Patents by Inventor Conor O'Keefe

Conor O'Keefe 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: 8665846
    Abstract: A wireless communication system comprises a network element (315) operably coupled to an antenna array for communicating with a remote wireless communication unit (305). The antenna array comprises a plurality of radiating elements where at least one first radiating element of the plurality of radiating elements is arranged to create a radiation pattern that comprises a sector beam (405). The plurality of radiating elements comprises at least one second radiating element arranged to create a major portion of at least one sub-sector beam (420, 425, 430) within the sector beam (405).
    Type: Grant
    Filed: February 10, 2010
    Date of Patent: March 4, 2014
    Assignee: Socowave Technologies Limited
    Inventor: Conor O'Keefe
  • Publication number: 20130235962
    Abstract: A multiple input multiple output (MIMO) calibration device (360) for calibrating a phase relationship between at least two signals present on at least two radio frequency (RF) paths coupling a wireless communication unit and the MIMO calibration device (360) is described. The MIMO calibration device (360) is operably coupleable via at least two RF paths between a wireless communication unit and an antenna arrangement (219).
    Type: Application
    Filed: November 15, 2011
    Publication date: September 12, 2013
    Applicant: SOCOWAVE TECHNOLOGIES LIMITED
    Inventors: Conor O'Keefe, Michael O'Brien
  • Patent number: 8189717
    Abstract: A slot-based radio signal at a carrier frequency is received, the radio signal including successive frames, each frame including a set of reception time slots, to producing an input signal. A local oscillator signal is produced, In-phase and Quadrature components having a local oscillator frequency. The input signal is mixed with the local oscillator signal and Intermediate Frequency signal In-phase and Quadrature components are produced. The local oscillator frequency of the local oscillator signal changes relative to the carrier frequency of the input signal multiple times during the reception time slots of each of the frames between two frequency values. One frequency is greater and the other frequency is smaller than the carrier frequency. Frequencies of Intermediate Frequency components are selectively passed within a low Intermediate Frequency range and frequencies outside said low Intermediate Frequency range are rejected so as to produce filtered signal components.
    Type: Grant
    Filed: February 15, 2010
    Date of Patent: May 29, 2012
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Nadim Khlat, Conor O'Keefe, Patrick J. Pratt
  • Publication number: 20100144301
    Abstract: A slot-based low Intermediate Frequency (‘IF’) radio receiver comprises an IF local oscillator (3, 5, 19) for producing I and Q IF local oscillator signal components in phase quadrature, I and Q mixer channels (4, 6) for mixing the input signal with the I and Q IF local oscillator signal components to produce I and Q IF signal components. The IF local oscillator (3, 5, 19) includes frequency alternation means (20) for causing the IF local oscillator frequency to alternate a plurality of times during each frame between first and second values, one of which is greater and the other smaller than the desired carrier frequency of the input signal so as to reduce the effect of adjacent and alternate interferers. The phase of the baseband local oscillator (12, 13) is alternated in synchronism with the alternation of the IF local oscillator frequency.
    Type: Application
    Filed: February 15, 2010
    Publication date: June 10, 2010
    Applicant: FREESCALE SEMICONDUCTOR, INC.
    Inventors: NADIM KHLAT, CONOR O'KEEFE, PATRICK J. PRATT
  • Patent number: 7697632
    Abstract: A slot-based low Intermediate Frequency (‘IF’) radio receiver comprises an IF local oscillator for producing I and Q IF local oscillator signal components in phase quadrature, and I and Q mixer channels for mixing the input signal with the I and Q IF local oscillator signal components to produce I and Q IF signal components. The IF local oscillator frequency alternates a plurality of times during each frame between first and second values, one of which is greater and the other smaller than the desired carrier frequency of the input signal so as to reduce the effect of adjacent and alternate interferers. The phase of the baseband local oscillator is alternated in synchronism with the alternation of the IF local oscillator frequency.
    Type: Grant
    Filed: December 22, 2004
    Date of Patent: April 13, 2010
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Nadim Khlat, Conor O'Keefe, Patrick J. Pratt
  • Publication number: 20080207141
    Abstract: Methods and device for transmitting a sequence of transmission bursts in a wireless device. The method includes transmitting a sequence of transmission bursts according to a transmission schedule. The method is characterized by: receiving, at a radio frequency integrated circuit, prior to a transmission of at least one transmission burst of the sequence, information representative of the timing of the transmission of the at least one transmission burst; and generating timing signals, by the radio frequency integrated circuit that implement the transmission schedule. A wireless device includes a base band integrated circuit adapted to determine a transmission schedule of a sequence of transmission bursts. The wireless device is characterized by including a radio frequency integrated circuit that is adapted receive information representative of the timing schedule and to autonomously control a transmission of the sequence of transmission bursts.
    Type: Application
    Filed: March 30, 2005
    Publication date: August 28, 2008
    Applicant: Freescale Semiconductor , Inc.
    Inventors: Conor O'Keefe, Denis Dineen, Paul Kelleher
  • Publication number: 20070165748
    Abstract: A slot-based low Intermediate Frequency (‘IF’) radio receiver comprises an IF local oscillator for producing I and Q IF local oscillator signal components in phase quadrature, I and Q mixer channels for mixing the input signal with the I and Q IF local oscillator signal components to produce I and Q IF signal components. The IF local oscillator includes frequency alternation means for causing the IF local oscillator frequency to alternate a plurality of times during each frame between first and second values, one of which is greater and the other smaller than the desired carrier frequency of the input signal so as to reduce the effect of adjacent and alternate interferers. The phase of the baseband local oscillator is alternated in synchronism with the alternation of the IF local oscillator frequency.
    Type: Application
    Filed: December 22, 2004
    Publication date: July 19, 2007
    Applicant: Freescale Semiconductor, Inc.
    Inventors: Nadim Khlat, Conor O'Keefe, Patrick Pratt