With Reflector Patents (Class 343/779)
  • Patent number: 10355775
    Abstract: An RF communications transmitter system comprising a processor, a switch and a plurality of feedhorns. The switch is configured to receive a feed signal of a frequency bandwidth. The processor is configured to control the switch to provide the feed signal to each of at least two of the feedhorns for a respective time period. Each of the at least two feedhorns is configured to generate a beam during the respective time period that the feed signal is provided thereto, wherein the beam is formed based on the feed signal and is transmitted to cover a geographic area of the Earth. The formation and transmission of the beams by the feedhorns is controlled by the processor to provide a time-based allocation of bandwidth amongst the beams based on the time period that the feed signal is provided to each of the feedhorns and a respective frequency/polarization reuse scheme.
    Type: Grant
    Filed: February 27, 2018
    Date of Patent: July 16, 2019
    Assignee: Hughes Network Systems, LLC
    Inventors: Stanley Kay, Dave Roos, Paul Gaske, Anthony Noerpel
  • Patent number: 10326201
    Abstract: There are provided a communication excitation distribution calculating unit (11) that calculates an excitation distribution W1(t) of a communication beam using an excitation phase distribution S that directs a main lobe of the communication beam in a communication direction; an interference excitation distribution calculating unit (14) that calculates an excitation distribution W2(t) of an interference beam using an excitation phase distribution D that forms a null of an antenna pattern in the communication direction; and an excitation distribution combining unit (20) that combines the excitation distribution W1(t) of the communication beam and the excitation distribution W2(t) of the interference beam. An amplitude/phase controlling unit (30) controls amplitudes and phases of carrier signals to be provided to element antennas (3-1) to (3-K), in accordance with the combined excitation distribution obtained by the excitation distribution combining unit (20).
    Type: Grant
    Filed: January 27, 2017
    Date of Patent: June 18, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Tasuku Kuriyama, Satoshi Yamaguchi, Masataka Otsuka, Toru Fukasawa
  • Patent number: 10326203
    Abstract: A system for forming a beam includes one or more wave sources; one or more surface scattering antennas (for example, one or more holographic metasurface antennas) coupled to the one or more wave sources, wherein each of the one or more surface scattering antennas comprises an array of scattering elements that are dynamically adjustable in response to one or more waves provided by the one or more wave sources to produce a beam; and a beam shaper configured to receive the beam from each of the one or more surface scattering antennas and to redirect the beam, preferably, with gain.
    Type: Grant
    Filed: September 19, 2018
    Date of Patent: June 18, 2019
    Assignee: Pivotal Commware, Inc.
    Inventors: Eric James Black, Jay Howard McCandless
  • Patent number: 10199734
    Abstract: The present invention discloses an antenna for satellite communication having a structure for switching multiband signals. The antenna for satellite communication according to an embodiment of the present invention includes a main reflecting plate configured to be rotatable in a predetermined direction so as to be oriented in a direction in which a satellite is located, a first feed horn configured to be detachably installed in a region of an edge of the main reflecting plate, a sub-reflecting plate configured to be installed so as to be spaced apart from a reflecting surface of the main reflecting plate by a predetermined distance by at least one support means provided in a region of the main reflecting plate, and a second feed horn configured to be detachably installed on a side opposite to the reflecting surface of the sub-reflecting plate, wherein an installation position of the sub-reflecting plate is changeable.
    Type: Grant
    Filed: July 18, 2013
    Date of Patent: February 5, 2019
    Assignee: INTELLIAN TECHNOLOGIES INC.
    Inventors: Kwangsik Eom, Jeongwoo Park
  • Patent number: 10181643
    Abstract: Systems, methods, and apparatus for calibration for an offset antenna are disclosed. In one or more embodiments, the disclosed method involves calculating an estimated gimbal angle between the offset antenna and at least one target. Also, the method involves transmitting, by at least one target, at least one signal; and receiving, by the offset antenna, at least one signal. The method further involves pointing the offset antenna to an optimum gimbal angle to maximize received signal power. Additionally, the method involves comparing the optimum gimbal angle with the estimated gimbal angle to determine a difference in the gimbal angles. Also, the method involves calculating a bus, reflector, and/or feed error estimate by using the difference in the gimbal angles. Further, the method involves determining an azimuth and/or elevation correction for bus, reflector, and/or feed errors by using the bus, reflector, and/or feed error estimate.
    Type: Grant
    Filed: March 5, 2015
    Date of Patent: January 15, 2019
    Assignee: THE BOEING COMPANY
    Inventor: Yong Liu
  • Patent number: 9843104
    Abstract: Disclosed is a shaped horn in conjunction with a dielectric tube for enhanced aperture directivity that can achieve a near optimum efficiency. The shaped horn provides additional mode control to provide an improved off-axis cross-polarization response. The horn shape can be individually optimized for isolated horns or for horns in a feed array. The feed array environment can produce results that lead to a different optimized shape than the isolated horn. Lower off axis cross-polarization can result in improved efficiency and susceptibility to interference.
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: December 12, 2017
    Assignee: VIASAT, INC.
    Inventors: Donald L Runyon, Anders Jensen
  • Patent number: 9831549
    Abstract: Systems and methods for high power microwave combining and switching are provided. In at least one implementation a system includes a plurality of inputs, wherein there are M inputs in the plurality of inputs and a plurality of phase shifters, wherein there are N phase shifters in the plurality of phase shifters and N is a multiple of two times M, wherein a signal received through the plurality of inputs is divided and coupled to N/M phase shifters. The system further includes an N:N Butler matrix coupled between outputs of the N phase shifters in the plurality of phase shifters and a plurality of outputs.
    Type: Grant
    Filed: August 15, 2014
    Date of Patent: November 28, 2017
    Assignee: Honeywell International Inc.
    Inventor: Adam M. Kroening
  • Patent number: 9774076
    Abstract: A compact millimeter-wave radio system is comprised of an antenna body with reflector region and waveguide region all made from a single piece of material, and a radio receiver that is mounted on a substrate which is mechanically fixed to and held by the waveguide region. The system presents compact, relatively inexpensive, and relatively effective heat dissipation, solution for receiving and transmitting millimeter waves.
    Type: Grant
    Filed: June 20, 2012
    Date of Patent: September 26, 2017
    Assignee: Siklu Communication Ltd.
    Inventor: Yigal Leiba
  • Patent number: 9634399
    Abstract: An antenna system can impart orbital angular momentum (OAM) to an incident electromagnetic (EM) signal from a feed antenna. The antenna system can include a partial OAM antenna with a reflective surface that has only part of a full OAM shaped surface. The antenna system can thus reflect the incident EM signal as a partial OAM beam rather than a full OAM beam.
    Type: Grant
    Filed: November 12, 2013
    Date of Patent: April 25, 2017
    Assignee: L-3 Communications Corp.
    Inventors: Johnny M. Harris, Osama S. Haddadin, Zachary C. Bagley, Brandon G. Walsh, Jonathan C. Landon
  • Patent number: 9537222
    Abstract: A method is provided for defining an antenna with weak sidelobes having at least two sources, in which the sources are regularly distributed and the reflectors have suitable shapes, obtained by the implementation of a specific algorithm, the reflectors being illuminated by sources composed of a single part. The obtained antenna will offer a gain close to 0 in the direction of the array lobes, so these will be as low as possible.
    Type: Grant
    Filed: December 22, 2014
    Date of Patent: January 3, 2017
    Assignee: THALES
    Inventors: Pierre Boutigny, Laurent Collin, Laurent Beguet
  • Patent number: 9513361
    Abstract: A system and related method is disclosed including a symmetrical array of Balanced Antipodal Vivaldi Antenna (BAVA) elements. Within the array a plurality of dual polarization sub-arrays comprised of individual BAVA elements oriented in a first polarization and individual BAVA elements oriented in a second polarization. The plurality of sub-arrays maintains low mutual coupling and cross polarization rejection between sub-arrays within the array and between elements within the sub-array. As a signal is received by each of the individual BAVA elements, signals from each first polarized BAVA element and each second polarized BAVA element of a sub-array are combined to produce a single signal of the first polarization and a single signal of the second polarization per sub-array. A DF processor receives the two signals and determines the angle of arrival of the signal. A communications link within the array sends and receives information and commands for array operation.
    Type: Grant
    Filed: April 26, 2013
    Date of Patent: December 6, 2016
    Assignee: Rockwell Collins, Inc.
    Inventors: M. Wajih A. Elsallal, James B. West
  • Patent number: 9496621
    Abstract: A large deployable reflector for an antenna suitable for being installed on board a satellite and provided with a support structure, a parabolic mirror carried by the support structure and a connection arm for mounting the support structure on the satellite; the support structure being a jointed reticulate structure that is able to assume a compact inoperative stowed configuration and an operative deployed configuration and is composed of ‘n’ elements articulated to form tetrahedrons having respective triangular bases, which are connected to each other at the axial ends of respective first sides and have respective external vertices, which are opposite to said respective first sides and, when the reflector is arranged in the deployed configuration, ideally lie on a cone tangent to the parabolic mirror.
    Type: Grant
    Filed: November 4, 2013
    Date of Patent: November 15, 2016
    Assignee: Thales Alenia Space Italia S.p.A. Con Unico Socio
    Inventors: Alberto Meschini, Riccardo Rigato, Davide Scarozza
  • Patent number: 9397820
    Abstract: Radio devices having separate transmission and reception reflectors for transmitting and receiving wireless signals that detect interference in a transmission channel and may be automatically or manually switch duplexing schemes when reflections, radar or other interference is detected. These devices typically include both a transmission antenna reflector and a receiving transmitter reflector, which may be connected or formed of a single housing, that are operatively coupled to radio circuitry for transmission and reception of wireless signals. Interference, and particularly reflected signals between the transmitter and receiver, are avoided by including a detector coupled to either (or both) reflectors that monitors the transmitting frequency channel; reflections and/or radar signals may be detected and may trigger switching (manual or automatic switching) to a different duplexing modes such as frequency-division duplexing (FDD), time-division duplexing (TDD), etc.
    Type: Grant
    Filed: January 31, 2014
    Date of Patent: July 19, 2016
    Assignee: Ubiquiti Networks, Inc.
    Inventors: Gary D. Schulz, Paul Odlyzko, Christopher Fay
  • Patent number: 9379457
    Abstract: A radome for a feed horn includes a cover and at least a protrusion having an elliptic protruding portion shaped as a part of a hollow ellipsoid and provided with a convex surface and a concave surface opposite to the convex surface. The radome is defined with a plurality of first and second cross-sections. Curves of the convex and the concave surfaces in the first cross-sections are different from those in the second cross-sections. The convex and concave surfaces are substantially perpendicular to an advancing direction of a co-polarization wave and unperpendicular to an advancing direction of a cross polarization wave. As a result, the radome can be so thick as to be easily manufactured and not easily damaged and enhance the performance of the feed horn covered by the radome in sending and receiving signals.
    Type: Grant
    Filed: April 3, 2014
    Date of Patent: June 28, 2016
    Assignee: PRIME ELECTRONICS AND SATELLITICS INCORPORATION
    Inventor: Li-Chun Shiue
  • Patent number: 9312606
    Abstract: An antenna device includes a reflector which forms an offset antenna with a portion of a rotational paraboloid being cut out, and a primary radiator which radiates a beam having an elliptical cone shape to an aperture plane of the reflector. A reflector contour of the aperture plane of the reflector is formed in an elliptical shape along an isolux line of an elliptical beam radiated from the primary radiator. Accordingly, a loss due to spillover of the reflector is compensated for in a space in which the reflector contour of the present embodiment protrudes from a general reflector contour having a virtual elliptical shape formed to be perpendicular to an axis of a beam incident on an aperture plane of the reflector. In a space in which the general reflector contour protrudes from the reflector contour of the present embodiment, degradation of illuminance efficiency of the reflector is compensated.
    Type: Grant
    Filed: July 17, 2012
    Date of Patent: April 12, 2016
    Assignee: NEC Corporation
    Inventor: Kosuke Tanabe
  • Publication number: 20150145741
    Abstract: An antenna system capable of achieving simultaneous transmit and receive (STAR.) operation over a wide bandwidth includes a ring array of TEM horn elements and a centrally located monocone or bicone antenna. The TEM horn elements each include a capacitive feed. The elements of the ring array are excited using a phasing scheme that results in signal cancellation, at the location of the central element. The ring array may serve as either the transmit antenna or the receive antenna.
    Type: Application
    Filed: September 11, 2014
    Publication date: May 28, 2015
    Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
    Inventors: William F. Moulder, Bradley T. Perry, Jeffrey S. Herd
  • Patent number: 9035839
    Abstract: Embodiments disclosed herein relate to diversity receive systems and methods. An antenna system may comprise a reflector and a plurality of feed antennas configured to receive a wireless signal from a common source with directional diversity. A receive system may comprise such antenna system in combination with a plurality of receivers and/or demodulators, and in combination with a combiner and/or controller.
    Type: Grant
    Filed: September 2, 2010
    Date of Patent: May 19, 2015
    Assignee: TROLL SYSTEMS CORPORATION
    Inventors: Julian Scott, Jeff Hopkins
  • Publication number: 20150084820
    Abstract: The antenna comprises main and sub reflectors, each of which being made with nonaxisymmetric curvilinear surfaces and having two planes of symmetry at the intersection. A feed is arranged between the main and sub reflectors and capable of illuminating, first, the sub-reflector and, through it, the main reflector to form plane wave front. The common focuses of the nonaxisymmetric curvilinear surfaces of the reflectors in all sections passing through the longitudinal axis Z of the antenna, is located at the portion Z0 of Z, wherein the length of said portion being restricted by limits Fmin?Z0?Fmax, where Fmin, Fmax are the minimum and maximum distances from the ends of the portion Z0 to the main reflector along Z. The length of Z0 satisfies the following relation; Fmin/Dmax?Zo/Dmax?Fmax/Dmax and 0.21?Zo/Dmax?0.47, 1>Dmin/Dmax>0.5, where Dmax and Dmin are the maximum and minimum transverse sizes of the main reflector aperture.
    Type: Application
    Filed: March 22, 2013
    Publication date: March 26, 2015
    Inventors: Jiho Ahn, Elena V. Frolova
  • Publication number: 20140354499
    Abstract: A multi-beam former comprises: two stages connected together and intended to synthesize beams focused along two directions in space; each stage comprises at least two multi-layer plane structures, superposed one above the other; each multi-layer structure comprises an internal reflector, at least two first internal sources disposed in front of the internal reflector and linked to two input/output ports aligned along an axis, at least two second internal sources disposed in a focal plane of the internal reflector and linked to two second input/output ports aligned along an axis perpendicular to the axis; the two second internal sources of the same multi-layer structure of the first stage are respectively linked to two first internal sources of two different multi-layer structures of the second stage.
    Type: Application
    Filed: January 25, 2013
    Publication date: December 4, 2014
    Inventors: Hervé Legay, Ronan Sauleau, Mauro Ettorre
  • Patent number: 8878743
    Abstract: Stepped radio frequency (RF) reflector antennas are disclosed in which an inner RF reflector is disposed in a central opening of at one or more annular RF reflectors. The RF reflecting surface of the inner RF reflector and the RF reflecting surface(s) of the one or more annular RF reflectors can be shaped and positioned relative to each other to have different focal lengths but nevertheless reflect an RF signal to the same focal plane. The depth of the inventive reflector antenna system can be less than the depth of prior art reflector antennas with a comparable RF aperture.
    Type: Grant
    Filed: June 28, 2012
    Date of Patent: November 4, 2014
    Assignee: L-3 Communications Corp.
    Inventors: Alan M. Buchanan, Trevis D. Anderson, Douglas H. Ulmer, Jeffrey J. McGill, Scott M. Lyon, Rory K. Sorensen, Neil K. Harker
  • Patent number: 8780000
    Abstract: A high-throughput multi-beam telecommunication antenna is configured to cover a geographical area from a geostationary orbit. It comprises a single reflector and a feed block configured so that each elementary feed is able to generate a different unique beam, the angular separation of any two adjacent primary beams is substantially equal to the angular separation of any two adjacent secondary beams, and the spillover energy losses associated with each source are between 3 and 10 dB, preferably between 3 and 7.5 dB.
    Type: Grant
    Filed: September 9, 2011
    Date of Patent: July 15, 2014
    Assignee: Centre National d'Etudes Spatiales
    Inventors: Baptiste Palacin, Xavier Deplancq
  • Patent number: 8743004
    Abstract: A feed assembly for a parabolic dish reflector is described. The feed assembly includes a waveguide cavity locatable at the focal point, or any other desired off-boresight location corresponding point, of the parabolic dish, at least one first radiating element optimized for operation at a first frequency band and provided on a top surface of the waveguide cavity, and a plurality of second radiating elements each optimized for operation at a second band of frequencies and provided on the top surface of the waveguide cavity.
    Type: Grant
    Filed: December 14, 2009
    Date of Patent: June 3, 2014
    Inventor: Dedi David Haziza
  • Patent number: 8698683
    Abstract: A dual polarized reflector antenna assembly, provided with a reflector dish coupled to a feed hub with a feed port there through; a transceiver support bracket coupled to a backside of the feed hub; a circular to square waveguide transition coupled to the feed port; a square waveguide coupled to the circular to square waveguide transition; an OMT coupled to the square waveguide; the OMT provided with an OMT intersection between a square waveguide and a pair of rectangular waveguides oriented at ninety degrees to one another, an output port of each rectangular waveguide arranged normal to a longitudinal axis of the dual polarized reflector antenna assembly. Alternatively, a circular waveguide may be applied between the feed port and the circular to square waveguide transition, eliminating the square waveguide, or the rectangular waveguides may be extended longitudinally, also eliminating the square waveguide.
    Type: Grant
    Filed: November 10, 2010
    Date of Patent: April 15, 2014
    Assignee: Andrew LLC
    Inventors: Junaid Syed, Keith Tappin, Allan Tasker, Gary MacLeod, Wenjie Zhu, Haidong Chen
  • Patent number: 8674893
    Abstract: An antenna feed assembly is provided which includes at least two elongate feed chains lying adjacent one another. Each feed chain is adapted to transmit or receive electromagnetic radiation between itself and the antenna along a longitudinal feed axis thereof via a transmit/receive element. The feed chains are held in fixed lateral relationship to one another by first and second mountings spaced apart axially of the feed chains. The transmit/receive elements extend axially from the first mounting towards the antenna and the second mounting is positioned on a side of the first mounting remote from the antenna. The first mounting has a lower coefficient of thermal expansion in the lateral direction than the second mounting whereby translational movement of each transmit/receive element in the lateral direction owing to temperature change of the assembly will be reduced.
    Type: Grant
    Filed: February 27, 2009
    Date of Patent: March 18, 2014
    Assignee: Astrium Limited
    Inventor: Timothy John Ecclestone
  • Publication number: 20140071010
    Abstract: In the field of satellite communications and more particularly to a multi-beam antenna system for the coverage of a given geographical region broken down into several spots on the ground, a radio frequency feed block comprises several radio frequency chains intended to transmit or to receive an electromagnetic wave in the direction of a reflector and waveguides connected to outputs of the chains, characterized in that it comprises a plate inside which the waveguides are made, and to which the radio frequency chains are fastened. A satellite comprising a feed block is also provided.
    Type: Application
    Filed: September 6, 2013
    Publication date: March 13, 2014
    Applicant: THALES
    Inventors: Stephane POUYEZ, Michael POTIER, Jean-Luc BOUGUEREAU, Pierre BOSSHARD, Alain GERARD
  • Patent number: 8649742
    Abstract: A radio communication system according to the present invention includes a scatterer configured to reflect, refract, or transmit a radio wave radiated primarily from a transmission side apparatus to radiate the radio wave secondarily to a desired area and a metamaterial is used for the scatterer.
    Type: Grant
    Filed: November 28, 2008
    Date of Patent: February 11, 2014
    Assignee: NTT DoCoMo, Inc.
    Inventors: Tamami Maruyama, Shinji Uebayashi, Tatsuo Furuno
  • Patent number: 8593362
    Abstract: A multi band antenna feed, for supporting multiple frequency bands, is coupled to a reflector and includes a cylindrical core waveguide and at least three coaxial cylinders, encircling said cylindrical core waveguide and forming at least three coaxial waveguides, bounded between pairs of consecutive coaxial cylinders. The cylindrical core waveguide and the at least three coaxial waveguides provide a pair of sum and difference radiation patterns, for each frequency band: a C-band, an S-band and an L-band.
    Type: Grant
    Filed: October 25, 2010
    Date of Patent: November 26, 2013
    Assignee: Orbit Communication System Ltd.
    Inventors: Donald F. Shea, Ofir Nahshon, Joe Pein, Izik Krepner, George R. Blake
  • Patent number: 8583360
    Abstract: A navigation system determines its usage mode. In some embodiments, a method comprises determining a usage mode of a navigation system based on at least one of an acceleration indicator, a speed indicator, and a magnet sensor. The usage mode is at least one of a pedestrian mode, a vehicular mode, an aerial mode, a train mode, and a marine mode. The method further comprises configuring a navigation subsystem based on the usage mode.
    Type: Grant
    Filed: February 15, 2011
    Date of Patent: November 12, 2013
    Assignee: Texas Instruments Incorporated
    Inventors: Deric W. Waters, Tarkesh Pande
  • Patent number: 8552917
    Abstract: A method and system are disclosed for wide angle multibeam antennas. The method and system involve a multibeam antenna system for generating high performance multiple spot beams. In one or more embodiments, the multibeam antenna system includes an oversized antenna reflector and a plurality of antenna feeds. The oversized antenna reflector has its surface shape optimized from a normal parabolic shape in order to broaden and shape the reflected spot beams to improve antenna performance. In addition, the diameter of the oversized antenna reflector is greater than ((100*?)/?), where ? is the wavelength in inches and ? is the beam to beam spacing in degrees. In some embodiments, the ratio of the focal length of the oversized antenna reflector to the diameter of the oversized antenna reflector (F/D) is greater than 0.7. In at least one embodiment, the system further includes an antenna sub-reflector.
    Type: Grant
    Filed: April 28, 2010
    Date of Patent: October 8, 2013
    Assignee: The Boeing Company
    Inventors: Daniel F. Mathews, Parthasarathy Ramanujam, Robert B. Mathews, Thomas M. Hikido, Louis R. Fermelia, Gary J. Gawlas
  • Patent number: 8462067
    Abstract: An apparatus for an antenna system comprising one or more blades for splitting the electromagnetic field received by an antenna into a plurality of sections corresponding to separate beams and redirecting said plurality of sections for detection by a plurality of detectors. The apparatus may comprise a plurality of blades for splitting the field into successively smaller and smaller portions. The plurality of detectors can be positioned outside the focal region of the antenna system. The apparatus may further comprise focusing means for focusing the sections of the field onto another blade or a detector. There is also provided an antenna system comprising a plurality of feed horns for producing a plurality of beams; and a plurality of elements for redirecting said beams towards a focal region of the antenna system so as to form a group of closely packed beams for transmission by the antenna system.
    Type: Grant
    Filed: September 11, 2009
    Date of Patent: June 11, 2013
    Assignee: Astrium Limited
    Inventor: Graham Maxwell-Cox
  • Publication number: 20120182195
    Abstract: The present invention provides an improved single antenna system that allows reception of RF energy at multiple frequencies. In one embodiment, the antenna is implemented as a multi-beam, multi-feed antenna having a primary reflector fitted with a dual mode feed tube and a switchable LNB that supports both Ka band and Ku band reception. In another embodiment, the antenna is implemented as a multi-beam, multi-feed antenna having a primary reflector fitted with a feed horn and a LNB that is capable of providing movement such that the feed horn with the LNB is at a focal point with the primary reflector for both Ka and Ku band reception. In another embodiment, the antennae is implemented as a multi-beam, multi-feed antenna having a primary reflected fitted with a feed horn assembly and a switchable LNB that supports both Ka band and Ku band reception.
    Type: Application
    Filed: March 14, 2012
    Publication date: July 19, 2012
    Inventors: Thomas D. Monte, Bosui Liu, Cory Z. Bousquet
  • Patent number: 8169356
    Abstract: A motion sensing method and apparatus includes a housing enclosing a microwave motion sensor including an antenna, and a security system. The antenna may be a patch antenna which includes microwave radiating elements for transmitting and receiving a microwave signal for sensing motion. A reflector is attached to the housing and positioned above the antenna for downward shaping of the microwave signal. The microwave radiating elements together with the reflector provide a radiation pattern where a main beam is transmitted in a direction orthogonal to a surface of the antenna and a sided lobe is transmitted downward in amplitude below the microwave motion sensor. An alarm circuit indicates when the microwave sensor detects motion in armed mode, and a masking circuit indicates when the microwave sensor detects motion in a mask zone when the security system is unarmed. A second sensor may be positioned beneath the microwave motion sensor.
    Type: Grant
    Filed: December 31, 2007
    Date of Patent: May 1, 2012
    Assignee: Honeywell International Inc.
    Inventors: Xiaodong Wu, James N. Helland, Leslie K. Green
  • Patent number: 8149174
    Abstract: An antenna system includes plural antennas. Each antenna is different than every other antenna. Each antenna is characterized by a principal plane. A principal plane of a first antenna is oblique to a principal plane of a second antenna. The first antenna includes a first insulating substrate extending in the principal plane of the first antenna. The first antenna further includes a first radiating element and a connected first conductor and includes a second radiating element and a connected second conductor. The first antenna further includes a coupling conductor coupling the second radiating element and the first conductor. The first antenna further includes a first coupler having a first signal conductor and a second signal conductor. The first signal conductor is coupled to the second conductor, and the second signal conductor is coupled to the first radiating element.
    Type: Grant
    Filed: May 6, 2010
    Date of Patent: April 3, 2012
    Assignee: Kaonetics Technologies, Inc.
    Inventor: James Cornwell
  • Publication number: 20120019424
    Abstract: A dual polarized reflector antenna assembly, provided with a reflector dish coupled to a feed hub with a feed port there through; a transceiver support bracket coupled to a backside of the feed hub; a circular to square waveguide transition coupled to the feed port; a square waveguide coupled to the circular to square waveguide transition; an OMT coupled to the square waveguide; the OMT provided with an OMT intersection between a square waveguide and a pair of rectangular waveguides oriented at ninety degrees to one another, an output port of each rectangular waveguide arranged normal to a longitudinal axis of the dual polarized reflector antenna assembly. Alternatively, a circular waveguide may be applied between the feed port and the circular to square waveguide transition, eliminating the square waveguide, or the rectangular waveguides may be extended longitudinally, also eliminating the square waveguide.
    Type: Application
    Filed: November 10, 2010
    Publication date: January 26, 2012
    Applicant: ANDREW LLC
    Inventors: Junaid Syed, Keith Tappin, Allan Tasker, Gary Macleod, Wenjie Zhu, Haidong Chen
  • Publication number: 20120013516
    Abstract: The inventive device enables to ensure its compactness, that is, a minimum thickness at a high antenna efficiency of an antenna in the frequency range 10.7-12.75 GHz. This technical effect can be achieved because the antenna comprises a main reflector (1), at least two feeds (2) and at least two sub-reflectors (3). Each sub-reflector is provided with such a shape of its external surface that ensures reflection of the feed directional pattern central beam to the edge of the main reflector and reflection of a lateral beam to the central area of the main reflector, the sub-reflector adjoining surfaces being truncated.
    Type: Application
    Filed: November 11, 2009
    Publication date: January 19, 2012
    Inventors: Jiho Ahn, Alexander Venetskiy, Elena Frolova
  • Publication number: 20110291903
    Abstract: A multi band antenna feed, for supporting multiple frequency bands, is coupled to a reflector and includes a cylindrical core waveguide and at least three coaxial cylinders, encircling said cylindrical core waveguide and forming at least three coaxial waveguides, bounded between pairs of consecutive coaxial cylinders. The cylindrical core waveguide and the at least three coaxial waveguides provide a pair of sum and difference radiation patterns, for each frequency band: a C-band, an S-band and an L-band.
    Type: Application
    Filed: October 25, 2010
    Publication date: December 1, 2011
    Applicant: Orbit Communication System Ltd.
    Inventors: Donald SHEA, Ofir NAHSHON, Joe PEIN, Izik KREPNER, George BLAKE
  • Publication number: 20110267251
    Abstract: A method and system are disclosed for wide angle multibeam antennas. The method and system involve a multibeam antenna system for generating high performance multiple spot beams. In one or more embodiments, the multibeam antenna system includes an oversized antenna reflector and a plurality of antenna feeds. The oversized antenna reflector has its surface shape optimized from a normal parabolic shape in order to broaden and shape the reflected spot beams to improve antenna performance. In addition, the diameter of the oversized antenna reflector is greater than ((100*?)/?), where ? is the wavelength in inches and ? is the beam to beam spacing in degrees. In some embodiments, the ratio of the focal length of the oversized antenna reflector to the diameter of the oversized antenna reflector (F/D) is greater than 0.7. In at least one embodiment, the system further includes an antenna sub-reflector.
    Type: Application
    Filed: April 28, 2010
    Publication date: November 3, 2011
    Applicant: THE BOEING COMPANY
    Inventors: Daniel F. Mathews, Parthasarathy Ramanujam, Robert B. Mathews, Thomas M. Hikido, Louis R. Fermelia, Gary J. Gawlas
  • Patent number: 8022880
    Abstract: A coupling device for transmitting a wireless signal is provided. The coupling device includes a substrate, a ground layer and a feed conductor. The substrate includes a first surface and a second surface opposite to the first surface. The ground layer is disposed on the second surface having a circular opening, and the circular opening has an opening edge and an opening center. The feed conductor extends on the first surface, including a conductive portion and a feed portion connected thereto. The feed portion corresponds to the circular opening, wherein the opening center is on a base line, a radial line is formed between the opening center and the opening edge, a radial distance is formed on the radial line between the opening edge and the feed portion, and a length of the radial distance varies with an angle between the radial line and the base line.
    Type: Grant
    Filed: November 6, 2008
    Date of Patent: September 20, 2011
    Assignee: National Taiwan University
    Inventors: Kuo-Fong Hung, Yi-Cheng Lin
  • Patent number: 7982687
    Abstract: Methods, systems, and apparatuses for receiving signals from communications satellites are disclosed.
    Type: Grant
    Filed: October 2, 2008
    Date of Patent: July 19, 2011
    Assignee: The DIRECTV Group, Inc.
    Inventor: Joseph Santoru
  • Publication number: 20110018758
    Abstract: An antenna feed assembly is provided which includes at least two elongate feed chains lying adjacent one another. Each feed chain is adapted to transmit or receive electromagnetic radiation between itself and the antenna along a longitudinal feed axis thereof via a transmit/receive element. The feed chains are held in fixed lateral relationship to one another by first and second mountings spaced apart axially of the feed chains. The transmit/receive elements extend axially from the first mounting towards the antenna and the second mounting is positioned on a side of the first mounting remote from the antenna. The first mounting has a lower coefficient of thermal expansion in the lateral direction than the second mounting whereby translational movement of each transmit/receive element in the lateral direction owing to temperature change of the assembly will be reduced.
    Type: Application
    Filed: February 27, 2009
    Publication date: January 27, 2011
    Applicant: ASTRIUM LIMITED
    Inventor: Timothy John Ecclestone
  • Publication number: 20110012801
    Abstract: The present invention provides an improved single antenna system that allows reception of RF energy at multiple frequencies. In one embodiment, the antenna is implemented as a multi-beam, multi-feed antenna having a primary reflector fitted with a dual mode feed tube and a switchable LNB that supports both Ka band and Ku band reception. In another embodiment, the antenna is implemented as a multi-beam, multi-feed antenna having a primary reflector fitted with a feed horn and a LNB that is capable of providing movement such that the feed horn with the LNB is at a focal point with the primary reflector for both Ka and Ku band reception. In another embodiment, the antennae is implemented as a multi-beam, multi-feed antenna having a primary reflected fitted with a feed horn assembly and a switchable LNB that supports both Ka band and Ku band reception.
    Type: Application
    Filed: July 20, 2009
    Publication date: January 20, 2011
    Inventors: Thomas D. Monte, Bosui Liu, Cory Z. Bousquet
  • Patent number: 7868840
    Abstract: An antenna system includes a reflector having a modified-paraboloid shape; and a multi-beam, multi-band feed array located at a focal point of the reflector so that the antenna system forms a multiple congruent beams that are contiguous. The system has a single reflector with non-frequency selective surface. The reflector is sized to produce a required beam size at K-band frequencies and is oversized at EHF-band frequencies. The synthesized reflector surface is moderately shaped and disproportionately broadens EHF-band and Ka-band beams compared to K-band beams. The synthesized reflector surface forms multiple beams each having a 0.5-degree diameter at K-band, Ka-band, and EHF band. The multi-beam, multi-band feed array includes a number of high-efficiency, multi-mode circular horns that operate in focused mode at K-band and defocused mode at Ka-band and EHF-band by employing “frequency-dependent” design for the horns.
    Type: Grant
    Filed: June 30, 2008
    Date of Patent: January 11, 2011
    Assignee: The Boeing Company
    Inventors: Sudhakar K. Rao, David Bressler
  • Publication number: 20100238082
    Abstract: The present invention provides an improved antenna system on moving platform that is in communication with multiple satellites for simultaneous reception and transmission of RF energy at multiple frequencies. The antenna is implemented as a multi-beam, multi-band antenna having a main reflector with multiple feed horns and a sub-reflector having a reflective surface defining an image focus for a Ka band frequency signal and a prime focus for a Ku band frequency signal.
    Type: Application
    Filed: March 17, 2010
    Publication date: September 23, 2010
    Inventors: Martin Arend Kits van Heyningen, Thomas D. Monte, Robert Balog
  • Publication number: 20100149061
    Abstract: A feed assembly for a parabolic dish reflector is described. The feed assembly includes a waveguide cavity locatable at the focal point, or any other desired off-boresight location corresponding point, of the parabolic dish, at least one first radiating element optimized for operation at a first frequency band and provided on a top surface of the waveguide cavity, and a plurality of second radiating elements each optimized for operation at a second band of frequencies and provided on the top surface of the waveguide cavity.
    Type: Application
    Filed: December 14, 2009
    Publication date: June 17, 2010
    Inventor: Dedi David HAZIZA
  • Patent number: 7737904
    Abstract: An antenna system for transmitting and/or receiving radio frequency (RF) signals in multiple frequency bands includes a horn antenna and a feed network. The horn antenna may transmit and/or receive RF signals in multiple frequency bands that are spread over more than an octave bandwidth with at least a 2.44-to-1 bandwidth ratio. The horn antenna includes a throat, an aperture, and an interior surface. The feed network includes a first waveguide section, a first junction, one or more first filters, and a first step-down waveguide section. The first waveguide section can provide a matching network and transmit and/or receive the RF signals in the multiple frequency bands. The first junction can transmit and/or receive the RF signals in first selected band(s) of the multiple frequency bands. The first step-down waveguide section may transmit and/or receive the RF signals in second selected band(s) of the multiple frequency bands.
    Type: Grant
    Filed: June 11, 2008
    Date of Patent: June 15, 2010
    Assignee: Lockheed Martin Corporation
    Inventors: Sudhakar K. Rao, Chris G. Baran, Chih-Chien Hsu, Surjit S. Dhillon
  • Patent number: 7714792
    Abstract: An array antenna with reflector(s) (AR) comprises i) an array (RS) of at least two feeds (S1-S5), including a central feed (S1), arranged and positioned so as to transmit and/or receive beams (F1-F5) in chosen directions, ii) beam-forming means responsible for controlling the amplitude and phase of each of the feeds by means of amplitude/phase laws applied to their ports and providing an appropriate amplification level, in order for each feed (S1-S5) to transmit a chosen radiation pattern (forming a beam and comprising a main lobe) intended to cover a chosen zone (Z1-Z5), and iii) at least one reflector (RC) provided with a surface (SU) specifically for reflecting the beams delivered by the feeds and/or intended for the latter, and shaped tree-dimensionally so as to reflect the beam delivered by each feed (S1-S5) by spreading its energy such that it covers the chosen associated zone, that the main lobe of the radiation pattern associated with the central feed (S1) defines a primary coverage (CP) fully includi
    Type: Grant
    Filed: July 11, 2006
    Date of Patent: May 11, 2010
    Assignee: Thales
    Inventors: Michel Leveque, Eric Vourch, Jacques Maurel
  • Patent number: 7710340
    Abstract: An antenna system for generating and configuring at least one defocused beam is provided. The antenna system includes a reflector having a focal plane and a non-parabolic curvature for forming the at least one defocused beam, and a plurality of feed antennas that illuminate the reflector. Each feed antenna is disposed in the focal plane of the reflector. The antenna system further includes at least one incoming signal dividing network that divides at least one incoming signal into a plurality of sub-signals, each corresponding to one of the feed antennas, a plurality of variable phase shifters, each receiving one of the sub-signals from the incoming signal dividing network and phase shifting the sub-signal to generate a corresponding phase-shifted sub-signal, and a plurality of fixed-amplitude amplifiers, at least one corresponding to each of the feed antennas.
    Type: Grant
    Filed: July 5, 2006
    Date of Patent: May 4, 2010
    Assignee: Lockheed Martin Corporation
    Inventors: Sudhakar K. Rao, Stephen R. Peck, Minh Tang, Jim Wang, David M. Brown
  • Patent number: 7675473
    Abstract: Contamination at the exciter of a parabolic antenna can lead to impaired signal quality, or even system downtime. A parabolic antenna is described which in addition to a parabolic reflector and an exciter has a rinsing device, which is configured so as to rinse and clean the exciter with rinsing agent or protect it from contaminants. Herein, the rinsing agent is injected, dropped, or else blown from a rinsing outlet in an outlet member at the parabolic reflector onto the exciter. Mounting the rinsing outlet directly to the parabolic reflector allows for the exciter to be cleaned from the parabolic reflector.
    Type: Grant
    Filed: October 12, 2006
    Date of Patent: March 9, 2010
    Assignee: Vega Grieshaber KG
    Inventors: Klaus Kienzle, Fritz Lenk
  • Publication number: 20100013727
    Abstract: There is disclosed an LNB alignment device having a main body that removably attaches to a support arm of a satellite dish and has a plurality of mounting holes or rectangular sleeves configured to receive a plurality of low-noise block converters with feed horns (LNBs). The proximal and distal ends of the bar curve inwardly toward the satellite dish and curve slightly upward in a manner that the feed horns of LNBs outside of the focal axis are disposed higher and closer to the center of the reflector to improve signal quality.
    Type: Application
    Filed: July 16, 2009
    Publication date: January 21, 2010
    Inventors: Daniel Pifer, Royce Pifer
  • Publication number: 20090309801
    Abstract: An antenna system for transmitting and/or receiving radio frequency (RF) signals in multiple frequency bands includes a horn antenna and a feed network. The horn antenna may transmit and/or receive RF signals in multiple frequency bands that are spread over more than an octave bandwidth with at least a 2.44-to-1 bandwidth ratio. The horn antenna includes a throat, an aperture, and an interior surface. The feed network includes a first waveguide section, a first junction, one or more first filters, and a first step-down waveguide section. The first waveguide section can provide a matching network and transmit and/or receive the RF signals in the multiple frequency bands. The first junction can transmit and/or receive the RF signals in first selected band(s) of the multiple frequency bands. The first step-down waveguide section may transmit and/or receive the RF signals in second selected band(s) of the multiple frequency bands.
    Type: Application
    Filed: June 11, 2008
    Publication date: December 17, 2009
    Applicant: Lockheed Martin Corporation
    Inventors: Sudhakar K. RAO, Chris G. Baran, Chih-Chien Hsu, Surjit S. Dhillon