Patents by Inventor Andrew LITTEER

Andrew LITTEER 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: 11855359
    Abstract: Disclosed is a high performance low cost multiband antenna configuration that has a low band dipole having dipole arms formed of stamped sheet metal with a plurality of inductor structures. The plurality of inductor structures are oriented along a longitudinal axis of the low band dipole arm, and others are oriented orthogonal to the longitudinal axis. The plurality of the inductor structures act as cloaking structures that make the low band dipole substantially transparent to high band RF energy without inhibiting the performance of the dipole in the low band.
    Type: Grant
    Filed: October 5, 2021
    Date of Patent: December 26, 2023
    Assignee: John Mezzalingua Associates, LLC
    Inventors: Niranjan Sundararajan, Charles Buondelmonte, Andrew Litteer, Wengang Chen
  • Patent number: 11664592
    Abstract: Disclosed is a phase shifter arrangement for an antenna, such as a cellular antenna, that has a simplified drive mechanism. The phase shifter arrangement has two phase shifters, each with two wiper arms that are coupled at one end to a single drive shaft. Each of the wiper arms have a pivot access that may be located at or near its center such that as the drive shaft translates, it mechanically engages both wiper arms, causing them to rotate around their respective pivot axes. Certain antenna arrangements have several array faces. For example, the antenna may have three array faces, each spaced at 120 degrees of azimuth. The drive shafts for each of these array faces may operate independently to function as a multisector antenna, or they may be driven in unison to function as an omnidirectional antenna.
    Type: Grant
    Filed: August 30, 2021
    Date of Patent: May 30, 2023
    Assignee: John Mezzalingua Associates, LLC
    Inventor: Andrew Litteer
  • Publication number: 20220037804
    Abstract: Disclosed is a high performance low cost multiband antenna configuration that has a low band dipole having dipole arms formed of stamped sheet metal with a plurality of inductor structures. The plurality of inductor structures are oriented along a longitudinal axis of the low band dipole arm, and others are oriented orthogonal to the longitudinal axis. The plurality of the inductor structures act as cloaking structures that make the low band dipole substantially transparent to high band RF energy without inhibiting the performance of the dipole in the low band.
    Type: Application
    Filed: October 5, 2021
    Publication date: February 3, 2022
    Inventors: Niranjan SUNDARARAJAN, Charles BUONDELMONTE, Andrew LITTEER, Wengang CHEN
  • Publication number: 20210391649
    Abstract: Disclosed is a phase shifter arrangement for an antenna, such as a cellular antenna, that has a simplified drive mechanism. The phase shifter arrangement has two phase shifters, each with two wiper arms that are coupled at one end to a single drive shaft. Each of the wiper arms have a pivot access that may be located at or near its center such that as the drive shaft translates, it mechanically engages both wiper arms, causing them to rotate around their respective pivot axes. Certain antenna arrangements have several array faces. For example, the antenna may have three array faces, each spaced at 120 degrees of azimuth. The drive shafts for each of these array faces may operate independently to function as a multisector antenna, or they may be driven in unison to function as an omnidirectional antenna.
    Type: Application
    Filed: August 30, 2021
    Publication date: December 16, 2021
    Applicant: John Mezzalingua Associates, LLC
    Inventor: Andrew Litteer
  • Patent number: 11145994
    Abstract: Disclosed is a high performance low cost multiband antenna configuration that has a low band dipole having dipole arms formed of stamped sheet metal that has a plurality of slots. Some of the slots are oriented along a longitudinal axis of the low band dipole arm, and others are oriented orthogonal to the longitudinal axis. The presence of the slots creates a plurality of inductor structures, which act has cloaking structures that make the low band dipole substantially transparent to high band RF energy without inhibiting the performance of the dipole in the low band.
    Type: Grant
    Filed: October 25, 2018
    Date of Patent: October 12, 2021
    Assignee: JOHN MEZZALINGUA ASSOCIATES, LLC
    Inventors: Niranjan Sundararajan, Charles Buondelmonte, Andrew Litteer, Wengang Chen
  • Patent number: 11108154
    Abstract: Disclosed is a phase shifter arrangement for an antenna, such as a cellular antenna, that has a simplified drive mechanism. The phase shifter arrangement has two phase shifters, each with two wiper arms that are coupled at one end to a single drive shaft. Each of the wiper arms have a pivot access that may be located at or near its center such that as the drive shaft translates, it mechanically engages both wiper arms, causing them to rotate around their respective pivot axes. Certain antenna arrangements have several array faces. For example, the antenna may have three array faces, each spaced at 120 degrees of azimuth. The drive shafts for each of these array faces may operate independently to function as a multisector antenna, or they may be driven in unison to function as an omnidirectional antenna.
    Type: Grant
    Filed: April 23, 2019
    Date of Patent: August 31, 2021
    Assignee: JOHN MEZZALINGUA ASSOCIATES, LLC
    Inventor: Andrew Litteer
  • Publication number: 20210151879
    Abstract: Disclosed is a phase shifter arrangement for an antenna, such as a cellular antenna, that has a simplified drive mechanism. The phase shifter arrangement has two phase shifters, each with two wiper arms that are coupled at one end to a single drive shaft. Each of the wiper arms have a pivot access that may be located at or near its center such that as the drive shaft translates, it mechanically engages both wiper arms, causing them to rotate around their respective pivot axes. Certain antenna arrangements have several array faces. For example, the antenna may have three array faces, each spaced at 120 degrees of azimuth. The drive shafts for each of these array faces may operate independently to function as a multisector antenna, or they may be driven in unison to function as an omnidirectional antenna.
    Type: Application
    Filed: April 23, 2019
    Publication date: May 20, 2021
    Applicant: John Mezzalingua Associates, LLC
    Inventor: Andrew Litteer
  • Publication number: 20200328533
    Abstract: Disclosed is a high performance low cost multiband antenna configuration that has a low band dipole having dipole arms formed of stamped sheet metal that has a plurality of slots. Some of the slots are oriented along a longitudinal axis of the low band dipole arm, and others are oriented orthogonal to the longitudinal axis. The presence of the slots creates a plurality of inductor structures, which act has cloaking structures that make the low band dipole substantially transparent to high band RF energy without inhibiting the performance of the dipole in the low band.
    Type: Application
    Filed: October 25, 2018
    Publication date: October 15, 2020
    Inventors: Niranjan SUNDARARAJAN, Charles BUONDELMONTE, Andrew LITTEER, Wengang CHEN