Patents by Inventor Douglas Allan Pietila

Douglas Allan Pietila 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: 10236572
    Abstract: Embodiments described herein provide for integrating a transmit phased-array (Tx) antenna and a receive phased-array (Rx) antenna onto an electrically-conductive plate that forms a ground plane. The plate includes groves that operate as an RF choke. The RF choke mitigates the energy coupling between the Tx antenna and the Rx antenna. Spatial features of the grooves are selected based on a scan angle of at least one of the Tx antenna and the Rx antenna. Due to the electronic scanning performed by the Tx antenna and the Rx antenna, the energy coupling between the Tx antenna and the Rx antenna dynamically varies and may depend upon the relative scan angles between main beams of the antennas. The energy coupling may also depend upon the side lobe energy pattern of the Tx antenna, which varies based on the scan angle of the Tx antenna.
    Type: Grant
    Filed: April 25, 2018
    Date of Patent: March 19, 2019
    Assignee: The Boeing Company
    Inventors: David Lee Mohoric, Douglas Allan Pietila, David N. Rasmussen, Robert T. Worl
  • Publication number: 20180241121
    Abstract: Embodiments described herein provide for integrating a transmit phased-array (Tx) antenna and a receive phased-array (Rx) antenna onto an electrically-conductive plate that forms a ground plane. The plate includes groves that operate as an RF choke. The RF choke mitigates the energy coupling between the Tx antenna and the Rx antenna. Spatial features of the grooves are selected based on a scan angle of at least one of the Tx antenna and the Rx antenna. Due to the electronic scanning performed by the Tx antenna and the Rx antenna, the energy coupling between the Tx antenna and the Rx antenna dynamically varies and may depend upon the relative scan angles between main beams of the antennas. The energy coupling may also depend upon the side lobe energy pattern of the Tx antenna, which varies based on the scan angle of the Tx antenna.
    Type: Application
    Filed: April 25, 2018
    Publication date: August 23, 2018
    Inventors: David Lee Mohoric, Douglas Allan Pietila, David N. Rasmussen, Robert T. Worl
  • Patent number: 9761939
    Abstract: A phased array antenna for a mobile platform combines transmit and receive antennas within a common, low profile enclosure. Transmit and receive functions, a power supply, up and down frequency converters, and an antenna controller are integrated into closely packaged layers within the enclosure.
    Type: Grant
    Filed: August 17, 2015
    Date of Patent: September 12, 2017
    Assignee: THE BOEING COMPANY
    Inventors: Douglas Allan Pietila, David Lee Mohoric, Michael de La Chapelle
  • Publication number: 20170117625
    Abstract: Embodiments described herein provide for integrating a pair of phased-array antennas onto a common electrically-conductive plate, with groves fabricated into a top surface of the plate that operate as an RF choke. One embodiment comprises an apparatus that includes an electrically-conductive plate that has a top surface and an opposing bottom surface, a transmit phased-array antenna comprising a first plurality of holes through the plate from the top surface to the bottom surface that include RF transmit elements, and a receive phased-array antenna comprising a second plurality of holes through the plate from the top surface to the bottom surface that include RF receive elements. The apparatus further includes a plurality of grooves fabricated on the top surface of the plate that attenuate EM radiation induced on the receive phased-array antenna by the transmit phased-array antenna by a pre-defined amount.
    Type: Application
    Filed: October 27, 2015
    Publication date: April 27, 2017
    Inventors: David Lee Mohoric, Douglas Allan Pietila, David N. Rasmussen, Robert T. Worl
  • Publication number: 20170054208
    Abstract: A phased array antenna for a mobile platform combines transmit and receive antennas within a common, low profile enclosure. Transmit and receive functions, a power supply, up and down frequency converters, and an antenna controller are integrated into closely packaged layers within the enclosure.
    Type: Application
    Filed: August 17, 2015
    Publication date: February 23, 2017
    Inventors: Douglas Allan Pietila, David Lee Mohoric, Michael de La Chapelle
  • Patent number: 6580402
    Abstract: An integrated ceramic chip carrier module for a phased array antenna. The module is comprised of a plurality of layers of low temperature, co-fired ceramic formed into an integrated module. The module combines the injection molded probes, button layer and holder, and the ceramic chip carrier into a single integrated component part. This construction provides for improved performance, reliability, manufacturing repeatability, and lower overall antenna manufacturing costs.
    Type: Grant
    Filed: July 26, 2001
    Date of Patent: June 17, 2003
    Assignee: The Boeing Company
    Inventors: Julio Angel Navarro, Douglas Allan Pietila
  • Publication number: 20030020654
    Abstract: An integrated ceramic chip carrier module for a phased array antenna. The module is comprised of a plurality of layers of low temperature, co-fired ceramic formed into an integrated module. The module combines the injection molded probes, button layer and holder, and the ceramic chip carrier into a single integrated component part. This construction provides for improved performance, reliability, manufacturing repeatability, and lower overall antenna manufacturing costs.
    Type: Application
    Filed: July 26, 2001
    Publication date: January 30, 2003
    Inventors: Julio Angel Navarro, Douglas Allan Pietila
  • Patent number: 6424313
    Abstract: An electronically steerable phased array antenna module having a conformable circuit element. The conformable circuit element forms a packaging architecture which includes a flexible substrate on which the control electronics of the antenna can be mounted directly or electrically coupled to the flexible substrate. The radiating elements are integrally formed on the substrate together with monolithic transmission lines which couple the radiating elements to the integrated circuits forming the control electronics. In one preferred embodiment, integrated power combiner/splitters may be integrally formed on the conformable circuit element and integrated transmission feed lines are formed on the circuit element coupling the power combiner/splitter circuits to the control electronics.
    Type: Grant
    Filed: August 29, 2000
    Date of Patent: July 23, 2002
    Assignee: The Boeing Company
    Inventors: Julio Angel Navarro, Douglas Allan Pietila, Dietrich E. Riemer