Radar Reflector Patents (Class 342/5)
  • Patent number: 10218079
    Abstract: Periodic structure assemblies are provided. An example assembly includes: a dielectric layer having a top and a bottom; a first frequency selective layer disposed on the top of the dielectric layer, the first frequency selective layer having a plurality of electrically conductive elements arranged as a first periodic structure; and a second frequency selective layer disposed on the bottom of the dielectric layer, the second frequency selective layer having a plurality of electrically conductive elements arranged as a second periodic structure. Another periodic structure assembly includes: a substrate; and an array of periodic elements defined by a contiguous trace of conductive material supported by the substrate, each of the periodic elements exhibiting side walls, with each of the side walls having an inwardly extending protrusion.
    Type: Grant
    Filed: April 3, 2017
    Date of Patent: February 26, 2019
    Assignee: VENTI GROUP, LLC
    Inventors: Phillip Lindsey, Dow A. Eichenlaub
  • Patent number: 10193233
    Abstract: An active artificial magnetic conductor comprising an array of unit cells, each unit cell comprising an electrically conductive patch that is connected with an electrically conductive patch of neighboring unit cell in a column of unit cells using a non-Foster negative inductor and having RF isolating plates or walls between rows of unit cells. These isolating plates or walls eliminate undesirable cross coupling between the non-Foster negative inductors. The electrically conductive patches may be formed by metallic patches preferably arranged in the 2D array of such patches. Each patch preferably has a rectilinear shape.
    Type: Grant
    Filed: September 16, 2015
    Date of Patent: January 29, 2019
    Assignee: HRL Laboratories, LLC
    Inventors: Daniel Gregoire, Carson White, Joseph Colburn
  • Patent number: 10015769
    Abstract: This disclosure provides systems and methods for determining a location of a mobile device within an indoor environment. An embodiment of the system can have one or more positioning nodes (PONs), each having one or more antennas. Each PON can be disposed at a location within indoor environment and configured to transmit signals via the one or more antennas. The signals transmitted from the antennas of the PONs can be synchronized in time and frequency. A server communicatively coupled to the PONs and storing aiding information, including location and signal information related to the PONs, can transmit the aiding information to a mobile device. The mobile device can receive the signals from use the PONs and use the aiding information to determine a three dimensional position within the indoor environment based on one-way time difference of arrival of the signals.
    Type: Grant
    Filed: March 16, 2018
    Date of Patent: July 3, 2018
    Inventor: Saed Younis
  • Patent number: 9953936
    Abstract: A semiconductor structure includes a transceiver configured to communicate with a device, a molding surrounding the transceiver, a via extending through the molding, an insulating layer disposed over the molding, the via and the transceiver, and a redistribution layer (RDL) disposed over the insulating layer and comprising an antenna and a dielectric layer surrounding the antenna, wherein a portion of the antenna is extended through the insulating layer and the molding to electrically connect with the transceiver.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: April 24, 2018
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
    Inventors: Vincent Chen, Hung-Yi Kuo, Chuei-Tang Wang, Hao-Yi Tsai, Chen-Hua Yu, Wei-Ting Chen, Ming Hung Tseng, Yen-Liang Lin
  • Patent number: 9620862
    Abstract: A reflectarray reflects an incident wave in a desired direction, and the reflectarray includes a plurality of elements arranged in a first direction and in a second direction perpendicular to the first direction. The elements reflect the incident wave. A phase of a reflected wave by one element among the plurality of elements differs from a phase of the reflected wave by an element adjacent to the one element in the first direction by a predetermined value, and the phase of the reflected wave by the one element is equal to a phase of the reflected wave by an element adjacent to the one element in the second direction. Gap sizes between patches of a predetermined plural number of elements arranged in the first direction vary from a smallest value to a largest value. Here, an oblique TM incidence is utilized at a spurious resonance frequency.
    Type: Grant
    Filed: May 20, 2013
    Date of Patent: April 11, 2017
    Assignee: NTT DOCOMO, INC.
    Inventors: Tamami Maruyama, Yasuhiro Oda, Jiyun Shen, Ngoc Hao Tran
  • Patent number: 9500743
    Abstract: A system and method for locating lost golf balls is described. In one embodiment, a plurality of small RFID chips are applied to or embedded in a ball. When the ball is to be located, a user uses a ball finder to receive RF signals from the RFID chips and locate the ball. The ball finder may have useful additional features such as overlaid maps to help and GIS data to help the user find the ball. In an alternative embodiment, a ball is prepared by applying a highly-reflective paint, such as a metallic paint, or a highly-absorbent paint such as a black iron ball paint, to create a characteristic radar signature for the ball. The ball finder may then be configured to locate the ball using the characteristic radar signature.
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: November 22, 2016
    Inventors: Dion J. Reid, Deron Reid, Bradley K. Hunt
  • Patent number: 9379448
    Abstract: An active artificial magnetic conductor includes a ground plane and an array of unit cells coupled to the ground plane. Each unit cell includes a low impedance shunt coupled to the ground plane and an impedance element coupled to the low impedance shunt. A plurality of non Foster circuits are coupled in two different directions between impedance elements of adjacent neighboring unit cells in the array of unit cells.
    Type: Grant
    Filed: February 24, 2014
    Date of Patent: June 28, 2016
    Assignee: HRL Laboratories, LLC
    Inventors: Daniel J. Gregoire, Carson R. White
  • Patent number: 9307631
    Abstract: According to various aspects, exemplary embodiments include one or more frequency selective surfaces, which may be used for attenuating, reflecting, and/or redirecting electromagnetic signals. Also disclosed are methods of using one or more frequency selective surfaces for attenuating, reflecting, and/or redirecting electromagnetic signals.
    Type: Grant
    Filed: March 29, 2013
    Date of Patent: April 5, 2016
    Assignee: Laird Technologies, Inc.
    Inventors: John Song, Paul Francis Dixon, Yoeri Ariën
  • Patent number: 9231443
    Abstract: A terminal device includes a housing, a communication antenna installed in a first region in the housing and configured to transmit and receive electromagnetic waves, an agglomerative meta-structure installed in a second region spaced from the first region in the housing and configured to agglomerate the electromagnetic waves received from the communication antenna, and a recycling unit configured to convert the electromagnetic waves agglomerated by the agglomerative meta-structure to effective power.
    Type: Grant
    Filed: August 7, 2013
    Date of Patent: January 5, 2016
    Assignee: SOONGSIL UNIVERSITY-INDUSTRY COOPERATION FOUNDATION
    Inventors: Chul Hun Seo, Chongmin Lee
  • Patent number: 9167744
    Abstract: A device for attaching to a shank of a planting unit. The device may include liquid delivery tubing for delivery fertilizer to a planting furrow and a forming bar configured for securing to the shank. The forming bar may include a passageway extending therethrough for receiving and passing through fertilizer or other liquid that is delivered to the liquid delivery tubing. The forming bar may include a shank connecting portion, a rib portion, and a foot portion. The rib and foot portions may define the passageway. Further, the foot portion may protect the tubing. A method for using the device to deliver fertilizer to a seed furrow is also described.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: October 27, 2015
    Assignee: SCHAFFERT MANUFACTURING COMPANY, INC.
    Inventor: Paul E. Schaffert
  • Publication number: 20150130650
    Abstract: The present invention relates to reflector arrangement for proof test of a radar level gauge and to a radar level gauge system comprising such a reflector arrangement. The reflector arrangement comprises a pliable elongated member for attachment to a fixed structure in the tank; a weight attachable to the pliable elongated member; and a reflector member for reflecting an electromagnetic signal impinging on the reflector plate. The weight is configured to be coupled to the reflector member in such a way that an orientation of the weight determines an orientation of the reflector member.
    Type: Application
    Filed: November 12, 2013
    Publication date: May 14, 2015
    Applicant: Rosemount Tank Radar AB
    Inventors: Thense Korsbo, Bjorn Lindblad
  • Publication number: 20150109162
    Abstract: A combination of a radar sensor and a trim component, which are to be mounted on a motor vehicle so that the trim component is penetrated by microwaves of the radar sensor, the trim component including at least one layer, which reflects a portion of the microwaves, the trim component including an additional layer, which is configured based on thickness and dielectric constant to reduce the reflection.
    Type: Application
    Filed: October 16, 2014
    Publication date: April 23, 2015
    Applicant: Robert Bosch GmbH
    Inventor: Thomas BINZER
  • Patent number: 8976061
    Abstract: A radar system (100) is described including a transmitting assembly (10), a receiving assembly (20), a control unit (30) and a signal processing unit (40). The transmitting assembly (10) receives an input signal (31) and transmits an incident radar signal (2). The transmitting assembly (10) includes a Rotman lens (12) having a lens cavity (74), a plurality of beam ports (60), a plurality of array ports (62) and a patch antenna assembly (14). The lens cavity (74) has a lens gap (h) between 10 microns to 120 microns, and preferably 40 microns to 60 microns. The patch antenna assembly (14) includes a plurality of antenna arrays (130) operable to receive a plurality of time-delayed, in-phase signals from the Rotman lens (12) and to transmit the incident radar signal (2) towards a target (4). The receiving assembly (20) receives a reflected radar signal (6) and produces an output signal.
    Type: Grant
    Filed: March 3, 2011
    Date of Patent: March 10, 2015
    Inventor: Sazzadur Chowdhury
  • Publication number: 20150048963
    Abstract: In order to determine the topology of a bulk-material surface, a series of echo curves are measured under different main emission directions of the antenna. The main emission directions are generated using at least one prism, which lies in the beam path of the level indicator and is rotated. It is thereby possible to achieve in a compact design the decoupling of beam generation from mechanical deflection of the main emission direction.
    Type: Application
    Filed: August 11, 2014
    Publication date: February 19, 2015
    Inventor: Levin DIETERLE
  • Publication number: 20150029051
    Abstract: A wearable radar reflector includes a retroreflector configured to reflect radiation received from a vehicle, and incorporated into a garment worn by a pedestrian.
    Type: Application
    Filed: August 27, 2013
    Publication date: January 29, 2015
    Inventors: Tom Driscoll, Roderick A. Hyde, Jordin T. Kare, David R. Smith, Clarence T. Tegreene
  • Publication number: 20150029050
    Abstract: A wearable radar reflector includes a retroreflector configured to reflect radiation received from a vehicle, and incorporated into a garment worn by a pedestrian.
    Type: Application
    Filed: July 25, 2013
    Publication date: January 29, 2015
    Applicant: Elwha LLC
    Inventors: Tom Driscoll, Roderick A. Hyde, Jordin T. Kare, David R. Smith, Clarence T. Tegreene
  • Publication number: 20140368373
    Abstract: Apparatus and methods useful in surveying to provide information rich models. In particular, information not readily or possibly provided by conventional survey techniques can be provided. In some versions targets provide reference for baseline positioning or improving position information otherwise acquired. Scanning may be carried out in multiple locations and merged to form a single image. Machine mounted and hand mounted scanning apparatus is disclosed.
    Type: Application
    Filed: June 20, 2014
    Publication date: December 18, 2014
    Inventors: Stephen B. Crain, Joseph V.R. Paiva, Dennis H. Cowdrick
  • Patent number: 8902408
    Abstract: A method for measuring three-dimensional coordinates of a probe center includes: providing a spherically mounted retroreflector; providing a probe assembly; providing an orientation sensor; providing a coordinate measurement device; placing the spherically mounted retroreflector on the probe head; directing the first beam of light from the coordinate measurement device to the spherically mounted retroreflector; measuring the first distance; measuring the first angle of rotation; measuring the second angle of rotation; measuring the three orientational degrees of freedom based at least in part on information provided by the orientation sensor; calculating the three-dimensional coordinates of the probe center based at least in part on the first distance, the first angle of rotation, the second angle of rotation, and the three orientational degrees of freedom; and storing the three-dimensional coordinates of the probe center.
    Type: Grant
    Filed: April 23, 2012
    Date of Patent: December 2, 2014
    Assignee: Faro Technologies Inc.
    Inventor: Robert E. Bridges
  • Publication number: 20140347206
    Abstract: A method for ascertaining a misalignment of a radar sensor of a vehicle ascertains a misalignment angle of the misalignment using a weighted averaging of calculated differences between first and second angles of radar reflectors relative to various axes. Also described is a device for ascertaining this misalignment.
    Type: Application
    Filed: May 21, 2014
    Publication date: November 27, 2014
    Applicant: Robert Bosch GmbH
    Inventor: Siegbert STEINLECHNER
  • Publication number: 20140197977
    Abstract: A composition for destructive interference in at least a portion of the frequency range from about 1 GHz to about 20 GHz can comprise a dielectric and a conductive filler mixed with at least a portion of the dielectric, wherein the percentage volume of the conductive filler relative to the total volume of the composition is configured such that the wavelength of sensitivity for the composition is on the order of a wavelength of an incident electromagnetic radiation in at least a portion of the frequency range from about 1 GHz to about 20 GHz.
    Type: Application
    Filed: January 11, 2013
    Publication date: July 17, 2014
    Applicant: SABIC Innovative Plastics IP B.V.
    Inventors: Davide Louis Simone, Gary Stephen Balch, David Alexander Gibson, III, Harold Jay Patchen, Allen Lawrence Garner, Gregory John Parker, Daniel Qi Tan, Francis Johnson
  • Publication number: 20140197978
    Abstract: A composition for energy dissipation in at least a portion of the frequency range from about 1 GHz to about 20 GHz, the composition can comprise a dielectric and graphene mixed with at least a portion of the dielectric, wherein the percentage volume of the graphene relative to the total volume of the composition is configured such that dissipation of incident electromagnetic radiation is substantially optimized in at least a portion of the frequency range from about 1 GHz to about 20 GHz.
    Type: Application
    Filed: January 11, 2013
    Publication date: July 17, 2014
    Applicant: SABIC Innovative Plastics IP B.V.
    Inventors: Davide Louis Simone, Gary Stephen Balch, David Alexander Gibson, III, Harold Jay Patchen, Allen Lawrence Garner, Gregory John Parker
  • Publication number: 20140118177
    Abstract: A wind turbine component incorporating radar-absorbing material having increased compatibility with lightning protection systems is described. The radar absorbing material includes a ground plane having an electrical conductivity and/or a dielectric constant that is higher in the presence of an electric field having a frequency of 1 GHz and above than in the presence of an electric field having a frequency of 10 MHz and below. Suitable materials for the ground plane include ferroelectric and ferrimagnetic materials and percolating material combinations, all of which have frequency-dependent properties that can be tuned to make the ground plane highly reflective at radar frequencies and benign at lightning discharge frequencies.
    Type: Application
    Filed: February 23, 2012
    Publication date: May 1, 2014
    Applicant: VESTAS WIND SYSTEMS A/S
    Inventor: Steve Appleton
  • Publication number: 20140091962
    Abstract: A level measuring device with a signal generator for electromagnetic waves includes an elongated hollow waveguide or for guiding the generated electromagnetic waves, wherein on the end of the hollow waveguide a reflector is situated and a method for operating the same.
    Type: Application
    Filed: March 12, 2013
    Publication date: April 3, 2014
    Applicant: VEGA GRIESHABER KG
    Inventors: FRITZ LENK, Joachim Benz, Klaus Kienzle
  • Patent number: 8643532
    Abstract: Methods and apparatus for providing a tunable absorption-emission band in a wavelength selective device are disclosed. A device for selectively absorbing incident electromagnetic radiation includes an electrically conductive surface layer including an arrangement of multiple surface elements. The surface layer is disposed at a nonzero height above a continuous electrically conductive layer. An electrically isolating intermediate layer defines a first surface that is in communication with the electrically conductive surface layer. The continuous electrically conductive backing layer is provided in communication with a second surface of the electrically isolating intermediate layer. When combined with an infrared source, the wavelength selective device emits infrared radiation in at least one narrow band determined by a resonance of the device. In some embodiments, the device includes a control feature that allows the resonance to be selectively modified.
    Type: Grant
    Filed: February 22, 2010
    Date of Patent: February 4, 2014
    Assignee: Nomadics, Inc.
    Inventors: Irina Puscasu, Edward A. Johnson
  • Publication number: 20140015704
    Abstract: This invention describes an application and its methodology to protect a target against a minimum of one attacking missile through timely optimized ship maneuvers by using known RCS calculations against radar and/or infrared guided missiles. This application also provides the necessary measurement and analysis abilities of the many possible positions, or physical constraints a ship may need to be in, in order to significantly increase the effectiveness of current shipborne “state of the art” soft-kill systems against attacking unmanned missiles.
    Type: Application
    Filed: March 28, 2012
    Publication date: January 16, 2014
    Inventor: Peter Huber
  • Publication number: 20140009319
    Abstract: A dipole based decoy system provides an inexpensive alternative to chaff. A non-conductive filament patterned with lengths of conductive material that form dipole antennas at one or more radar frequencies is stored on the air vehicle and attached to a projectile. In response to a RWR warning, a programmed time or location or a time-to-target, a mechanism releases the projectile(s) to deploy the filament with its dipole antennas at a speed greater than or equal to the speed of the air vehicle to present an extended target or a separate false target to enemy radar. The projectile is either towed behind the air vehicle or launched away from the air vehicle. Either approach is effective to overcome Doppler and moving range gating by presenting coherent signal returns and ranges and velocities consistent with the air vehicle during a threat interval posed by the radar defense systems.
    Type: Application
    Filed: November 12, 2003
    Publication date: January 9, 2014
    Inventor: Chris E. Geswender
  • Patent number: 8593328
    Abstract: An inflatable dummy target fittable into a carrier missile capable of being released from the carrier missile during exo-atmospheric flight; upon release, the dummy target or portion thereof is capable of being inflated and manifest characteristics that resemble GTG missile characteristics, wherein the GTG missile characteristics include IR signature, RF signature and GTG missile.
    Type: Grant
    Filed: March 17, 2009
    Date of Patent: November 26, 2013
    Assignee: Israel Aerospace Industries Ltd.
    Inventors: Jacob Rovinsky, Yoav Tourgeman
  • Patent number: 8587473
    Abstract: A method for onboard determination of a roll angle of a projectile. The method including: transmitting a polarized RF signal from a reference source, with a predetermined polarization plane; receiving the signal at a pair of polarized RF sensor cavities positioned symmetrical on the projectile with respect to a reference roll position on the projectile; measuring a difference between an output of the pair of polarized RF sensor cavities resulting from the received signal to determine zero output roll positions of the projectile; and comparing an output of the pair of polarized RF sensor cavities at each of the zero output positions to determine when the projectile is parallel to the predetermined polarization plane. The method can also include analyzing an output of at least one third sensor positioned on the projectile to determine whether the roll angle position of the projectile is up as compared to the horizon.
    Type: Grant
    Filed: May 17, 2012
    Date of Patent: November 19, 2013
    Assignee: Omnitek Partners LLC
    Inventors: Jahangir S. Rastegar, Carlos M. Pereira
  • Patent number: 8587474
    Abstract: A radar system includes at least one transmit array comprising a plurality of metamaterial elements. The radar system further includes at least one near-field stimulator for inputting electromagnetic signal to the transmit array so that a sub-wavelength target is illuminated with an electromagnetic wave.
    Type: Grant
    Filed: April 14, 2011
    Date of Patent: November 19, 2013
    Assignee: Alliant Techsystems Inc.
    Inventors: Christopher Fuller, John R. Lamberg, John J. Geddes, Michael J. Gawronski
  • Publication number: 20130229296
    Abstract: A multi-beam reflectarray includes two or more element arrays including plural elements aligned along a predetermined direction. The multi-beam reflectarray is such that, in each of a first element group and a second element group included in at least one of the element arrays, a difference between phases of radio waves reflected by corresponding two elements is in proportion to a first product of a distance between the two elements and a value of a trigonometric function with respect to an angle of reflection by the two elements, and a distance between neighboring elements in the first element group is equal to a product of a rational number and a distance between neighboring elements in the second element group.
    Type: Application
    Filed: August 15, 2012
    Publication date: September 5, 2013
    Applicant: NTT DOCOMO, INC.
    Inventors: Tamami Maruyama, Yasuhiro Oda, Jiyun Shen, Ngoc Hao Tran, Hidetoshi Kayama
  • Patent number: 8482451
    Abstract: A resonant radar reflector assembly comprising first and second reflector members (110A, 110B), the first and second and reflector members each being configured to resonate at their respective resonant frequency when irradiated by radio frequency (RF) radiation of a corresponding frequency, wherein the first member has a portion (114A) responsive to an electric field applied parallel to an electric polarization axis of the first member, the second member having a corresponding portion (114B) responsive to an electric field applied parallel to a corresponding electric polarization axis of the second member, the first member also having a portion (112A) responsive to a magnetic field applied parallel to a magnetic polarization axis of the first member, the second member having a corresponding portion (112B) responsive to a magnetic field applied parallel to a corresponding magnetic polarization axis of the second member, the first and second members being arranged such that at least one electric or magnetic pol
    Type: Grant
    Filed: February 16, 2009
    Date of Patent: July 9, 2013
    Assignee: Isis Innovation Limited
    Inventors: Harvey John Burd, David John Edwards, Christopher John Stevens, Tong Hao
  • Patent number: 8471757
    Abstract: The invention relates to a dielectric lens useable in both the radio wave band and the light wave band, and a device using this dielectric lens. The device comprises a dielectric lens formed of a transparent dielectric member small in dielectric loss and having an omnidirectional feature with regard to an electromagnetic wave, a transparent dielectric shell that is hollow inside and having the radius that is equal to the focal distance of the dielectric lens, and a holding mechanism for positioning and holding the dielectric shell and the dielectric lens so as to locate the dielectric shell at a position along the focal distance with the dielectric lens included at the inner center of this dielectric shell. The device is provided, at the focal point of the dielectric lens, with a reflector for reflecting an electromagnetic wave or a generator for generating an electromagnetic wave.
    Type: Grant
    Filed: July 27, 2005
    Date of Patent: June 25, 2013
    Assignees: Electronic Navigation Research Institute, An Independent Administrative Institution, Lenstar Co., Ltd.
    Inventors: Naruto Yonemoto, Motoharu Matsuzaki
  • Patent number: 8471756
    Abstract: In one embodiment, RF front-end circuit includes a tunable matching network having an input coupled to an RF interface port, a directional coupler with a first connection coupled to an RF input of a mixer, a second connection coupled to an RF signal generation port, and a third connection coupled to an output of the tunable matching network. The directional coupler is configured to direct a signal from the RF signal generation port to the tunable matching network and to direct a signal from the tunable matching network port to the RF port of the mixer. The RF front-end circuit also has a tunable matching network control unit coupled to the tunable matching network. The control unit is configured to optimize an impedance match between the RF interface port and the output of the tunable matching network.
    Type: Grant
    Filed: May 21, 2012
    Date of Patent: June 25, 2013
    Assignee: Infineon Technologies AG
    Inventors: Andrei Grebennikov, Guenter Haider, Johann-Peter Forstner
  • Patent number: 8451162
    Abstract: In one aspect, a measurement system is disclosed that includes a source of microwave radiation having one or more wavelengths capable of penetrating through a visibly opaque obstruction, e.g., a wall. The source can be movably positioned on one side of the obstruction for illuminating thereof. The system can further include a microwave reflecting element disposed on another side of the obstruction, where the reflecting element is capable of reflecting at least a portion of the radiation transmitted through the obstruction. A plurality of radiation sensors are positioned relative to the obstruction so as to differentially detect at least a portion of the reflected radiation transmitted through the obstruction so as to determine a position of the source relative to the reflective element.
    Type: Grant
    Filed: December 19, 2006
    Date of Patent: May 28, 2013
    Assignee: Walleye Technologies, Inc.
    Inventors: David S. Holbrook, Christopher P. Adams
  • Patent number: 8384581
    Abstract: A structure and a method for modifying an existing design of structure are provided, wherein the structure is provided to at least partially enclose an object that has a large radar cross section. The structure comprises a non-metallic portion having a radar-reflective layer applied to an inclined surface of the structure. The inclined surface is arranged with one or more angles of inclination selected so that the radar cross-section for the structure has a value that is lower than that for the object enclosed in one or more frequency ranges. In a preferred variation, an at least partially detached and appropriately shaped radar-reflective structure may be provided as an alternative to or to supplement the modification of an existing enclosure.
    Type: Grant
    Filed: October 24, 2008
    Date of Patent: February 26, 2013
    Assignee: BAE Systems PLC
    Inventors: James Christopher Gordon Matthews, Per Sveigaard Mikkelsen
  • Patent number: 8378877
    Abstract: The present invention relates to porous structures embedded with nanoparticles, methods of forming the structures, and methods of using the structures. In most general form, the invention relates to porous materials embedded with nanoparticles having characteristics, such as magnetic, enabling to align or arrange the nanoparticles in the material by exposure, e.g. to a magnetic field. Therefore, a method according to the invention provides manufacturing materials having variable magnetic and electromagnetic properties which can be adapted during manufacture for various applications, such as electromagnetic wave absorbers, lens, concentrators, etc.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: February 19, 2013
    Inventors: Aleksandr Mettalinovich Tishin, Samed Veisalkara Ogly Halilov
  • Publication number: 20130015997
    Abstract: A distance measuring device and a method for determining a distance are provided. The distance measuring device includes a reflective member, evaluation electronics and a sensor device having at least one coupling probe for feeding a transmission signal into a line structure with the reflective member. The reflective member includes a base plate with an attached collar for forming a cup-shaped element.
    Type: Application
    Filed: July 16, 2012
    Publication date: January 17, 2013
    Applicant: Astyx GmbH
    Inventor: Guenther Trummer
  • Patent number: 8289199
    Abstract: An antenna array for use within a microwave imaging system to capture a microwave image of a target is selectively programmed to optimize one or more parameters of the microwave imaging system. The array includes a plurality of antenna elements, each capable of being programmable with a respective phase shift to direct a beam of microwave radiation toward the target such that the microwave radiation from each of the plurality of antenna elements arrives at the target substantially in-phase. To optimize a parameter of the microwave imaging system, the phase shifts of selective ones of the antenna elements are altered, while still maintaining the substantially in-phase microwave radiation at the target.
    Type: Grant
    Filed: March 24, 2005
    Date of Patent: October 16, 2012
    Assignee: Agilent Technologies, Inc.
    Inventors: Izhak Baharav, Robert C. Taber, Gregory S. Lee
  • Publication number: 20120235847
    Abstract: Described herein is a passive wireless resonating non-linear sensor that is typically based on a ferroelectric varactor. The sensor replies its data at an intermodulation frequency when a reader device illuminates it at two closely-located frequencies. Furthermore, described herein is a general intermodulation read-out principle for passive wireless sensors. A sensor utilizes a mixing element, such as a varactor and it can be equipped with a capacitive, inductive, or resistive sensor element. When the sensor is illuminated with signals with two frequencies it replies the sensor data at an intermodulation frequency.
    Type: Application
    Filed: March 29, 2012
    Publication date: September 20, 2012
    Applicant: Teknologian tutkimuskeskus VTT
    Inventors: Ville Viikari, Heikki Seppä, Tomi Mattila, Ari Alastalo, Mark Allen, Timo Varpula
  • Patent number: 8258999
    Abstract: A method for onboard determination of a roll angle of a projectile.
    Type: Grant
    Filed: November 22, 2009
    Date of Patent: September 4, 2012
    Assignee: Omnitek Partners LLC
    Inventors: Jahangir S. Rastegar, Carlos M. Pereira
  • Publication number: 20120200444
    Abstract: A reflector is arranged at a first position, which is assigned to a first end of the object. An antenna-system is arranged at a second position, which is assigned to a second end of the object. The antenna system contains a transmit antenna and a receive antenna, while the reflector and the antenna-system are coupled by a radio signal. The radio signal is sent from the transmit antenna via the reflector towards the receive antenna. The receive antenna is connected with an evaluation unit, which is prepared to measure the deflection between the first end of the object and the second end of the object based on the received radio signal.
    Type: Application
    Filed: January 31, 2012
    Publication date: August 9, 2012
    Inventors: Jimmi Andersen, Per Egedal, Henrik Stiesdal, Andreas Ziroff
  • Patent number: 8223061
    Abstract: The invention proposes to provide distraction spoofing even on modern infrared, radar and dual-mode guided missiles (4) by production of a decoy chain (20). The chain (20) is formed by a plurality of apparent targets which are switched successively, for example by firing of individual chaff submunitions (2.1-2.5). The deployment takes place before or during the search phase of the missile and can in this case, for example, be carried out using the reverse walk-off principle or at the same time simultaneously or successively and in the form of a pattern. This ensures that the decoys (2.1-2.5) act initially in the greatest selected range zone away from the target (3). The spoofing chain (20) created in this way results in the missile (4) having to carry out a series of time-consuming analysis processes on its way to the target (3).
    Type: Grant
    Filed: June 28, 2006
    Date of Patent: July 17, 2012
    Assignee: Rheinmetall Waffe Munition GmbH
    Inventors: Heinz Bannasch, Martin Fegg
  • Publication number: 20120133542
    Abstract: A method for transmitting radio frequency (RF) radiation to an object located in proximity to a reflector includes the steps of: selecting a target reflector and a level of power for conveying to the target reflector by reradiation from the target reflector, determining a resonance profile of the target reflector, the resonance profile including at least one resonant frequency of the target reflector, selecting a transmission profile matching the resonance profile, the transmission profile comprising the at least one resonant frequency, and transmitting RF radiation in accordance with the transmission profile towards the target reflector.
    Type: Application
    Filed: June 27, 2011
    Publication date: May 31, 2012
    Applicant: Drosera Ltd.
    Inventor: Eran BEN-SHMUEL
  • Patent number: 8188904
    Abstract: In one embodiment, RF front-end circuit includes a tunable matching network having an input coupled to an RF interface port, a directional coupler with a first connection coupled to an RF input of a mixer, a second connection coupled to an RF signal generation port, and a third connection coupled to an output of the tunable matching network. The directional coupler is configured to direct a signal from the RF signal generation port to the tunable matching network and to direct a signal from the tunable matching network port to the RF port of the mixer. The RF front-end circuit also has a tunable matching network control unit coupled to the tunable matching network. The control unit is configured to optimize an impedance match between the RF interface port and the output of the tunable matching network.
    Type: Grant
    Filed: October 9, 2008
    Date of Patent: May 29, 2012
    Assignee: Infineon Technologies AG
    Inventors: Andrei Grebennikov, Guenter Haider, Johann-Peter Forstner
  • Patent number: 8184036
    Abstract: A device and method for estimating the operational effectiveness, status, and protection range of an electronic countermeasures system in real time or near real time are provided. The device and method calculate a predicted ECM power at a given location using a propagation and scenario model. Then a measured ECM power at the given location is used to determine a correction value equal to the difference between the calculated and measured ECM powers. The correction value and the propagation model are then used with a heuristic method to refine estimates of propagation and scenario parameters. The refined parameter set is used to produce a refined prediction of ECM power, which is used to create a refined correction factor. The refined correction factor is used to determine predicted ECM powers at a plurality of locations in an area around the device to determine a boundary of protection.
    Type: Grant
    Filed: March 7, 2008
    Date of Patent: May 22, 2012
    Assignee: Sky Industries Inc.
    Inventor: Shawn Charland
  • Publication number: 20120107553
    Abstract: A split core for a composite structure is described. The split core includes a first core layer, a second core layer, and a functional interlayer disposed between the first and second core layers. The first core layer separates the functional interlayer from a functional layer of the composite structure and/or from an outer surface of the composite structure. The thickness of the first core layer is substantially uniform across the composite structure and the distance between the functional interlayer and the functional layer and/or the outer surface of the composite structure is substantially constant across the composite structure.
    Type: Application
    Filed: April 23, 2010
    Publication date: May 3, 2012
    Applicant: VESTAS WIND SYSTEMS A/S
    Inventors: Steve Appleton, Knud Stenbaek Nielson
  • Publication number: 20120093658
    Abstract: A core for a composite structure is described. The core has first and second core layers, and an interlayer region between the first and second core layers. At least one of the first and second core layers has hinge portions that facilitate draping of the core without interrupting the interlayer region. The interlayer region may include functionality such as a radar reflecting layer and/or optical fibres. Alternatively, the core may be a bonded core in which the interlayer region includes an adhesive layer for bonding the first and second core layers together.
    Type: Application
    Filed: April 23, 2010
    Publication date: April 19, 2012
    Applicant: VESTAS WIND SYSTEMS A/S
    Inventors: Steve Appleton, Knud Stenbæk Nielsen
  • Patent number: 8125369
    Abstract: A modular RCS (Radar Cross Section) and IR (Infra-Red) signal generation device includes: a plastic bag which is normally stored in a folded state, and inflated when gas is introduced into the bag as desired; a radar reflector received in the plastic bag, the radar reflector being configured in a multi-hedral reflector structure having a reflection characteristic similar to that of a naval vessel to be protected; hot air tubes formed through the plastic bag, hot air being capable of generating IR signals by flowing through the hot air tubes; and connection patches positioned on one of the surfaces of the plastic bag at the points where the ends of the hot air tubes intersect with the surfaces, respectively, the connection patches being adapted to be attached to those of adjacent modular RCS and IR signal generation devices, respectively, so as to interconnect the hot air tubes with those of the adjacent modular RCS and IR signal generation devices.
    Type: Grant
    Filed: March 17, 2011
    Date of Patent: February 28, 2012
    Assignee: Korea Maritime & Ocean Engineering Research Institute
    Inventors: Hee-Jin Kang, Dong-Kon Lee
  • Patent number: 8106810
    Abstract: An electromagnetic radiation filter uses a plurality of dipole antennas to mitigate the transmission of electromagnetic radiation. The dipole antennas can form one or more arrays that scatter electromagnetic radiation. Examples of application include mitigating the reception of a difference frequency in non-linear radar, use in protective goggles, and use in a protective shield.
    Type: Grant
    Filed: November 3, 2008
    Date of Patent: January 31, 2012
    Assignee: The Boeing Company
    Inventors: Sandor Holly, Nicholas Koumvakalis, Robert A. Smith
  • Patent number: 8102296
    Abstract: An exemplary example of the present disclosure proposes an electromagnetic conductor reflecting plate including a perfect electronic conductor and at least two artificial magnetic conductors, wherein the each of the artificial magnetic conductor is disposed on arbitrary one side of the perfect electronic conductor, and a boundary between the perfect electronic conductor and each of the artificial magnetic conductor forms a virtual radiation unit. In addition, an exemplary example of the present disclosure further proposes an antenna array including an antenna and the electromagnetic conductor reflecting plate, wherein the antenna is disposed on the electromagnetic conductor reflecting plate.
    Type: Grant
    Filed: March 3, 2010
    Date of Patent: January 24, 2012
    Assignee: Industrial Technology Research Institute
    Inventors: Jenn-Hwan Tarng, Li-Yuan Chang, Chin-Chung Nien, Ya-Chung Yu, Jun-Yen Huang