Patents by Inventor Timothy M. Schaefer

Timothy M. 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: 20250055737
    Abstract: An adaptive filter protocol stored on a non-transitory computer readable medium that is operatively in communication with a processor of a platform. The adaptive filter protocol includes a first processing loop that is operatively in communication with at least one receiving device of the platform for receiving at least one input signal. The adaptive filter protocol also includes a second processing loop that is operatively in communication with the first processing loop and has a deterministic gradient descent optimization logic and an interpolation logic. When the at least one receiving device receives the at least one input signal, the adaptive filter protocol enables the processor to generate a refined match filter parameters that substantially correlates with the initial parameters of the at least one input signal upon completing a plurality of refining cycles of the second processing loop.
    Type: Application
    Filed: August 8, 2023
    Publication date: February 13, 2025
    Applicant: BAE Systems Information and Electronic Systems Integration Inc.
    Inventors: Timothy M. Schaefer, David J. Couto
  • Patent number: 12224890
    Abstract: An adaptive filter protocol stored on a non-transitory computer readable medium that is operatively in communication with a processor of a platform. The adaptive filter protocol includes a first processing loop that is operatively in communication with at least one receiving device of the platform for receiving at least one input signal. The adaptive filter protocol also includes a second processing loop that is operatively in communication with the first processing loop and has a deterministic gradient descent optimization logic and an interpolation logic. When the at least one receiving device receives the at least one input signal, the adaptive filter protocol enables the processor to generate a refined match filter parameters that substantially correlates with the initial parameters of the at least one input signal upon completing a plurality of refining cycles of the second processing loop.
    Type: Grant
    Filed: August 8, 2023
    Date of Patent: February 11, 2025
    Assignee: BAE Systems Information and Electronic Systems Integration Inc.
    Inventors: Timothy M. Schaefer, David J. Couto
  • Patent number: 10090929
    Abstract: The drone-based radio-over-fiber system provides an unmanned aerial vehicle (AV), preferably a multi-rotor drone, connected to a base station by a tether including an optical fiber. A radio frequency-over-fiber system is used for bidirectional data communications between at least one radio frequency (RF) transmitter at the base station and at least one antenna mounted on the drone through the optical fiber in the tether. The system includes wave division multiplexers/demultiplexers that permit ultrahigh bandwidth communication over the tether. An embodiment of the system for 2×2 multiple-input, multiple-output (MIMO) signals in the 700 MHz LTE band is described.
    Type: Grant
    Filed: April 10, 2018
    Date of Patent: October 2, 2018
    Assignee: EQUINOX INNOVATIVE SYSTEMS LLC
    Inventors: Randal T. Morser, Timothy M. Schaefer
  • Publication number: 20180234186
    Abstract: The drone-based radio-over-fiber system provides an unmanned aerial vehicle (AV), preferably a multi-rotor drone, connected to a base station by a tether including an optical fiber. A radio frequency-over-fiber system is used for bidirectional data communications between at least one radio frequency (RF) transmitter at the base station and at least one antenna mounted on the drone through the optical fiber in the tether. The system includes wave division multiplexers/demultiplexers that permit ultrahigh bandwidth communication over the tether. An embodiment of the system for 2×2 multiple-input, multiple-output (MIMO) signals in the 700 MHz LTE band is described.
    Type: Application
    Filed: April 10, 2018
    Publication date: August 16, 2018
    Inventors: RANDAL T. MORSER, TIMOTHY M. SCHAEFER
  • Publication number: 20180191439
    Abstract: The drone-based radio-over-fiber system provides an unmanned aerial vehicle (AV), preferably a multi-rotor drone, connected to a base station by a tether including an optical fiber. A radio frequency-over-fiber system is used for bidirectional data communications between at least one radio frequency (RF) transmitter at the base station and at least one antenna mounted on the drone through the optical fiber in the tether. The system includes wave division multiplexers/demultiplexers that permit ultrahigh bandwidth communication over the tether. An embodiment of the system for 2×2 multiple-input, multiple-output (MIMO) signals in the 700 MHz LTE band is described.
    Type: Application
    Filed: May 9, 2017
    Publication date: July 5, 2018
    Inventors: RANDAL T. MORSER, TIMOTHY M. SCHAEFER
  • Publication number: 20080262320
    Abstract: A system for monitoring a physical parameter of a subject includes a sensor, a transmitter, a repeater, and a base station. The sensor is located within the body of the subject and is operable to sense a physical parameter of the subject. The transmitter is electrically connected to the sensor, and is operable to transmit a spread spectrum encoded signal using a digital spreading code, the encoded signal carrying information indicative of the sensed physical parameter and being transmitted to a local region outside the body. The repeater is located in the local region, is movable with the subject, and is operable to receive the transmitted encoded signal and retransmit it to a remote region outside the body. The base station is located in the remote region and is operable to receive and decode the retransmitted encoded signal.
    Type: Application
    Filed: June 28, 2006
    Publication date: October 23, 2008
    Inventors: Timothy M. Schaefer, Daivd R. Holmes, Jonathan D. Coker, Edward B. Welch, Barry K. Gilbert, Kenton R. Kaufman
  • Patent number: 6798315
    Abstract: A micro-electrical-mechanical system (MEMS) switch. The switch includes a compliant spring that supports a contact shuttle for movement in a lateral direction generally parallel to the substrate and biases the contact shuttle to a normally open switch state position. A plurality of moving electrodes are coupled to the contact shuttle. A plurality of fixed electrodes are interleaved with the moving electrodes. The moving electrodes and the fixed electrodes have generally planar major surfaces perpendicular to the plane of the substrate. Electrostatic forces developed between the fixed and moving electrodes cause the contact shuttle to move to a closed switch state position in response to the application of an actuation voltage. The moving direction of the moving electrodes and the contact shuttle is along a longitudinal axis parallel to the substrate and perpendicular to the planar major surfaces of the electrodes.
    Type: Grant
    Filed: December 4, 2001
    Date of Patent: September 28, 2004
    Assignee: Mayo Foundation for Medical Education and Research
    Inventor: Timothy M. Schaefer
  • Publication number: 20030102936
    Abstract: A micro-electrical-mechanical system (MEMS) switch. The switch includes a compliant spring that supports a contact shuttle for movement in a lateral direction generally parallel to the substrate and biases the contact shuttle to a normally open switch state position. A plurality of moving electrodes are coupled to the contact shuttle. A plurality of fixed electrodes are interleaved with the moving electrodes. The moving electrodes and the fixed electrodes have generally planar major surfaces perpendicular to the plane of the substrate. Electrostatic forces developed between the fixed and moving electrodes cause the contact shuttle to move to a closed switch state position in response to the application of an actuation voltage. The moving direction of the moving electrodes and the contact shuttle is along a longitudinal axis parallel to the substrate and perpendicular to the planar major surfaces of the electrodes.
    Type: Application
    Filed: December 4, 2001
    Publication date: June 5, 2003
    Inventor: Timothy M. Schaefer