Patents by Inventor Erik D. Lindskog

Erik D. Lindskog 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).

  • Calibration of differential frequency-dependent characteristics of a radio communications system
    Publication number: 20030098809
    Abstract: A method and apparatus are provided that determine a frequency dependent calibration vector for a set of transmit or receive chains of a radio communications system using only differential phase and amplitude between the transmit chains and the receive chains, respectively. In one embodiment, the invention includes an antenna array adapted to transmit and receive radio communications signals with a plurality of other terminals, a transmit chain to transmit a calibration signal through the antenna array to a transponder on at least two different frequency bands, and a receive chain to receive through the antenna array a transponder signal from the transponder, the transponder signal being received on at least two different frequency bands and being based on the calibration signal.
    Type: Application
    Filed: November 14, 2002
    Publication date: May 29, 2003
    Inventors: Erik D. Lindskog, Mitchell D. Trott, Adam B. Kerr
  • Calibration of differential frequency-dependent characteristics of a radio communications system
    Patent number: 6570527
    Abstract: A method and apparatus are provided that determine a frequency dependent calibration vector for a set of transmit or receive chains of a radio communications system using only differential phase and amplitude between the transmit chains and the receive chains, respectively. In one embodiment, the invention includes an antenna array adapted to transmit and receive radio communications signals with a plurality of other terminals, a transmit chain to transmit a calibration signal through the antenna array to a transponder on at least two different frequency bands, and a receive chain to receive through the antenna array a transponder signal from the transponder, the transponder signal being received on at least two different frequency bands and being based on the calibration signal.
    Type: Grant
    Filed: September 28, 2001
    Date of Patent: May 27, 2003
    Assignee: ArrayComm, Inc.
    Inventors: Erik D. Lindskog, Mitchell D. Trott, Adam B. Kerr
  • Frequency dependent calibration of a wideband radio system using narrowband channels
    Publication number: 20030064739
    Abstract: A method and apparatus are provided that determine group delay for a set of transmit or receive chains over a wide frequency band without causing significant interference with simultaneous users of the system. In one embodiment, the invention includes an antenna array adapted to transmit and receive radio communications signals with a plurality of other terminals, the communications signals each using a particular minimum bandwidth, a transmit chain to transmit a calibration signal through the antenna array to a transponder on at least two different frequency bands within the minimum bandwidth, and a receive chain to receive through the antenna array a transponder signal from the transponder, the transponder signal being received on at least two different frequency bands and being based on the calibration signal. A signal processor determines a frequency dependent calibration vector based on the at least two frequency bands of the transponder signal as received through the receive chain.
    Type: Application
    Filed: September 28, 2001
    Publication date: April 3, 2003
    Inventors: Erik D. Lindskog, Mitchell D. Trott, Adam B. Kerr