公开(公告)号：US20220303915A1

公开(公告)日：2022-09-22

申请号：US17203859

申请日：2021-03-17

Applicant: AT&T Intellectual Property I, L.P.

Inventor： Robert Bennett ,  Farhad Barzegar ,  Irwin Gerszberg ,  Giovanni Vannucci

IPC: H04W52/34 ,  H01P3/10 ,  H04B3/54 ,  H04B3/46

Abstract: Aspects of the subject disclosure may include, systems, apparatuses, and methods for determining that a load associated with a transmission medium exceeds a first threshold, wherein the transmission medium guides a first electromagnetic wave that propagates along the transmission medium from a first waveguide device to a second waveguide device without requiring an electrical return path, and based on the determining that the load exceeds the first threshold, enabling an injector to supply power to the transmission medium utilizing a very low frequency (VLF) generator. Other embodiments are disclosed.

公开(公告)号：US11431555B2

公开(公告)日：2022-08-30

申请号：US16595077

申请日：2019-10-07

Applicant: AT&T Intellectual Property I, L.P.

Inventor： Farhad Barzegar ,  Irwin Gerszberg ,  Giovanni Vannucci ,  Peter Wolniansky ,  Paul Shala Henry

IPC: H04J3/08 ,  H04L41/0668 ,  H04B3/54 ,  H04B17/17

Abstract: Aspects of the subject disclosure may include, a system that facilitates transmitting a plurality of ultra-wideband electromagnetic waves that propagates along a surface of a first transmission medium without requiring an electrical return path, wherein the first plurality of ultra-wideband electromagnetic waves conveys a plurality of communication signals, detecting an attenuation in the plurality of ultra-wideband electromagnetic waves that affects a propagation of the plurality of ultra-wideband electromagnetic waves along the first surface of the first transmission medium, and responsive to the detecting, redirecting at least a portion of the plurality of ultra-wideband electromagnetic waves to an interface of a second transmission medium. Other embodiments are disclosed.

公开(公告)号：US11387560B2

公开(公告)日：2022-07-12

申请号：US16701348

申请日：2019-12-03

Applicant: AT&T Intellectual Property I, L.P.

Inventor： Shikik Johnson ,  Paul Shala Henry ,  Giovanni Vannucci ,  Peter Wolniansky ,  Robert Bennett ,  Thomas M. Willis, III ,  Donald J. Barnickel ,  Farhad Barzegar ,  Irwin Gerszberg

IPC: H01Q13/00 ,  H01Q9/04 ,  H01P5/02 ,  H04B3/52

Abstract: Aspects of the subject disclosure may include, a device having a cylindrical coupler having a metallic shell that surrounds a transmission medium, wherein the cylindrical coupler launches a radio frequency signal from an aperture of the metallic shell as a guided electromagnetic wave that is bound to an outer surface of the transmission medium, and wherein the guided electromagnetic wave propagates along the outer surface of the transmission medium without requiring any electrical return path. An impedance matching element has a conductive trough within the metallic shell, wherein the impedance matching element couples the radio frequency signal to the cylindrical coupler via a coaxial feed point within the conductive trough, and wherein the conductive trough includes a first end forming a short circuit with the metallic shell and further includes a second end forming an open circuit within the metallic shell.

公开(公告)号：US11362438B2

公开(公告)日：2022-06-14

申请号：US16208781

申请日：2018-12-04

Applicant: AT&T Intellectual Property I, L.P.

Inventor： Paul Shala Henry ,  Robert Bennett ,  Donald J. Barnickel ,  Harold Lee Rappaport ,  Giovanni Vannucci ,  Farhad Barzegar ,  Irwin Gerszberg ,  Thomas M. Willis, III

IPC: H04B3/50 ,  H01Q21/06 ,  H01Q19/00 ,  H01P3/10 ,  H01Q19/08 ,  H01Q13/02 ,  H01P3/16 ,  H04B3/54 ,  H04B3/52

Abstract: In accordance with one or more embodiments, a guided wave launcher includes an array of antennas configured to generate near field signals. A controller is configured to: select, in response to a first control signal, at least one of a plurality of guided wave modes; and adjust beam steering parameters of the array of antennas according to the selected one(s) of the plurality of guided wave modes. The near field signals combine to induce a guided electromagnetic wave having the selected one(s) of the plurality of guided wave modes, wherein the first guided electromagnetic wave is guided by the transmission medium and propagates along the transmission medium without requiring an electrical return path.

公开(公告)号：US11223098B2

公开(公告)日：2022-01-11

申请号：US16703531

申请日：2019-12-04

Applicant: AT&T Intellectual Property I, L.P.

Inventor： Paul Shala Henry ,  Giovanni Vannucci ,  Peter Wolniansky ,  Thomas M. Willis, III ,  Robert Bennett ,  Farhad Barzegar ,  Irwin Gerszberg ,  Donald J. Barnickel

IPC: H01P3/10 ,  H04B3/56 ,  H04B3/52 ,  H04B3/38 ,  H01P3/16 ,  H04B3/58 ,  H01P5/02 ,  H01Q13/02

Abstract: Aspects of the subject disclosure may include, a system that facilitates directing a first electromagnetic wave to a device positioned along a transmission medium, the device facilitating a perturbation of the first electromagnetic wave, and the first electromagnetic wave having a first field intensity near an outer surface of the transmission medium, and generating, by the device, a second electromagnetic wave having a second field intensity near the outer surface of the transmission medium that is lower than the first field intensity of the first electromagnetic wave. Other embodiments are disclosed.

公开(公告)号：US20210392005A1

公开(公告)日：2021-12-16

申请号：US16900144

申请日：2020-06-12

Applicant: AT&T Intellectual Property I, L.P.

Inventor： Farhad Barzegar ,  Irwin Gerszberg

IPC: H04L12/10

Abstract: Aspects of the subject disclosure may include, providing, by a power supply of a communication device, energy to the communication device, wherein the power supply directly obtains the energy from a transmission medium via a capacitive divider and a DC converter, and wherein the communication device includes an insulator that electrically insulates the transmission medium from a utility structure supporting the communication device; adjusting a target ratio of the capacitive divider according to a load signal received from a load sensor coupled to the communication device, where the adjusting the target ratio comprises changing a state of a switch connected with at least a portion of a group of first capacitors of the capacitive divider according to the load signal; generating, by the communication device, a signal; and inducing according to the signal, by a coupler of the communication device, an electromagnetic wave that propagates along the transmission medium without requiring an electrical return path. Other embodiments are disclosed.

公开(公告)号：US11201753B1

公开(公告)日：2021-12-14

申请号：US16900144

申请日：2020-06-12

Applicant: AT&T Intellectual Property I, L.P.

Inventor： Farhad Barzegar ,  Irwin Gerszberg

IPC: H04L12/10

Abstract: Aspects of the subject disclosure may include, providing, by a power supply of a communication device, energy to the communication device, wherein the power supply directly obtains the energy from a transmission medium via a capacitive divider and a DC converter, and wherein the communication device includes an insulator that electrically insulates the transmission medium from a utility structure supporting the communication device; adjusting a target ratio of the capacitive divider according to a load signal received from a load sensor coupled to the communication device, where the adjusting the target ratio comprises changing a state of a switch connected with at least a portion of a group of first capacitors of the capacitive divider according to the load signal; generating, by the communication device, a signal; and inducing according to the signal, by a coupler of the communication device, an electromagnetic wave that propagates along the transmission medium without requiring an electrical return path. Other embodiments are disclosed.

公开(公告)号：US11063633B2

公开(公告)日：2021-07-13

申请号：US16738232

申请日：2020-01-09

Applicant: AT&T Intellectual Property I, L.P.

Inventor： Bruce Stuckman ,  Paul Shala Henry ,  Robert Bennett ,  Irwin Gerszberg ,  Farhad Barzegar ,  Donald J. Barnickel ,  Thomas M. Willis, III

IPC: H04B3/56 ,  H04B7/155 ,  H01P5/12 ,  H01P5/18

Abstract: Aspects of the subject disclosure may include, for example, a transmission device that includes a first coupler that guides a first electromagnetic wave to a first junction to form a second electromagnetic wave that is guided to propagate along the outer surface of the transmission medium via one or more guided-wave modes. These mode(s) have an envelope that varies as a function of angular deviation and/or longitudinal displacement. Other embodiments are disclosed.

公开(公告)号：US11063334B2

公开(公告)日：2021-07-13

申请号：US16704011

申请日：2019-12-05

Applicant: AT&T Intellectual Property I, L.P.

Inventor： Paul Shala Henry ,  Ed Guntin ,  Giovanni Vannucci ,  Peter Wolniansky ,  Thomas M. Willis, III ,  Robert Bennett ,  Farhad Barzegar ,  Irwin Gerszberg ,  Donald J. Barnickel

IPC: H01P1/00 ,  H01P3/16

Abstract: Aspects of the subject disclosure may include, a system that facilitates generating one or more tuning signals supplied to a material positioned along a portion of an inner surface of a structure of the waveguide system, the material facilitating generation of electromagnetic waves having a desired wave mode, and generating an electromagnetic wave with the desired wave mode, the electromagnetic wave propagating along a transmission medium without relying on an electrical return path to facilitate propagation of the electromagnetic wave along the transmission medium. Other embodiments are disclosed.

公开(公告)号：US20210176010A1

公开(公告)日：2021-06-10

申请号：US16702879

申请日：2019-12-04

Applicant: AT&T Intellectual Property I, L.P.

Inventor： Robert Bennett ,  Farhad Barzegar ,  Donald J. Barnickel ,  Giovanni Vannucci ,  Irwin Gerszberg ,  Paul Shala Henry ,  Peter Wolniansky ,  Thomas M. Willis, III

IPC: H04L1/18 ,  H04L1/20 ,  H04L5/06

Abstract: In accordance with one or more embodiments, a transmission device operates by: generating a transmit signal conveying transmit data in accordance with an HARQ protocol; converting the transmit signal to transmitted guided electromagnetic waves that propagate along a surface of a transmission medium; converting to a receive signal received guided electromagnetic waves that propagate along the surface of the transmission medium; generating, based on the receive signal, corona discharge data that indicates a corona discharge in proximity to the transmission medium during a first time period; identifying, responsive to the corona discharge data, a first packet of the transmit signal that was converted to transmitted guided electromagnetic waves during the first time period; and regenerating the transmit signal to include the first packet for retransmission via the transmitted guided electromagnetic waves, without waiting for a repeat request to be received from the remote device indicating the first packet.