Refracting Means And Radio Wave Energy Filters (e.g., Lenses And Polarizers) Patents (Class 343/909)
  • Patent number: 10297900
    Abstract: According to various embodiments of the present disclosure, an electronic device may include: an array antenna including a plurality of first radiating conductors that transmit or receive a wireless signal in a first frequency band and are arranged on a circuit board; and a lens unit including at least one lens disposed on a housing of the electronic device to correspond to the first radiating conductors. The lens unit may refract or reflect a wireless signal transmitted/received through each of the first radiating conductors. The electronic device as described above may be variously implemented according to embodiments. For example, a portion of the lens unit may transmit/receive a wireless signal in a frequency band that is different from the frequency band of the wireless signal transmitted/received by the first radiating conductors.
    Type: Grant
    Filed: January 7, 2017
    Date of Patent: May 21, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Young-Ju Lee, Seung-Tae Ko, Hyun-Jin Kim
  • Patent number: 10199738
    Abstract: An electromagnetic device includes: a first medium having a first material having a first dielectric constant, the first medium having a plurality of spaces filled with a second material having a second dielectric constant that is different from the first dielectric constant; and a plurality of antennas disposed proximate the first medium; wherein adjacent ones of the plurality of spaces of the first medium have an average spacing therebetween of less than one quarter of an operating wavelength of at least one of the plurality of antennas.
    Type: Grant
    Filed: December 28, 2017
    Date of Patent: February 5, 2019
    Assignee: BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM
    Inventors: Raymond C. Rumpf, Cesar R. Garcia
  • Patent number: 10165674
    Abstract: A circuit board includes a dielectric layer, a conductive layer disposed on a surface of the dielectric layer, and an electromagnetic bandgap (EBG) structure disposed in the dielectric layer. The electromagnetic bandgap structure includes a via and a signal suppression board. Two opposite ends of the via are respectively connected to the electrically conductive layer and the signal suppression board respectively. The signal suppression board has at least one hollow pattern.
    Type: Grant
    Filed: January 4, 2018
    Date of Patent: December 25, 2018
    Assignees: INVENTEC (PUDONG) TECHNOLOGY CORPORATION, INVENTEC CORPORATION
    Inventors: Chih-Cheng Li, Yung-Chin Hsieh
  • Patent number: 10069207
    Abstract: Disclosed herein is an antenna for WAVE communication, and more particularly, is an antenna for WAVE communication to which an electromagnetic bandgap is applied to a patch antenna. The antenna includes a dielectric substrate provided with conduction patterns formed on opposite surfaces thereof, first patches disposed on a first surface of the dielectric substrate at positions spaced apart from each other at regular intervals and conducted to each other, second patches disposed on a second surface of the dielectric substrate at positions spaced apart from each other at regular intervals and conducted to each other; a third patch provided in a bottom of the second surface of the dielectric substrate and conducted to the plurality of second patches, and a plurality of electromagnetic bandgap structures positioned on the first surface of the dielectric substrate and conducted to the second patches or the third patch by a through hole.
    Type: Grant
    Filed: February 8, 2017
    Date of Patent: September 4, 2018
    Assignee: INFAC ELECS CO., LTD.
    Inventors: Tae Hoon Yang, Jin Kyu Hwang
  • Patent number: 10014584
    Abstract: An antenna capable of being joined to an antenna feed perpendicular to a ground plane includes a conductive radiator and a cylindrical shell. The conductive radiator is tubular and has a longitudinal slot along the entire length thereof. The slot is parallel to the radiator's axis. The antenna feed can be connected across the slot. A cylindrical shell of a uniaxial dielectric material is provided outside and spaced apart from the conductive radiator and extends beyond ends of the conductive radiator. The cylindrical shell electrically contacts the ground plane. The shell is made from a material having a dielectric tensor with high impedance in the axial direction. This antenna gives enhanced bandwidth over ordinary slotted antennas. The shell can be applied to preexisting antennas.
    Type: Grant
    Filed: July 8, 2016
    Date of Patent: July 3, 2018
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: David A Tonn
  • Patent number: 9935374
    Abstract: A multi-band antenna includes a circuit board having an insulation dielectric layer, a first ground plane and an impedance matching circuit formed on a first plane of the circuit board, and a second ground plane formed on a second plane of the circuit board. A slot antenna radiation main body, formed at a location of the second ground plane and corresponding to the exposed part of the insulation dielectric layer, includes first and second radiation main bodies. The first radiation main body includes a first impedance matching part and a first resonance part. The second radiation main body includes a second impedance matching part and a second resonance part. The first resonance part includes a plurality of first bends, a first segment, and a second segment. The second resonance part includes a plurality of second bends, a third segment, and a fourth segment.
    Type: Grant
    Filed: August 2, 2016
    Date of Patent: April 3, 2018
    Assignee: Arcadyan Technology Corporation
    Inventor: Jing-Teng Chang
  • Patent number: 9847583
    Abstract: Systems according to the present disclosure provide one or more surfaces that function as power transferring surfaces for which at least a portion of the surface includes or is composed of “fractal cells” placed sufficiently closed close together to one another so that a surface (plasmonic) wave causes near replication of current present in one fractal cell in an adjacent fractal cell. A fractal of such a fractal cell can be of any suitable fractal shape and may have two or more iterations. The fractal cells may lie on a flat or curved sheet or layer and be composed in layers for wide bandwidth or multibandwidth transmission.
    Type: Grant
    Filed: September 14, 2015
    Date of Patent: December 19, 2017
    Inventor: Nathan Cohen
  • Patent number: 9793720
    Abstract: A near-field plate is a non-periodically patterned surface that can overcome the diffraction limit and confine electromagnetic fields to subwavelength dimensions. By controlling the interference of the electromagnetic fields radiated by the near-field plate with that of a source, the near-field plate can form a subwavelength near-field pattern in a forward direction, while suppressing fields in other directions, such as those reflected. The resulting unidirectional near-field plate may find utility in many applications such as high resolution imaging and probing, high density data storage, biomedical targeting devices, and wireless power transfer.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: October 17, 2017
    Assignee: THE REGENTS OF THE UNIVERSITY OF MICHIGAN
    Inventors: Anthony Grbic, Steve Young
  • Patent number: 9768516
    Abstract: Complementary metamaterial elements provide an effective permittivity and/or permeability for surface structures and/or waveguide structures. The complementary metamaterial resonant elements may include Babinet complements of “split ring resonator” (SRR) and “electric LC” (ELC) metamaterial elements. In some approaches, the complementary metamaterial elements are embedded in the bounding surfaces of planar waveguides, e.g. to implement waveguide based gradient index lenses for beam steering/focusing devices, antenna array feed structures, etc.
    Type: Grant
    Filed: December 4, 2014
    Date of Patent: September 19, 2017
    Assignee: Duke University
    Inventors: David R. Smith, Ruopeng Liu, Tie Jun Cui, Qiang Cheng, Jonah N. Gollub
  • Patent number: 9726989
    Abstract: A spectral purity filter includes a body of material, through which a plurality of apertures extend. The apertures are arranged to suppress radiation having a first wavelength and to allow at least a portion of radiation having a second wavelength to be transmitted through the apertures. The second wavelength of radiation is shorter than the first wavelength of radiation. The body of material is formed from a material having a bulk reflectance of substantially greater than or equal to 70% at the first wavelength of radiation. The material has a melting point above 1000° C.
    Type: Grant
    Filed: February 22, 2011
    Date of Patent: August 8, 2017
    Assignee: ASML NETHERLANDS B.V.
    Inventors: Wouter Anthon Soer, Vadim Yevgenyevich Banine, Erik Roelof Loopstra, Andrei Mikhailovich Yakunin, Martin Jacobus Johan Jak
  • Patent number: 9653767
    Abstract: A waveguide structure including a plurality of unit structures, each of which at least includes a first conductive plane and a second conductive plane, which are arranged to partially face with each other, a plurality of transmission lines with one ends being open ends, which are disposed in a plane, positioned opposite to the second conductive plane, in a layer different from the first conductive plane and the second conductive plane, and at least one conductive via, which electrically connect between the first conductive plane and other ends of the transmission lines.
    Type: Grant
    Filed: December 4, 2013
    Date of Patent: May 16, 2017
    Assignee: NEC CORPORATION
    Inventors: Hiroshi Toyao, Noriaki Ando
  • Patent number: 9614288
    Abstract: A device (10) for receiving and/or emitting an electromagnetic wave, comprising a medium (11) of dielectric material, a plurality of passive resonant elements (12) incorporated inside said medium, the plurality of passive resonant elements (12) comprising a frequency band-gap, two neighbor passive resonant elements belonging to the plurality being spaced apart from each other of a first distance lower than ?/4, and at least one active resonant element (13) incorporated inside said plurality, said active resonant element (13) having a second structure different from a first structure of the passive resonant elements (12), so that said active resonant element (13) has at least a second resonance frequency comprised inside the frequency band-gap of said plurality of passive elements (12).
    Type: Grant
    Filed: May 6, 2011
    Date of Patent: April 4, 2017
    Assignees: TIME REVERSAL COMMUNICATIONS, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS)
    Inventors: Geoffroy Lerosey, Christian Leray, Fabrice Lemoult, Julien De Rosny, Arnaud Tourin, Mathias Fink
  • Patent number: 9601836
    Abstract: A front feed microwave antenna, which comprises a radiation source, a first metamaterial panel used for radiating an electromagnetic wave emitted by the radiation source, a second metamaterial panel, and a reflective panel affixed to the back of the first metamaterial panel. The electromagnetic wave is emitted via the first metamaterial panel, refracted by entering the second metamaterial panel, reflected by the reflective panel, and finally re-refracted by reentering the second metamaterial panel, then finally parallel-emitted.
    Type: Grant
    Filed: November 24, 2011
    Date of Patent: March 21, 2017
    Assignee: KUANG-CHI INNOVATIVE TECHNOLOGY LTD.
    Inventors: Ruopeng Liu, Chunlin Ji, Yutao Yue, Xiaoming Yin
  • Patent number: 9594262
    Abstract: First and second coherent light beams of the same wavelength are propagated in opposite directions to interact on a sub-wavelength thickness metallic metamaterial layer which is structured with a periodicity such that there is a resonance matched to the wavelength of the coherent beams. The first beam is then able to modulate the intensity of the second beam by modulating the phase and/or intensity of the first beam. The interference of the counter- propagating beams can eliminate or substantially reduce Joule loss of light energy in the metamaterial layer or, on the contrary, can lead to a near total absorption of light, depending on the mutual phase and/or intensity of the interacting beams. A modulation is thus provided without using a non-linear effect.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: March 14, 2017
    Assignee: University of Southampton
    Inventors: Nikolay Ivanovich Zheludev, Kevin Francis MacDonald, Jianfa Zhang, David John Richardson
  • Patent number: 9568619
    Abstract: Passive components adapted for integration with at least one active semiconductor device, in an embodiment, comprise at least one metallic structure dimensioned and arranged to absorb and/or reflect a major fraction of incident electromagnetic radiation received at one or more wavelengths of a first group of wavelengths. This prevents radiation within the first group of wavelengths from being received and/or processed by the at least one active device. In an embodiment, one or more metallic structures are dimensioned and arranged to direct an amount of incident radiation, received at one or more wavelengths of a second group of wavelengths, sufficient to enable receiving or processing of incident radiation within the second group of wavelengths by the at least one active semiconductor device. In some embodiments, the passive component comprises a passive optical filter for use in spectroscopic applications, and the active semiconductor device is a detector or sensor.
    Type: Grant
    Filed: December 15, 2014
    Date of Patent: February 14, 2017
    Assignee: The Trustees of Princeton University Office of Technology and Trademark Licensing
    Inventors: Lingyu Hong, Kaushik Sengupta
  • Patent number: 9397406
    Abstract: An artificial magnetic conductor having a surface impedance greater than 100?, includes a ground plane, and a frequency-selective surface that is transparent for certain wavelengths and reflective for a range of wavelengths. The frequency-selective surface includes an array of conductive resonant elements arranged alongside one another in at least two different directions parallel to the ground plane. Each of these conductive resonant elements includes a sub-layer of ferromagnetic material having a relative permeability greater than 10 at a frequency of 2 GHz and having a thickness less than the skin thickness of the ferromagnetic material.
    Type: Grant
    Filed: October 27, 2011
    Date of Patent: July 19, 2016
    Assignee: Commissariat a l'energie atomique et aux energies alternatives
    Inventors: Francois Grange, Christophe Delaveaud, Bernard Viala
  • Patent number: 9385435
    Abstract: Surface scattering antennas provide adjustable radiation fields by adjustably coupling scattering elements along a wave-propagating structure. In some approaches, the scattering elements are patch elements. In some approaches, the scattering elements are made adjustable by disposing an electrically adjustable material, such as a liquid crystal, in proximity to the scattering elements. Methods and systems provide control and adjustment of surface scattering antennas for various applications.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: July 5, 2016
    Inventors: Adam Bily, Jeff Dallas, Russell J. Hannigan, Nathan Kundtz, David R. Nash, Ryan Allan Stevenson
  • Patent number: 9350082
    Abstract: A dual-band monopole coupling antenna is disclosed, which comprises: a first radiation part, configured with a frame and an extension section while being disposed on a surface of a substrate; a second radiation part, disposed on the surface of the substrate at a position neighboring to the first radiation part for enabling a coupling effect between the two, allowing the second radiation part to be used as an extension of the first radiation part, and thus adjusting the operation frequency, impedance and impedance matching accordingly; a signal ground section, disposed coupling to the second radiation part; a signal feed-in section, disposed on the surface at a position neighboring to the signal ground section while coupling to the first radiation part; a ground, disposed coupling to the second radiation part; and a dielectric layer, disposed at an non-conductive area arranged between the first radiation part and the second radiation part.
    Type: Grant
    Filed: February 21, 2014
    Date of Patent: May 24, 2016
    Assignee: ARCADYAN TECHNOLOGY CORPORATION
    Inventors: Chih-Yung Huang, Kuo-Chang Lo
  • Patent number: 9329261
    Abstract: Methods and systems for dynamic control of output power of a leaky wave antenna (LWA) are disclosed and may include configuring one or more LWAs in a wireless device to transmit RF signals at a desired frequency. The LWAs may be integrated in support structures, including an integrated circuit, an integrated circuit package, and/or a printed circuit board. Impedances that are coupled to the LWAs and to a power amplifier enabled to amplify the RF signals may be dynamically configured. A resonant frequency of the LWAs may be tuned, which may be configured to transmit the RF signals at a desired angle from a surface of the support structure. The LWAs may include microstrip or coplanar waveguides where a cavity height of the LWAs may be configured by controlling spacing between conductive lines in the waveguides. The impedances may include capacitor arrays and/or inductors in the support structures.
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: May 3, 2016
    Assignee: Broadcom Corporation
    Inventors: Ahmadreza Rofougaran, Maryam Rofougaran
  • Patent number: 9310520
    Abstract: An optical material which has a relative permeability different from 1 to light having a wavelength in, for example, the infrared region or shorter than the infrared region and which is stable in structure, and a liquid and a solid (optical element) using the optical material. The optical material is a powder used as a component of a liquid or solid to which an illuminating light is irradiated, and includes a large number of resonating elements which constitute the powder and each of which is formed of a conductor having a width approximately same as or smaller than a wavelength of the illumination light, and a protective film which is formed of a disc-shaped insulator, wherein an entire surface of each of the split-ring resonators is covered by the protective film.
    Type: Grant
    Filed: September 29, 2011
    Date of Patent: April 12, 2016
    Assignee: NIKON CORPORATION
    Inventors: Soichi Owa, Shunji Watanabe, Junji Suzuki, Kazuhiro Kido, Hidemitsu Toba
  • Patent number: 9257743
    Abstract: A system including a first dielectric layer comprising a solid material configured to form a first layer of a radome, and a second dielectric layer comprising a solid material configured to form a second layer of the radome. The first dielectric layer and the second dielectric layer are spaced apart to provide an inner gap configured as a third layer of the radome. The inner gap is exclusively filled with a gas. The radome is configured to provide for the radome to be frequency selective. A radome and method are also disclosed.
    Type: Grant
    Filed: February 19, 2013
    Date of Patent: February 9, 2016
    Assignee: LOCKHEED MARTIN CORPORATION
    Inventor: Vernon T. Brady
  • Patent number: 9231291
    Abstract: An electromagnetic bandgap structure is provided, which includes a ground layer; a first power layer facing an upper portion of the ground layer with a dielectric interposed and comprising at least one first patch and at least one first branch; and a second power layer facing an upper portion of the first power layer with a dielectric interposed and comprising at least one second patch and at least one second branch.
    Type: Grant
    Filed: July 1, 2013
    Date of Patent: January 5, 2016
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Myunghoi Kim, Jin Ho Jo, Jae Hoon Kim
  • Patent number: 9219313
    Abstract: An apparatus includes an antenna having multiple layers. At least a first of the layers includes both an effective medium and an electromagnetic bandgap (EBG) medium. The antenna could include a ground plane and a feed line, and the first layer of the antenna can be located between the ground plane and the feed line. The antenna could also include a slot ground and a planar antenna structure, and the first layer of the antenna could be located between the slot ground and the planar antenna structure. The antenna could further include a first substrate between a feed line and a slot ground and a second substrate covering a planar antenna structure, and the first layer could include one of the first and second substrates.
    Type: Grant
    Filed: January 25, 2013
    Date of Patent: December 22, 2015
    Assignee: Honeywell International Inc.
    Inventors: Ion Georgescu, Cazimir G. Bostan, Fouad Nusseibeh
  • Patent number: 9178284
    Abstract: The present disclosure relates to an electromagnetically transparent metamaterial, which comprises a substrate and a plurality of man-made metal microstructures arranged periodically inside the substrate. When an electromagnetic wave propagates through the metamaterial, each of the man-made metal microstructures is equivalent to two identical two-dimensional (2D) circuits, which are placed respectively in a direction perpendicular to an incident direction of the electromagnetic wave and in a direction parallel to the incident direction of the electromagnetic wave, and each of which comprises an inductor branch and two identical capacitor branches that are symmetrically connected in parallel with the inductor branch. The 2D circuits are associated with a waveband of the electromagnetic wave so that both a dielectric constant and a magnetic permeability of the metamaterial are substantially 1 when the electromagnetic wave propagates through the metamaterial.
    Type: Grant
    Filed: November 16, 2011
    Date of Patent: November 3, 2015
    Assignees: KUSNG-CHI INNOVATIVE TECHNOLOGY LTD., KUANG-CHI INSTITUTE OF ADVANCED TECHNOLOGY
    Inventors: Ruopeng Liu, Zhen Liao, Lin Luan, Zhiya Zhao
  • Patent number: 9178273
    Abstract: An antenna is integrated with a solar battery. The antenna has a radiation-element portion arranged above the solar battery. The radiation-element portion is made of metallic wire rods and formed in a net-like fashion.
    Type: Grant
    Filed: January 9, 2013
    Date of Patent: November 3, 2015
    Assignee: DENSO CORPORATION
    Inventor: Seishin Mikami
  • Patent number: 9166302
    Abstract: Arrangement of resonators in an aperiodic configurations are described, which can be used for electromagnetic cloaking of objects. The overall assembly of resonators, as structures, do not all repeat periodically and at least some of the resonators are spaced such that their phase centers are separated by more than a wavelength. The arrangements can include resonators of several different sizes and/or geometries arranged so that each size or geometry corresponds to a moderate or high “Q” response that resonates within a specific frequency range, and that arrangement within that specific grouping of akin elements is periodic in the overall structure. The relative spacing and arrangement of groupings can be defined by self similarity and origin symmetry. Fractal based scatters are described. Further described are bondary condition layer structures that can activate and deactive cloaking/lensing structures.
    Type: Grant
    Filed: March 25, 2010
    Date of Patent: October 20, 2015
    Assignee: Fractal Antenna Systems, Inc.
    Inventors: Nathan Cohen, Obinna Okoro, Phillip Salkind
  • Patent number: 9140234
    Abstract: Wind turbine rotor blades with a reduced radar cross sections include a shell having a leading edge opposite a trailing edge, a structural support member that supports the shell and is disposed internal the wind turbine rotor blade between the leading edge and the trailing edge and extends for at least a portion of a rotor blade span length, wherein the structural support member comprises carbon fiber, one or more cavities internal the wind turbine rotor blade, and a lightweight broadband radar absorbing filler material disposed in at least one of the one or more cavities to provide the reduced radar cross section.
    Type: Grant
    Filed: January 11, 2012
    Date of Patent: September 22, 2015
    Assignee: General Electric Company
    Inventors: Russell Craig Baucke, John Matthew Prescott, Lesly Sue Walters, Glen David Hilderbrand
  • Patent number: 9112475
    Abstract: An EBG (Electromagnetic Band Gap) structure according to an embodiment includes: an electrode that is made of a first conductor; a first insulating layer that is provided on the electrode; a patch unit that is provided in substantially parallel with the electrode on the first insulating layer, the patch unit including a first gap, the patch unit being made of a second conductor; a second insulating layer that is provided on the patch unit; a first via that is provided between the patch unit in the first insulating layer and the electrode and connected to the patch unit and the electrode; and a second via that is provided in the first and second insulating layers, the second via piercing the first gap and being connected to the electrode.
    Type: Grant
    Filed: July 26, 2013
    Date of Patent: August 18, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tadahiro Sasaki, Kazuhiko Itaya, Hiroshi Yamada
  • Patent number: 9093753
    Abstract: An artificial magnetic conductor includes a conductor layer, a ground layer, and a via. The conductor layer is formed in a first direction and includes a plurality of grid cells. The ground layer is formed in a second direction that is opposite to the first direction and generates a lower frequency than that of an artificial magnetic conductor including a plurality of grid cells having the same size as that of the plurality of grid cells of the conductor layer and a conductor plate having a form that is not modified. The via is formed between the conductor layer and the ground layer to electrically connect the conductor layer and the ground layer.
    Type: Grant
    Filed: December 23, 2010
    Date of Patent: July 28, 2015
    Assignee: INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY
    Inventors: Young Bae Jung, Soon Young Eom, Soon Ik Jeon, Young Joong Yoon, Jihwan Ahn, Ji Hwan Yoon
  • Patent number: 9088075
    Abstract: Methods and systems for configuring a leaky wave antenna (LWA) utilizing micro-electromechanical systems (MEMS) are disclosed and may include configuring a resonant frequency of one or more LWAs in a wireless device utilizing MEMS actuation. RF signals may be communicated using the LWAs. The LWAs may be integrated in metal layers in a chip, an integrated circuit package, and/or a printed circuit board in the wireless device. The LWAs may include microstrip waveguides where a cavity height of the LWAs may be dependent on a spacing between conductive lines in the microstrip waveguides. The LWAs may be configured to transmit the wireless signals at a desired angle. The integrated circuit package may be affixed to a printed circuit board and an integrated circuit may be flip-chip-bonded to the integrated circuit package. An air gap may be integrated adjacent to one or more of the metal layers for the MEMS actuation.
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: July 21, 2015
    Assignee: Broadcom Corporation
    Inventor: Ahmadreza Rofougaran
  • Patent number: 9035838
    Abstract: An antenna implementation comprises an electromagnetic lens and at least one electromagnetically shielding member. The electromagnetic lens is adapted to guide at least one electromagnetic signal by means of at least a variation in permittivity. The at least one electromagnetically shielding member encapsulates the electromagnetic lens partially so as to direct at least one electromagnetic signal propagating through the electromagnetic lens. The at least one electromagnetically shielding member can advantageously be part of an enclosure; said enclosure encapsulates partially the electromagnetic lens. The antenna can further comprise antenna transmission means that contain wave guides. Said waveguides can advantageously be incorporated into the enclosure. The antenna is particularly suited for implementations using Substrate Integrated Waveguide techniques. SIW techniques allow miniaturization of the antenna and offer the advantage of low energy consumption as may be required in portable devices.
    Type: Grant
    Filed: June 18, 2012
    Date of Patent: May 19, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Philippe Le Bars, Hervè Merlet, Mohammed Himdi, Olivier Lafond
  • Patent number: 9035850
    Abstract: The present disclosure relates to a metamaterial for diverging an electromagnetic wave, which comprises at least one metamaterial sheet layer. Refractive indices of the metamaterial sheet layer are distributed in a circular form with a center of the metamaterial sheet layer, and the refractive indices remain unchanged at a same radius and increase gradually with the radius. The present disclosure changes electromagnetic parameters at each point of the metamaterial through punching or by attaching man-made microstructures so that the electromagnetic wave can be diverged after passing through the metamaterial. The metamaterial of the present disclosure features a simple manufacturing process and a low cost, and is easy to be implemented. Moreover, the metamaterial of the present disclosure has small dimensions and does not occupy a large space, so it is easy to miniaturize apparatuses made of the metamaterial of the present disclosure.
    Type: Grant
    Filed: November 24, 2011
    Date of Patent: May 19, 2015
    Assignees: KUANG-CHI INNOVATIVE TECHNOLOGY LTD., KUANG-CHI INSTITUTE OF ADVANCED TECHNOLOGY
    Inventors: Ruopeng Liu, Chunlin Ji, Yutao Yue, Yunnan Hong
  • Patent number: 9030373
    Abstract: A method of manufacturing a transparent film for reducing electromagnetic waves includes forming a first dielectric layer and forming a pattern layer on the first dielectric layer. The pattern layer is made of a transparent electrode material having surface resistance.
    Type: Grant
    Filed: October 5, 2012
    Date of Patent: May 12, 2015
    Assignee: Electronics and Telecommunications Research Institute
    Inventor: Dong-Uk Sim
  • Patent number: 9030360
    Abstract: Embodiments of a phased array antenna having a plurality of unit cells, each unit cell utilizing an improved electromagnetic band gap (EBG) structure and a lossy material in connection with the EBG element are disclosed. The lossy material reduces the undesired coupling between the antenna radiator and the EBG, thus providing enhanced scanning performance in the phased array aperture.
    Type: Grant
    Filed: July 26, 2012
    Date of Patent: May 12, 2015
    Assignee: Raytheon Company
    Inventors: Jason E. Jerauld, David C. Cook
  • Publication number: 20150116187
    Abstract: Complementary metamaterial elements provide an effective permittivity and/or permeability for surface structures and/or waveguide structures. The complementary metamaterial resonant elements may include Babinet complements of “split ring resonator” (SRR) and “electric LC” (ELC) metamaterial elements. In some approaches, the complementary metamaterial elements are embedded in the bounding surfaces of planar waveguides, e.g. to implement waveguide based gradient index lenses for beam steering/focusing devices, antenna array feed structures, etc.
    Type: Application
    Filed: December 4, 2014
    Publication date: April 30, 2015
    Inventors: David R. SMITH, Ruopeng LIU, Tie Jun CUI, Qiang CHENG, Jonah N. GOLLUB
  • Patent number: 9013364
    Abstract: An electromagnetically operational micro-truss structure and methods are disclosed. A micro-truss structure comprises a grid of interlocking elements, and a metallic coating selectively coats the grid. The metallic coating is configured to resonate an electromagnetic energy.
    Type: Grant
    Filed: November 16, 2011
    Date of Patent: April 21, 2015
    Assignee: The Boeing Company
    Inventors: Daniel J. Gregoire, James H. Schaffner
  • Patent number: 9000997
    Abstract: A plurality of first conductor patterns (200) are insular electrode patterns located at a first layer. The first conductor patterns (200) are arranged in a repetitive pattern and are separated from each other. A second conductor pattern (100) is located at a second layer parallel to the first layer, and extends in a sheet shape in a region opposite the plurality of first conductor patterns (200). An opening (300) is provided in each of the plurality of first conductor patterns (200). Third conductor patterns (400) are located at the first layer and disposed in each of a plurality of openings (300). The third conductor patterns (400) are separated from the first conductor patterns (200). Connection conductors (500) connect the third conductor patterns (400) to the first conductor patterns (200).
    Type: Grant
    Filed: December 6, 2010
    Date of Patent: April 7, 2015
    Assignee: NEC Corporation
    Inventor: Noriaki Ando
  • Patent number: 8994609
    Abstract: A transmission line feed for a surface wave medium having a dielectric substrate with an array of electrically conductive patches formed thereon. The transmission line feed includes a microstrip substrate, the microstrip substrate having a first permittivity which is lower than a second permittivity of the dielectric substrate of the surface wave medium, the microstrip substrate abutting against the dielectric substrate of the surface wave medium; a tapered microstrip disposed on the microstrip substrate, the tapered microstrip tapering from a relatively narrow end to a relatively wide end, the relative wide end terminating where the microstrip substrate abuts against the surface wave substrate; and an adapter for coupling a transmission line to the relatively narrow end of the tapered microstrip.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: March 31, 2015
    Assignee: HRL Laboratories, LLC
    Inventor: Daniel J. Gregoire
  • Publication number: 20150084835
    Abstract: A frequency selective surface includes resonators (104) which are spherically shaped and have an arrangement which defines a periodic array (103) of rows (112) and columns (114). The periodic array extends in at least two orthogonal directions. A registration structure (602) is provided and arranged so that it at least partially maintains a position of each of the resonators in a predetermined spatial relationship with respect to adjacent ones of the plurality of resonators to define the array. Each of the resonators is formed of a conductive material and is electrically insulated from adjacent ones of the resonators forming the array by an insulator material.
    Type: Application
    Filed: September 20, 2013
    Publication date: March 26, 2015
    Applicant: HARRIS CORPORATION
    Inventors: Christopher Snyder, Stephen Landers, Gregory M. Jandzio, Maria Cardinal
  • Patent number: 8988759
    Abstract: An apparatus to modify an incident free space electromagnetic wave includes a block of an artificially structured material having an adjustable spatial distribution of electromagnetic parameters (e.g., ?, ?, ?, ?, and n). A controller applies control signals to dynamically adjust the spatial distribution of electromagnetic parameters in the material to introduce a time-varying path delay d(t) in the modified electromagnetic wave relative to the incident electromagnetic wave.
    Type: Grant
    Filed: July 26, 2010
    Date of Patent: March 24, 2015
    Inventors: Jeffrey A. Bowers, Roderick A. Hyde, Jordin T. Kare, Nathan Kundtz, Bruce Marshall McWilliams, John Brian Pendry, David Schurig, David R. Smith, Anthony F. Starr, Clarence T. Tegreene, Lowell L. Wood, Jr.
  • Patent number: 8981998
    Abstract: Provided is a built-in transmitting and receiving integrated radar antenna whose coverage of a horizontal radiation pattern is widened and whose space factor is improved by integrating high-frequency circuit component onto an antenna substrate while suppressing unnecessary waves. A first dielectric substrate (111) is formed into a three-layered structure in which a bias line (171) of an MIC is disposed between a second layer (111b) and a third layer (111c) and a second ground plane (114) is disposed between the first layer (111a) and the second layer (111b). Also, the second ground plane (114) is conductively connected with isolated through-holes (163, 164), so that a domain in which a feeding port (115) is disposed is isolated from a domain (B) in which the bias line (171) is disposed.
    Type: Grant
    Filed: October 2, 2012
    Date of Patent: March 17, 2015
    Assignees: Furukawa Electric Co., Ltd., Furukawa Automotive System Inc.
    Inventors: Nobutake Orime, Daisuke Inoue, Naotaka Uchino, Yoichi Iso
  • Patent number: 8982011
    Abstract: A method of and apparatus for mitigating adverse transmission and/or reception effects that an obstruction would otherwise have upon a RF signal to be transmitted or received, the RF signal being available at a feed point and wherein the obstruction is spaced from the feed point in a direction of desired transmission or reception. An artificial impedance surface is disposed adjacent the feed point and the obstruction, and the artificial impedance surface is designed (i) to have a spatially non-varying impedance function in a constant impedance region at least immediately adjacent the feed point and (ii) to have a non-constant impedance function in one or more regions spaced from the feed point and closer to the obstruction.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: March 17, 2015
    Assignee: HRL Laboratories, LLC
    Inventors: Daniel J. Gregoire, Joseph S. Colburn
  • Publication number: 20150070244
    Abstract: The antenna focusing ring disclosed herein is configured for use with any given subscriber module (antenna). The antenna focusing ring may also be used to focus and concentrate the electromagnetic signal generated by the subscriber module onto a parabolic reflector antenna used in the transmission of data over wireless transmission systems. The antenna focusing ring described herein is used to increase signal gain in the wireless data transmission system by focusing and thereby correcting the poor illumination of an internal patch antenna within the given subscriber module.
    Type: Application
    Filed: June 9, 2014
    Publication date: March 12, 2015
    Inventor: James Charles McCown
  • Publication number: 20150070245
    Abstract: Provided are an artificial atom of a metamaterial by coiling up space, a metamaterial including the artificial element, and a device including the metamaterial. The artificial atom of the metamaterial by coiling up space includes a first coiling unit that coils up a first space and a second coiling unit that coils up a second space and that is connected with the first coiling unit.
    Type: Application
    Filed: March 15, 2013
    Publication date: March 12, 2015
    Applicants: CITY UNIVERSITY OF HONG KONG, SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seung-hoon Han, Jensen Tsan-Hang Li, Zixian Liang
  • Patent number: 8976077
    Abstract: A tunable impedance surface, the tunable surface including a plurality of elements disposed in a two dimensional array; and an arrangement of variable negative reactance circuits for controllably varying negative reactance between at least selected ones of adjacent elements in the aforementioned two dimensional array.
    Type: Grant
    Filed: April 6, 2012
    Date of Patent: March 10, 2015
    Assignee: HRL Laboratories, LLC
    Inventors: Joseph S. Colburn, Carson R. White, Daniel J. Gregoire
  • 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
  • Patent number: 8976078
    Abstract: A device for receiving and/or emitting an electromagnetic wave having a free space wavelength ?0 comprised between 1 mm and 10 cm, comprising a medium (11) of solid dielectric material and the free space wavelength ?0 corresponding to a wavelength ? inside the medium, a plurality of conductor elements (12) incorporated inside the medium and spaced apart from each other of a distance lower than ?/10, and one antenna element (13). The conductor elements are not loop elements. A tuned conductor element among the conductor elements has a first end at a distance from the antenna element which is lower than ?/10, and has a length Hwire adapted to generate an electromagnetic resonance in the tuned conductor element corresponding to the wavelength ?.
    Type: Grant
    Filed: November 9, 2010
    Date of Patent: March 10, 2015
    Assignees: Time Reversal Communications, Centre National de la Recherche Scientifique—CNRS
    Inventors: Julien De Rosny, Geoffroy Lerosey, Arnaud Tourin, Mathias Fink, Fabrice Lemoult
  • Publication number: 20150054713
    Abstract: An electromagnetic band gap element is provided. In the electromagnetic band gap element, a first planar conductor and a second planar conductor are respectively formed on a first plane and a second plane which are parallel to each other, and a first linear conductor is formed on at least one third plane that is parallel to the first plane and the second plane and is located between the first plane and the second plane. The first planar conductor and the second planar conductor are connected via the first linear conductor.
    Type: Application
    Filed: August 7, 2014
    Publication date: February 26, 2015
    Inventor: Atsushi Takasaki
  • Patent number: 8957831
    Abstract: In one embodiment an artificial magnetic conductor assembly to reflect an electromagnetic signal with a phase shift that measures between ?90 degrees and +90 degrees at a target frequency comprises a first ground plane, a plurality of metallic elements disposed at a first distance from the first ground plane, a plurality of capacitors coupling adjacent metallic elements of the plurality of metallic elements, and a dielectric substrate disposed between the first ground plane and the array of metallic elements and formed from a material having a relative permittivity that measures between 1 and 20.
    Type: Grant
    Filed: March 30, 2010
    Date of Patent: February 17, 2015
    Assignee: The Boeing Company
    Inventors: Daniel J. Gregoire, Carson R. White
  • Patent number: 8952856
    Abstract: A transmission/reception element includes: a plurality of metal layers each disposed with space from another; and a switch for controlling electrical coupling between the metal layers. The switch includes a contact-point group including a plurality of contact-point pairs each disposed in parallel between each two of the metal layers, and a drive section mechanically driving the contact-point group for state change of each of the contact-point pairs between in-contact and no-contact.
    Type: Grant
    Filed: January 12, 2011
    Date of Patent: February 10, 2015
    Assignee: SonyCorporation
    Inventors: Akira Akiba, Koichi Ikeda