Patents by Inventor Douglas H. Wood
Douglas H. Wood 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).
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Publication number: 20090284434Abstract: An antenna apparatus, which can increase capacity in a cellular communication system or Wireless Local Area Network (WLAN), such as an 802.11 network, operates in conjunction with a mobile subscriber unit or client station. At least one antenna element is active and located within multiple passive antenna elements. The passive antenna elements are coupled to selectable impedance components for phase control of re-radiated RF signals. Various techniques for determining the phase of each antenna element are supported to enable the antenna apparatus to direct an antenna beam pattern toward a base station or access point with maximum gain, and, consequently, maximum signal-to-noise ratio. By directionally receiving and transmitting signals, multipath fading is greatly reduced as well as intercell interference.Type: ApplicationFiled: May 5, 2009Publication date: November 19, 2009Applicant: IPR LICENSING, INC.Inventors: Griffin K. Gothard, Alton S. Keel, JR., Christopher A. Snyder, Bing Chiang, Joe T. Richeson, Douglas H. Wood, James A. Proctor, JR., Kenneth M. Gainey
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Patent number: 7528789Abstract: An antenna apparatus, which can increase capacity in a cellular communication system or Wireless Local Area Network (WLAN), such as an 802.11 network, operates in conjunction with a mobile subscriber unit or client station. At least one antenna element is active and located within multiple passive antenna elements. The passive antenna elements are coupled to selectable impedance components for phase control of re-radiated RF signals. Various techniques for determining the phase of each antenna element are supported to enable the antenna apparatus to direct an antenna beam pattern toward a base station or access point with maximum gain, and, consequently, maximum signal-to-noise ratio. By directionally receiving and transmitting signals, multipath fading is greatly reduced as well as intercell interference.Type: GrantFiled: May 8, 2007Date of Patent: May 5, 2009Assignee: IPR Licensing, Inc.Inventors: Griffin K. Gothard, Alton S. Keel, Jr., Christopher A. Snyder, Bing Chiang, Joe T. Richeson, Douglas H. Wood, James A. Proctor, Jr., Kenneth M. Gainey
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Patent number: 7403160Abstract: A low profile smart antenna includes an active antenna element carried by a dielectric substrate, and active antenna element has a T-shape. Passive antenna elements are carried by the dielectric substrate, and they have an inverted L-shaped portion laterally adjacent the active antenna element. Impedance elements are selectively connectable to the passive antenna elements for antenna beam steering.Type: GrantFiled: June 16, 2005Date of Patent: July 22, 2008Assignee: Interdigital Technology CorporationInventors: Bing A. Chiang, Michael J. Lynch, Douglas H. Wood, Thomas Liu, Govind R. Kadambi, Mark W. Kishler
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Patent number: 7268731Abstract: A folded monopole antenna that supports lower and upper frequency bands may be used in CDMA, WLAN, or other wireless communications systems. The folded monopole antenna may be located in a handset next to a vertical ground plane. The folded monopole antenna may be folded at least twice and connected to the ground plane through a reactance. The dimensions of different sections of the folded monopole antenna define lower and upper frequency band characteristics, and an offset location of an input feed affects the bandwidth of the frequency bands. The reactance between the antenna and ground plane can be selected to fine tune the frequency bands. Various input feeds, including a co-planar waveguide, may be employed. Dynamically adjustable reactances may be used in the input feed and ground line for adapting the antenna to various environments.Type: GrantFiled: July 20, 2004Date of Patent: September 11, 2007Assignee: IPR Licensing, Inc.Inventors: Bing Chiang, Michael J. Lynch, Douglas H. Wood
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Patent number: 7224321Abstract: A smart antenna includes a ground plane, an active antenna element adjacent the ground plane, and passive antenna elements adjacent the ground plane. The passive antenna elements have different sizes for defining different resonant frequencies for increasing a bandwidth of the smart antenna. Dielectric layers having different dielectric constants may also be used for coating the passive antenna elements for defining different resonant frequencies. Impedance elements are connected to the ground plane and are selectively connectable to the passive antenna elements for antenna beam steering.Type: GrantFiled: July 27, 2005Date of Patent: May 29, 2007Assignee: InterDigital Technology CorporationInventors: Bing A. Chiang, Michael J. Lynch, Dee M. Richeson, legal representative, Douglas H. Wood, Joseph T. Richeson, deceased
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Patent number: 7215297Abstract: An antenna apparatus, which can increase capacity in a cellular communication system or Wireless Local Area Network (WLAN), such as an 802.11 network, operates in conjunction with a mobile subscriber unit or client station. At least one antenna element is active and located within multiple passive antenna elements. The passive antenna elements are coupled to selectable impedance components for phase control of re-radiated RF signals. Various techniques for determining the phase of each antenna element are supported to enable the antenna apparatus to direct an antenna beam pattern toward a base station or access point with maximum gain, and, consequently, maximum signal-to-noise ratio. By directionally receiving and transmitting signals, multipath fading is greatly reduced as well as intercell interference.Type: GrantFiled: January 17, 2006Date of Patent: May 8, 2007Assignee: IPR Licensing, Inc.Inventors: Griffin K. Gothard, Alton S. Keel, Jr., Christopher A. Snyder, Bing Chiang, Joe T. Richeson, Douglas H. Wood, James A. Proctor, Jr., Kenneth M. Gainey
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Patent number: 6989797Abstract: An antenna apparatus, which can increase capacity in a cellular communication system or Wireless Local Area Network (WLAN), such as an 802.11 network, operates in conjunction with a mobile subscriber unit or client station. At least one antenna element is active and located within multiple passive antenna elements. The passive antenna elements are coupled to selectable impedance components for phase control of re-radiated RF signals. Various techniques for determining the phase of each antenna element are supported to enable the antenna apparatus to direct an antenna beam pattern toward a base station or access point with maximum gain, and, consequently, maximum signal-to-noise ratio. By directionally receiving and transmitting signals, multipath fading is greatly reduced as well as intercell interference.Type: GrantFiled: December 23, 2003Date of Patent: January 24, 2006Assignee: IPR Licensing, Inc.Inventors: Griffin K. Gothard, Alton S. Keel, Jr., Christopher A. Snyder, Bing Chiang, Joe T. Richeson, Douglas H. Wood, James A. Proctor, Jr., Kenneth M. Gainey
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Publication number: 20040259597Abstract: An antenna apparatus, which can increase capacity in a cellular communication system or Wireless Local Area Network (WLAN), such as an 802.11 network, operates in conjunction with a mobile subscriber unit or client station. At least one antenna element is active and located within multiple passive antenna elements. The passive antenna elements are coupled to selectable impedance components for phase control of re-radiated RF signals. Various techniques for determining the phase of each antenna element are supported to enable the antenna apparatus to direct an antenna beam pattern toward a base station or access point with maximum gain, and, consequently, maximum signal-to-noise ratio. By directionally receiving and transmitting signals, multipath fading is greatly reduced as well as intercell interference.Type: ApplicationFiled: December 23, 2003Publication date: December 23, 2004Inventors: Griffin K. Gothard, Alton S. Keel, Christopher A. Snyder, Bing Chiang, Joe T. Richeson, Douglas H. Wood, James A. Proctor, Kenneth M. Gainey
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Patent number: 6600456Abstract: An antenna apparatus which can increase capacity in a cellular communication system. The antenna operates in conjunction with a mobile subscriber unit and provides a plurality of antenna elements. At least one active antenna element is active and essentially centrally located within multiple passive antenna elements. The passive antenna elements are coupled to selectable impedance components. Through proper control of the passive antenna elements, the cellular communication system directs an antenna beam pattern toward an antenna tower of a base station to maximize gain, and, consequently, signal-to-noise ratio. Thus, optimum reception is achieved during, for example, an idle mode which receives a pilot signal. The antenna array creates a beamformer for signals to be transmitted from the mobile subscriber unit, and a directional receiving array to more optimally detect and receive signals transmitted from the base station.Type: GrantFiled: May 16, 2001Date of Patent: July 29, 2003Assignee: Tantivy Communications, Inc.Inventors: Griffin K. Gothard, Alton S. Keel, Jr., Christopher A. Snyder, Bing Chiang, Joe T. Richeson, Douglas H. Wood, James A. Proctor, Jr., Kenneth M. Gainey
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Publication number: 20020008672Abstract: An antenna apparatus which can increase capacity in a cellular communication system. The antenna operates in conjunction with a mobile subscriber unit and provides a plurality of antenna elements. At least one active antenna element is active and essentially centrally located within multiple passive antenna elements. The passive antenna elements are coupled to selectable impedance components. Through proper control of the passive antenna elements, the cellular communication system directs an antenna beam pattern toward an antenna tower of a base station to maximize gain, and, consequently, signal-to-noise ratio. Thus, optimum reception is achieved during, for example, an idle mode which receives a pilot signal. The antenna array creates a beamformer for signals to be transmitted from the mobile subscriber unit, and a directional receiving array to more optimally detect and receive signals transmitted from the base station.Type: ApplicationFiled: May 16, 2001Publication date: January 24, 2002Applicant: Tantivy Communications, Inc.Inventors: Griffin K. Gothard, Alton S. Keel, Christopher A. Snyder, Bing Chiang, Joe T. Richeson, Douglas H. Wood, James A. Proctor, Kenneth M. Gainey