Patents by Inventor Richard Behrens

Richard Behrens 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: 20190217960
    Abstract: An air conditioning pack includes an air cycle assembly, a vapor cycle system, and a mixing duct. The air cycle assembly is configured to receive bleed air and utilize the bleed air to compress ram air. The vapor cycle system is configured to receive the compressed ram air and to reduce an operating temperature of the compressed ram air. The mixing duct is configured to receive the compressed ram air and mix the compressed ram air with the bleed air to generate a hybrid air stream that is used for cooling at least a portion of a vehicle.
    Type: Application
    Filed: January 16, 2018
    Publication date: July 18, 2019
    Applicant: THE BOEING COMPANY
    Inventors: William Webster Behrens, Andrew Richard Tucker
  • Patent number: 8843080
    Abstract: Radio-frequency (RF) apparatus includes receiver analog circuitry that receives an RF signal and provides at least one digital signal to receiver digital circuitry that functions in cooperation with the receiver analog circuitry. The receiver analog circuitry and the receiver digital circuitry are partitioned so that interference effects between the receiver analog circuitry and the receiver digital circuitry tend to be reduced.
    Type: Grant
    Filed: December 31, 2012
    Date of Patent: September 23, 2014
    Assignee: Silicon Laboratories Inc.
    Inventors: Donald Kerth, Richard Behrens, Jeffrey Scott, G. Diwakar Vishakhadatta, G. Tyson Tuttle, Vishnu Srinivasan
  • Publication number: 20070054629
    Abstract: Components of a radio-frequency (RF) apparatus including transceiver circuitry and frequency modification circuitry of a crystal oscillator circuit that generates a reference signal with adjustable frequency may be partitioned in a variety of ways, for example, as one or more separate integrated circuits. The frequency modification circuitry may be implemented as part of a crystal oscillator circuit that includes digitally controlled crystal oscillator (“DCXO”) circuitry and a crystal. The frequency modification circuitry may include at least one variable capacitance device and may be employed to generate a reference signal with adjustable frequency. The adjustable reference signal may be provided to other components of the RF apparatus and/or the RF apparatus may be configured to provide the adjustable reference signal to baseband processor circuitry.
    Type: Application
    Filed: December 8, 2003
    Publication date: March 8, 2007
    Inventors: James Maligeorgos, Augusto Marques, Lysander Lim, G. Tuttle, Aslamali Rafi, Tod Paulus, Gregory Uehara, Jeffrey Scott, Richard Behrens, Donald Kerth, G. Vishakhadatta, Vishnu Srinivasan, Caiyi Wang
  • Publication number: 20060141973
    Abstract: A radio-frequency (RF) receiver includes a receiver analog circuitry and a receiver digital circuitry. The receiver analog circuitry resides within a first integrated circuit and the receiver digital circuitry resides within a second integrated circuit. The second integrated circuit couples to the first integrated circuit via a one-bit digital interface. The receiver analog circuitry receives an RF signal and processes the received RF signal to generate a digital signal. The receiver analog circuitry provides the digital signal to the receiver digital circuitry. The receiver digital circuitry includes a digital down-converter circuitry that mixes the digital signal with an intermediate frequency (IF) local oscillator (LO) signal to generate a digital down-converted signal. The receiver digital circuitry also includes a digital filter circuitry that filters the digital down-converted signal to generate a filtered digital signal.
    Type: Application
    Filed: November 28, 2005
    Publication date: June 29, 2006
    Inventors: Richard Behrens, Tod Paulus, Mark Spurbeck, Vishnu Srinivasan, Donald Kerth, Jeffrey Scott, G. Tuttle, G. Vishakhadatta
  • Publication number: 20060072688
    Abstract: A wireless communication system is provided that detects a frequency burst (FB) through analysis of the autocorrelation function of received signals. The system can accommodate the relatively large frequency offsets that are associated with less expensive reference frequency crystals. In one embodiment, the system includes FB search hardware that operates in two modes, namely an FB location mode with narrowband interference (e.g. CW or continuous wave) detection and an FB location mode without such narrowband interference detection, depending on whether a CW signal (carrier or other narrowband interferer) is present or not.
    Type: Application
    Filed: September 30, 2004
    Publication date: April 6, 2006
    Applicant: Silicon Laboratories Inc.
    Inventors: Jing Liang, Marvin Vis, Richard Behrens
  • Publication number: 20060067437
    Abstract: A wireless communication system is provided that detects a frequency burst (FB) through analysis of the autocorrelation function of received signals. The system can accommodate the relatively large frequency offsets that are associated with less expensive reference frequency crystals. The system employs a multi-mode filter including an FB filter and a channelization filter. In one embodiment, the FB filter is employed until an FB is located and then, once the FB is located, the channelization filter is employed to receive signals.
    Type: Application
    Filed: September 30, 2004
    Publication date: March 30, 2006
    Applicant: Silicon Laboratories Inc.
    Inventors: Marvin Vis, Jing Liang, Richard Behrens, Samuel Rousselin
  • Publication number: 20050003762
    Abstract: Radio-frequency (RF) apparatus includes receiver analog circuitry that receives an RF signal and provides at least one digital signal to receiver digital circuitry that functions in cooperation with the receiver analog circuitry. The receiver analog circuitry and the receiver digital circuitry are partitioned so that interference effects between the receiver analog circuitry and the receiver digital circuitry tend to be reduced.
    Type: Application
    Filed: June 28, 2004
    Publication date: January 6, 2005
    Inventors: Donald Kerth, Richard Behrens, Jeffrey Scott, G. Vishakhadatta, G. Tuttle, Vishnu Srinivasan