Waveguide Patents (Class 333/157)
  • Patent number: 10944148
    Abstract: Embodiments described herein perform incisions along the direction of the long axis of the waveguide, thereby exposing a trench structure which can be readily plated. Once divided and plated, the individual cut pieces can then be secured together to restore the original waveguide structure. In this fashion, multiple cut pieces can be secured together and used as “building blocks” to create a modular solution which can be used to provide a number of different customizable waveguide structures. Thus, embodiments described herein can perform plating procedures in a less expensive manner while achieving the benefits of ganged waveguide structures. Moreover, embodiments described herein can offer a modular approach to ganged waveguide design thereby allowing for end-user flexibility in testing.
    Type: Grant
    Filed: February 4, 2016
    Date of Patent: March 9, 2021
    Assignee: ADVANTEST CORPORATION
    Inventors: Don Lee, Daniel Lam, Roger Mcaleenan, Kosuke Miyao
  • Patent number: 10804584
    Abstract: Systems, methods, and devices for diverting surface current on a display panel support plate are provided. An electronic transceiver device including a display panel may include a display back plate and a support plate, such that the support plate is disposed beneath the display back plate. The support plate may include an array of slots etched into the support plate, such that the array of slots may be used and positioned to divert an electromagnetic field on the support plate to redirect propagation of the surface current towards ground pins located on the display panel housing.
    Type: Grant
    Filed: March 18, 2019
    Date of Patent: October 13, 2020
    Assignee: Apple Inc.
    Inventors: Ali Foudazi, Cheung-Wei Lam, Mahmoud N. Mahmoud
  • Patent number: 10727581
    Abstract: An antenna array that can include a plurality of antenna cells positioned in a global coordinate system of the antenna array. Each of the plurality of antenna cells has a respective local coordinate system and can include a radiating element having a predetermined angle of rotation defined in the global coordinate system and an antenna port coupled to the radiating element, the antenna port being positioned at a particular set of coordinates in the respective local coordinate system. The particular set of coordinates of the antenna port of each of the plurality of antenna cells can be the same.
    Type: Grant
    Filed: December 27, 2019
    Date of Patent: July 28, 2020
    Assignee: VIASAT, INC.
    Inventor: Frederic Bongard
  • Patent number: 10613216
    Abstract: A radar system to detect and track objects in three dimensions. The radar system including antennae, transmit, receive and processing electronics is all in a small, lightweight, low-cost, highly integrated package. The radar system uses a wide azimuth, narrow elevation radar pattern to detect objects and a Wi-Fi radio to communicate to one or more receiving and display units. One application may include mounting the radar system in an existing radome on an aircraft to detect and avoid objects during ground operations. Objects may include other moving aircraft, ground vehicles, buildings or other structures that may be in the area. The system may transmit information to both pilot and ground crew.
    Type: Grant
    Filed: August 31, 2016
    Date of Patent: April 7, 2020
    Assignee: Honeywell International Inc.
    Inventors: David C. Vacanti, Nigel Wang
  • Patent number: 10553940
    Abstract: An antenna array that can include a plurality of antenna cells positioned in a global coordinate system of the antenna array. Each of the plurality of antenna cells has a respective local coordinate system and can include a radiating element having a predetermined angle of rotation defined in the global coordinate system and an antenna port coupled to the radiating element, the antenna port being positioned at a particular set of coordinates in the respective local coordinate system. The particular set of coordinates of the antenna port of each of the plurality of antenna cells can be the same.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: February 4, 2020
    Assignee: VIASAT, INC.
    Inventor: Frederic Bongard
  • Patent number: 10498003
    Abstract: Aspects of the subject disclosure may include, for example, a coupler including a receiving portion that receives a first electromagnetic wave conveying first data from a transmitting device. A guiding portion guides the first electromagnetic wave to a junction for coupling the first electromagnetic wave to a transmission medium. The first electromagnetic wave propagates via at least one first guided wave mode. The coupling of the first electromagnetic wave to the transmission medium forms a second electromagnetic wave that is guided to propagate along the outer surface of the transmission medium via at least one second guided wave mode that differs from the at least one first guided wave mode. Other embodiments are disclosed.
    Type: Grant
    Filed: February 7, 2019
    Date of Patent: December 3, 2019
    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: 10347959
    Abstract: Conventional coaxial wiring devices present a problem in that the management of the manufacturing process therefor is difficult. A coaxial wiring device according to the present invention includes a first member, a second member, and a conductor plate.
    Type: Grant
    Filed: September 14, 2017
    Date of Patent: July 9, 2019
    Assignee: NEC Corporation
    Inventors: Takahiro Miyamoto, Norihisa Shiroyama, Kiyotake Sasaki, Sumio Ueda
  • Patent number: 10263310
    Abstract: A microwave device, such as a waveguide, transmission line, waveguide circuit, transmission line circuit or radio frequency part of an antenna system, is disclosed. The microwave device comprises two conducting layers arranged with a gap there between, and a set of periodically or quasi-periodically arranged protruding elements fixedly connected to at least one of said conducting layers, thereby forming a texture to stop wave propagation in a frequency band of operation in other directions than along intended waveguiding paths, thus forming a so-called gap waveguide. All protruding elements are connected electrically to each other at their bases at least via the conductive layer on which they are fixedly connected, and some or all of the protruding elements are in conductive or non-conductive contact also with the other conducting layer. A corresponding manufacturing method is also disclosed.
    Type: Grant
    Filed: April 10, 2015
    Date of Patent: April 16, 2019
    Assignee: GAPWAVES AB
    Inventors: Per-Simon Kildal, Abbas Vosoogh, Farid Hadavy, Stefan Carlsson, Lars-Inge Sjöqvist
  • Patent number: 10263313
    Abstract: Aspects of the subject disclosure may include, for example, a coupler including a receiving portion that receives a first electromagnetic wave conveying first data from a transmitting device. A guiding portion guides the first electromagnetic wave to a junction for coupling the first electromagnetic wave to a transmission medium. The first electromagnetic wave propagates via at least one first guided wave mode. The coupling of the first electromagnetic wave to the transmission medium forms a second electromagnetic wave that is guided to propagate along the outer surface of the transmission medium via at least one second guided wave mode that differs from the at least one first guided wave mode. Other embodiments are disclosed.
    Type: Grant
    Filed: August 28, 2018
    Date of Patent: April 16, 2019
    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: 10263725
    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: August 13, 2018
    Date of Patent: April 16, 2019
    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: 10256517
    Abstract: A waveguide antenna assembly conformable to the configuration of a supported device for transceiving signals of a predetermined radio frequency range comprising at least two collaterally aligned conductive layers configured in a conformable loop so as to form an electrically isolating channel dimensionally configured for support of the waveguide modes of the predetermined frequency range, an aperture for electromagnetically transceiving the signals, wherein the aperture extends along a surface of the electrically isolating channel such that the aperture extends between the outer edge of the inner surface of the first conductive layer and the second conductive layer, a back short spaced apart from the aperture a predetermined distance equal to a resonant length of the waveguide mode wavelength so as to provide a circuit impedance between the first conductive layer and the second conductive layer for tuning the waveguide to transceive the signals, excitation points coupled to the aperture to propagate waveguide
    Type: Grant
    Filed: October 26, 2016
    Date of Patent: April 9, 2019
    Inventor: Kim Poulson
  • Patent number: 10161631
    Abstract: A system for operating a damper comprises a flue pipe assembly, and a damper movable between an open position and a closed position within the flue pipe assembly. At least one thermoelectric generator is coupled to a surface of the flue pipe assembly. Operation of the damper is achieved by the thermoelectric generator harvesting thermal energy from the flue pipe assembly and converting it into usable electrical energy for actuation of the damper.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: December 25, 2018
    Assignee: Field Controls, LLC
    Inventor: Eric A. Hokanson
  • Patent number: 10084223
    Abstract: Disclosed are various systems and methods directed to the launching of a guided surface wave embodying a modulated signal using a guided surface waveguide probe. A modulated signal is generated and coupled to a guided surface waveguide probe. A resulting guided surface wave is launched that decays exponentially as a function of distance.
    Type: Grant
    Filed: August 28, 2015
    Date of Patent: September 25, 2018
    Assignee: CPG TECHNOLOGIES, LLC
    Inventors: James F. Corum, Kenneth L. Corum
  • Patent number: 10079652
    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: January 23, 2018
    Date of Patent: September 18, 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: 10079419
    Abstract: Aspects of the subject disclosure may include, for example, a coupler including a receiving portion that receives a first electromagnetic wave conveying first data from a transmitting device. A guiding portion guides the first electromagnetic wave to a junction for coupling the first electromagnetic wave to a transmission medium. The first electromagnetic wave propagates via at least one first guided wave mode. The coupling of the first electromagnetic wave to the transmission medium forms a second electromagnetic wave that is guided to propagate along the outer surface of the transmission medium via at least one second guided wave mode that differs from the at least one first guided wave mode. Other embodiments are disclosed.
    Type: Grant
    Filed: January 22, 2018
    Date of Patent: September 18, 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: 10020843
    Abstract: Aspects of the subject disclosure may include, for example, an apparatus including a waveguide, an antenna, and a transmitter. The transmitter can facilitate transmission of first electromagnetic waves via the antenna, the first electromagnetic waves having a fundamental mode. The waveguide can facilitate propagation of the first electromagnetic waves at least in part on a surface of the waveguide. The waveguide can be positioned at a location that enables the first electromagnetic waves to induce second electromagnetic waves having fundamental and non-fundamental modes that propagate on a surface of a transmission medium. Other embodiments are disclosed.
    Type: Grant
    Filed: September 5, 2017
    Date of Patent: July 10, 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: 9912033
    Abstract: Aspects of the subject disclosure may include, for example, a coupler including a receiving portion that receives a first electromagnetic wave conveying first data from a transmitting device. A guiding portion guides the first electromagnetic wave to a junction for coupling the first electromagnetic wave to a transmission medium. The first electromagnetic wave propagates via at least one first guided wave mode. The coupling of the first electromagnetic wave to the transmission medium forms a second electromagnetic wave that is guided to propagate along the outer surface of the transmission medium via at least one second guided wave mode that differs from the at least one first guided wave mode. Other embodiments are disclosed.
    Type: Grant
    Filed: March 15, 2016
    Date of Patent: March 6, 2018
    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: 9893402
    Abstract: Disclosed are various embodiments for superposition of guided surface wave launched along the surface of a lossy medium such as, e.g., a terrestrial medium by exciting a guided surface waveguide probe. In one example, among others, a system includes an array of guided surface waveguide probes configured to launch guided surface waves along a surface of a lossy conducting medium and an array control system configured to control operation of waveguide probes in the array via one or more feed networks. The array control circuit can control operation of the guided surface waveguide probes to maintain a predefined radiation pattern produced by the guided surface waves. In another example, a method includes providing voltage excitation to first and second guided surface waveguide probes to launch guided surface waves with the voltage excitation provided to the second guided surface waveguide probe delayed by a defined phase delay.
    Type: Grant
    Filed: September 9, 2015
    Date of Patent: February 13, 2018
    Assignee: CPG Technologies, LLC
    Inventors: James F. Corum, Kenneth L. Corum
  • Patent number: 9876282
    Abstract: The present application discloses a dual open-ended waveguide (DOEWG) antenna apparatus. The apparatus may include a plurality of radiating elements configured to radiate electromagnetic energy. Each radiating element may have an associated amplitude and phase. The apparatus may further include a waveguide configured to propagate an electromagnetic signal from a waveguide feed to the radiating elements. The radiating elements are arranged in a plurality of doublets. Each doublet includes at least two radiating elements and is coupled to the waveguide via a respective doublet neck. At least one doublet in the plurality of doublets is coupled to the waveguide via a doublet neck that has a first height proximate a first radiating element in the at least one doublet and a second height proximate a second radiating element in the at least one doublet in which the first height is different from the second height.
    Type: Grant
    Filed: April 2, 2015
    Date of Patent: January 23, 2018
    Assignee: Waymo LLC
    Inventors: Jamal Izadian, Russell Smith
  • Patent number: 9853343
    Abstract: Aspects of the subject disclosure may include, for example, a coupler including a receiving portion that receives a first electromagnetic wave conveying first data from a transmitting device. A guiding portion guides the first electromagnetic wave to a junction for coupling the first electromagnetic wave to a transmission medium. The first electromagnetic wave propagates via at least one first guided wave mode. The coupling of the first electromagnetic wave to the transmission medium forms a second electromagnetic wave that is guided to propagate along the outer surface of the transmission medium via at least one second guided wave mode that differs from the at least one first guided wave mode. Other embodiments are disclosed.
    Type: Grant
    Filed: March 8, 2017
    Date of Patent: December 26, 2017
    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: 9800327
    Abstract: Aspects of the subject disclosure may include, for example, a transmission system having a coupling device, a bypass circuit, a memory and a processor. The coupling device can facilitate transmission or reception of electromagnetic waves that propagate along a surface of a transmission medium. The memory can store instructions, which when executed by the processor, causes the processor to perform operations including restarting a timer to prevent the bypass circuit from disabling the transmission or reception of electromagnetic waves by the coupling device. Other embodiments are disclosed.
    Type: Grant
    Filed: November 20, 2014
    Date of Patent: October 24, 2017
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Irwin Gerszberg, Farhad Barzegar, Paul Shala Henry, Robert Bennett, Donald J Barnickel, Thomas M. Willis, III
  • Patent number: 9780834
    Abstract: Aspects of the subject disclosure may include, for example, an apparatus including a waveguide, an antenna, and a transmitter. The transmitter can facilitate transmission of first electromagnetic waves via the antenna, the first electromagnetic waves having a fundamental mode. The waveguide can facilitate propagation of the first electromagnetic waves at least in part on a surface of the waveguide. The waveguide can be positioned at a location that enables the first electromagnetic waves to induce second electromagnetic waves having fundamental and non-fundamental modes that propagate on a surface of a transmission medium. Other embodiments are disclosed.
    Type: Grant
    Filed: October 21, 2014
    Date of Patent: October 3, 2017
    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: 9749083
    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: November 29, 2016
    Date of Patent: August 29, 2017
    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: 9742521
    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: November 14, 2016
    Date of Patent: August 22, 2017
    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: 9544006
    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: November 20, 2014
    Date of Patent: January 10, 2017
    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: 9509056
    Abstract: Techniques for implementing series-fed antenna arrays with a variable dielectric waveguide. In one implementation, coupling elements with optional controlled phase shifters are placed adjacent each radiating element of the array. To avoid frequency sensitivity of the resulting array, one or more waveguides have a variable propagation constant. The variable waveguide may use certain materials exhibiting this phenomenon, or may have configurable gaps between layers. Plated-through holes and pins can control the gaps; and/or a 2-D circular or a rectangular travelling wave array of scattering elements can be used as well.
    Type: Grant
    Filed: June 9, 2015
    Date of Patent: November 29, 2016
    Assignee: AMI Research & Development, LLC
    Inventors: John T. Apostolos, Benjamin McMahon, Brian Molen, Judy Feng, William Mouyos
  • Patent number: 9263781
    Abstract: A method and apparatus for a polarizer. The apparatus comprises a dielectric rod, a first array of slots, and a second array of slots. The first array of slots and the second array of slots are formed in sidewalls of the dielectric rod. The first array of slots is substantially opposite to the second array of slots. The first array of slots and the second array of slots are configured to shift a first component orthogonal to a second component in a signal traveling through the dielectric rod by around 90 degrees with respect to each other. The dielectric rod may be a solid material or comprised of layers of dielectric substrates with metal tabs.
    Type: Grant
    Filed: November 21, 2013
    Date of Patent: February 16, 2016
    Assignee: THE BOEING COMPANY
    Inventors: Blaser Larry Bruce, John B. O'Connell
  • Patent number: 9041612
    Abstract: Implementations for exciting two or more modes via modal decomposition of a pulse by a wave launcher are generally disclosed.
    Type: Grant
    Filed: October 18, 2013
    Date of Patent: May 26, 2015
    Assignee: New Jersey Institute of Technology
    Inventors: Edip Niver, Mohamed A. Salem, Aladin H. Kamel
  • Patent number: 9024706
    Abstract: Electromagnetic slow wave structures (SWS) comprised of arrays of conductive obstacles are formed inside conductive parallel-plate waveguides These SWS may be formed using, for example, MEMS manufacturing processes at the wafer level on substrates including ceramic and silicon. An effective relative permittivity in the range of 15 to 40 may be obtained at millimeterwave frequencies. The SWS can be made absorptive by incorporating resistive losses in a plate of the PPW. Applications of these slow wave structures include delay lines and bootlace lens beamformers for microwave and millimeterwave antenna systems.
    Type: Grant
    Filed: December 7, 2011
    Date of Patent: May 5, 2015
    Assignee: Wemtec, Inc.
    Inventor: William E. McKinzie, III
  • Patent number: 9000866
    Abstract: A parallel capacitor varactor shunt switch device may include a shunt layer, a coplanar waveguide (CPW) layer, and a tunable thin film dielectric layer that is interposed between the shunt layer and the CPW layer. The tunable thin film dielectric layer electrically isolates the shunt layer from the CPW layer. The shunt layer includes a plurality of parallel shunt lines. The CPW layer includes a CPW signal transmission line with two CPW ground lines parallel to the CPW signal transmission line. A plurality of varactor areas equal in number to the plurality of parallel shunt lines are defined in the CPW signal transmission line, each varactor area corresponding to an overlap of the CPW signal transmission line with a respective shunt line and each respective parallel shunt line and its corresponding varactor area defines a capacitor.
    Type: Grant
    Filed: June 26, 2012
    Date of Patent: April 7, 2015
    Assignee: University of Dayton
    Inventor: Guru Subramanyam
  • Publication number: 20150028967
    Abstract: A twist for coupling radiation between orthogonal waveguides is provided. The twist includes at least three cavities opening from at least one of a first X1-Y1 surface and a second X2-Y2 surface of a metal block. A first cavity has a first opening in a first Y-Z plane and a second opening in a second Y-Z plane offset from the first Y-Z plane by a first length. A second cavity shares the second opening with the first cavity and has a third opening in a third Y-Z plane offset from the second Y-Z plane by a second length and has at least two heights and at least two widths. A last cavity shares a next-to-last opening in a next-to-last Y-Z plane with a next-to-last cavity. The last cavity has a last opening in a last Y-Z plane offset from the next-to-last Y-Z plane by a last length.
    Type: Application
    Filed: July 23, 2013
    Publication date: January 29, 2015
    Inventor: Adam M. Kroening
  • Publication number: 20140266503
    Abstract: Dispersive properties of a linear dispersive delay line are retained in a spiral configuration by constraining the radius of curvature depending on a desired propagation mode. The compact form factor spiral can be either a continuous spiral or a piecewise linear approximation. The spiral comprises a highly dielectric waveguide such as titanium dioxide or barium tetratitanate. Preferably, a spacer with a low dielectric constant and a microstrip are disposed on the top surface. The microstrip prevents attenuation of low frequencies, thereby increasing the operating frequency range. A second dielectric spacer and a second microstrip can be deposited on the bottom surface of the waveguide. Alternatively, the bottom surface of the waveguide can face a ground plane. The waveguide can be fed by horns or half-horns.
    Type: Application
    Filed: March 13, 2014
    Publication date: September 18, 2014
    Applicant: AMI Research & Development, LLC
    Inventors: John T. Apostolos, William Mouyos, Benjamin McMahon
  • Patent number: 8786380
    Abstract: A polarization converter may include an annular waveguide comprising an inner conductor having an outer surface and an outer conductor having an inner surface coaxial with the outer surface of the inner conductor. A plurality of loading structures may be disposed within the annular waveguide to form a plurality of regions within the annular waveguide including an alternating sequence of high phase shift regions and low phase shift regions along a direction of propagation of an electromagnetic wave. The plurality of loading structures may be configured to introduce a predetermined relative phase shift between orthogonally polarized first and second components of the electromagnetic wave for a predetermined operating frequency band. The plurality of loading structures may be further configured to suppress propagation of one or more higher order modes in the annular waveguide over the operating frequency band.
    Type: Grant
    Filed: August 30, 2011
    Date of Patent: July 22, 2014
    Assignee: Optim Microwave, Inc.
    Inventors: John P. Mahon, Cynthia P. Espino
  • Patent number: 8674784
    Abstract: A microwave pulse compressor has an elongated, cross-sectionally oversized waveguide resonator for decreasing the attenuation of the resonator, thereby increasing the resonator's QO The increased Q of the resonator guide results in more stored energy and greater output pulse power. The pulse compressor is symmetrically constructed to suppress high order modes that can be generated in oversized waveguides.
    Type: Grant
    Filed: June 23, 2009
    Date of Patent: March 18, 2014
    Inventor: Ray M. Johnson
  • Patent number: 8643560
    Abstract: A feed network may include a cylindrical common waveguide terminating in a common port and an orthomode transducer having a first port for coupling a first linearly polarized mode to the cylindrical common waveguide and a second port for coupling a second linearly polarized mode to the cylindrical common waveguide, the second linearly polarized mode orthogonal to the first linearly polarized mode. A filter-polarizer element may be disposed within the cylindrical common waveguide. The filter-polarizer element may be rotatable about an axis of the cylindrical common waveguide. The filter-polarizer element may be configured to cause a predetermined relative phase shift between a first signal and a second signal propagating in the cylindrical common waveguide. The filter-polarizer element may be further configured to suppress propagation of at least one undesired mode in the cylindrical common waveguide.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: February 4, 2014
    Assignee: Optim Microwave, Inc.
    Inventors: John P. Mahon, Cynthia P. Espino
  • Patent number: 8633786
    Abstract: In one or more embodiments described herein, there is provided an apparatus comprising input and output waveguides, and a carbon nanotube array. The array is positioned to electromagnetically couple the waveguides. The array has a slow-wave factor associated therewith, the speed of propagation of waves through the array being determined by this slow-wave factor. The array also has a first interface region. The apparatus further comprises a tuning element positioned to oppose the first interface region of the array to define a tuning distance. The slow-wave factor is affected by this tuning distance, and the tuning element is configured to be movable with respect to the first interface region so as to vary this tuning distance and thereby control the speed of propagation of waves through the array.
    Type: Grant
    Filed: September 27, 2010
    Date of Patent: January 21, 2014
    Assignee: Nokia Corporation
    Inventors: Vladimir Ermolov, Igor Nefedov
  • Publication number: 20130222081
    Abstract: Various exemplary embodiments relate to an antenna feed configured to receive a signal having a wavelength. They antenna feed may include a cylindrical body and four pin groups. Each pin group may include two pins in close proximity extending across the center of the cylindrical body. One of the two pins may be rotated approximately 22.5° from the angle of the other pin. Each pin group may be spaced approximately one quarter of a wavelength away from each other, and may be rotated approximately 22.5° from the angle of the previous pin group.
    Type: Application
    Filed: February 28, 2012
    Publication date: August 29, 2013
    Applicant: Radio Frequency Systems, Inc.
    Inventor: James W. Nelson
  • Patent number: 8337764
    Abstract: A recess waveguide microwave chemical plant for production of ethene from natural gas and a process for production of ethene using the plant. The plant includes a recess waveguide, a mode transducer and coupling orifice plate, an adjustable short-circuiting plunger, and a chemical reactor; wherein with the recess waveguide as a main body, the mode transducer and coupling orifice plate is at the left side of the recess waveguide, the adjustable short-circuiting plunger is at the right side of the recess waveguide, and the chemical reactor is across the recess waveguide.
    Type: Grant
    Filed: November 10, 2006
    Date of Patent: December 25, 2012
    Inventors: Hongsheng Yang, Dekun Sun
  • Publication number: 20120274419
    Abstract: Provided is a phase shifter using a substrate integrated waveguide (SIW). The phase shifter includes: a substrate; and a waveguide integrated on the substrate, wherein the waveguide includes an input port, an out port, two columns of via walls which are separated by a width of the waveguide and are arranged parallel to each other, and either a plurality of air holes which are formed to shift a phase of a signal between the input port and the output port or a plurality of rods, each including an air hole and a dielectric material inserted into the air hole.
    Type: Application
    Filed: November 4, 2010
    Publication date: November 1, 2012
    Inventors: Hai-Young Lee, Ki-Bum Kang, Jin do Byun
  • Patent number: 8213534
    Abstract: Disclosed herein is a transmission apparatus including a first transmission block configured to modulate a carrier-wave signal having a predetermined frequency on the basis of a first input signal, thereby outputting a first transmission signal; and a second transmission block configured to modulate a carrier-wave signal having a predetermined frequency on the basis of a second input signal, thereby outputting a second transmission signal; wherein a first input point for inputting the first transmission signal outputted from the first transmission block into a waveguide and a second input point for inputting the second transmission signal outputted from the second transmission block into the waveguide are shifted by a distance for providing a predetermined phase difference between the first transmission signal and the second transmission signal.
    Type: Grant
    Filed: March 25, 2010
    Date of Patent: July 3, 2012
    Assignee: Sony Corporation
    Inventors: Shigenori Uchida, Norihito Mihota, Kenichi Kawasaki
  • Patent number: 8179331
    Abstract: A method of changing phase of a microwave electromagnetic beam in free space is provided wherein a cascade of device layers is located transverse to a path of the microwave beam. Each of the device layers have one or more columns. Each column has a device combination series-coupled to an adjacent device combination in the column. Each device combination has a first device having inductive characteristics at microwave frequencies and a second device series-coupled to the first device. The second device has at microwave frequencies characteristics of a fixed capacitance in parallel with a variable capacitance. The capacitance of one or more of the second devices is variable to establish a desired phase shift and a desired frequency band edge within a desired frequency pass band.
    Type: Grant
    Filed: March 26, 2010
    Date of Patent: May 15, 2012
    Assignee: HRL Laboratories, LLC
    Inventor: Daniel Frederic Sievenpiper
  • Publication number: 20120081003
    Abstract: A terahertz interaction circuit is provided. The terahertz interaction circuit includes a waveguide and an electron beam tunnel. The waveguide has a folded shape and in which an electromagnetic wave propagates. The electron beam tunnel is formed to penetrate through the waveguide. An electron beam passes through the electron beam tunnel. The waveguide includes a ridge portion in which a portion of a surface of the waveguide protrudes into the waveguide.
    Type: Application
    Filed: March 28, 2011
    Publication date: April 5, 2012
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Chan-wook BAIK, Ho-young AHN
  • Publication number: 20120075037
    Abstract: In one or more embodiments described herein, there is provided an apparatus comprising input and output waveguides, and a carbon nanotube array. The array is positioned to electromagnetically couple the waveguides. The array has a slow-wave factor associated therewith, the speed of propagation of waves through the array being determined by this slow-wave factor. The array also has a first interface region. The apparatus further comprises a tuning element positioned to oppose the first interface region of the array to define a tuning distance. The slow-wave factor is affected by this tuning distance, and the tuning element is configured to be movable with respect to the first interface region so as to vary this tuning distance and thereby control the speed of propagation of waves through the array.
    Type: Application
    Filed: September 27, 2010
    Publication date: March 29, 2012
    Applicant: NOKIA CORPORATION
    Inventors: Vladimir ERMOLOV, Igor NEFEDOV
  • Patent number: 8008984
    Abstract: There is disclosed a linear polarization to circular polarization converter. An outside surface of an inner conductor may be coaxial with the inside surface of an outer conductor. First and second diametrically opposed fins may extend outward from the outer surface of the inner conductor. Each of the first and second fins may include a conductive fin and a dielectric fin.
    Type: Grant
    Filed: January 11, 2010
    Date of Patent: August 30, 2011
    Assignee: Optim Microwave, Inc.
    Inventors: John P. Mahon, Cynthia P. Espino
  • Patent number: 8008983
    Abstract: An adjustable assembly apparatus includes a waveguide phase shifter and a waveguide multiplexer. The waveguide phase shifter has a first flange structure and the waveguide multiplexer has a second flange structure. The second flange structure and the first flange structure are embedded, and the polarization directions of the waveguide phase shifter and the waveguide multiplexer are orthogonal. In an embodiment, the first flange structure includes a bulge, the second flange structure includes a recess, and the bulge is embedded in the recess. The polarization directions of the bulge of the waveguide phase shifter and the recess of the waveguide multiplexer differ by 90 degrees.
    Type: Grant
    Filed: January 9, 2009
    Date of Patent: August 30, 2011
    Assignee: Microelectronics Technology Inc.
    Inventors: Tung Yi Ko, Chih Jung Lin
  • Publication number: 20110187614
    Abstract: This high-frequency waveguide is formed by first and second conductors (22, 23) disposed opposite each other at a spacing of ?0/2, where ?0 is the free space wavelength of the operating frequency of a high-frequency signal. A ridge (25) is provided at the waveguide formation portion between these first and second conductors (22, 23), which protrudes from one of the first and second conductors (22, 23) toward the other and is formed extending along the waveguide formation portion. A plurality of columnar protrusions (24) with a height of ?0/4 are disposed at a spacing of less than ?0/2 to at least one of the first and second conductors (22, 23) on the outside of the waveguide formation portion and to the outside of the ridge (25).
    Type: Application
    Filed: October 1, 2009
    Publication date: August 4, 2011
    Inventors: Hideki Kirino, Isao Yamamoto, Masashi Watanabe
  • Patent number: 7772940
    Abstract: There is disclosed a feed network including a circular common waveguide having an axis and terminating in a common port and a first port for coupling a first linearly polarized mode to the circular common waveguide. A phase shifting element may be disposed within the circular waveguide. The phase shifting element may be adapted to cause a predetermined phase shift between a first signal and a second signal propagating in the common waveguide. The phase shifting element may be rotatable about the axis of the common waveguide.
    Type: Grant
    Filed: May 16, 2008
    Date of Patent: August 10, 2010
    Assignee: Optim Microwave, Inc.
    Inventors: John P. Mahon, Cynthia P. Espino
  • Patent number: 7768362
    Abstract: There is provided a comb polarizer suitable for millimeter band applications including: a waveguide having an aperture side formed of two separable half waveguides, and a comb shaped conductive unit having a plurality of cogs interposed between two half waveguides for transforming a linear polarized signal to a circular polarized signal.
    Type: Grant
    Filed: August 7, 2007
    Date of Patent: August 3, 2010
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Soon-Young Eom, Je-Hoon Yun, Soon-Ik Jeon, Chang-Joo Kim, Yury Borlsovich Korchemkin
  • Publication number: 20100176789
    Abstract: Analyzing a device under test (“DUT”) at higher frequencies. A phase shifter varies the phase of a standing wave on a transmission line coupled to the DUT. The standing wave magnitude is sampled at each of the phase shifts and one or more DUT characteristics are determined as a function of the sampled magnitudes and phase shifts. Further aspects include a related phase shifter comprising a waveguide having a plurality of sub-resonant slots formed therein and having active elements for loading the slots to control the phase shift applied to the signal.
    Type: Application
    Filed: January 15, 2009
    Publication date: July 15, 2010
    Applicant: THE CURATORS OF THE UNIVERSITY OF MISSOURI
    Inventors: Reza Zoughi, Mohamed Ahmed AbouKhousa, Sergiy Kharkivskiy
  • Patent number: RE45519
    Abstract: A right circular cylindrical body of an isotropic dielectric such as a cross-linked styrene copolymer, has respective pluralities of mutually parallel grooves formed in its axial end faces, spaced apart by an intermediate portion whose dimension c is a half wavelength. The axial lengths a, b of the grooves are such that when a wave passes through the body, a quarter wavelength phase difference is produced between a component of a wave having its E-vector parallel to the grooves and a component of the wave having its E-vector orthogonal to the grooves. Alternatively the plate may consist of two or more discrete bodies whose grooves are dimensioned to produce a total differential phase shift of one quarter wavelength.
    Type: Grant
    Filed: March 18, 2013
    Date of Patent: May 19, 2015
    Assignee: MBDA UK Limited
    Inventor: Charles Anthony Rowatt