Surface Wave Patents (Class 333/240)
  • Patent number: 10355481
    Abstract: Disclosed are various receive circuits by which to receive a plurality of guided surface waves transmitted by a plurality of guided surface waveguide probes over a surface of a terrestrial medium according to various embodiments.
    Type: Grant
    Filed: November 5, 2018
    Date of Patent: July 16, 2019
    Assignee: CPG Technologies, LLC
    Inventors: James F. Corum, Kenneth L. Corum, Joseph F. Pinzone, James D. Lilly
  • Patent number: 10340573
    Abstract: Aspects of the subject disclosure may include, for example, a launching device including a transmitter configured to generate a radio frequency signal on a transmission medium, wherein the transmitter is included in a launching circuit with the transmission medium having an electrical return path. A cylindrical coupler launches the radio frequency signal from an aperture of the cylindrical coupler as a guided electromagnetic wave that is bound to an outer surface of the transmission medium, wherein the guided electromagnetic wave propagates along the outer surface of the transmission medium without an electrical return path. Other embodiments are disclosed.
    Type: Grant
    Filed: October 26, 2016
    Date of Patent: July 2, 2019
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: Shikik Johnson, Farhad Barzegar, Robert Bennett
  • Patent number: 10340600
    Abstract: Aspects of the subject disclosure may include, for example, a system having a first plurality of transmitters for launching according to a signal, first electromagnetic waves, and a second plurality of transmitters for launching, according to the signal, second electromagnetic waves. The first electromagnetic waves and the second electromagnetic waves combine at an interface of a transmission medium to induce a propagation of a third electromagnetic wave, the third electromagnetic wave having a non-fundamental wave mode and a non-optical operating frequency, and wherein the second plurality of transmitters are spaced apart from the first plurality of transmitters in a direction of propagation of the third electromagnetic wave. Other embodiments are disclosed.
    Type: Grant
    Filed: October 18, 2016
    Date of Patent: July 2, 2019
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: Paul Shala Henry, Robert Bennett, Farhad Barzegar, Irwin Gerszberg, Donald J. Barnickel, Thomas M. Willis, III
  • Patent number: 10320045
    Abstract: Disclosed are various embodiments for superposition of guided surface wave launched along the surface of a lossy medium. In one example, Zenneck surface waves are launched along a surface of a lossy conducting medium using an array of guided surface waveguide probes and a predefined field pattern of the Zenneck surface waves is maintained. The individual ones of the guided surface waveguide probes include a feed network electrically coupled to a charge terminal. The feed network provides a phase delay that matches a wave tilt angle associated with a complex Brewster angle of incidence associated with the lossy conducting medium.
    Type: Grant
    Filed: January 24, 2018
    Date of Patent: June 11, 2019
    Assignee: CPG TECHNOLOGIES, LLC
    Inventors: James F. Corum, Kenneth L. Corum
  • Patent number: 10242767
    Abstract: The present invention relates to an improved insulated conductor with a low dielectric constant and reduced materials costs. The conductor (12) extends along a longitudinal axis and an insulation (14, 14<1>) surrounds the conductor (12). At least on channel (16, 16<1>) in the insulation (14, 14<1>) extends generally along the longitudinal axis to form an insulated conductor. Apparatuses and methods of manufacturing the improved insulated conductors are also disclosed.
    Type: Grant
    Filed: May 6, 2016
    Date of Patent: March 26, 2019
    Assignee: CommScope Technologies LLC
    Inventors: David Wiekhorst, Spring Stutzman, Jeff Stutzman, Scott Avery Juengst, Frederick W. Johnston, Jim L. Dickman, Robert Kenny
  • Patent number: 10230145
    Abstract: Aspects of the subject disclosure may include, for example, a system that performs operations including detecting a signal degradation of guided electromagnetic waves bound to a transmission medium without utilizing an electrical return path, the guided electromagnetic waves having a non-optical frequency range, and adjusting an alignment of at least a portion of fields of the guided electromagnetic waves to mitigate the signal degradation. Other embodiments are disclosed.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: March 12, 2019
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Paul Shala Henry, Robert Bennett, Farhad Barzegar, Irwin Gerszberg, Donald J. Barnickel, Thomas M. Willis, III
  • Patent number: 10224595
    Abstract: Aspects of the subject disclosure may include, for example, an antenna including a dielectric antenna and a mounting carriage connectable with a mounting bracket. Wireless signals can be transmitted by electromagnetic waves that propagate without requiring an electrical return path, where the electromagnetic waves are guided by a dielectric core of a cable coupled to a feed point of the dielectric antenna. The mounting bracket is connectable with a cross member of a utility pole, where the mounting carriage includes an opening for receiving an antenna mount, and where, when received in the mounting carriage, the antenna is suspended beyond distal ends of the cross member. Other embodiments are disclosed.
    Type: Grant
    Filed: September 12, 2018
    Date of Patent: March 5, 2019
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: David M. Britz, Donald J. Barnickel, Irwin Gerszberg
  • Patent number: 10177571
    Abstract: Disclosed are various receive circuits by which to receive a plurality of guided surface waves transmitted by a plurality of guided surface waveguide probes over a surface of a terrestrial medium according to various embodiments.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: January 8, 2019
    Assignee: CPG TECHNOLOGIES, LLC
    Inventors: James F. Corum, Kenneth L. Corum, Joseph F. Pinzone, James D. Lilly
  • Patent number: 10135147
    Abstract: Aspects of the subject disclosure may include, for example, a system having an antenna for launching, according to a signal, a first electromagnetic wave to induce a propagation of a second electromagnetic wave along a transmission medium, the second electromagnetic wave having a non-fundamental wave mode and a non-optical operating frequency. A reflective plate is spaced a distance behind the antenna relative to a direction of the propagation of the second electromagnetic wave. Other embodiments are disclosed.
    Type: Grant
    Filed: October 18, 2016
    Date of Patent: November 20, 2018
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: Paul Shala Henry, Robert Bennett, Farhad Barzegar, Irwin Gerszberg, Donald J. Barnickel, Thomas M. Willis, III
  • Patent number: 10135146
    Abstract: Aspects of the subject disclosure may include, for example, a system having a plurality of transmitters for launching, according to a signal, instances of first electromagnetic waves having different phases to induce propagation of a second electromagnetic wave at an interface of a transmission medium, the second electromagnetic wave having a non-fundamental wave mode and a non-optical operating frequency, wherein the plurality of transmitters has a corresponding plurality of antennas. A reflective plate is spaced a distance behind the plurality of antennas relative to a direction of the propagation of the second electromagnetic wave. Other embodiments are disclosed.
    Type: Grant
    Filed: October 18, 2016
    Date of Patent: November 20, 2018
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: Paul Shala Henry, Robert Bennett, Farhad Barzegar, Irwin Gerszberg, Donald J. Barnickel, Thomas M. Willis, III
  • Patent number: 10135145
    Abstract: Aspects of the subject disclosure may include, generating, by a plurality of dielectric antennas of a waveguide system, a plurality of instances of electromagnetic waves that combines to form a combined electromagnetic wave, and directing, by the waveguide system, the combined electromagnetic wave to an interface of a transmission medium for guiding propagation of the combined electromagnetic wave along the transmission medium without requiring an electrical return path. Other embodiments are disclosed.
    Type: Grant
    Filed: December 6, 2016
    Date of Patent: November 20, 2018
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: Paul Shala Henry, Shikik Johnson, Robert Bennett, Farhad Barzegar, Irwin Gerszberg, Thomas M. Willis, III, Donald J. Barnickel
  • Patent number: 10103422
    Abstract: Aspects of the subject disclosure may include, for example, an antenna including a dielectric antenna and a mounting carriage connectable with a mounting bracket. Wireless signals can be transmitted by electromagnetic waves that propagate without requiring an electrical return path, where the electromagnetic waves are guided by a dielectric core of a cable coupled to a feed point of the dielectric antenna. The mounting bracket is connectable with a cross member of a utility pole, where the mounting carriage includes an opening for receiving an antenna mount, and where, when received in the mounting carriage, the antenna is suspended beyond distal ends of the cross member. Other embodiments are disclosed.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: October 16, 2018
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: David M. Britz, Donald J. Barnickel, Irwin Gerszberg
  • Patent number: 10090601
    Abstract: Aspects of the subject disclosure may include, for example, a system for generating first electromagnetic waves and directing instances of the first electromagnetic waves to an interface of a transmission medium to induce propagation of second electromagnetic waves substantially having a non-fundamental wave mode. Other embodiments are disclosed.
    Type: Grant
    Filed: June 8, 2016
    Date of Patent: October 2, 2018
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Paul Shala Henry, Robert Bennett, Farhad Barzegar, Irwin Gerszberg, Donald J Barnickel, Thomas M. Willis, III, Ed Guntin
  • Patent number: 10027427
    Abstract: Aspects of the subject disclosure may include, a system that obtains a group of signals that are each representative of a corresponding one of a group of electromagnetic waves, analyzes the group of signals to determine signal characteristics, and determines, according to the signal characteristics, predicted characteristics for a communication signal that is to be transmitted by a circuit. Other embodiments are disclosed.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: July 17, 2018
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Giovanni Vannucci, Peter Wolniansky, Paul Shala Henry, Robert Bennett, Farhad Barzegar, Irwin Gerszberg, Donald J. Barnickel, Thomas M. Willis, III
  • Patent number: 9924880
    Abstract: A method implemented by a device to measure a bodily parameter includes transmitting, by a transmit (Tx) antenna of an antenna pair, a first radar pulse to a receive (Rx) antenna of the antenna pair. The method also includes receiving, by the receive (Rx) antenna, the first radar pulse. The first radar pulse travels through a radar target between the Tx antenna and the Rx antenna. The method further includes transmitting, by the Tx antenna, a second radar pulse to the Rx antenna. In addition the method includes receiving, by the Rx antenna, the second radar pulse, wherein the second radar pulse travels through the radar target between the Tx antenna and the Rx antenna. The method also includes determining a bodily parameter within the radar target as a function of the transmission and the reception of the first radar pulse and the second radar pulse.
    Type: Grant
    Filed: January 5, 2016
    Date of Patent: March 27, 2018
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Insoo Kim, Daquan Huang, Jungsuek Oh, Yusuf A. Bhagat, Sean D. Lai, Johnny T. Homer
  • Patent number: 9912436
    Abstract: Aspects of the subject disclosure may include, for example, a transmission device that includes at least one transceiver configured to modulate data to generate a plurality of first electromagnetic waves. A plurality of couplers are configured to couple at least a portion of the plurality of first electromagnetic waves to a transmission medium, wherein the plurality of couplers generate a plurality of mode division multiplexed second electromagnetic waves that propagate along the outer surface of the transmission medium. Other embodiments are disclosed.
    Type: Grant
    Filed: July 19, 2017
    Date of Patent: March 6, 2018
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: Paul Shala Henry, Robert Bennett, Irwin Gerszberg, Farhad Barzegar, Donald J. Barnickel, Thomas M. Willis, III
  • Patent number: 9900122
    Abstract: Aspects of the subject disclosure may include, for example, a transmission device that includes at least one transceiver configured to modulate data to generate a plurality of first electromagnetic waves. A plurality of couplers are configured to couple at least a portion of the plurality of first electromagnetic waves to a transmission medium, wherein the plurality of couplers generate a plurality of mode division multiplexed second electromagnetic waves that propagate along the outer surface of the transmission medium. Other embodiments are disclosed.
    Type: Grant
    Filed: July 18, 2017
    Date of Patent: February 20, 2018
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: Paul Shala Henry, Robert Bennett, Irwin Gerszberg, Farhad Barzegar, Donald J. Barnickel, Thomas M. Willis, III
  • Patent number: 9900123
    Abstract: Aspects of the subject disclosure may include, for example, a transmission device that includes at least one transceiver configured to modulate data to generate a plurality of first electromagnetic waves. A plurality of couplers are configured to couple at least a portion of the plurality of first electromagnetic waves to a transmission medium, wherein the plurality of couplers generate a plurality of mode division multiplexed second electromagnetic waves that propagate along the outer surface of the transmission medium. Other embodiments are disclosed.
    Type: Grant
    Filed: July 19, 2017
    Date of Patent: February 20, 2018
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: Paul Shala Henry, Robert Bennett, Irwin Gerszberg, Farhad Barzegar, Donald J. Barnickel, Thomas M. Willis, III
  • Patent number: 9871282
    Abstract: Aspects of the subject disclosure may include, for example, a transmission medium for propagating electromagnetic waves. The transmission medium can have a first dielectric material for propagating electromagnetic waves guided by the first dielectric material, and a second dielectric material disposed on at least a portion of an outer surface of the first dielectric material for reducing an exposure of the electromagnetic waves to an environment that adversely affects propagation of the electromagnetic waves on the first dielectric material. Other embodiments are disclosed.
    Type: Grant
    Filed: May 14, 2015
    Date of Patent: January 16, 2018
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: Paul Shala Henry, Robert Bennett, Farhad Barzegar, Irwin Gerszberg, Donald J Barnickel, Thomas M. Willis, III
  • Patent number: 9859707
    Abstract: Disclosed are various receive circuits by which to receive a plurality of guided surface waves transmitted by a plurality of guided surface waveguide probes over a surface of a terrestrial medium according to various embodiments.
    Type: Grant
    Filed: September 9, 2015
    Date of Patent: January 2, 2018
    Assignee: CPG Technologies, LLC
    Inventors: James F. Corum, Kenneth L. Corum, Joseph F. Pinzone, James D. Lilly
  • Patent number: 9831912
    Abstract: Aspects of the subject disclosure may include, for example, a coupling device including a first antenna that radiates a first RF signal conveying first data; and a second antenna that radiates a second RF signal conveying the first data from the at least one transmitting device. The first RF signal and second RF signal form a combined RF signal that is bound by an outer surface of a transmission medium to propagate as a guided electromagnetic wave substantially in a single longitudinal direction along the transmission medium. Other embodiments are disclosed.
    Type: Grant
    Filed: March 15, 2016
    Date of Patent: November 28, 2017
    Assignee: AT&T INTELLECTUAL PROPERTY I, LP
    Inventors: Paul Shala Henry, Robert Bennett, Irwin Gerszberg, Farhad Barzegar, Donald J Barnickel, Thomas M. Willis, III
  • Patent number: 9748626
    Abstract: Aspects of the subject disclosure may include, for example, a transmission medium for propagating electromagnetic waves. The transmission medium can include a plurality of cores for selectively guiding an electromagnetic wave of a plurality of electromagnetic waves longitudinally along each core, and a shell surrounding at least a portion of each core for reducing exposure of the electromagnetic wave of each core. Other embodiments are disclosed.
    Type: Grant
    Filed: May 14, 2015
    Date of Patent: August 29, 2017
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Paul Shala Henry, William Scott Taylor, Robert Bennett, Farhad Barzegar, Irwin Gerszberg, Donald J. Barnickel, Thomas M. Willis, III
  • Patent number: 9531427
    Abstract: Aspects of the subject disclosure may include, for example, a transmission device that includes at least one transceiver configured to modulate data to generate a plurality of first electromagnetic waves. A plurality of couplers are configured to couple at least a portion of the plurality of first electromagnetic waves to a transmission medium, wherein the plurality of couplers generate a plurality of mode division multiplexed second electromagnetic waves that propagate along the outer surface of the transmission medium. Other embodiments are disclosed.
    Type: Grant
    Filed: March 15, 2016
    Date of Patent: December 27, 2016
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Paul Shala Henry, Robert Bennett, Irwin Gerszberg, Farhad Barzegar, Donald J Barnickel, Thomas M. Willis, III
  • Patent number: 9472840
    Abstract: A dielectric waveguide (DWG) has a dielectric core member that has a length L and an oblong cross section. The core member has a first dielectric constant value. A dielectric cladding surrounds the dielectric core member; the cladding has a second dielectric constant value that is lower than the first dielectric constant. A conductive shield layer surrounds a portion of the dielectric cladding.
    Type: Grant
    Filed: May 22, 2014
    Date of Patent: October 18, 2016
    Assignee: Texas Instruments Incorporated
    Inventors: Juan Alejandro Herbsommer, Baher Haroun
  • Patent number: 9209902
    Abstract: A quasi-optical coupling system launches and extracts surface wave communication transmissions from a wire. At millimeter-wave frequencies, where the wavelength is small compared to the macroscopic size of the equipment, the millimeter-wave transmissions can be transported from one place to another and diverted via lenses and reflectors, much like visible light. Transmitters and receivers can be positioned near telephone and power lines and reflectors placed on or near the cables can reflect transmissions onto or off of the cables. The lenses on the transmitters are focused, and the reflectors positioned such that the reflected transmissions are guided waves on the surface of the cables. The reflectors can be polarization sensitive, where one or more of a set of guided wave modes can be reflected off the wire based on the polarization of the guided wave modes and polarization and orientation of the reflector.
    Type: Grant
    Filed: December 10, 2013
    Date of Patent: December 8, 2015
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: Paul Shala Henry, Donald J. Barnickel, Farhad Barzegar, Robert Bennett, Irwin Gerszberg, Thomas M. Willis, III
  • Patent number: 9117572
    Abstract: A foamed axial cable includes a pair of signal conductors, an insulation covering a periphery of the signal conductor and formed of a foamed material, a skin layer covering a periphery of the insulation and formed of a non-foamed material, and a shield conductor on a periphery of the skin layer. An outer surface of the skin layer or an inner surface of the shield conductor includes a fine groove formed thereon so as to have a void between the skin layer and the shield conductor.
    Type: Grant
    Filed: September 13, 2013
    Date of Patent: August 25, 2015
    Assignee: Hitachi Metals, LTD.
    Inventor: Izumi Fukasaku
  • Publication number: 20150008996
    Abstract: A surface wave launcher for launching electromagnetic surface waves, the launcher comprising: a waveguide having a feed end and a launch end; a feed structure coupled to the feed end of the waveguide; wherein the feed structure includes a first conductor; the waveguide comprises a first planar conductive layer having a feed end and a launch end, the feed end being coupled to the first conductor; and the waveguide is arranged to be positioned adjacent a surface suitable for guiding electromagnetic surface waves, wherein the width of the first planar conductive layer tapers from the launch end towards the feed end.
    Type: Application
    Filed: July 2, 2014
    Publication date: January 8, 2015
    Inventors: Michael Jessup, Janice Turner
  • Publication number: 20150008995
    Abstract: A guiding medium for guiding radio frequency (RF) electromagnetic surface waves, comprising: a first surface, the first surface having an electrical impedance suitable for the propagation of electromagnetic surface waves; and a protection layer positioned on or adjacent the first surface.
    Type: Application
    Filed: July 2, 2014
    Publication date: January 8, 2015
    Inventors: Michael Jessup, Janice Turner
  • Patent number: 8593238
    Abstract: The RF signal generated by a ZigBee radio on the outside of a building structure is conveyed to the interior of the building by guiding it along an electric cable bundle that passes through the building's wall to supply domestic electric power to the interior of the structure. The RF signal is launched by a unique coupler comprising a pair of insulated foil conductors.
    Type: Grant
    Filed: November 20, 2012
    Date of Patent: November 26, 2013
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Robert R. Miller, II, Harry R. Worstell
  • Patent number: 8537053
    Abstract: This left-handed substance comprises an array of conductive wires positioned relative to one another in such a way as to present a negative permittivity relative to the electromagnetic waves which have an electrical field parallel to the biggest dimension of these wires and are propagated at a frequency below the electrical plasma frequency of the substance, each wire being made out of a conductive magnetic material having negative permeability for a range of frequencies of the electromagnetic waves below the electrical plasma frequency of the substance and when there is no external artificial static magnetic field. Each wire comprises at least one strip, made out of a conductive magnetic material that extends along the greatest dimension of the wire in a plane of the strip and has a thickness at least twice as small as the skin thickness of the conductive magnetic material.
    Type: Grant
    Filed: July 19, 2010
    Date of Patent: September 17, 2013
    Assignees: Commissariat a l'Energie Atomique et aux Energies Alternatives, Centre National de la Recherche
    Inventors: Bernard Viala, Evangeline Benevent, Kevin Garello
  • Patent number: 8497749
    Abstract: A low attenuation surface wave transmission line system for launching surface waves on a bare and unconditioned conductor, such as are found in abundance in the power transmission lines of the existing power grids. The conductors within the power grid typically lack dielectric and special conditioning. Accordingly, the present invention includes a first launcher, preferably including a mode converter and an adapter, for receiving an incident wave of electromagnetic energy and propagating a surface wave longitudinally on the power lines. The system includes at least one other launcher, and more likely a number of other launchers, spaced apart from one another along the constellation of transmission lines. The system and associated electric fields along any given conductor are radially and longitudinally symmetrical.
    Type: Grant
    Filed: July 27, 2009
    Date of Patent: July 30, 2013
    Assignee: Corridor Systems, Inc.
    Inventor: Glenn E. Elmore
  • Patent number: 8449826
    Abstract: Since known detection devices include detectors of the same number as that of samples, the system configuration is complicated. According to the present invention, therefore, a plurality of electromagnetic-wave-transmission lines with different propagation-delay times and a coupled-transmission line coupling the electromagnetic-wave-transmission lines with each other are provided, and an electromagnetic wave is detected by the same electromagnetic-wave-detection unit. Subsequently, a detection device including at least one electromagnetic-wave detector of a number smaller than that of samples can be provided, which decreases the system complexity.
    Type: Grant
    Filed: December 12, 2007
    Date of Patent: May 28, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventor: Ryoji Kurosaka
  • Patent number: 8411601
    Abstract: Disclosed herein is an electromagnetic wave circuit disruptor apparatus including: a biasable non-reciprocal device having terminals for receiving and transmitting the electromagnetic signals, a controllable biaser, a signal detector, and a controller connected to the signal detector and the controllable biaser to selectively reverse the bias of the controllable biaser. The energy level at the receiver terminal of the non-reciprocal device is monitored to detect a condition such as an inappropriate amount of power at a circuit, such as at a receiver circuit. When a failure mode is detected the bias of the controllable biaser is reversed, thus reversing the direction of the non-reciprocal device. Instead of flowing into the circuit, energy flows into a properly matched load on a provided terminal of the non-reciprocal device and is dissipated.
    Type: Grant
    Filed: January 26, 2011
    Date of Patent: April 2, 2013
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventor: Russell Clifford Smiley
  • Publication number: 20130076460
    Abstract: The RF signal generated by a ZigBee radio on the outside of a building structure is conveyed to the interior of the building by guiding it along an electric cable bundle that passes through the building's wall to supply domestic electric power to the interior of the structure. The RF signal is launched by a unique coupler comprising a pair of insulated foil conductors.
    Type: Application
    Filed: November 20, 2012
    Publication date: March 28, 2013
    Applicant: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventor: AT&T Intellectual Property I, L.P.
  • Patent number: 8344829
    Abstract: The RF signal generated by a ZigBee radio on the outside of a building structure is conveyed to the interior of the building by guiding it along an electric cable bundle that passes through the building's wall to supply domestic electric power to the interior of the structure. The RF signal is launched by a unique coupler comprising a pair of insulated foil conductors.
    Type: Grant
    Filed: December 8, 2009
    Date of Patent: January 1, 2013
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Robert R. Miller, II, Harry R. Worstell
  • Publication number: 20120296589
    Abstract: Provided are a waveguide capable of suppressing strain and defect caused in a semiconductor in an initial stage or during operation due to a manufacturing process or the like to realize improvement and stabilization of characteristics such as oscillation characteristics, and a method of manufacturing the waveguide. A waveguide includes a first conductor layer and a second conductor layer that are composed of a negative dielectric constant medium having a negative real part of dielectric constant with respect to an electromagnetic wave in a waveguide mode, and a core layer that is in contact with and placed between the first conductor layer and the second conductor layer, and includes a semiconductor portion. At least the first conductor layer has a particular depressed and projected structure extending in an in-plane direction.
    Type: Application
    Filed: April 26, 2012
    Publication date: November 22, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Yasushi Koyama
  • Patent number: 8269583
    Abstract: The RF signal generated by a ZigBee radio on the outside of a building structure is conveyed to the interior of the building by guiding it along an electric cable bundle that passes through the building's wall to supply domestic electric power to the interior of the structure. The RF signal is launched by a unique coupler comprising a pair of insulated foil conductors.
    Type: Grant
    Filed: December 8, 2009
    Date of Patent: September 18, 2012
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Robert R. Miller, II, Harry R. Worstell
  • Patent number: 8253516
    Abstract: The RF signal generated by a ZigBee radio on the outside of a building structure is conveyed to the interior of the building by guiding it as a surface wave along an electric cable bundle that passes through the building's wall to supply domestic electric power to the interior of the structure. The RF signal is launched by a unique coupler comprising a pair of insulated foil conductors.
    Type: Grant
    Filed: December 8, 2009
    Date of Patent: August 28, 2012
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Robert R. Miller, II, Harry R. Worstell
  • Patent number: 8212635
    Abstract: The RF signal generated by a ZigBee radio on the outside of a building structure is conveyed to the interior of the building by guiding it along an electric cable bundle that passes through the building's wall to supply domestic electric power to the interior of the structure. The RF signal is launched by a unique coupler comprising a pair of insulated foil conductors.
    Type: Grant
    Filed: December 8, 2009
    Date of Patent: July 3, 2012
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Robert R. Miller, II, Harry R. Worstell
  • Publication number: 20110181375
    Abstract: A waveguide comprising a SF_WG portion between a first transmission line and a second transmission line, wherein the SF_WG portion has a width greater than or equal to 75 um.
    Type: Application
    Filed: December 23, 2010
    Publication date: July 28, 2011
    Applicant: SONY CORPORATION
    Inventors: Yugang Ma, Yaqiong Zhang, Xiaobing Sun
  • Publication number: 20110133867
    Abstract: The RF signal generated by a ZigBee radio on the outside of a building structure is conveyed to the interior of the building by guiding it along an electric cable bundle that passes through the building's wall to supply domestic electric power to the interior of the structure. The RF signal is launched by a unique coupler comprising a pair of insulated foil conductors.
    Type: Application
    Filed: December 8, 2009
    Publication date: June 9, 2011
    Inventors: Robert R. Miller, II, Harry R. Worstell
  • Publication number: 20110133865
    Abstract: The RF signal generated by a ZigBee radio on the outside of a building structure is conveyed to the interior of the building by guiding it along an electric cable bundle that passes through the building's wall to supply domestic electric power to the interior of the structure. The RF signal is launched by a unique coupler comprising a pair of insulated foil conductors.
    Type: Application
    Filed: December 8, 2009
    Publication date: June 9, 2011
    Inventors: Robert R. Miller, II, Harry R. Worstell
  • Publication number: 20110012791
    Abstract: This left-handed substance comprises an array of conductive wires positioned relative to one another in such a way as to present a negative permittivity relative to the electromagnetic waves which have an electrical field parallel to the biggest dimension of these wires and are propagated at a frequency below the electrical plasma frequency of the substance, each wire being made out of a conductive magnetic material having negative permeability for a range of frequencies of the electromagnetic waves below the electrical plasma frequency of the substance and when there is no external artificial static magnetic field. Each wire comprises at least one strip, made out of a conductive magnetic material that extends along the greatest dimension of the wire in a plane of the strip and has a thickness at least twice as small as the skin thickness of the conductive magnetic material.
    Type: Application
    Filed: July 19, 2010
    Publication date: January 20, 2011
    Applicants: Commissariat a l'energie atomique et aux energies alternatives, Centre National De La Researche Scientifique
    Inventors: Bernard Viala, Evangeline Benevent, Kevin Garello
  • Patent number: 7612638
    Abstract: A waveguide in semiconductor integrated circuit is disclosed, the waveguide comprises a horizontal first metal plate, a horizontal second metal plate above the first metal plate, separated by an insulation material, and a plurality of metal vias positioned in two parallel lines, running vertically through the insulation material in contacts with both the first and second metal plates, wherein the first and second metal plates and the plurality of metal vias form a metal enclosure in a cross-sectional view that can serve as a waveguide.
    Type: Grant
    Filed: July 14, 2006
    Date of Patent: November 3, 2009
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Shine Chung, Fu-Lung Hsueh
  • Patent number: 7567154
    Abstract: A low attenuation surface wave transmission line system for launching surface waves on a bare and unconditioned conductor, such as are found in abundance in the power transmission lines of the existing power grids. The conductors within the power grid typically lack dielectric and special conditioning. Accordingly, the present invention includes a first launcher, preferably including a mode converter and an adapter, for receiving an incident wave of electromagnetic energy and propagating a surface wave longitudinally on the power lines. The system includes at least one other launcher, and more likely a number of other launchers, spaced apart from one another along the constellation of transmission lines. The system and associated electric fields along any given conductor are radially and longitudinally symmetrical.
    Type: Grant
    Filed: May 19, 2008
    Date of Patent: July 28, 2009
    Assignee: Corridor Systems, Inc.
    Inventor: Glenn E. Elmore
  • Publication number: 20080211727
    Abstract: A low attenuation surface wave transmission line system for launching surface waves on a bare and unconditioned conductor, such as are found in abundance in the power transmission lines of the existing power grids. The conductors within the power grid typically lack dielectric and special conditioning. Accordingly, the present invention includes a first launcher, preferably including a mode converter and an adapter, for receiving an incident wave of electromagnetic energy and propagating a surface wave longitudinally on the power lines. The system includes at least one other launcher, and more likely a number of other launchers, spaced apart from one another along the constellation of transmission lines. The system and associated electric fields along any given conductor are radially and longitudinally symmetrical.
    Type: Application
    Filed: May 19, 2008
    Publication date: September 4, 2008
    Applicant: CORRIDOR SYSTEMS, INC.
    Inventor: Glenn E. Elmore
  • Patent number: 7009471
    Abstract: An apparatus for launching a surfacewave onto a single conductor transmission line provides a launch including a flared, continuously curving cone portion; a coaxial adapter portion; a wire adapter portion for contacting the wire conductor which allows for a multiplicity of wire dimensions for either insulated or uninsulated wire, or a tri-axial wire adapter device enabling non-contacting coupling to a wire; and a longitudinal slot added to the flared cone, wire adapter, and coaxial adapter portions of the launch to allow direct placement of the launch onto existing lines, without requiring cutting or threading of those lines for installation.
    Type: Grant
    Filed: December 9, 2003
    Date of Patent: March 7, 2006
    Assignee: Corridor Systems, Inc.
    Inventor: Glenn E. Elmore
  • Publication number: 20040169572
    Abstract: An apparatus for launching a surfacewave onto a single conductor transmission line provides a launch including a flared, continuously curving cone portion; a coaxial adapter portion; a wire adapter portion for contacting the wire conductor which allows for a multiplicity of wire dimensions for either insulated or uninsulated wire, or a tri-axial wire adapter device enabling non-contacting coupling to a wire; and a longitudinal slot added to the flared cone, wire adapter, and coaxial adapter portions of the launch to allow direct placement of the launch onto existing lines, without requiring cutting or threading of those lines for installation.
    Type: Application
    Filed: December 9, 2003
    Publication date: September 2, 2004
    Inventor: Glenn E. Elmore
  • Patent number: 6452467
    Abstract: A single-wire time-domain reflectometer (TDR) combines the best performance features of prior art “electronic dipsticks” in a high accuracy implementation that allows tank penetration though a small opening. A wire-horn structure is employed to launch TDR pulses onto a single wire transmission line, wherein the horn wires can be flexed inwards so the dipstick structure can be inserted through a small tank opening. Once inside the tank, the horn wires flex to their normal state to provide a controlled reference reflection while simultaneously providing high coupling efficiency to the dipstick. The TDR system determines the fill-level of a tank by measuring the time difference between a reflection created at the wire-horn, which all is at the top of a tank, and a reflection from a material in the tank. The TDR employs automatic time-of-peak (TOP) detectors and incorporates a 2-diode sampler, a low-aberration pulse generator, and a 0.001% accurate timebase.
    Type: Grant
    Filed: April 1, 1999
    Date of Patent: September 17, 2002
    Assignee: McEwan Technologies, LLC
    Inventor: Thomas E. McEwan
  • Patent number: 6384700
    Abstract: A towed antenna system employs drop-type dispensing for rapid deployment of a towed element on the end of a cable. The cable has an elastic central conductor, preferably of stranded stainless steel, which stretches to absorb the high tension of the towed element on the cable at the end of payout. The other end of the cable is anchored by a mounting portion in the launcher. A signal is fed from a coaxial signal conductor to the central conductor of the cable by a right-angle feed to a conductive sleeve on the central conductor, in order to avoid placing stress from the cable on the coaxial signal conductor.
    Type: Grant
    Filed: July 13, 1989
    Date of Patent: May 7, 2002
    Assignee: ITT Manufacturing Enterprises, Inc.
    Inventors: Richard W. Craine, Robert C. Ullrich, Wolodymyr Mohuchy