Including Polarized Signal Communication Transmitter Or Receiver Patents (Class 342/361)
  • Patent number: 10530458
    Abstract: Disclosed are a communication method, a terminal and a communication system, which are applied between a terminal and a base station in a line of sight communication environment. A first polarizing antenna having the same polarity as that of a second polarizing antenna of a base station is set on a terminal, wherein the first polarizing antenna includes a first antenna component and a second antenna component having different polarities; and a first signal and a second signal which are sent by the base station via the second polarizing antenna are received via the first polarizing antenna.
    Type: Grant
    Filed: June 15, 2016
    Date of Patent: January 7, 2020
    Assignee: ZTE CORPORATION
    Inventors: Xi Chen, Jun Qin
  • Patent number: 10378893
    Abstract: Determining the physical location of wirelessly connected devices within a network can provide a number of security benefits. However, manually determining and configuring the physical location of each device within a system can be burdensome. To ease this burden, devices within a network are equipped with a location detection sensor that is capable of automatically determining a device's location in relation to other devices within the network. A location detection sensor (“sensor”) may include a light source, a light direction sensor, a rangefinder, and a radio or wireless network interface. Two location detection sensors can perform a location detection process to determine their relative locations to each other, such as the distance between them. As more sensors are added to a network, a sensor management system uses the relative locations determined by the sensors to map the sensors to a physical space layout.
    Type: Grant
    Filed: July 29, 2016
    Date of Patent: August 13, 2019
    Assignee: CA, Inc.
    Inventor: Serguei Mankovskii
  • Patent number: 10305199
    Abstract: In an exemplary embodiment, a phased array antenna comprises multiple subcircuits in communication with multiple radiating elements. The radio frequency signals are independently adjusted for both polarization control and beam steering. In a receive embodiment, multiple RF signals of various polarizations are received and combined into at least one receive beam output. In a transmit embodiment, at least one transmit beam input is divided and transmitted through multiple radiating elements, with the transmitted beams having various polarizations. In an exemplary embodiment, the phased array antenna provides multi-beam formation over multiple operating frequency bands. The wideband nature of the active components allows for operation over multiple frequency bands simultaneously.
    Type: Grant
    Filed: November 6, 2017
    Date of Patent: May 28, 2019
    Assignee: VIASAT, INC.
    Inventors: David W. Corman, Rob Zienkewicz, David Saunders
  • Patent number: 10305200
    Abstract: A wireless communication system includes a plurality of wireless devices that communicate with each other. Each of the wireless devices includes a transmission unit configured to transmit a carrier of a fixed strength with polarization waves thereof rotated to a different one of the wireless devices using two antennae spatially orthogonal to each other, a reception unit configured to receive a carrier transmitted from the transmission unit of the different wireless device, and a timing detection unit configured to detect a timing at which the polarization waves of the carrier received by the reception unit within a period of rotation indicates a maximum strength. The transmission unit performs transmission or reception of a specific information signal using the carrier based on the timing detected by the timing detection unit.
    Type: Grant
    Filed: July 13, 2016
    Date of Patent: May 28, 2019
    Assignee: Hitachi, Ltd.
    Inventor: Ken Takei
  • Patent number: 10305180
    Abstract: A direct-to-home satellite outdoor unit may comprise a reflector, a support structure, circuitry, and an array of antenna elements mounted to the support structure such that energy of a plurality of satellite beams is reflected by the reflector onto the array where the energy is converted to a plurality of first signals. The circuitry may be operable to process the first signals to concurrently generate a plurality of second signals, each of the second signals corresponding to a respective one of the plurality of satellite beams. The circuitry may be operable to process one or more of the second signals for outputting content carried in the one or more of the second signals onto a link to an indoor unit.
    Type: Grant
    Filed: January 16, 2014
    Date of Patent: May 28, 2019
    Assignee: Maxlinear, Inc.
    Inventor: Curtis Ling
  • Patent number: 10153824
    Abstract: Provided is a wireless communication system that achieves high-reliability communication between a transmitter and a receiver.
    Type: Grant
    Filed: November 13, 2014
    Date of Patent: December 11, 2018
    Assignee: Hitachi, Ltd.
    Inventor: Ken Takei
  • Patent number: 10135124
    Abstract: An antenna assembly includes: a base; a first rod coupled to the base; an outer frame coupled to the first rod, the outer frame being rotatable around the first rod; a first antenna having a first end coupled to a first position of an inner surface of the curvy frame, and a second end coupled to a second position of the inner surface of the outer frame, the first antenna being rotatable around a pivot extending from the first position to the second position; and a second antenna having a first end coupled to a third position of the inner surface of the outer frame, and a second end exposed to an inner space surrounded by the outer frame.
    Type: Grant
    Filed: November 1, 2017
    Date of Patent: November 20, 2018
    Assignee: Pinnacle Vista, LLC
    Inventor: Yu Tian
  • Patent number: 10094914
    Abstract: A method and system use the mutual coupling property of multiple antenna elements for measuring differences in propagation time among various signal paths involving antenna elements in a radio frequency transmit/receive system. The method and system alleviate the need for external test equipment by using the same hardware used in standard operation of the transmit/receive system for performing propagation time measurement through the generation, mutual coupling, and acquisition of a specially selected reference signal. In an embodiment involving calibration of various signal paths to realize matched propagation times, the signal energy returned through these various paths during standard system operation arrives for acquisition more closely coincident in time, increasing the instantaneous bandwidth of the system.
    Type: Grant
    Filed: September 15, 2016
    Date of Patent: October 9, 2018
    Assignee: RAYTHEON COMPANY
    Inventors: Eric N. Boe, William L. Lewis, John Fraschilla
  • Patent number: 10079634
    Abstract: A method (1100) for cross-polarization interference power suppression in dual-polarization radio communication systems includes: filtering (1101) a vertical polarization component (xV(n)) and a horizontal polarization component (xH(n)) of a received dual-polarization channel signal by a 2×2 channel weights matrix (507, 508); and determining (1102) the 2×2 channel weights matrix (507, 508) based on a minimum variance distortionless response criterion.
    Type: Grant
    Filed: July 22, 2016
    Date of Patent: September 18, 2018
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Vasily Anatolevich Khlebnikov, Yanxing Zeng, Vladimir Iosifovich Ivanov, Jianqiang Shen
  • Patent number: 10061344
    Abstract: A signal generator for producing periodic signals for a measuring apparatus of automation technology. The signals have sequential, discrete signal frequencies, which lie within a predetermined frequency range. A control- and/or computing unit, a clock signal producer are provided, wherein the clock signal producer provides a constant sampling frequency, which is greater than the maximum discrete signal frequency in the predetermined frequency range. A memory unit is provided, in which for each of the discrete signal frequencies the amplitude values of the corresponding periodic signals are stored or storable as a function of the sampling frequency. The control- and/or computing unit reads out the stored or storable amplitude values of the discrete frequencies successively with the sampling frequency of the clock from the memory unit and produces the periodic signals, or forwards for producing.
    Type: Grant
    Filed: June 2, 2014
    Date of Patent: August 28, 2018
    Assignee: ENDRESS + HAUSER GMBH + CO. KG
    Inventors: Stefan Rummele-Werner, Dietmar Fruhauf, Armin Wernet, Kaj Uppenkamp, Gerd Bechtel
  • Patent number: 10038469
    Abstract: Output from a plurality of radios is received at input ports of a combiner, combined and carried over a coaxial line to a receiver. A DC current is detected entering one of the input ports. The input port in which DC current was detected is assigned as a DC I/O port, and an identity of the assigned DC I/O port is wireless transmitted to the receiver. The receiver separates a DC current from the combined signals received over the coaxial transmission line. The receiver, based on the wireless transmitted identity of the assigned DC I/O port, routes separated DC current to a receiver I/O port corresponding to the identity of the assigned DC I/O port.
    Type: Grant
    Filed: March 23, 2017
    Date of Patent: July 31, 2018
    Assignee: Verizon Patent and Licensing Inc.
    Inventors: Nicholas James Cordaro, Pi-Yang Brian Liao
  • Patent number: 9998204
    Abstract: There is proposed a method of in-flight transmission of data recorded by a black box of an aircraft (1), the method comprising the emission (600) by the aircraft (1) of a radioelectric beam (F1, F2) transporting said data according to a first directivity (D1) if at least one predetermined parameter does not indicate a critical state of the aircraft (1), and according to a second directivity (D2) different from the first directivity (D1) if the predetermined parameter indicates a critical state of the aircraft (1).
    Type: Grant
    Filed: March 31, 2015
    Date of Patent: June 12, 2018
    Assignee: SAFRAN ELECTRONICS & DEFENSE
    Inventors: Alain Chiodini, Denis Delville, Philippe Riviere
  • Patent number: 9998157
    Abstract: Systems and methods are presented for increasing throughput between mobile transmitters/receivers (e.g., between an Unmanned Aerial Vehicle and a ground station) using orthogonally polarized transmission channels. The system may first calibrate the receiver and transmitter antenna pairs using pilot signals and then may update look up tables for feedforward correction. The system may decouple and predict the cross polarization interference due to relative dynamic movement between the transmitter and the receiver. The system may perform a closed-loop suboptimal estimation to generate refined corrections by minimizing a difference between a training vector and a pilot-signal feedback. Cross-polarization discrimination between the transmission and reception antennas may then be Cancelled to improve signal to noise and interference ratio and performance of the system.
    Type: Grant
    Filed: November 14, 2016
    Date of Patent: June 12, 2018
    Assignee: Facebook, Inc.
    Inventor: Hong Gan
  • Patent number: 9966664
    Abstract: Multi-band antenna systems for communication systems are disclosed. An antenna system includes at least one low band dipole radiating element for radiating RF energy in a low frequency range and at least one group or column of high band dipole radiating assemblies for radiating RF energy in a high frequency range. The low band dipole radiating element may be constructed to provide improved control beam width stability of the high band dipole radiating assemblies and improved cross-polarization performance in the low frequency range. The high band dipole radiating assemblies include high band dipole radiating elements and shrouds surrounding the high band dipole radiating elements. The shrouds are configured to improve the beam width stability and cross-polarization of the high band dipole radiating elements, improve isolation between the high band dipole radiating elements and to shift resonance of the high band dipole radiating assemblies below the low frequency range.
    Type: Grant
    Filed: November 5, 2012
    Date of Patent: May 8, 2018
    Assignee: Alcatel-Lucent Shanghai Bell Co., Ltd.
    Inventors: Raja Reddy Katipally, Aaron T. Rose
  • Patent number: 9893788
    Abstract: The present invention relates to a communication node with at least one antenna arrangement having four first antenna devices with corresponding antenna port pairs. Each pair of antenna ports comprising a corresponding first antenna port for a first polarization and second antenna port for a second orthogonal polarization. A beamforming arrangement comprises four beam ports and is configured to apply beam weights to each one of the antenna ports. The present invention also relates to a corresponding method.
    Type: Grant
    Filed: December 4, 2013
    Date of Patent: February 13, 2018
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Sven Petersson, Mona Hashemi
  • Patent number: 9882285
    Abstract: A dielectric hollow antenna apparatus includes a hollow inside tapered rod (e.g., a waveguide) with a flat section and a cap. The antenna further includes a feed through section, a feed pin, and a metal flange. A low loss dielectric material fills the hollow rod that protrudes beyond the metal waveguide to form a radiating element. The radiating element is designed in such a way to maximize radiation and minimize reflections over the antenna bandwidth. The feed through section reduces internal reflection and the waveguide is designed to include a rectangular waveguide that support a propagation (TE01) mode and the waveguide then transitions to a circular waveguide that supports another propagation (TE11) mode. The antennas can be employed for radar level gauging and withstand high temperature and possesses a small diameter that permits the antenna to fit in small tank nozzles.
    Type: Grant
    Filed: April 24, 2014
    Date of Patent: January 30, 2018
    Assignee: Honeywell International Inc.
    Inventor: Fouad Nusseibeh
  • Patent number: 9864881
    Abstract: A distance between at least one antenna of an interrogation system and a transponder, such as an RFID tag, is determined based on derivatives with respect to frequency of the phase and the signal strength of responses transmitted by the transponder and received at the at least one antenna. The derivatives of the phase and the signal strength facilitate compensating for sources of multipath interference. Determining changes in distance may further facilitate determining location, speed, or bearing of the transponder by the interrogation system.
    Type: Grant
    Filed: December 7, 2015
    Date of Patent: January 9, 2018
    Assignee: INTERMEC IP CORP.
    Inventor: Pavel Nikitin
  • Patent number: 9843107
    Abstract: In an exemplary embodiment, a phased array antenna comprises multiple subcircuits in communication with multiple radiating elements. The radio frequency signals are independently adjusted for both polarization control and beam steering. In a receive embodiment, multiple RF signals of various polarizations are received and combined into at least one receive beam output. In a transmit embodiment, at least one transmit beam input is divided and transmitted through multiple radiating elements, with the transmitted beams having various polarizations. In an exemplary embodiment, the phased array antenna provides multi-beam formation over multiple operating frequency bands. The wideband nature of the active components allows for operation over multiple frequency bands simultaneously.
    Type: Grant
    Filed: July 15, 2016
    Date of Patent: December 12, 2017
    Assignee: VIASAT, INC.
    Inventors: David W. Corman, Rob Zienkewicz, David Saunders
  • Patent number: 9826282
    Abstract: A reception apparatus includes a plurality of reception units each corresponding to a communication path among a plurality of communication paths, and a generation unit configured to, in a case where the plurality of reception units receives a first data unit and a second data unit, generate the first data unit at a first time corresponding to a time at which the plurality of reception units has completed reception of data forming the first data unit, and generate the second data unit at a second time corresponding to a time at which the plurality of reception units has completed reception of data forming the second data unit.
    Type: Grant
    Filed: June 30, 2014
    Date of Patent: November 21, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventor: Shun Sugimoto
  • Patent number: 9806782
    Abstract: A phase shift circuitry includes: a signal generation circuitry that receives an input signal, and outputs four signals different in phase from each other by 90 degrees based on the input signal, the four signals includes a first signal and a second signal; four variable amplifier circuitry that each includes a transistor, and amplify the four signals individually, with amplification factors based on control voltages supplied to gates of the transistors, the four variable amplifier circuitry include a first amplifier amplifies the first signal by a first control voltage and a second amplifier amplifies the second signal by a second control voltage; a synthetic circuitry that synthesizes output signals of the four variable amplifier circuitry, and outputs a synthesized signal; and a control circuitry supplies voltages, that are equal to or higher than the gate threshold value, to the first amplifier and the second amplifier.
    Type: Grant
    Filed: February 2, 2017
    Date of Patent: October 31, 2017
    Assignee: FUJITSU LIMITED
    Inventor: Ikuo Soga
  • Patent number: 9800323
    Abstract: A satellite transmitter module for accepting input signals and emitting output signals for uplink transmission. The module includes a transmitter unit that includes i) transmitter circuitry, ii) at least one input port, iii) and at least one output port. At least one heat sink coupled to the transmitter unit includes a plurality of heat sink fins, wherein at least two of the plurality of heat sink fins are of different heights. A fan is capable of generating air flow parallel with the plurality of heat sink fins. The module further includes an outer enclosure that i) encloses the transmitter unit and the plurality of heat sink fins and ii) is impermeable to the air flow generated by the fan. The outer enclosure includes an enclosure cross section shape that is substantially similar to the at least one heat sink cross section shape defined by the height of each of the plurality of the heat sink fins.
    Type: Grant
    Filed: March 11, 2016
    Date of Patent: October 24, 2017
    Assignee: Mission Microwave Technologies, Inc.
    Inventors: Francis S Auricchio, Jr., David Fieldhouse
  • Patent number: 9762296
    Abstract: [Object] A wireless communication system capable of detecting propagation path modification from the outside and compensating for degradation of quality of communication between transmission and reception with respect to the propagation path modification is provided. A wireless communication system includes a transmitter that transmits electromagnetic waves in which a polarization direction rotates according to a signal in which data is loaded on a carrier, and a receiver that receives the electromagnetic waves and demodulates the data, in which the transmitter imparts angle information indicating a polarization direction for transferring the data to the signal, and sets a rotation frequency of the polarization direction to a frequency lower than a frequency of the carrier, and the receiver changes a polarization direction of the received electromagnetic waves, based on the angle information transferred by the electromagnetic waves.
    Type: Grant
    Filed: December 10, 2015
    Date of Patent: September 12, 2017
    Assignee: Hitachi, Ltd.
    Inventor: Ken Takei
  • Patent number: 9634402
    Abstract: An array antenna includes at least two antenna elements that are axially-aligned and axially-spaced. Polarization diversity is provided by at least one driven antenna element that provides horizontal and vertical polarizations. The driven element includes one or more feed points for the horizontal polarization and one or more feed points for the vertical polarization. A switching circuit is configured to switch between the one or more feed points to alternately provide the horizontal and vertical polarizations.
    Type: Grant
    Filed: May 26, 2015
    Date of Patent: April 25, 2017
    Assignee: Trimble Inc.
    Inventor: Robert Joseph Zavrel, Jr.
  • Patent number: 9621269
    Abstract: A multi-port radiator radiates electromagnetic signal in response to a beat frequency of a pair of optical signals. The radiator includes a multitude of optical paths each carrying an optical signal having first and second wavelengths. A multitude of frequency conversion elements convert the optical signals to electrical signals and deliver them to the radiator's multiple ports. The frequency of the electrical signals, and hence the frequency of the electromagnetic wave, is defined by the difference between the first and second wavelengths. The phases of the optical signals received by the frequency conversion elements are shifted with respect to one another. Optionally, the difference between the phases of the optical signals travelling through each pair of adjacent paths is 90°. The first and second wavelengths are generated by a pair of optical sources and are optionally modulated before being combined and delivered to the optical paths.
    Type: Grant
    Filed: July 26, 2013
    Date of Patent: April 11, 2017
    Assignee: CALIFORNIA INSTITUTE OF TECHNOLOGY
    Inventors: Steven Bowers, Firooz Aflatouni, Behrooz Abiri, Seyed Ali Hajimiri
  • Patent number: 9615274
    Abstract: Small anechoic chambers for evaluating a wireless device under test (DUT) are characterized by a set of antennas to which a test signal is applied and for which excitation coefficients are applied such that the test signal approximates a single plane wave or a preselected superposition of plane waves in the near field of the antennas. The test-equipment antennas in the chamber may be as close as one wavelength from the boundary of a test zone in which the DUT is disposed. Hence, the test zone can be in the near field of the test-equipment antennas and the test zone can be less than a wavelength from the chamber walls. Consequently, it is possible to perform tests in a small anechoic chamber that previously required a large anechoic chamber, e.g., advanced spatial channel-model tests and antenna-pattern measurements.
    Type: Grant
    Filed: August 8, 2012
    Date of Patent: April 4, 2017
    Assignee: AZIMUTH SYSTEMS, INC.
    Inventor: Thorkild Hansen
  • Patent number: 9520052
    Abstract: A radio transmitter used to transmit an activation signal for radio tags held by individuals or the like provides multi-dimensional polarization to an activation signal so as to allow more consistent range detection of an individual with a tag having a single axis of sensitivity. Circular or spherical polarization can be obtained using the system which may include an antenna design permitting decoupling of antennas necessary for the polarization, a quadrature locking system simplifying proper phase control of the necessary signals and a system for tuning the same.
    Type: Grant
    Filed: April 15, 2015
    Date of Patent: December 13, 2016
    Assignee: Innovative Control Systems, Inc.
    Inventors: James F. Stoffer, Mark Kiekhefer, Chris Hielsberg, Jason Guerrero
  • Patent number: 9507828
    Abstract: A method for processing an intranet includes crawling the intranet to identify at least some of the pages in the intranet, and determining, for each identified page, a number of links in a shortest path from a root page to the identified page.
    Type: Grant
    Filed: November 25, 2013
    Date of Patent: November 29, 2016
    Assignee: Microsoft Technology Licensing, LLC
    Inventor: Mark S. D'Urso
  • Patent number: 9405002
    Abstract: An optical radar device for scanning an object that reduces the effects of stray light is provided. The optical radar device has a light source, a light scanning section, a light path change section, a light receiver, and an opposite phase signal adder. The opposite phase signal adder adds an opposite phase signal to the output signal from the light receiver. A rise timing of the opposite phase signal is delayed by a predetermined time relative to an output timing of the pulse light, and the opposite phase signal has an opposite phase with respect to a phase of the reflected light.
    Type: Grant
    Filed: September 17, 2013
    Date of Patent: August 2, 2016
    Assignee: DENSO CORPORATION
    Inventor: Yoshiaki Hoashi
  • Patent number: 9331771
    Abstract: According to various embodiments, systems and methods are provided for improving signal quality and signal reliability over wireless communication using polarization diversity. Some embodiments use polarization diversity on a wireless channel to address and compensate for fading conditions such as non-frequency selective fading (also referred to as power fading, attenuation fading, and flat fading) and frequency selective fading (also referred to as multipath fading and dispersive fading). For example, some embodiments utilize a horizontal signal and a vertical signal on the same wireless channel when wirelessly communicating data between a transmitter and a receiver to address a fading condition.
    Type: Grant
    Filed: September 15, 2011
    Date of Patent: May 3, 2016
    Assignee: Aviat U.S., Inc.
    Inventors: Youming Qin, Frank Matsumoto
  • Patent number: 9325436
    Abstract: The present invention describes methods and apparatus for adaptive polarization transmission. An exemplary embodiment of the present invention provides an adaptive polarization transmission method. The method includes the step of analyzing at a transmitter device a first set of polarization state information relating to a first wireless signal path. Furthermore, the method includes the step of adapting a transmission signal to be distributed by the transmitter device based on at least the first set of polarization state information. In addition to adaptive polarization transmission methods, the present invention provides various adaptive polarization transmission systems. In an exemplary embodiment, an adaptive polarization transmission system includes a transmitter device. The transmitter device includes an analyzing unit for processing a first set of polarization state information relating to a first wireless signal path.
    Type: Grant
    Filed: December 10, 2013
    Date of Patent: April 26, 2016
    Assignee: Georgia Tech Research Corporation
    Inventors: Thomas G. Pratt, Brett T. Walkenhorst
  • Patent number: 9306673
    Abstract: Disclosed is a method to transmit multiple linear electromagnetic signals on a same frequency. For N data signals Si, where i=1 through N, each data signal is transmitted at 180/N degrees rotation from the next. For each data signal Si, signals inverse to Si are transmitted at +180/N degrees and ?180/N degrees from Si, rotated around the transmit axis, at a power level of 0.5/COS (180°/N) times the power of said Si signal. This results in cancellation of said data signal Si along the transmit rotation of Si and a receivable data signal inverted and at a 90 degrees rotation from said transmitted Si. A total of N distinct data signals are transmitted simultaneously on a same frequency, resulting in a dramatic increase in capacity in an electromagnetic system. N is an integer greater than one and could be, for example, 18.
    Type: Grant
    Filed: March 6, 2015
    Date of Patent: April 5, 2016
    Inventor: Nigel Iain Stuart Macrae
  • Patent number: 9246230
    Abstract: A leaky dielectric travelling wave surface waveguide antenna provides a multiband, low-profile antenna for satellite and other wideband (Ku/K/Ka/Q) communications applications. The antenna structure can be arranged into various types of arrays to yield a cost-effective, wideband/multiband operation with high power. In one implementation, the antenna includes a waveguide having a multi-layer substrate, a top surface, a feed (excitation) end, and a load end. One or more scattering features are disposed on the top surface of the waveguide or within the waveguide, and achieve operation in a leaky propagation mode. A wavelength correction element adds linear delay to incident energy received or transmitted by the antenna. The resulting structure permits a resulting beam direction of the antenna to be independent of the wavelength.
    Type: Grant
    Filed: February 13, 2012
    Date of Patent: January 26, 2016
    Assignee: AMI Research & Development, LLC
    Inventors: John T. Apostolos, Judy Feng, William Mouyos, Benjamin McMahon
  • Patent number: 8994588
    Abstract: The present invention relates to a method of generating two beams, having orthogonal polarizations, covering a selected area using an antenna (20) comprising multiple dual-polarized array elements (11). Each dual-polarized array element having a first phase center (18) associated with a first polarization and a second phase center (18) associated with a second polarization. The method comprises: designing a first weight matrix having a first non-zero weight vector for the first polarization and a second non-zero weight vector for the second polarization, calculating a second weight matrix based on the weight vectors of the first weight matrix, and applying the first and second weight matrix to the dual-polarized array elements to generate a second beam covering the selected area.
    Type: Grant
    Filed: March 4, 2010
    Date of Patent: March 31, 2015
    Assignee: Telefonaktiebolaget L M Ericsson (Publ)
    Inventors: Sven Oscar Petersson, Bjorn Gunnar Johannisson
  • Patent number: 8976713
    Abstract: There are provided a method and apparatus for transmitting and receiving signals in the same frequency band at the same time. A signal is received using a dual polarization antenna, the main axis of the polarization of the reception signal is predicted by performing adaptive polarization tracking, and polarization filtering is performed in order to remove interference. A signal is transmitted through a polarization completely orthogonal to the tracked polarization. In accordance with the present invention, in a wireless communication system, signals can be transmitted and received in the same frequency band at the same time.
    Type: Grant
    Filed: August 1, 2012
    Date of Patent: March 10, 2015
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Seungjae Bahng, Hoon Lee
  • Publication number: 20150061936
    Abstract: A ground-based antenna system includes a first phased array antenna to generate a first directional antenna beam at a first polarization, and a second phased array antenna to generate a second directional antenna beam at a second polarization. The first and second phased array antennas each include a lower antenna element row, an upper antenna element row, and medial antenna element rows therebetween. The ground-based antenna system further includes first and second antenna beam controllers cooperating with the first and second phased array antennas to generate a more steeply sloped phase taper associated with the lower antenna element row, a less steeply sloped phase taper associated with the medial antenna element rows, and a more steeply sloped phase taper associated with the upper antenna element row.
    Type: Application
    Filed: August 28, 2013
    Publication date: March 5, 2015
    Applicant: Harris Corporation
    Inventors: LEO LOVE, Francis Eugene Parsche
  • Publication number: 20150054687
    Abstract: A method is provided for generating and transmitting a test signal for an over-the-air test of a device-under-test that is in simulated motion. The method includes dithering Doppler shifts of a carrier frequency of the test signal on sub-path components of the test signal to produce slightly different frequencies per sub-path component, wherein the sub-path components are at a first and second polarization orientations. Dithering Doppler shifts can include dithering a first sub-path component at the first polarization orientation while keeping this sub-path component at the second polarization orientation at the original Doppler shift of the carrier frequency of the test signal, or keeping a first sub-path component at the first polarization orientation at the carrier frequency of the test signal while dithering this sub-path component at the second polarization orientation. Dithering Doppler shifts can include dithering sub-path components at the first and the second polarization orientation.
    Type: Application
    Filed: August 20, 2013
    Publication date: February 26, 2015
    Inventor: John Douglas Reed
  • Publication number: 20150015440
    Abstract: A wideband frequency selective polarizer is provided. The wideband frequency selective polarizer includes arrays of first-frequency slots in at least two metallic sheets in at least two respective planes; and arrays of second-frequency slots interspersed with the arrays of first-frequency slots in the at least two metallic sheets in at least two respective planes. A polarization of a first-frequency radio frequency (RF) signal in a linearly-polarized-broadband-RF signal that propagates through the at least two planes is one of: rotated by a first angle in a negative direction; or un-rotated. A polarization of a second-frequency-RF signal in the linearly-polarized-broadband-RF signal is rotated by a second angle in a positive direction.
    Type: Application
    Filed: July 11, 2013
    Publication date: January 15, 2015
    Inventor: James Patrick Montgomery
  • Publication number: 20150009068
    Abstract: A method and apparatus for electronically steering an antenna system. The apparatus comprises a dielectric substrate, a plurality of radiating spokes, and a number of surface wave feeds. The plurality of radiating spokes is arranged radially with respect to a center point of the dielectric substrate. Each radiating spoke in the plurality of radiating spokes forms a surface wave channel configured to constrain a path of a surface wave. Each of the number of surface wave feeds couples at least one corresponding radiating spoke in the plurality of radiating spokes to a transmission line that carries a radio frequency signal.
    Type: Application
    Filed: August 5, 2014
    Publication date: January 8, 2015
    Inventors: Daniel J. Gregoire, Amit M. Patel, Michael de La Chapelle
  • Patent number: 8862049
    Abstract: An emission/reception installation of satellite signals including a reflector to receive and emit radio signals, a unit integrating an LNB to transform radio signals into electrical signals in a first frequency band, to amplify the electrical signals in the first frequency band and to lower the first frequency band towards a first intermediate frequency band. The unit includes an emitter to amplify electrical signals in a second intermediate band having no common frequency with the first intermediate band, to raise the second intermediate band towards a second frequency band, to transform into radio signals the electrical signals in the second frequency band and to transmit these radio signals towards the reflector. The installation includes a box including a modulator to modulate electrical signals in the second intermediate band, an output to transmit electrical signals in the first intermediate band and a coaxial cable connecting the unit and the box.
    Type: Grant
    Filed: December 21, 2010
    Date of Patent: October 14, 2014
    Assignee: Eutelsat S A
    Inventor: Antonio Arcidiacono
  • Publication number: 20140253378
    Abstract: Systems and methods for providing a MIMO capable antenna with unique properties are provided herein. In some embodiments, a 4×4 MIMO capable antenna is provided with unique properties. Circular polarization from the antennas ensures that both vertical and horizontal polarizations are energized to the full extent provided by local regulations. A system includes a radio and a plurality of antennas coupled to the radio, the plurality of antennas servicing a broadcast area that has a 360 degree coverage area. Each of the plurality of antennas transmits and receives in an isolated sub-sector of the 360 degree coverage area.
    Type: Application
    Filed: March 5, 2014
    Publication date: September 11, 2014
    Inventor: Brian L. Hinman
  • Patent number: 8818315
    Abstract: Signal quality of a composite received signal in a radio communication network is optimized by adjusting a phase offset between received and/or transmitted signals based on signal quality parameters of the received and/or transmitted signals. The phase offset is adjusted by varying the phase offset between the received or transmitted signals such that that the composite signal is circularly, elliptically, or linearly polarized. The phase offset between the received or transmitted signals is continually adjusted based on the received signal quality parameters.
    Type: Grant
    Filed: April 18, 2013
    Date of Patent: August 26, 2014
    Assignee: AT&T Mobility II LLC
    Inventors: John E. Lewis, Melvin D. Frerking, David G. Shively
  • Patent number: 8803733
    Abstract: A method of optimizing an antenna system can include determining a desired angle to rotate an antenna based on an axial ratio of electromagnetic waves exiting a radome that surrounds the antenna. The desired angle can be determined by a computing device based on a set of axial ratio values.
    Type: Grant
    Filed: September 14, 2011
    Date of Patent: August 12, 2014
    Assignee: Mitre Corporation
    Inventors: Frank Kolak, Aleksandra Markina-Khusid
  • Patent number: 8779976
    Abstract: An antenna system includes: an orthogonal multi-polarization antenna configured to output independent double orthogonal polarizations through two independent input/output terminals; an antenna main control unit configured to perform a polarization control algorithm, collect and analyze information for polarization control, and provide polarization control information; and a polarization control unit configured to perform independent amplitude and phase control with regard to a pair of independent channels connected to the orthogonal multi-polarization antenna, based on the polarization control information received from the antenna main control unit, so that various polarizations are formed.
    Type: Grant
    Filed: November 23, 2011
    Date of Patent: July 15, 2014
    Assignees: Electronics and Telecommunications Research Institute, SK Telecom Co., Ltd.
    Inventors: Soon-Young Eom, Young-Bae Jung, Soon-Ik Jeon, Jae-Ick Choi, Yong-Sik Shin
  • Patent number: 8744031
    Abstract: Provided are a device and method for estimating carrier frequency offset of OFDM signals transmitted and received through a plurality of polarized antennas that may accurately estimate carrier frequency offset used for carrier frequency synchronization acquisition when there is interference between polarized waves.
    Type: Grant
    Filed: August 13, 2013
    Date of Patent: June 3, 2014
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jun-Woo Kim, Young-Jo Bang, Kyung-Yeol Sohn, Se-Young Cho, Youn-Ok Park
  • Patent number: 8714459
    Abstract: A scalable, high-bandwidth connectivity architecture for portable storage devices and memory modules may utilize EHF communication link chip packages mounted in various two-dimensional and three-dimensional configurations on planar surfaces such as printed circuit boards. Multiple electromagnetic communication links between devices distributed on major faces of card-like devices may be provided with respectively aligned pairs of communication units on each device. Adjacent communication units on a printed circuit board may transmit or receive electromagnetic radiation having different polarization, such as linear or elliptical polarization. Power and communication between communication devices may both be provided wirelessly.
    Type: Grant
    Filed: May 14, 2012
    Date of Patent: May 6, 2014
    Assignee: WaveConnex, Inc.
    Inventors: Gary D. McCormack, Ian A. Kyles
  • Publication number: 20140104105
    Abstract: A system for allowing ground terminals, specifically mobile ground terminals, to dynamically and electronically realign signal polarizations to match that of incoming and outgoing signal polarizations from designated space assets, specifically communications from satellites, comprising an adaptive re-orientation technique based on a cost minimization function, and a means of direct calculations of weighting components based on the knowledge of the orientation and bearing of both the satellites and the ground terminals. The embodiment will allow a mobile ground terminal to electronically realign itself to the signals of a satellite, without the need for mechanical processes to physically re-orient the antenna array.
    Type: Application
    Filed: December 15, 2013
    Publication date: April 17, 2014
    Inventor: Donald C.D. Chang
  • Patent number: 8659476
    Abstract: A device and method for determining a distance and/or orientation of a movable object includes a transmitter that is located on the object and a receiver. One of the transmitter and the receiver has an antenna having a known polarization plane. The other of the transmitter and the receiver has a counterclockwise circular polarized antenna and a clockwise circular polarized antenna.
    Type: Grant
    Filed: July 27, 2009
    Date of Patent: February 25, 2014
    Assignees: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V., Friedrich-Alexander-Universität Erlangen-Nürnberg
    Inventors: Andreas Eidloth, Hans Adel, Jörn Thielecke, Alexander Popugaev
  • Publication number: 20140049425
    Abstract: A signal source simultaneously emits horizontally polarized and vertically polarized signals and includes an enclosure, a power source and a signal generator received in the enclosure, and a first antenna and a second antenna set on an outer surface of the enclosure. The second antenna is perpendicular to the first antenna. The signal generator generates a comb-shaped signal having a predetermined frequency and the comb-shaped signal is split to two sub-signals of equal power by the signal generator, and the sub-signals are transmitted into a test environment via the first antenna and the second antenna.
    Type: Application
    Filed: August 15, 2013
    Publication date: February 20, 2014
    Applicants: HON HAI PRECISION INDUSTRY CO., LTD., HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD.
    Inventor: XIAO-LIAN HE
  • Patent number: 8606178
    Abstract: An electronic control module assembly includes antenna elements and a PCB. Each antenna element communicates an RF signal in a direction that corresponds with an outer face of a housing of the assembly. The PCB is received in a cavity of the housing and has RF-energy-transfer circuits and a baseband RF device, which demodulates the signal. Each RF-energy-transfer circuit receives the signal. At least two RF-energy-transfer circuits receive the signal from the antenna elements, and at least one RF-energy-transfer circuit does not receive the signal from one of the antenna elements and is a placeholder circuit. The baseband RF device is in communication with at least two of the RF-energy-transfer circuits receiving the signal. A connector provides a connection between each of the antenna elements and the PCB and is received by an aperture of the housing.
    Type: Grant
    Filed: March 8, 2011
    Date of Patent: December 10, 2013
    Assignee: GM Global Technology Operations LLC
    Inventors: David R. Petrucci, Mark A. Wisnewski, Charles A. Massoll
  • Patent number: 8606214
    Abstract: The invention describes a method of actuating a switch (S) between a device (Di) to be controlled and a power supply (P), which method comprises the steps of generating a first electrical signal (14) in a remote control unit (10) and converting the first electrical signal (14) into electromagnetic radiation (EM) by means of a first transmitting antenna (Ti) of the remote control unit (10). A first detecting antenna (Ri) of a remote control interface module (20) of the device (Di) to be controlled detects the electromagnetic radiation (EM) to obtain a second electrical signal (24), which is passively converted into a switch actuating signal (25). The switch actuating signal (25) is actuated to switch the device (Di) to be controlled between an operating mode in which current is drawn from the power supply (P) by the device (Di) during operation, and an inactive mode in which the device (Di) is completely disconnected from the power supply (P) so that no current is drawn by the device (Di).
    Type: Grant
    Filed: March 2, 2009
    Date of Patent: December 10, 2013
    Assignee: Koninklijke Philips N.V.
    Inventor: Achim Hilgers