Patents by Inventor David Edwin Barker

David Edwin Barker 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: 9438278
    Abstract: In one example, the present disclosure describes an antenna system with at least two linear antenna arrays, each having a plurality of antenna elements. Each array is designed to transmit and receive signals from different respective spectrum bands. The first antenna array and second antenna array are arranged to form one longer, combined linear array of antenna elements. In addition, at least one antenna element is shared between the first and second antenna arrays. In one example, the first antenna array is connected to a first RF distribution and phase-shifting network to distribute RF power and impart a phase profile across the first antenna array and the second antenna array is connected to a second RF distribution and phase-shifting network to distribute RF power and impart a phase profile across the second antenna array.
    Type: Grant
    Filed: February 21, 2014
    Date of Patent: September 6, 2016
    Assignee: Quintel Technology Limited
    Inventors: David Edwin Barker, Lance Darren Bamford, Peter Chun Teck Song, David Sam Piazza
  • Publication number: 20160248151
    Abstract: In one example, an antenna radome may have at least a first face that includes a plurality of surface features, where the plurality of surface features may include at least a first ridge and at least a first depression, and where the plurality of surface features may be oriented longitudinal along the antenna radome. In another example, an antenna radome may have at least a first face that includes a plurality of surface features, where the plurality of surface features may include at least a first ridge and at least a first depression, and where the plurality of surface features may be oriented transverse along the antenna radome.
    Type: Application
    Filed: February 22, 2016
    Publication date: August 25, 2016
    Inventors: Byron Dean Proshold, Ching-Shun Yang, Peter Chun Teck Song, David Edwin Barker
  • Patent number: 9344176
    Abstract: In one embodiment, the present disclosure provides a method and apparatus for spatially filtering inter-cell co-channel interference in the elevation plane, which in turn will improve network spectral efficiency.
    Type: Grant
    Filed: August 18, 2012
    Date of Patent: May 17, 2016
    Assignee: Quintel Technology Limited
    Inventors: David Edwin Barker, David Sam Piazza
  • Patent number: 9190715
    Abstract: A system and method for antenna radiation pattern sweeping in wireless networks, e.g., cellular networks, are disclosed. For example, the system comprises a first base station associated with a first antenna assembly for providing a first antenna radiation pattern over a first footprint of a first cell, a second base station associated with a second antenna assembly for providing a second antenna radiation pattern over a second footprint of a second cell, wherein there is an overlap between the first footprint and the second footprint, and a controller for controlling the first base station and the second base station to continuously provide a variation of the first antenna radiation pattern and the second antenna radiation pattern in a co-ordinated manner for maintaining the overlap between the first footprint and the second footprint.
    Type: Grant
    Filed: January 19, 2011
    Date of Patent: November 17, 2015
    Assignee: Quintel Technology Limited
    Inventors: David Edwin Barker, Keith Hal Radousky
  • Publication number: 20150263435
    Abstract: In one example, a device includes an antenna array having at least a first cross dipole antenna element having a first dipole and a second dipole orthogonal to the first dipole and at least a second cross dipole antenna element having a third dipole and a fourth dipole orthogonal to the third dipole. An orientation of the at least a second cross dipole antenna is offset 45 degrees with respect to the at least a first cross dipole antenna element. The at least a first cross dipole antenna element and the at least a second cross dipole antenna element are for transmitting and/or receiving signals at plus 45 degrees and minus 45 degrees slant polarizations.
    Type: Application
    Filed: March 16, 2015
    Publication date: September 17, 2015
    Inventors: PETER CHUN TECK SONG, David Edwin Barker
  • Patent number: 9118361
    Abstract: A phased array antenna system with multiple beams incorporates a CDMA base station (32) with multiple ports 341to 36N for positive and negative polarisation signals connected to ports 401 to 42N of an antenna assembly (44). The antenna assembly (44) is single stack and multi-port, and it provides multiple antenna beams with polarisation diversity and different vertical angles of electrical tilt which are fixed or variable. It is suitable for 3G mobile radio using CDMA. Different antenna beams may carry groups of data channels distinguished either by different channelisation process coding or by different scrambling process coding. An operator may use two or more beams simultaneously. Control of angle of electrical tilt of antenna beams may be implemented by introducing variable relative delay between signals associated with different antenna ports A(+) and B(+) and feeding them to a signal splitting and combining network providing antenna element signals.
    Type: Grant
    Filed: February 1, 2007
    Date of Patent: August 25, 2015
    Assignee: Quintel Technology Limited
    Inventors: David Edwin Barker, Philip Edward Haskell, Louis David Thomas
  • Publication number: 20150222025
    Abstract: In one example, the present disclosure provides a dual-polarized antenna array that includes at least one unit cell. The at least one unit cell includes at least one radiating element of a first polarization state and at least two radiating elements of a second polarization state. The second polarization state is orthogonal to the first polarization state. The at least two radiating elements of the second polarization state are displaced on a first side and a second side of the at least one radiating element of the first polarization state.
    Type: Application
    Filed: January 30, 2015
    Publication date: August 6, 2015
    Inventors: Peter Chun Teck Song, Lance Darren Bamford, David Sam Piazza, David Edwin Barker
  • Publication number: 20150195001
    Abstract: In one example, an antenna system includes a radio base station for transmitting an RF signal via a transmission port, an RF splitting means for receiving the RF signal from the radio base station and for splitting the RF signal into two component signals, and at least two antennas separated by a distance greater than one wavelength and connected to the RF splitting means for transmitting the respective component signals such that an inferometric radiation gain pattern is created. The radio base station communicates with at least one mobile terminal via a dispersive multi-path radio channel where an angular spread of RF energy between the at least two antennas and the at least one mobile terminal causes nulls of the inferometric radiation pattern across a range of angles to be reduced.
    Type: Application
    Filed: January 6, 2015
    Publication date: July 9, 2015
    Inventors: DAVID EDWIN BARKER, Lance Darren Bamford, Peter Chun Teck Song, Brent Irvine
  • Patent number: 8879997
    Abstract: Cross-polar discrimination (XPD) of a dual orthogonal cross-polarized antenna is maximized via a cross-coupling network between base station MIMO branches prior to connection to the base station antenna. In one embodiment, a cross coupling network combines each MIMO branch signal with an attenuated phase reversed (phase shifted) copy of the other MIMO branch signal. The amount of attenuation for each branch is equivalent to the cross polar suppression required for each antenna array. The cross-coupling can be applied at different stages of signal processing within a base station.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: November 4, 2014
    Assignee: Quintel Technology Limited
    Inventors: David Edwin Barker, David Sam Piazza, Stephen Thomas Newbold
  • Publication number: 20140242930
    Abstract: In one example, the present disclosure describes an antenna system with at least two linear antenna arrays, each having a plurality of antenna elements. Each array is designed to transmit and receive signals from different respective spectrum bands. The first antenna array and second antenna array are arranged to form one longer, combined linear array of antenna elements. In addition, at least one antenna element is shared between the first and second antenna arrays. In one example, the first antenna array is connected to a first RF distribution and phase-shifting network to distribute RF power and impart a phase profile across the first antenna array and the second antenna array is connected to a second RF distribution and phase-shifting network to distribute RF power and impart a phase profile across the second antenna array.
    Type: Application
    Filed: February 21, 2014
    Publication date: August 28, 2014
    Applicant: Quintel Technology Limited
    Inventors: David Edwin Barker, Lance Darren Bamford, Peter Chun Teck Song, David Sam Piazza
  • Publication number: 20130044650
    Abstract: In one embodiment, the present disclosure provides a method and apparatus for spatially filtering inter-cell co-channel interference in the elevation plane, which in turn will improve network spectral efficiency.
    Type: Application
    Filed: August 18, 2012
    Publication date: February 21, 2013
    Applicant: Quintel Technology Limited
    Inventors: David Edwin Barker, David Sam Piazza
  • Publication number: 20120244899
    Abstract: Cross-polar discrimination (XPD) of a dual orthogonal cross-polarised antenna is maximized via a cross-coupling network between base station MIMO branches prior to connection to the base station antenna. In one embodiment, a cross coupling network combines each MIMO branch signal with an attenuated phase reversed (phase shifted) copy of the other MIMO branch signal. The amount of attenuation for each branch is equivalent to the cross polar suppression required for each antenna array. The cross-coupling can be applied at different stages of signal processing within a base station.
    Type: Application
    Filed: March 23, 2012
    Publication date: September 27, 2012
    Inventors: David Edwin Barker, David Sam Piazza, Stephen Thomas Newbold
  • Patent number: 8269668
    Abstract: A diversity antenna system with electrical tilt has two dual polarized, tilt adjustable antenna stacks (44A) and (44B) with physical separation providing space diversity. Each antenna stack (44A) or (44B) has two polarizations associated with independently adjustable electrical tilt angles. The electrical tilt angles of each antenna stack (44A) or (44B) are controlled to be equal to those of the other antenna stack to provide co-polarization or anti-polarization tilt coupling. The antenna system (40) may operate with multiple carrier frequencies each associated with a respective pair of polarizations of different antenna stacks (44A) and (44B) with co-polarization or anti-polarization tilt coupling. Antenna tilt angles are controllable so that different carrier frequencies are associated with independently adjustable angles of electrical tilt. The system may be used with groups of both contiguous and non-contiguous carrier frequencies.
    Type: Grant
    Filed: August 10, 2007
    Date of Patent: September 18, 2012
    Assignee: Quintel Technology Limited
    Inventors: David Edwin Barker, Louis David Thomas, Stephen Thomas Newbold, Philip Edward Haskell
  • Patent number: 8185162
    Abstract: An electrically tilted antenna system with polarization diversity has a dual polarized, tilt adjustable antenna (32). The antenna (32) has dipoles (34, 36) of two orthogonal polarizations associated with independently adjustable electrical tilt angles. The tilt angles are implemented by relative delays between corporate feed input or output signals, the delays being introduced by an antenna tilt assembly (54). Two signal feeders (F21, F22) associated with different antenna polarizations connect the antenna tilt assembly (54) to a base station filter assembly (50): the base station filter assembly 50 routes transmit signals from base stations (BS21, BS22) to different antenna polarizations via respective feeders (F21, F22) and the antenna tilt assembly (54). This assembly also divides receive signals from feeders (F21, F22) between both base stations (BS21, BS22).
    Type: Grant
    Filed: November 7, 2007
    Date of Patent: May 22, 2012
    Assignee: Quintel Technology Limited
    Inventors: Philip Edward Haskell, Louis David Thomas, Stephen Thomas Newbold, David Edwin Barker
  • Publication number: 20110199992
    Abstract: A system and method for antenna radiation pattern sweeping in wireless networks, e.g., cellular networks, are disclosed. For example, the system comprises a first base station associated with a first antenna assembly for providing a first antenna radiation pattern over a first footprint of a first cell, a second base station associated with a second antenna assembly for providing a second antenna radiation pattern over a second footprint of a second cell, wherein there is an overlap between the first footprint and the second footprint, and a controller for controlling the first base station and the second base station to continuously provide a variation of the first antenna radiation pattern and the second antenna radiation pattern in a co-ordinated manner for maintaining the overlap between the first footprint and the second footprint.
    Type: Application
    Filed: January 19, 2011
    Publication date: August 18, 2011
    Inventors: DAVID EDWIN BARKER, Keith Hal Radousky
  • Publication number: 20100144289
    Abstract: An electrically tilted antenna system with polarisation diversity has a dual polarised, tilt adjustable antenna (32). The antenna (32) has dipoles (34, 36) of two orthogonal polarisations associated with independently adjustable electrical tilt angles. The tilt angles are implemented by relative delays between corporate feed input or output signals, the delays being introduced by an antenna tilt assembly (54). Two signal feeders (F21, F22) associated with different antenna polarisations connect the antenna tilt assembly (54) to a base station filter assembly (50): the base station filter assembly 50 routes transmit signals from base stations (BS21, BS22) to different antenna polarisations via respective feeders (F21, F22) and the antenna tilt assembly (54). This assembly also divides receive signals from feeders (F21, F22) between both base stations (BS21, BS22).
    Type: Application
    Filed: November 7, 2007
    Publication date: June 10, 2010
    Inventors: Philip Edward Haskell, Louis David Thomas, Stephen Thomas Newbold, David Edwin Barker
  • Publication number: 20090066595
    Abstract: A diversity antenna system with electrical tilt has two dual polarised, tilt adjustable antenna stacks (44A) and (44B) with physical separation providing space diversity. Each antenna stack (44A) or (44B) has two polarisations associated with independently adjustable electrical tilt angles. The electrical tilt angles of each antenna stack (44A) or (44B) are controlled to be equal to those of the other antenna stack to provide co-polarisation or anti-polarisation tilt coupling. The antenna system (40) may operate with multiple carrier frequencies each associated with a respective pair of polarisations of different antenna stacks (44A) and (44B) with co-polarisation or anti-polarisation tilt coupling. Antenna tilt angles are controllable so that different carrier frequencies are associated with independently adjustable angles of electrical tilt. The system may be used with groups of both contiguous and non-contiguous carrier frequencies.
    Type: Application
    Filed: August 10, 2007
    Publication date: March 12, 2009
    Inventors: David Edwin Barker, Louis David Thomas, Stephen Thomas Newbold, Philip Edward Haskell
  • Publication number: 20090058725
    Abstract: A phased array antenna system with multiple beams incorporates a CDMA base station (32) with multiple ports 341 to 36N for positive and negative polarisation signals connected to ports 401 to 42N of an antenna assembly (44). The antenna assembly (44) is single stack and multi-port, and it provides multiple antenna beams with polarisation diversity and different vertical angles of electrical tilt which are fixed or variable. It is suitable for 3G mobile radio using CDMA. Different antenna beams may carry groups of data channels distinguished either by different channelisation process coding or by different scrambling process coding. An operator may use two or more beams simultaneously. Control of angle of electrical tilt of antenna beams may be implemented by introducing variable relative delay between signals associated with different antenna ports A(+) and B(+) and feeding them to a signal splitting and combining network providing antenna element signals.
    Type: Application
    Filed: February 1, 2007
    Publication date: March 5, 2009
    Inventors: David Edwin Barker, Philip Edward Haskell, Louis David Thomas