Logarithmically Periodic Patents (Class 343/792.5)
  • Patent number: 10326196
    Abstract: According to an embodiment of the present disclosure, an antenna device implemented in a display device may comprise a dielectric layer provided in the display device, an antenna area disposed in a surface of the dielectric layer provided in a transparent area of the display device and having at least one or more antenna patterns transmitting or receiving an electromagnetic wave through a plurality of conductive grids, a power feeding area provided in at least one of the transparent area and an opaque area of the display device and having a power feeding pattern providing a signal current to the antenna pattern through the plurality of conductive grids, and a transmission line portion connecting a substrate portion provided in the display device with the power feeding pattern. Further, the antenna device according to the present disclosure may also be implemented in other various embodiments.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: June 18, 2019
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Yoon-Geon Kim, Won-Bin Hong, Seung-Tae Ko
  • Patent number: 10243251
    Abstract: An antenna includes a ground element defining a straight edge extending along a first axis. A radiating element is spaced apart from the ground element. A feeding element has a first conductor coupled to the ground element and a second conductor coupled to the radiating element. The radiating element includes two radiating segments extending substantially parallel to one another along a second axis transverse to the first axis with each radiating segment defining a width measured perpendicular to the second axis. The width of one radiating segment is greater than the width of the other radiating segment. A coupling portion connects the radiating segments and includes a straight edge facing the straight edge of the ground element. The straight edge of the coupling portion extends along a third axis that is transverse to the first axis. When combined with a substrate, the antenna is a component of a window assembly.
    Type: Grant
    Filed: July 31, 2015
    Date of Patent: March 26, 2019
    Assignees: AGC AUTOMOTIVE AMERICAS R&D, INC., AGC FLAT GLASS NORTH AMERICA, INC.
    Inventors: Gurkan Gok, Jesus Gedde
  • Patent number: 10186780
    Abstract: A new and comparatively small type of open-ended microwave applicators has been disclosed. They are for example suitable for transmission into and reception from contacting objects such as protruding human bodyparts for inhomogeneity detection by tomographic methods. The applicators according to the invention are of the dielectric-filled open-ended ridged rectangular TE10 type, with an insert filling the ridge and having a higher permittivity than the surrounding space. The shape of the insert can be as a frustrum pyramid towards the opening. The overall design promotes narrow beamwidths and minimizes nearfields and surface wave excitation.
    Type: Grant
    Filed: May 4, 2015
    Date of Patent: January 22, 2019
    Inventors: Per Olov Risman, Magnus Otterskog, Nikola Petrovic
  • Patent number: 10177833
    Abstract: Systems and methods for capture, recording, and regeneration of subtle energy resonance signals are described herein. A system for capturing and recording the signals may include an antenna array disposed within an electromagnetic shield, a signal processor, and a memory coupled to at least one processor. The antenna array may include at least one antenna comprising a conductive disk and an amplifier circuit board, the antenna array detecting and receiving subtle energy resonance signals from a source. The signal processor converts the analog signals into digital signals, which are then stored into the memory. The electromagnetic shield houses the antenna array and minimizes electromagnetic interference with the received signal. Such a controlled environment ensures the purity of the recorded subtle energy resonance signals for regeneration.
    Type: Grant
    Filed: June 27, 2017
    Date of Patent: January 8, 2019
    Assignee: Chi-Box, Inc.
    Inventors: Lorie Peters Lauthier, Norman Boyce
  • Patent number: 9997831
    Abstract: A compact, wideband antenna system includes first and second monopole radiating elements positioned near an edge of a common ground plane. The first and second monopole radiating elements may be located on opposite sides of the ground plane. Additional monopole elements may also be provided. In some embodiments, the ground plane includes an opening in a central region thereof to accommodate an optical system. In some embodiments, an additional antenna (e.g., an array antenna) may be provided over the same ground plane in a region between the monopole elements.
    Type: Grant
    Filed: November 21, 2014
    Date of Patent: June 12, 2018
    Assignee: Raytheon Company
    Inventors: Glafkos K. Stratis, Douglas Mills, Jeffrey Wadsworth, Mark A. Owens
  • Patent number: 9935378
    Abstract: Antenna apparatus includes a system ground and an antenna sub-assembly including a feed pad and a ground pad that are configured to have a cable terminated thereto. The ground pad is electrically coupled to the system ground. The antenna sub-assembly includes a first level having a radiating trace that is electrically coupled to the feed pad. The radiating trace is configured for communication within a designated radio frequency (RF) band. The antenna sub-assembly also includes a second level that is stacked with respect to the first level and has a reflector. The reflector is vertically aligned with a portion of the radiating trace to block RF emissions therefrom.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: April 3, 2018
    Assignee: TE Connectivity Corporation
    Inventors: Eduardo Lopez Camacho, Bruce Foster Bishop
  • Patent number: 9806406
    Abstract: Provided is a plasma antenna. The plasma antenna includes a radiation portion formed by stacking a plurality of radiation disks generating plasma based on provided energy and radiating a signal using the generated plasma, an energy generation portion configured to provide the energy to at least one of the plurality of radiation disks, and a signal transmission portion configured to provide the signal to the at least one radiation disk provided with the energy. Therefore, it is possible to support multiple frequency bands.
    Type: Grant
    Filed: January 23, 2015
    Date of Patent: October 31, 2017
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Kwang Chun Lee, Cheol Ho Kim, Gweon Do Jo
  • Patent number: 9799956
    Abstract: A three-dimensional compound loop antenna is provided, including a ground plane, a pair of horizontal conductive portions substantially horizontal relative to the ground plane, a feed line substantially vertical relative to the ground plane, and a vertical conductive portion coupling the pair of horizontal conductive portions to the ground plane.
    Type: Grant
    Filed: December 11, 2013
    Date of Patent: October 24, 2017
    Assignee: DOCKON AG
    Inventors: Ryan James Orsi, Matthew Robert Foster
  • Patent number: 9779868
    Abstract: A compact impedance transformer is disclosed having a first dielectric substrate, a first planar conductor disposed on a top surface of the first dielectric substrate in a loop, a second planar conductor disposed on a bottom surface of the first dielectric substrate in a second loop, wherein the first planar conductor and the second planar conductor are substantially identical and in stacked alignment. A second dielectric substrate has a third planar conductor disposed on a top surface of the second dielectric substrate in a third loop, and a fourth planar conductor disposed on a bottom surface of the second dielectric substrate in a fourth loop, wherein the third planar conductor and the fourth planar conductor are substantially identical and in stacked alignment. An interconnect structure between terminals of the first planar conductor, the second planar conductor, the third planar conductor, and the fourth planar conductor provide impedance transformations.
    Type: Grant
    Filed: April 30, 2015
    Date of Patent: October 3, 2017
    Assignee: Qorvo US, Inc.
    Inventor: James Burr Hecht
  • Patent number: 9728844
    Abstract: A high-gain digitally tuned antenna system comprises a modified swept-back fractal (MSBF) radiator element, with the fractal preferably being a Sierpinski carpet fractal based on a parallelogram. A digital tuning circuit coupled to the radiator comprises an array of inductors which can be selectively connected to form a network which tunes the antenna system to a selected tuning frequency. The system is preferably arranged to selectively connect the inductors in series such that the combined inductances substantially cancel the capacitance of the radiator at a selected tuning frequency. The antenna system is preferably arranged to operate over the 30-88 MHz, 108-174 MHz, and 225-600 MHz bands, with a radiator height of 15? or less.
    Type: Grant
    Filed: June 11, 2014
    Date of Patent: August 8, 2017
    Assignee: SENSOR SYSTEMS, INC.
    Inventors: Zhen Biao Lin, Jack J. Q. Lin, Seymour Robin
  • Patent number: 9692116
    Abstract: An antenna arrangement including: a conductive ground element having a first end and a second end; an antenna element at a first end; a first conductive part extending from the conductive ground element and a second conductive part extending from conductive ground element and separated from the first conductive part by a gap.
    Type: Grant
    Filed: September 19, 2008
    Date of Patent: June 27, 2017
    Assignee: Nokia Technologies Oy
    Inventors: Ping Hui, Jari Kristian Van Wonterghem, Chris Hynes
  • Patent number: 9686621
    Abstract: A hearing aid with an assembly, the assembly includes: a first side; a second side; a signal processor; a wireless communications unit, the wireless communications unit being connected to the signal processor; and a monopole antenna for electromagnetic field emission and electromagnetic field reception, the antenna being connected to the wireless communications unit, the antenna having an excitation point; wherein at least a part of a first branch of the antenna extends from the excitation point along the first side of the assembly, the first branch having a first end, the first end being free or being coupled with the excitation point via a third branch; and wherein a second branch of the antenna extends from the excitation point, at least a part of the second branch extending in a space located between the first side of the assembly and the second side of the assembly.
    Type: Grant
    Filed: March 10, 2014
    Date of Patent: June 20, 2017
    Assignee: GN Hearing A/S
    Inventors: Birol Akdeniz, Jens Henrik Steffens
  • Patent number: 9444145
    Abstract: An antenna, especially for use with a handheld RFID reader for scanning RFID tags oriented in different orientations, includes a feeding port located on an axis for supplying an RF signal to a primary antenna member for transmitting and receiving electromagnetic waves. A secondary antenna member is juxtaposed with the primary antenna member for re-radiating the electromagnetic waves propagated by the primary antenna member. Each antenna member includes one antenna element extending in a radial direction away from the axis and continuing along at least one turn in a turning direction at least partly about the axis, and another antenna element extending in an opposite radial direction away from the axis and continuing along at least one turn in the turning direction at least partly about the axis. The electromagnetic waves have congruent slant polarizations each having components in both of two mutually orthogonal planes to read the tags.
    Type: Grant
    Filed: March 4, 2014
    Date of Patent: September 13, 2016
    Assignee: Symbol Technologies, LLC
    Inventor: Yiu Kwong Chan
  • Patent number: 9413070
    Abstract: The present invention relates to an augmented antenna capable of operating in a wider frequency band, and receiving and reradiating radio signals. The augmented antenna includes radiation patterns formed using a plurality of radiation slots having multiple coupling regions. The radiation patterns are symmetrically connected and impedance-matched to transmit and receive radio signals, thereby improving a radio wave propagation environment.
    Type: Grant
    Filed: November 23, 2011
    Date of Patent: August 9, 2016
    Assignee: BROCOLI CO., LTD.
    Inventor: Joo Yeol Lee
  • Patent number: 9337542
    Abstract: A planar antenna comprising: a substrate, a resonant element generating an electromagnetic wave, a plurality of parallel, spaced apart conductive strips on the substrate, wherein conductive strips form collinear rows of at least two strips that are physically separated by a slot to guide the electromagnetic wave in a specific direction.
    Type: Grant
    Filed: November 28, 2012
    Date of Patent: May 10, 2016
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: William O. Coburn, Amir I. Zaghloul
  • Patent number: 9322864
    Abstract: According to some embodiments, a system is provided for simulating a cluster of reflections. The system includes an array of antenna elements distributed in space over a solid angle having an angular spread. The solid angle is substantially less than a full sphere and each antenna element has a spatial orientation. The system also includes a spatial environment simulator connected to the antenna elements and configured to apply one of excitations to the antenna elements and weights to signals from the antenna elements. The combination of the spatial distribution of the antenna elements, the orientation of the antenna elements, and the weighting applied by the variable path simulator simulates a near field arising from a cluster of reflections of a multipath environment.
    Type: Grant
    Filed: March 22, 2013
    Date of Patent: April 26, 2016
    Assignee: ETS-Lindgren, LP
    Inventor: Michael Foegelle
  • Patent number: 9208427
    Abstract: A contactless communication medium includes: a base material made of an insulating material; an antenna coil portion formed by winding a conductor in a plane on the base material; a capacitor connected to the antenna coil portion; a communication processing section connected to the antenna coil portion and the capacitor to perform a contactless communication process; and a metal pattern having a predetermined area and disposed in a region surrounded by the antenna coil portion, the metal pattern being not electrically connected to the antenna coil portion or the capacitor.
    Type: Grant
    Filed: April 29, 2011
    Date of Patent: December 8, 2015
    Assignee: SONY CORPORATION
    Inventors: Keisuke Sato, Sachio Saitoh
  • Patent number: 9077083
    Abstract: A dual polarized array antenna is disclosed. The array antenna includes a plurality of electrically conductive elements or posts, arranged in rows and columns. Multiple parallel slots are formed that intersect different rows and columns of electrically conductive elements. The slots receive feed elements that include a linear array of feed points. The feed points within each linear array alternate between a feed point associated with a first polarization and a feed point associated with a second polarization.
    Type: Grant
    Filed: August 1, 2012
    Date of Patent: July 7, 2015
    Assignee: BALL AEROSPACE & TECHNOLOGIES CORP.
    Inventors: Paul J. Freeman, Vlad Munteanu, Scott P. Bates, Thomas Caly, Travis Horne
  • Patent number: 9059507
    Abstract: An antenna assembly generally includes dielectric mounting members coupling at least one pair of bow tie antennas to an antenna support. A reflector is coupled to the antenna support. One or more pairs of electrical conductors extend between a balun and the at least one pair of bow tie antennas. The one or more pairs of electrical conductors electrically connect the balun with the at least one pair of bow tie antennas. The one or more pairs of electrical conductors include portions that are bent inwards generally towards the at least one reflector to create an impedance transformer and an improved impedance match at a feed point of the balun. The dielectric mounting members include one or more recessed portions or slots configured for providing a stop for angled electrical conductor portions of the electrical conductors and for providing a stop for straight electrical conductor portions of the electrical conductors.
    Type: Grant
    Filed: December 8, 2014
    Date of Patent: June 16, 2015
    Inventors: Richard E. Schneider, John Edwin Ross, III, Corey Feit
  • Patent number: 9019143
    Abstract: This invention relates to improved ultra-wideband synthetic aperture radar and inverse synthetic aperture radar, capable of simultaneously and independently imaging a plurality of spectral and polarimetric channels covering multiple radio frequency octaves. Advances in technologies relating to signal processing, graphical user interfaces, color representations of multi-spectral radar images, low aerodynamic drag polarimetric SAR antenna systems, and synthetic aperture radar aircraft platforms are some of the advancements disclosed herein.
    Type: Grant
    Filed: November 30, 2007
    Date of Patent: April 28, 2015
    Inventor: Henry K. Obermeyer
  • Patent number: 9007271
    Abstract: A foldable log-periodic antenna includes a feed line, one or more transmitting elements for transmitting and/or receiving electromagnetic signals, one or more supporting elements for holding the transmitting elements, and one or more elements for producing a tensile stress on the transmitting elements. One of the a transmitting elements is connected to one of the supporting elements and to the feed line, and with one supporting element is connected to the feed line via an articulated joint apparatus, such that the antenna can be moved from a transport position to an operating position and vice versa. The one or more elements for producing a tensile stress on the transmitting elements is a flexible tube, and can have an internal pressure applied to them and are connected to the supporting elements for holding the transmitting elements.
    Type: Grant
    Filed: June 24, 2010
    Date of Patent: April 14, 2015
    Assignee: EADS Deutschland GmbH
    Inventors: Marc Harscher, Herbert Heidrich, Joerg Logemann
  • Patent number: 8976073
    Abstract: In the field of wideband directional antennas employing linear polarization, and in particular in the context of amplitude goniometry systems, polarization purity defects lead to deformation of the radiation diagrams that increases with the elevation, inducing degraded detection system location performance. An antenna is provided operating with linear polarization and having radiating elements of “sinuous” shape inscribed within a circle, and includes radiating elements printed on the two faces of a support, the elements of the first face being deduced from those of the other face by a rotation.
    Type: Grant
    Filed: April 7, 2011
    Date of Patent: March 10, 2015
    Assignee: Thales
    Inventors: Michel Jousset, Gaetan Guevel, Gaelle Samson
  • Publication number: 20150061955
    Abstract: An antenna array includes a plurality of antenna elements configured in a flare such that each of the plurality of antenna elements is uniformly spaced apart from at least one adjacent antenna element. Each of the plurality of antenna elements is coupled in a common area, and each of the plurality of antenna elements extends radially outward from the common area. A method of arranging antenna elements in an antenna array includes configuring a plurality of antenna elements in a flare such that each antenna element is uniformly spaced apart from at least one adjacent antenna element, and each of the plurality of antenna elements extends radially outward from a common area; and coupling each of the plurality of antenna elements in the common area.
    Type: Application
    Filed: September 2, 2014
    Publication date: March 5, 2015
    Inventor: John Howard
  • Publication number: 20140232605
    Abstract: A log-periodic dipole array antenna according to one exemplary embodiment of the present disclosure includes a dielectric substrate, a radiating element having a plurality of lines extending from a center to an outer side and symmetrically arranged on the dielectric substrate based on the center, so as to resonate in a first frequency band and a second frequency band, the plurality of lines being connected at the center or the outer side of the radiating element in an alternating manner, the lines becoming longer going from up to down of the radiating element fed according to a predetermined long-periodic ratio, and a band stopper formed on one point for connecting the lines to each other
    Type: Application
    Filed: August 28, 2013
    Publication date: August 21, 2014
    Applicant: AGENCY FOR DEFENSE DEVELOPMENT
    Inventors: Min Sung KIM, Chan Yik PARK, Byung Gil YU, Ho Joon JANG
  • Patent number: 8766866
    Abstract: A log periodic antenna includes first and second transmission lines parallel with each other; and a plurality of broadband radiation elements having first sides electrically connected to the first and second transmission lines, a predetermined angle being defined between the first sides of the broadband radiation elements and the first and second transmission lines, and second sides not electrically connected with the first and second transmission lines, the second sides having radiation surfaces larger than radiation surfaces of the first sides. A plurality of broadband radiation elements electrically connected with the first transmission line and a plurality of broadband radiation elements electrically connected with the second transmission line are positioned to face each other with reference to the first and second transmission lines.
    Type: Grant
    Filed: June 18, 2010
    Date of Patent: July 1, 2014
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Haeng-Sook Ro, Gwang-Moon Park, Sang-Tae Kim, Seong-Yun Lee, Mi-Kyung Suk, Heung-Yong Kang, Yong-Seok Choi
  • Patent number: 8749451
    Abstract: A wideband antenna with backlobe elimination in a confined space is disclosed. Backlobe elimination is by an array of electromagnetically conductive members disposed between the spiral element and the ground plane and almost contacting the ground plane so as to bleed a backlobe away from the spiral antenna to the ground plane. In one embodiment, the members are conical elements disposed between the spiral element and the ground plane of a spiral antenna such that the apexes of the conical elements almost contact the spiral element and the bases of the conical elements contact the ground plane. In some embodiments, other means may be employed to perform this function. In operation, conical elements bleed the backlobe of the signal away from the spiral element to the ground plane.
    Type: Grant
    Filed: February 15, 2011
    Date of Patent: June 10, 2014
    Assignee: Lockheed Martin Corporation
    Inventors: J. Michael Zamarron, Umang R. Patel, Kurt S. Schuder
  • Patent number: 8698693
    Abstract: A collapsible antenna (10) comprises an elongate boom (12) having a main axis (14) and a plurality of elongate radiating elements (16) having respective first ends (18.1) and respective second ends (18.2). At least some of the elongate radiating elements are flexible and are mounted at the respective first ends to the boom in longitudinally spaced relation. Regions towards the respective second ends of the at least some of the elongate radiating elements engage a flexible rope (20). The flexible rope forms part of a frame (22) which is manipulatable relative to the boom between a first collapsed configuration and a second operative configuration wherein the at least some radiating elements are in an operative configuration relative to the boom.
    Type: Grant
    Filed: March 10, 2011
    Date of Patent: April 15, 2014
    Assignee: Poynting Antennas (PTY) Limited
    Inventors: Jürgen Dresel, Thomas David Abbott
  • Patent number: 8638269
    Abstract: A non-planar, ultra-wide band, quasi-self-complementary feed antenna is disclosed. The antenna provides an invariant phase center location over its entire frequency band, is compact and includes a low profile, and includes input matching better than is currently available over a decade of frequency bandwidth. The very compact feed couples dual polarization electromagnetic energy to a transmitter from free space or air with minimum losses and mismatches over a very wide frequency band.
    Type: Grant
    Filed: June 5, 2008
    Date of Patent: January 28, 2014
    Assignee: Cornell University
    Inventor: German Cortes-Medellin
  • Patent number: 8558748
    Abstract: A printed dual-band Yagi-Uda antenna is disclosed, which includes a substrate, a first driver, a first director, a second driver and a reflector. The first driver is formed on the substrate, and is utilized for generating a radiation pattern of a first frequency band. The first director is formed at a side of the first driver on the substrate, and is utilized for directing the radiation pattern of the first frequency band toward a first direction. The second driver is formed between the first driver and the first director on the substrate, and is utilized for generating a radiation pattern of a second frequency band. The reflector is formed at another side of the first driver on the substrate, and is utilized for reflecting both the radiation patterns of the first frequency band and the second frequency band toward the first direction.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: October 15, 2013
    Assignee: Ralink Technology Corp.
    Inventors: Xin-Chang Chen, Min-Chung Wu
  • Publication number: 20130207864
    Abstract: In the field of wideband directional antennas employing linear polarization, and in particular in the context of amplitude goniometry systems, polarization purity defects lead to deformation of the radiation diagrams that increases with the elevation, inducing degraded detection system location performance. An antenna is provided operating with linear polarization and having radiating elements of “sinuous” shape inscribed within a circle, and includes radiating elements printed on the two faces of a support, the elements of the first face being deduced from those of the other face by a rotation.
    Type: Application
    Filed: April 7, 2011
    Publication date: August 15, 2013
    Applicant: THALES
    Inventors: Michel Jousset, Gaetan Guevel, Gaelle Samson
  • Patent number: 8482463
    Abstract: The invention relates to an antenna structure for coupling electromagnetic energy between a chip and an off-chip element, including a first resonant structure disposed on or in a chip. The first resonant structure is configured to have a first resonant frequency. The antenna structure also includes a second resonant structure disposed on or in an off-chip element. The second resonant structure is configured to have a second resonant frequency substantially the same as the first resonant frequency. The first resonant structure and the second resonant structure are mutually disposed within a near field distance of each other to form a coupled antenna structure that is configured to couple electromagnetic energy between the chip and the off-chip element. The electromagnetic energy has a selected wavelength in a wavelength range from microwave to sub-millimeter wave. The invention also relates to a method of calculating dimensions for a highly coupled antenna structure.
    Type: Grant
    Filed: May 22, 2009
    Date of Patent: July 9, 2013
    Assignee: California Institute of Technology
    Inventors: Aydin Babakhani, Seyed Ali Hajimiri
  • Patent number: 8264410
    Abstract: A planar broadband beam-steering phased array antenna with approximately 10:1 bandwidth is comprised of planar broadband traveling wave antenna elements positioned parallel to a conducting ground plane and spaced less than 0.5 wavelength at the highest operating frequency and more than 0.01 wavelengths at the lowest operating frequency. Each planar traveling wave antenna element is a planar frequency-independent antenna or planar self-complementary antenna, and is truncated to fit a unit cell of the phased array. Adjacent antenna elements are arranged to be tightly coupled together or connected with each other and spaced less than 0.5 wavelength apart between their centers throughout its operating frequency range. One or more layers of dielectric or magneto-dielectric substrates/superstrates can be added to enhance specific performances.
    Type: Grant
    Filed: July 31, 2007
    Date of Patent: September 11, 2012
    Assignee: Wang Electro-Opto Corporation
    Inventor: Johnson J. H. Wang
  • Patent number: 8209846
    Abstract: Methods for assembling an active array system are described. In one exemplary embodiment, an active subarray panel assembly having a first surface with a first array of electrical contacts and a radiator aperture with an array of radiator structures and an aperture mounting surface with a second array of electrical contacts are assembled together. The first surface of the panel assembly and the aperture mounting surface of the radiator aperture are brought into contact with an adhesive layer including microwave interconnects in a pattern corresponding to the first array of electrical contacts and the second array of electrical contacts so that the adhesive layer is between the first surface of the panel assembly and the aperture mounting surface of the radiator aperture. Pressure, heat and vacuum are applied to cure the adhesive and complete engagement of the microwave interconnects.
    Type: Grant
    Filed: September 25, 2009
    Date of Patent: July 3, 2012
    Assignee: Raytheon Company
    Inventors: Avery Y. Quil, Clifton Quan, Alec Ekrnekjl, Jason G. Milne
  • Patent number: 8193997
    Abstract: Directional wide band antenna that may be utilized to enhance cell phone coverage within a building, or for signals intelligence collection (SIGINT). Includes a log-spiral slot antenna with feed-point configured to transfer energy to/from the antenna. Includes an energy absorbent backing and an energy absorbent siding coupled with the log-spiral slot antenna. Includes a cavity behind the log-spiral slot antenna and in front of the energy absorbent backing. Includes a cable connector coupled to a tapered microstrip line coupled to the feed-point wherein the tapered microstrip line is configured to transform the input impedance to the antenna impedance. Housed in a container configured to hold the above listed components. Energy absorbent siding, cavity and energy absorbent backing greatly reduces back lobes. Another embodiment has log-spiral shaped slots at an outer portion of the log-spiral slot antenna overlap with the energy absorbent siding and wherein the feed-point overlaps the cavity.
    Type: Grant
    Filed: August 20, 2009
    Date of Patent: June 5, 2012
    Assignee: Antennasys, Inc.
    Inventor: Spencer Webb
  • Publication number: 20120133566
    Abstract: A foldable log-periodic antenna includes a feed line, one or more transmitting elements for transmitting and/or receiving electromagnetic signals, one or more supporting elements for holding the transmitting elements, and one or more elements for producing a tensile stress on the transmitting elements. One of the a transmitting elements is connected to one of the supporting elements and to the feed line, and with one supporting element is connected to the feed line via an articulated joint apparatus, such that the antenna can be moved from a transport position to an operating position and vice versa. The one or more elements for producing a tensile stress on the transmitting elements is a flexible tube, and can have an internal pressure applied to them and are connected to the supporting elements for holding the transmitting elements.
    Type: Application
    Filed: June 24, 2010
    Publication date: May 31, 2012
    Applicant: Eads Deutschland GMBH
    Inventors: Marc Harscher, Herbert Heidrich, Joerg Logemann
  • Patent number: 8164535
    Abstract: A CPW fed planar log-periodic antenna is provided. The antenna includes: an upper substrate; a planar log-periodic antenna structure formed beneath the upper substrate; a CPW-fed structure formed on the upper substrate for feeding energy into the planar log-periodic antenna structure; a lower substrate disposed beneath the upper substrate; and a wire structure formed beneath the lower substrate. The antenna of the present invention features efficient reduction of cross polarized radiation and thereby enhancing the performance.
    Type: Grant
    Filed: March 20, 2009
    Date of Patent: April 24, 2012
    Assignee: National Taiwan University
    Inventor: Yi-Cheng Lin
  • Patent number: 8130162
    Abstract: The invention describes a broadband multi-dipole antenna that has low input reflection coefficient, low cross polarization, rotationally symmetric beam and constant beam width and phase center location over several octaves bandwidth. The dipoles are fed from one or a few feed points, and they may with advantage have log-periodic dimensions. The antenna is more compact, has lighter weight and is cheaper to manufacture than other solutions. It is very well suited for feeding single, dual or multi-reflector antennas.
    Type: Grant
    Filed: August 9, 2004
    Date of Patent: March 6, 2012
    Assignee: Kildal Antenna Consulting AB
    Inventor: Per-Simon Kildal
  • Patent number: 8068065
    Abstract: A concentric ring, log-periodic slot antenna used for direction finding is disclosed. There are a number of continuous, circular slots nested inside of each other. A cover over the slots cavities has excitation plates and conductors thereon. There are four excitation plates spaced ninety degrees apart over each circular slot, and the excitation plates of all slots in each ninety degree sector are electrically interconnected. A conductor from the interconnected excitation plates in each of the four sectors conducts received signals to a Butler matrix which processes the signals and provides Mode 0, Mode +1, Mode ?1, and Mode ? outputs. These Mode outputs are used to provide direction finding information for DF signal sorting, and they may be used to provide radio frequency voltages to other equipment to provide accurate DF (CIDF) and CIGL transmitter geo-location information.
    Type: Grant
    Filed: April 7, 2009
    Date of Patent: November 29, 2011
    Assignee: BAE Systems Information and Electronic Systems Integration Inc.
    Inventor: Keith A. Struckman
  • Publication number: 20110227802
    Abstract: Disclosed is a log periodic antenna and a manufacturing method thereof. In the log periodic antenna, antenna elements are attached to an antenna body to thereby simplify a structure of the antenna, the antenna can be manufactured in various designs without restriction to the configuration of the antenna, and the number of contacting points between the antenna element and a feeder is minimized to thereby simplify the manufacturing process. By the antenna, it is possible to produce the log periodic antenna of the simple structure and of various designs without the restriction to the antenna configuration by attaching the signal pattern and ground pattern to the pattern receiving surface.
    Type: Application
    Filed: November 24, 2010
    Publication date: September 22, 2011
    Applicant: MENIX CO., LTD.
    Inventors: Keyng Hun KIM, Seung Kyo Park, Chan Kuk Kim
  • Publication number: 20110221646
    Abstract: A collapsible antenna (10) comprises an elongate boom (12) having a main axis (14) and a plurality of elongate radiating elements (16) having respective first ends (18.1) and respective second ends (18.2). At least some of the elongate radiating elements are flexible and are mounted at the respective first ends to the boom in longitudinally spaced relation. Regions towards the respective second ends of the at least some of the elongate radiating elements engage a flexible rope (20). The flexible rope forms part of a frame (22) which is manipulatable relative to the boom between a first collapsed configuration and a second operative configuration wherein the at least some radiating elements are in an operative configuration relative to the boom.
    Type: Application
    Filed: March 10, 2011
    Publication date: September 15, 2011
    Applicant: POYNTING ANTENNAS (PTY) LIMITED
    Inventors: Jürgen DRESEL, Thomas David ABBOTT
  • Publication number: 20110148729
    Abstract: A log periodic antenna includes first and second transmission lines parallel with each other; and a plurality of broadband radiation elements having first sides electrically connected to the first and second transmission lines, a predetermined angle being defined between the first sides of the broadband radiation elements and the first and second transmission lines, and second sides not electrically connected with the first and second transmission lines, the second sides having radiation surfaces larger than radiation surfaces of the first sides. A plurality of broadband radiation elements electrically connected with the first transmission line and a plurality of broadband radiation elements electrically connected with the second transmission line are positioned to face each other with reference to the first and second transmission lines.
    Type: Application
    Filed: June 18, 2010
    Publication date: June 23, 2011
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Haeng-Sook RO, Gwang-Moon Park, Sang-Tae Kim, Seong-Yun Lee, Mi-Kyung Suk, Heung-Yong Kang, Yong-Seok Choi
  • Patent number: 7924234
    Abstract: A cladding (2) for a microwave antenna comprises at least one plate (3a, 3b, 3c, 3d) which has, in a first section plane (x=0; y=0), a cross section in the shape of a logarithmic spiral, characterized in that the plate (3a, 3b, 3c, 3d) has a cross section in the shape of a logarithmic spiral also in at least one second section plane perpendicular to the first one.
    Type: Grant
    Filed: August 22, 2006
    Date of Patent: April 12, 2011
    Assignee: Ericsson AB
    Inventor: Jochen Christ
  • Patent number: 7907098
    Abstract: A log periodic antenna comprises a plurality of radiating elements in an end fire configuration, each radiating element in the plurality of radiating elements comprises a conductor, and at least two shunt inductances connected to the conductor; a substrate connecting the plurality of radiating elements; and a log periodic stripline feed pathway superimposed on the substrate. The height of each radiating element of the plurality of radiating elements is about one hundredth the size of the wavelength and the length is about 0.14 the size of the wavelength at the lowest operating frequency of the log periodic antenna. The plurality of radiating elements is configured to produce impedance and radiation characteristics that are regularly repetitive as a logarithmic function of an excitation of frequency without performance degradation.
    Type: Grant
    Filed: October 2, 2007
    Date of Patent: March 15, 2011
    Assignee: Rockwell Collins, Inc.
    Inventor: James B. West
  • Patent number: 7786947
    Abstract: There is provided a broadband antenna including: an insulating block having opposing first and second main surfaces and a side surface between the first and second main surfaces; a first radiator pattern formed on the first main surface and having a tapered slot with an open end; and a second radiator pattern including two patterns connected to opposing ends of the first radiator pattern, respectively, and extending to the second main surface.
    Type: Grant
    Filed: August 29, 2007
    Date of Patent: August 31, 2010
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Seok Bae, In Young Kim
  • Publication number: 20100207836
    Abstract: A non-planar, ultra-wide hand, quasi-self-complementary feed antenna is disclosed. The antenna provides an invariant phase center location over its entire frequency band, is compact and includes a low profile, and includes input matching better than is currently available over a decade of frequency bandwidth. The very compact feed couples dual polarization electromagnetic energy to a transmitter from free space or air with minimum losses and mismatches over a very wide frequency band.
    Type: Application
    Filed: June 5, 2008
    Publication date: August 19, 2010
    Applicant: Cornell University
    Inventor: German Cortes-Medellin
  • Publication number: 20100182212
    Abstract: A CPW fed planar log-periodic antenna is provided. The antenna includes: an upper substrate; a planar log-periodic antenna structure formed beneath the upper substrate; a CPW-fed structure formed on the upper substrate for feeding energy into the planar log-periodic antenna structure; a lower substrate disposed beneath the upper substrate; and a wire structure formed beneath the lower substrate. The antenna of the present invention features efficient reduction of cross polarized radiation and thereby enhancing the performance.
    Type: Application
    Filed: March 20, 2009
    Publication date: July 22, 2010
    Applicant: NATIONAL TAIWAN UNIVERSITY
    Inventor: Yi-Cheng Lin
  • Patent number: 7750856
    Abstract: An antenna includes at least one element whose physical shape is at least partially defined as a second or higher iteration deterministic fractal. The resultant fractal antenna does not rely upon an opening angle for performance, and may be fabricated as a dipole, a vertical, or a quad, among other configurations. The number of resonant frequencies for the fractal antenna increases with iteration number N and more such frequencies are present than in a prior art Euclidean antenna. Further, the resonant frequencies can include non-harmonically related frequencies. At the high frequencies associated with wireless and cellular telephone communications, a second or third iteration, preferably Minkowski fractal antenna is implemented on a printed circuit board that is small enough to fit within the telephone housing.
    Type: Grant
    Filed: July 17, 2007
    Date of Patent: July 6, 2010
    Inventor: Nathan Cohen
  • Patent number: 7750860
    Abstract: A helmet substrate is covered with a highly absorptive layer and an antenna layer. The antenna layer includes a conformal log periodic dipole array wherein adjacent antenna elements connect through switches. By driving appropriate ones of the switches, the log periodic dipole array tunes to a desired frequency band.
    Type: Grant
    Filed: September 7, 2006
    Date of Patent: July 6, 2010
    Inventor: Farrokh Mohamadi
  • Patent number: 7742004
    Abstract: An on-vehicle antenna system which offers a superior receiving performance, by suppressing reception of reflected/scattered waves coming from inside of the vehicle's cabin; these reflected/scattered waves being an adverse factor which deteriorates signal receiving performance of an antenna. The antenna system is installed at glass pane portion of a vehicle with direction (12) of the greatest radiation pattern (11) directed towards ahead (14) of the vehicle from boundary plane (10) containing power supply portion (9), while direction (13) of the smallest radiation pattern (11) towards behind (15) of the vehicle. The above-configured antenna system can suppress those waves reflected/scattered in the vehicle cabin from being received; as the result, it demonstrates improved characteristics.
    Type: Grant
    Filed: April 3, 2006
    Date of Patent: June 22, 2010
    Assignee: Panasonic Corporation
    Inventors: Susumu Fukushima, Akihiro Hoshiai
  • Patent number: RE44332
    Abstract: An antenna assembly having an operating frequency and a vertical radiation pattern with a main lobe axis defining a downtilt angle with respect to the earth's surface. The antenna assembly comprises a plurality of antennas in first, second, and third antenna groups physically disposed along a backplane, the backplane having a longitudinal axis along which the antennas are disposed, and a phase adjustment mechanism disposed electrically connected between the second first and third antenna groups, such that adjustment of the phase adjustment mechanism results in variation of the vertical radiation pattern downtilt angle.
    Type: Grant
    Filed: December 29, 2003
    Date of Patent: July 2, 2013
    Assignee: Andrew LLC
    Inventors: Peter Mailandt, Tan Huynh