jeff Schaefer 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).

  • Publication number: 20170336502
    Abstract: Methods and systems for correcting leakage and/or distortion in radar systems include defining an integration time period, dividing the integration time period into a first sub-period and a second sub-period, at least partially transmitting a transmission radar signal during the first sub-period of the integration time period, not transmitting at all during the second sub-period of the integration time period, integrating the detected signal during both the first sub-period and the second sub-period, and subtracting a last sampled integrated value of the second sub-period from a last sampled integrated value of the first sub-period to generate a corrected integrated value for the integration time period.
    Type: Application
    Filed: May 1, 2017
    Publication date: November 23, 2017
    Applicant: Autoliv ASP, Inc.
    Inventors: Xueru Ding, Walter Poiger, Jeff Schaefer
  • Patent number: 9769951
    Abstract: A housing for a radar sensor module has a back surface and a plurality of side surfaces connected to the back surface. A vent structure is connected to the back surface and at least one of the side surfaces. The vent structure includes an enclosure enclosing a chamber. A first opening in the vent structure penetrates the at least one of the side surfaces of the housing, such that the chamber is exposed to an exterior of the housing. A second opening in the vent structure penetrates the enclosure such that the chamber is exposed to an interior of the housing.
    Type: Grant
    Filed: July 8, 2015
    Date of Patent: September 19, 2017
    Assignee: Autoliv ASP, Inc.
    Inventors: Xueru Ding, Jeff Schaefer, Richard Leung
  • Patent number: 9638794
    Abstract: Methods and systems for correcting leakage and/or distortion in radar systems include defining an integration time period, dividing the integration time period into a first sub-period and a second sub-period, at least partially transmitting a transmission radar signal during the first sub-period of the integration time period, not transmitting at all during the second sub-period of the integration time period, integrating the detected signal during both the first sub-period and the second sub-period, and subtracting a last sampled integrated value of the second sub-period from a last sampled integrated value of the first sub-period to generate a corrected integrated value for the integration time period.
    Type: Grant
    Filed: January 23, 2014
    Date of Patent: May 2, 2017
    Assignee: Autoliv ASP, Inc.
    Inventors: Xueru Ding, Walter Poiger, Jeff Schaefer
  • Publication number: 20170013741
    Abstract: A housing for a radar sensor module has a back surface and a plurality of side surfaces connected to the back surface. A vent structure is connected to the back surface and at least one of the side surfaces. The vent structure includes an enclosure enclosing a chamber. A first opening in the vent structure penetrates the at least one of the side surfaces of the housing, such that the chamber is exposed to an exterior of the housing. A second opening in the vent structure penetrates the enclosure such that the chamber is exposed to an interior of the housing.
    Type: Application
    Filed: July 8, 2015
    Publication date: January 12, 2017
    Inventors: Xueru Ding, Jeff Schaefer, Richard Leung
  • Patent number: 9121930
    Abstract: An apparatus for determining the position of a target object using a two-channel monopulse radar. The radar may include two transmitting antennas and one common receiving antenna disposed in a coplanar arrangement. The transmitting antennas may be positioned on the focal plane of the radar along a focal plane axis that extends through, and that is perpendicular with, a boresight axis of the radar. The transmitting antennas may be spaced apart from one another in a first dimension a distance equal to about one half of one wavelength of the radar's center operating frequency. One of the transmitting antennas may be squinted at an angle of ?1 relative to the boresight axis and the other transmitting antenna may be squinted at an angle of ?2 relative to the boresight axis in a second dimension. The transmitting antennas are not squinted relative to one another in the first dimension.
    Type: Grant
    Filed: June 25, 2012
    Date of Patent: September 1, 2015
    Assignee: Autoliv ASP, Inc.
    Inventors: Xueru Ding, Jeff Schaefer, Matthew Marple
  • Publication number: 20150204968
    Abstract: Methods and systems for correcting leakage and/or distortion in radar systems include defining an integration time period, dividing the integration time period into a first sub-period and a second sub-period, at least partially transmitting a transmission radar signal during the first sub-period of the integration time period, not transmitting at all during the second sub-period of the integration time period, integrating the detected signal during both the first sub-period and the second sub-period, and subtracting a last sampled integrated value of the second sub-period from a last sampled integrated value of the first sub-period to generate a corrected integrated value for the integration time period.
    Type: Application
    Filed: January 23, 2014
    Publication date: July 23, 2015
    Applicant: AUTOLIV ASP, INC.
    Inventors: Xueru Ding, Walter Poiger, Jeff Schaefer
  • Publication number: 20150061921
    Abstract: An apparatus for determining the position of a target object using a two-channel monopulse radar. The radar may include two transmitting antennas and one common receiving antenna disposed in a coplanar arrangement. The transmitting antennas may be positioned on the focal plane of the radar along a focal plane axis that extends through, and that is perpendicular with, a boresight axis of the radar. The transmitting antennas may be spaced apart from one another in a first dimension a distance equal to about one half of one wavelength of the radar's center operating frequency. One of the transmitting antennas may be squinted at an angle of ?1 relative to the boresight axis and the other transmitting antenna may be squinted at an angle of ?2 relative to the boresight axis in a second dimension. The transmitting antennas are not squinted relative to one another in the first dimension.
    Type: Application
    Filed: June 25, 2012
    Publication date: March 5, 2015
    Applicant: AUTOLIV, INC.
    Inventors: Xueru Ding, Jeff Schaefer, Matthew Marple