Balanced To Unbalanced Circuit Patents (Class 343/821)
  • Patent number: 10812020
    Abstract: Pulsed radiation is generated at a power level that depends on a voltage level, frequency and duty cycle of a pulsed high voltage. A pulsing switch generates the pulsed high voltage from a high voltage and a pulse control signal. The pulsing switch has first and second bi-polar active switches connected in series between a high voltage conductor and a ground conductor. The pulsed high voltage is produced at a connection between the first and second bi-polar active switches when the first and second bi-polar active switches are repeatedly pulsed on and off to alternatingly connect the high voltage conductor and the ground conductor to a pulsed voltage output.
    Type: Grant
    Filed: August 19, 2019
    Date of Patent: October 20, 2020
    Assignee: Lyten, Inc.
    Inventors: Michael W. Stowell, Tung Van Pham
  • Patent number: 10581146
    Abstract: A broadband stacked multi-spiral antenna array comprising two or more spiral antennas with a dielectric layer having a generally uniform thickness positioned between each pair of stacked antennas, which are all center-fed and in-phase. The antenna array may be embedded in a non-conductive material, such as fiberglass embedded in a resin, a honeycomb core sandwich, or structural foam, that may be used to form a structural element of a mobile platform. The structural element may include a via providing a pathway for coaxial cables. If two structural elements are hatch covers on the port and the starboard sides of an aircraft, the use of a stacked multi-spiral antenna array in each structural element provides two roughly hemispherical coverage patterns which together provide an omni-directional coverage pattern. The stacked multi-spiral antenna array may also include a reflecting cavity placed at the bottom of one of the spiral antennas.
    Type: Grant
    Filed: October 9, 2018
    Date of Patent: March 3, 2020
    Assignee: THE BOEING COMPANY
    Inventors: Ronald O'Neil Lavin, Manny S. Urcia
  • Patent number: 10320088
    Abstract: A balanced wideband impedance transformer can include a first conductor layer including a first metal line and a second metal line, a second conductor layer including a first feed line and disposed on the first conductor layer, a third conductor layer including a second feed line and disposed on the second conductor layer, and a fourth conductor layer including a third metal line and a fourth metal line, and disposed on the third conductor layer.
    Type: Grant
    Filed: November 13, 2018
    Date of Patent: June 11, 2019
    Assignee: The Florida International University Board of Trustees
    Inventors: Alexander Johnson, Elias Alwan, John L. Volakis
  • Patent number: 10132884
    Abstract: A circular dipole antenna (e.g., for a magnetic imaging system) according to exemplary embodiments of the present disclosure can comprise a circular conductor with a feed point on one side and a gap on the other. A surface coil loop antenna (e.g., for magnetic imaging system) is provided with a capacitor arrangement selected for non-uniform or unbalanced current distribution, with corresponding magnetic and electric dipole fields provided in a single structure referred to as a loopole.
    Type: Grant
    Filed: November 17, 2014
    Date of Patent: November 20, 2018
    Assignee: New York University
    Inventors: Karthik Lakshmanan, Martijn Cloos, Graham Charles Wiggins
  • Patent number: 9391358
    Abstract: A disclosed antenna device includes a substrate made of a dielectric material, an antenna element formed on one side of the substrate, and a ground element formed on another side of the substrate.
    Type: Grant
    Filed: March 12, 2012
    Date of Patent: July 12, 2016
    Assignee: FUJITSU COMPONENT LIMITED
    Inventors: Masahiro Yanagi, Shigemi Kurashima, Hideaki Yoda
  • Publication number: 20150130659
    Abstract: The planar antenna has a dielectric substrate; an antenna main body portion including first and second antenna elements on first and second sides, respectively, of the dielectric substrate and functioning as a balanced antenna; a signal line portion including first and second feed lines on the first and second sides, respectively, and a coplanar line on the first side and formed by a signal line and the first ground conductors, the signal line connected to the first feed line; a second ground conductor on the second side and connected to the second feed line; and via holes connecting the first ground conductors to the second ground conductor provided at ends of edges of the first ground conductors facing the end of the signal line where the signal line connects to the first feed line, to allow the first and second feed lines to function as balanced transmission lines.
    Type: Application
    Filed: November 6, 2014
    Publication date: May 14, 2015
    Inventors: Yasunari MORI, Kyouji DOI, Takayoshi YUMII, Yumi ASANO
  • Publication number: 20150123864
    Abstract: Antenna elements are described that may include a radiator, a feeding portion, a first impedance transformer, a balun, and a second impedance transformer. The first impedance transformer, balun, and second impedance transformer may be disposed above a ground plane of an antenna array to reduce a bulk of the array. The array can also include a dielectric top layer for loading apertures of the antenna array. The antenna elements can also include anomaly suppressors can be provided to cancel common-mode resonances from the radiators.
    Type: Application
    Filed: November 5, 2013
    Publication date: May 7, 2015
    Applicant: SI2 Technologies, Inc.
    Inventor: Anatoliy BORYSSENKO
  • Publication number: 20150116176
    Abstract: Embodiments of the present invention disclose a dipole antenna and a wireless terminal device, which relate to communications technologies and enable an antenna to have a relatively high performance and a relatively low production cost. The dipole antenna includes a first radiation arm, a second radiation arm, and a balun. The first radiation arm and the second radiation arm are both soldered on a dielectric substrate. The first radiation arm and the second radiation arm are separately connected to the balun electrically. The balun is electrically connected to a feeding point and a reference ground separately. The present invention may be applied to a terminal device.
    Type: Application
    Filed: August 29, 2014
    Publication date: April 30, 2015
    Inventors: Yiwen Gong, Kemeng Wang, Yunpeng Shen, Yuhui Wang, Dejin Zhu
  • Patent number: 8982006
    Abstract: A dipole antenna is disclosed. The dipole antenna includes a feed-in terminal, a balun, a first radiator and a second radiator. The feed-in terminal is used for feeding in a radio-frequency signal. The balun is electrically connected to the feed-in terminal for driving out a return current of the dipole antenna to balance a feed-in impedance of the dipole antenna. The first radiator is electrically connected to the feed-in terminal and the balun for radiating the radio-frequency signal in a first frequency band. The second radiator is electrically connected to the first radiator, the feed-in terminal and the balun for radiating the radio-frequency signal in a second frequency band.
    Type: Grant
    Filed: January 24, 2013
    Date of Patent: March 17, 2015
    Assignee: Wistron NeWeb Corporation
    Inventors: Chih-Ming Wang, Kuan-Chung Chen, Yu-Yu Chiang
  • Patent number: 8957824
    Abstract: A broadband dipole antenna is provided, in which a radiator includes a plurality of radiation pattern units for transmitting and receiving a radio signal, the radiation pattern units have radiation patterns of resonators formed thereon, and a power supply and balun structure supports and supplies power to the radiator. Each of the plurality of radiation pattern units of the radiator has at least a dual radiation pattern structure having an inner radiation pattern and an outer radiation pattern.
    Type: Grant
    Filed: September 2, 2010
    Date of Patent: February 17, 2015
    Assignee: KMW Inc.
    Inventors: Oh-Seog Choi, Young-Chan Moon, Heon-Jeong Jeong
  • Patent number: 8760356
    Abstract: A broadband radiation unit includes first and second pairs of symmetric dipoles operable to transmit communication signals and to receive communication signals. The first pair of symmetric dipoles has a polarization that is orthogonal to that of the second pair of symmetric dipoles. The first and second pairs of symmetric dipoles together define an annular structure. A plurality of baluns are associated with the first and second pairs of symmetric dipoles such that a given one of the baluns is associated with a respective symmetric dipole of the pairs of symmetric dipoles. Each one of the baluns feeds a balanced current to its associated symmetric dipole. Each symmetric dipole of the first and second pairs of symmetric dipoles has two unit arms which are disposed on and arranged symmetrically about its associated balun.
    Type: Grant
    Filed: August 1, 2008
    Date of Patent: June 24, 2014
    Assignee: Comba Telecom System (China) Ltd.
    Inventors: Binlong Bu, Peitao Liu, Shanqiu Sun, Songdong Fan, Xiaobing Su
  • 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: 8736500
    Abstract: An antenna apparatus that has a base and an antenna element with a balanced RF output, which receives RF signals within a first band of frequencies. The apparatus includes a mount engaged with the base that rotatably supports the antenna about an axis of rotation. The apparatus has a balun with a balanced RF input and an unbalanced RF output. A feed line is coupled between the balanced RF output and the balanced RF input. The feed line includes two electrical conductors that have a predetermined length and that are aligned substantially in parallel, and supportively spaced apart a predetermined distance by plural insulators. The feed line is further arranged to maintain the predetermined distance between the two electrical conductors as the antenna element rotates with respect to the base.
    Type: Grant
    Filed: August 5, 2009
    Date of Patent: May 27, 2014
    Assignee: RadioShack Corporation
    Inventor: Alan Man Lung Lam
  • Publication number: 20140132469
    Abstract: A dipole antenna is disclosed. The dipole antenna includes a feed-in terminal, a balun, a first radiator and a second radiator. The feed-in terminal is used for feeding in a radio-frequency signal. The balun is electrically connected to the feed-in terminal for driving out a return current of the dipole antenna to balance a feed-in impedance of the dipole antenna. The first radiator is electrically connected to the feed-in terminal and the balun for radiating the radio-frequency signal in a first frequency band. The second radiator is electrically connected to the first radiator, the feed-in terminal and the balun for radiating the radio-frequency signal in a second frequency band.
    Type: Application
    Filed: January 24, 2013
    Publication date: May 15, 2014
    Applicant: Wistron NeWeb Corporation
    Inventors: Chih-Ming Wang, Kuan-Chung Chen, Yu-Yu Chiang
  • Publication number: 20140111396
    Abstract: The height of crossed-dipoles antenna elements can be reduced by including an additional bend/segment in the feed-line and/or tuning-stub of the antenna dipole having the upper slot. The extra bend allows the crossed-dipoles antenna element to be shortened by as much as twenty percent without reducing the feed-line length. Additionally, the height of crossed-dipoles antenna elements can be reduced by shaping a winged portion of the balun-fed dipoles to match the contour of a radome contour, which allows the crossed-dipoles antenna element to accommodate a shallower radome and achieve a thinner antenna module. Additionally, the height of crossed-dipoles antenna elements can be reduced by positioning periodic structures around the base of low-band radiating elements to provide artificial magnetic conductor (AMC) functionality, which enables constructive interference between reflected and non-reflected signals at profile spacings of less than one-quarter wavelength.
    Type: Application
    Filed: June 10, 2013
    Publication date: April 24, 2014
    Inventors: Fayez Hyjazie, Paul Watson, Halim Boutayeb
  • Patent number: 8648759
    Abstract: Provided herein are devices, systems and techniques for establishing a variable height conformal antenna array having a planar backplane. More particularly, positioning of radiating elements can be made insensitive to variable ground height by selecting a suitable radiating element, such as a flared notch and arranging them to have a profile such that their outer extremities are positioned along a conformal, curved shape. Differences in radiator heights can be taken up by the addition of parallel vertical ground planes disposed between the radiating elements and the backplane. Adjacent vertical ground planes effectively form cutoff waveguide sections that naturally isolate the backplane from the radiating elements. The vertical ground planes edges effectively form a virtual curved ground for the radiating elements, following curvature of the array profile. Accordingly, heights of radiating elements are uniform with respect to the virtual ground, while being allowed to vary with respect to the backplane.
    Type: Grant
    Filed: September 30, 2011
    Date of Patent: February 11, 2014
    Assignee: Raytheon Company
    Inventors: Allen Wang, Fangchou Yang, Jason G. Milne
  • Publication number: 20130342415
    Abstract: A polymorphic antenna, including a metallic template configurable in at least first and second possible different three-dimensional shapes, the antenna, when configured in the at least first and second different three-dimensional shapes, having a common antenna feed point, a common balun coupled to the common antenna feed point; and a common dipole coupled to the common antenna feed point and to the common balun. The antenna operates in a common frequency band when configured in either of the at least first and second different three-dimensional shapes when fed via the common antenna feed point.
    Type: Application
    Filed: August 23, 2013
    Publication date: December 26, 2013
    Applicant: GALTRONICS CORPORATION LTD.
    Inventors: Randell COZZOLINO, Gary WANNAGOT, Snir AZULAY
  • Patent number: 8610635
    Abstract: This document describes designs and techniques for directly feeding an unbalanced transmission line with a balanced antenna using Composite Right and Left Handed (CRLH) and balun structures. According to various examples, first and second radiating elements, first and second antenna structures, or first and second portions of an antenna structure can provide a left-handed (LH) mode resonance and a right-handed (RH) mode resonance. A feed port can provide an unbalanced signal, and a balun structure can be coupled to the first and second radiating elements, first and second antenna structures, or first and second portions of an antenna structure, to adapt the unbalanced signal from the feed port to a balanced signal for coupling to the first and second radiating elements, first and second antenna structures, or first and second portions of an antenna structure.
    Type: Grant
    Filed: March 3, 2010
    Date of Patent: December 17, 2013
    Inventors: Wei Huang, Vladimir Penev, Vaneet Pathak, Gregory Poilasne
  • Publication number: 20130314288
    Abstract: An integrated differential high power amplifier-radiator array that overcomes the prior art impedance match issues is described. An impedance matching balun is used to feed a high output impedance, differential HPA, which in turn drives a wide band radiator or array of radiators having a matching input impedance to provide a highly efficient, compact transmit system. In one exemplary embodiment, the HPA may be a high impedance Class-B HPA configured as a push-pull cascode amplifier. A high impedance isolator or circulator may be used between the HPA and the radiator. One of ordinary skill in the art will readily appreciate that a receive implementation, using a properly matched low noise amplifier in place of the HPA, is also possible. Similarly, with the addition of a slotline circulator, transceiver operation is also attainable with the addition of an impedance matched receive chain.
    Type: Application
    Filed: May 24, 2012
    Publication date: November 28, 2013
    Applicant: RAYTHEON COMPANY
    Inventors: Reza TAYRANI, Walter B. SCHULTE, JR., James A. CARR, Jar J. LEE
  • Publication number: 20130307742
    Abstract: The invention relates to a balanced antenna system comprising a radiator connected via a matching circuit to a balun. In certain embodiments, the radiator comprises a first radiating element and a second radiating element and the matching circuit comprises a first impedance-matching circuit connected to the first radiating element and a second impedance-matching circuit connected to the second radiating element. The first and second matching circuits may be identical and are connected through the balun to a single port. To minimise the component count, the design of the matching circuit and balun is co-optimised.
    Type: Application
    Filed: November 11, 2011
    Publication date: November 21, 2013
    Applicant: The University of Birmingham
    Inventors: Zhen Hua Sampson Hu, Peter Hall
  • Patent number: 8519903
    Abstract: A polymorphic antenna, including a metallic template configurable in at least first and second possible different three-dimensional shapes, the antenna, when configured in the at least first and second different three-dimensional shapes, having a common antenna feed point, a common balun coupled to the common antenna feed point; and a common dipole coupled to the common antenna feed point and to the common balun. The antenna operates in a common frequency band when configured in either of the at least first and second different three-dimensional shapes when fed via the common antenna feed point.
    Type: Grant
    Filed: June 19, 2012
    Date of Patent: August 27, 2013
    Assignee: Galtronics Corporation Ltd.
    Inventors: Randell Cozzolino, Gary Wannagot, Snir Azulay
  • Publication number: 20130187822
    Abstract: A wideband dual-polarized radiation element includes two pairs of cross polarized dipoles and baluns which correspondingly feed current to each dipole in a balanced manner. Each dipole includes a pair of unit arms aligned on a top end of the corresponding balun. One end of each unit arm is connected on top of the balun, and the other end of one unit arm is bending inwards to form inward loaded line, and the other unit arm is bending downwards to form downward loaded line. An antenna includes a metal reflector and at least one wideband dual polarized radiation element, which has excellent radiation and polarization performance.
    Type: Application
    Filed: March 12, 2013
    Publication date: July 25, 2013
    Applicant: TONGYU COMMUNICATION INC.
    Inventor: TONGYU COMMUNICATION INC.
  • Patent number: 8482474
    Abstract: An antenna apparatus that can be miniaturized without causing inference caused by antenna currents to be occurred if the high band of a dual band wireless system is close to the band of another wireless system in a wireless communication apparatus incorporating the dual band wireless system and another wireless system is provided. A first switch 5 blocks passage of a signal of a high band (first frequency) and allows passage of a signal of a low band (second frequency). A second switch 6 blocks passage of a signal of the low band (second frequency) and allows passage of a signal of the high band (first frequency). Accordingly, the antenna apparatus operates as a dipole antenna with no antenna current flowing into a feeder line at the first frequency and operates as a monopole antenna wherein a radiation element and a feeder line making up the dipole antenna becomes a radiation element at the second frequency lower than the first frequency.
    Type: Grant
    Filed: May 11, 2009
    Date of Patent: July 9, 2013
    Assignee: Panasonic Corporation
    Inventors: Junnei Baba, Masatoshi Ootsuka, Tetsuya Ashizuka
  • Patent number: 8462073
    Abstract: An antenna module having a side-edge balance-to-unbalance (BALUN). The antenna module may include a flexible substrate with one or more layers that may be configured to receive one first and second conductive patterns, the substrate may have opposed first and second ends which may define a longitudinal length and/or opposed side edges situated between the first and second ends. The first conductive pattern may form an antenna loop situated adjacent to the first end of the flexible substrate and be suitable for transmitting or receiving signals at one or more frequencies. The second conductive pattern may form at least part of the BALUN and may include one or more of a center portion, side portions which may extend from the center portion at opposite sides of the center portion, and electrically neutral slots situated between a corresponding side portion and the center portion.
    Type: Grant
    Filed: July 31, 2010
    Date of Patent: June 11, 2013
    Assignee: Motorola Solutions, Inc.
    Inventor: Aviv Shachar
  • Patent number: 8391927
    Abstract: An antenna structure includes first and second antennas. The first antenna has a first geometry corresponding to a first frequency. The second antenna has a second geometry corresponding to a second frequency. The second antenna is proximal to the first antenna and utilizes electrical-magnetic properties of the first antenna to transceive signals at the second frequency.
    Type: Grant
    Filed: June 12, 2010
    Date of Patent: March 5, 2013
    Assignee: Broadcom Corporation
    Inventors: Jesus Alfonso Castaneda, Franco De Flaviis, Ahmadreza (Reza) Rofougaran
  • Patent number: 8350774
    Abstract: A double balun dipole antenna element includes a dielectric substrate having a first surface and an opposing second surface, a pair of coplanar Marchand baluns positioned in a mutually antiphase configuration on the first and second surfaces, and at least one feed line connected to the pair of Marchand baluns. A doubly polarized antenna element includes a pair of orthogonally interleaved double balun dipole antenna elements, which can be further configured into an array of such antenna elements.
    Type: Grant
    Filed: September 12, 2008
    Date of Patent: January 8, 2013
    Assignee: The United States of America, as represented by the Secretary of the Navy
    Inventor: William R. Pickles
  • Publication number: 20120256803
    Abstract: A polymorphic antenna, including a metallic template configurable in at least first and second possible different three-dimensional shapes, the antenna, when configured in the at least first and second different three-dimensional shapes, having a common antenna feed point, a common balun coupled to the common antenna feed point; and a common dipole coupled to the common antenna feed point and to the common balun. The antenna operates in a common frequency band when configured in either of the at least first and second different three-dimensional shapes when fed via the common antenna feed point.
    Type: Application
    Filed: June 19, 2012
    Publication date: October 11, 2012
    Applicant: GALTRONICS CORPORATION LTD.
    Inventors: Randell COZZOLINO, Gary WANNAGOT, Snir AZULAY
  • Patent number: 8270907
    Abstract: Aspects of a method and system for matching an integrated system to an antenna utilizing on-chip measurement of reflected signals are provided. In a chip comprising at least a portion of a receiver and at least a portion of a transmitter, a best impedance match between an antenna and the chip may be determined based on on-chip measurement of one or more signals reflected from the antenna. The best impedance match between the antenna and the chip may be determined utilizing a correction algorithm. The correction algorithm may be determined utilizing data from an external test set that measures signals transmitted by the chip via the antenna. The reflected signals may be routed to a signal analyzer via on on-chip directional coupler. The best impedance match may be determined for each of a plurality of frequencies and/or each of a plurality of transmit signal strengths.
    Type: Grant
    Filed: April 5, 2011
    Date of Patent: September 18, 2012
    Assignee: Broadcom Corporation
    Inventor: Thomas Baker
  • Patent number: 8228257
    Abstract: A broadband antenna system is disclosed. The antenna system relates to a modified conical structure, wherein the feed region of the cone is cut away to form a hollow “coneless” cylinder, and the distribution of one or more tapered feed points around the circumference of the cylinder allows a plurality of feed lines, cables, piping, or other structures to be run through the center of the antenna without interfering with the performance of the antenna system. The invention further relates to a stacked broadband antenna system wherein additional coneless elements, as well as other types of antennas or devices, may be stacked collinearly on, or disposed coaxially to, the cylindrical antenna structure, and fed, powered or operated via the plurality of feed lines, cables, piping or other structures. The overall system may thus provide a wide range of transmitting, receiving, sensing and other capabilities.
    Type: Grant
    Filed: March 20, 2009
    Date of Patent: July 24, 2012
    Assignee: FIRST RF Corporation
    Inventor: Farzin Lalezari
  • Patent number: 8203499
    Abstract: A polymorphic antenna, including a metallic template configurable in at least first and second possible different three-dimensional shapes, the antenna, when configured in the at least first and second different three-dimensional shapes, having a common antenna feed point, a common balun coupled to the common antenna feed point; and a common dipole coupled to the common antenna feed point and to the common balun. The antenna operates in a common frequency band when configured in either of the at least first and second different three-dimensional shapes when fed via the common antenna feed point.
    Type: Grant
    Filed: May 19, 2009
    Date of Patent: June 19, 2012
    Assignee: Galtronics Corporation Ltd.
    Inventors: Randell Cozzolino, Gary Wannagot, Snir Azulay
  • Patent number: 8184063
    Abstract: A balanced dipole antenna, comprising: a left dipole arm having a center end, a right dipole arm having a center end, a coaxial cable having an outer conductor and a single inner conductor and a top end electrically located between the center ends of the left and right dipole arms, a left stub coupling the left dipole arm and the coaxial cable, and a right stub coupling the right dipole arm and the coaxial cable, wherein the inner conductor of the coaxial cable is connected to one of the left and right dipole arms, and the outer conductor of the coaxial cable is connected to the other of the left and right dipole arms.
    Type: Grant
    Filed: August 20, 2009
    Date of Patent: May 22, 2012
    Assignee: Research In Motion Limited
    Inventors: Yihong Qi, Perry Jarmuszewski, Paul Dullaert
  • 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: 8154466
    Abstract: A feed module is provided for an array antenna. The feed module comprises a multi-layer printed circuit board (PCB) feed structure for coupling signals between connections to transmitters or receivers and connection points for connecting to antenna elements of the array antenna. The multi-layer PCB feed structure comprises a body portion, incorporating coupling components, and a number of line sections for connecting to elements of the array antenna. The planar layers of the multi-layer PCB are arranged to be mounted substantially perpendicular to a planar array of antenna elements of the array antenna when the feed module is integrated therewith.
    Type: Grant
    Filed: December 17, 2008
    Date of Patent: April 10, 2012
    Assignee: BAE SYSYTEMS plc
    Inventors: Gareth Michael Lewis, Gary David Panaghiston, Larry Brian Tween, Richard John Harper
  • Publication number: 20120025848
    Abstract: A device for transmitting and/or receiving electromagnetic RF signals, in particular a UWB antenna, has a planar, ultra-wideband antenna structure made of a plurality of dipole elements. Each dipole element comprises two poles having substantially elliptical base shapes. A measuring machine, in particular a locating and/or material identifying device for identifying objects encased in a medium and/or for identifying material parameters, in particular the moisture of a material, has at least one UWB sensor comprising at least one device for transmitting electromagnetic RF signals. A machine tool monitoring device has a detecting device for detecting the presence of a material type, in particular of tissue, in a machine tool working area, and has a working mechanism wherein the detecting device comprises a sensor unit having at least one device for transmitting electromagnetic RF signals.
    Type: Application
    Filed: January 11, 2010
    Publication date: February 2, 2012
    Applicant: Robert Bosch GmbH
    Inventors: Juergen Hasch, Alexander Werner Hees
  • Publication number: 20110291907
    Abstract: An antenna element and balun are described. The antenna includes a plurality of droopy bowtie antenna elements disposed on dielectric block and a feed point. The balun includes a central member having dielectric slabs symmetrically disposed on external surfaces thereof. At least one end of the balun is provided having a shape such that conductors on the dielectric slabs of the balun can be coupled to the the droopy bowtie antenna elements.
    Type: Application
    Filed: June 1, 2010
    Publication date: December 1, 2011
    Applicant: Raytheon Company
    Inventors: Angelo M. Puzella, Sergey Makarov, Patrick Morrison
  • Patent number: 7994874
    Abstract: Disclosed is a tapered double balun for use with rotationally-symmetrical, frequency-independent antennas that are fed using spiral-mode number 2. The tapered double balun may be used to provide a four-terminal line, where all terminals carry the same voltage, but adjacent terminals are out of phase and opposite terminals are in phase. The antennas may be spirals, sinuous, or other four-arm antennas. The tapered double balun is a stripline device comprising two outer ground planes and a center conductor that is dielectrically separated from the ground planes. The outer ground planes each taper from a wide dimension at the connector end of the device to a narrow dimension at the antenna end of the device. The narrow opposing strips comprising the ground planes are configured to connect to two opposed arms of the antenna.
    Type: Grant
    Filed: June 5, 2009
    Date of Patent: August 9, 2011
    Assignee: Georgia Tech Research Corporation
    Inventor: Victor K. Tripp
  • Patent number: 7925220
    Abstract: Aspects of a method and system for matching an integrated FM system to an antenna utilizing on-chip measurement of reflected signals are provided. In this regard a portion of a signal output by an integrated FM radio transmit block and reflected by an antenna may be routed to an on-chip signal analyzer. Accordingly, measurements of the reflected signals may be utilized to configure a matching network in order to provide a best impedance match between the FM radio and the antenna. In this regard, a best impedance match may maximize radiation efficiency and/or radiated power. Additionally, the configuration of the matching network may incorporate a correction algorithm/offset experimentally determined via a calibration utilizing external components.
    Type: Grant
    Filed: August 1, 2007
    Date of Patent: April 12, 2011
    Assignee: Broadcom Corporation
    Inventor: Thomas Baker
  • Publication number: 20100225554
    Abstract: This document describes designs and techniques for directly feeding an unbalanced transmission line with a balanced antenna using Composite Right and Left Handed (CRLH) and balun structures.
    Type: Application
    Filed: March 3, 2010
    Publication date: September 9, 2010
    Applicant: Rayspan Corporation
    Inventors: Wei Huang, Vladimir Penev, Vaneet Pathak, Gregory Poilasne
  • Patent number: 7761115
    Abstract: An antenna structure includes first and second antennas. The first antenna has a first geometry corresponding to a first frequency. The second antenna has a second geometry corresponding to a second frequency. The second antenna is proximal to the first antenna and utilizes electrical-magnetic properties of the first antenna to transceive signals at the second frequency.
    Type: Grant
    Filed: May 30, 2006
    Date of Patent: July 20, 2010
    Assignee: Broadcom Corporation
    Inventors: Jesus Alfonso Castaneda, Franco De Flaviis, Ahmadreza (Reza) Rofougaran
  • Patent number: 7724201
    Abstract: The present invention provides a compact antenna system having multiple antennas exhibiting polarization and pattern diversity. The system comprises at least two antennas which may have different polarizations, operatively coupled to a passive element which operates as a Balun for a first antenna and which is configured to absorb and re-radiate electromagnetic radiation from the second antenna to produce a desired radiation pattern. The present invention also provides for additional antennas operatively coupled to the passive element or to the first antenna to provide additional diversity.
    Type: Grant
    Filed: February 15, 2008
    Date of Patent: May 25, 2010
    Assignee: Sierra Wireless, Inc.
    Inventors: Paul Nysen, Geoff Schulteis
  • Patent number: 7719381
    Abstract: A transmission line balun comprising a tubular ferrite having a longitudinal passageway concentrically positioned over a conductive sleeve having a longitudinal passageway. The end of a coax feeder is positioned in the longitudinal passageway of the sleeve and the sleeve is grounded at its proximal end to the shield of the coax cable. The sleeve buffers the effects of the parasitic line caused by using ferrite in a balun.
    Type: Grant
    Filed: May 16, 2006
    Date of Patent: May 18, 2010
    Assignee: Harris Corporation
    Inventor: Robert D. Talbot
  • Publication number: 20100117914
    Abstract: An antenna is provided for GNSS and other applications and includes an adjustable-height vertical support PCB mounted on a ground plane and mounting a crossed-dipole radiating arm element assembly. The gain pattern of the antenna can be varied by constructing the vertical support PCB with different heights or adjusting the height and gain pattern in the field. Vehicles with significant pitch and roll can be provided with low-horizon tracking capability by providing a high-profile antenna configuration. Alternatively, low-profile configurations provide steeper gain pattern rolloff at the horizon for maximal multipath rejection and high accuracy. The droop angles of the radiating arm elements are also adjustable for varying the gain pattern and beamwidth. A matching and phasing network is connected to the radiating arm elements and provides a relatively constant input impedance for the various antenna configurations.
    Type: Application
    Filed: November 10, 2008
    Publication date: May 13, 2010
    Inventors: Walter Feller, Xiaoping Wen
  • Publication number: 20100097287
    Abstract: A utility meter has an internal antenna for transmitting data. The antenna is positioned between the radome of the utility meter and its front surface. The antenna comprises dipole radiator that is generally curved to the shape of the meter housing. The dipole radiator comprises a dielectric substrate carrying two asymmetric curved radiating metallic sheets, each forming a portion of the dipole, which combined extend about 135° of the circumference of the utility meter. A balun feed is connected to the metallic sheets and a transmission line is coupled to a transmitter.
    Type: Application
    Filed: June 1, 2009
    Publication date: April 22, 2010
    Inventors: Daniel Pakosz, Clifford Raiman
  • Patent number: 7692600
    Abstract: A utility meter has an internal antenna for transmitting data. The antenna is positioned between the radome of the utility meter and its front surface. The antenna comprises dipole radiator that is generally curved to the shape of the meter housing. The dipole radiator comprises a dielectric substrate carrying two asymmetric curved radiating metallic sheets, each forming a portion of the dipole, which combined extend about 135° of the circumference of the utility meter. A balun feed is connected to the metallic sheets and a transmission line is coupled to a transmitter.
    Type: Grant
    Filed: June 1, 2009
    Date of Patent: April 6, 2010
    Assignee: Mobile Mark, Inc.
    Inventors: Daniel Pakosz, Clifford Raiman
  • Patent number: 7639198
    Abstract: An antenna comprising a reflective surface; and an array of dipole antenna elements disposed adjacent to the reflective surface. Each antenna element has a pair of arms which together define a dipole axis, and the dipole axis is tilted at an acute angle with respect to the reflective surface. The pair of arms may be dipole arms, or may be Yagi director arms. In some embodiments the dipole axis is tilted at an acute angle with respect to a feed axis. In some embodiments the antenna element comprises a feed portion defining a feed axis; and the feed portion has a mounting portion which is tilted at an acute angle with respect to the feed axis.
    Type: Grant
    Filed: December 29, 2005
    Date of Patent: December 29, 2009
    Assignee: Andrew LLC
    Inventors: Igor E. Timofeev, Eddie Ray Bradley, Ky Q. Chau, Martin L. Zimmerman
  • Publication number: 20090315800
    Abstract: A balanced dipole antenna, comprising: a left dipole arm having a center end, a right dipole arm having a center end, a coaxial cable having an outer conductor and a single inner conductor and a top end electrically located between the center ends of the left and right dipole arms, a left stub coupling the left dipole arm and the coaxial cable, and a right stub coupling the right dipole arm and the coaxial cable, wherein the inner conductor of the coaxial cable is connected to one of the left and right dipole arms, and the outer conductor of the coaxial cable is connected to the other of the left and right dipole arms.
    Type: Application
    Filed: August 20, 2009
    Publication date: December 24, 2009
    Applicant: RESEARCH IN MOTION LIMITED
    Inventors: Yihong QI, Perry JARMUSZEWSKI, Paul Dullaert
  • Patent number: 7629939
    Abstract: A dual polarized broadband base station antenna for wireless communication systems is disclosed. The present invention employs a dual polarized boxed arrangement radiation element with high isolation between polarization channels. Plural radiating elements project outwardly from the surface of a ground plane. The antenna elements are paired dipoles.
    Type: Grant
    Filed: March 29, 2007
    Date of Patent: December 8, 2009
    Assignee: Powerwave Technologies, Inc.
    Inventors: Gang Yi Deng, John J. Dickson, Tim Gossard
  • Publication number: 20090284432
    Abstract: A polymorphic antenna, including a metallic template configurable in at least first and second possible different three-dimensional shapes, the antenna, when configured in the at least first and second different three-dimensional shapes, having a common antenna feed point, a common balun coupled to the common antenna feed point; and a common dipole coupled to the common antenna feed point and to the common balun. The antenna operates in a common frequency band when configured in either of the at least first and second different three-dimensional shapes when fed via the common antenna feed point.
    Type: Application
    Filed: May 19, 2009
    Publication date: November 19, 2009
    Applicant: GALTRONICS CORPORATION LTD.
    Inventors: Randell Cozzolino, Gary Wannagot, Snir Azulay
  • Patent number: 7586457
    Abstract: A balanced dipole antenna has a coaxial cable connected between a load or source and the left and right dipole arms to substantially eliminate common mode current and radiative coupling between the coaxial cable and the left and right dipole arms. The connection between the source/load coaxial cable and the left and right dipole arms is a symmetric balun having a center branch that is an extension of the source/load coaxial cable, and left and right stubs. When the stubs are segments of coaxial cable, the outer conductors of the left and right stubs of the symmetric balun are respectively coupled to the left and right dipole arms, and one of the inner conductors of the left and right stubs is connected to the inner conductor of the center branch, while the other of the inner conductor of the left and right stubs is connected to the outer conductor of the center branch.
    Type: Grant
    Filed: March 20, 2007
    Date of Patent: September 8, 2009
    Assignee: Research In Motion Limited
    Inventors: Yihong Qi, Perry Jarmuszewski, Paul Dullaert
  • Patent number: RE42087
    Abstract: An antenna system with at least one tunable dipole element with a length adjustable conductive member disposed therein that enables the antenna to be used over a wide range of frequencies. The element is made of two longitudinally aligned, hollow support arms made of non-conductive material. Disposed longitudinally inside each element is a length adjustable conductive member electrically connected at one end. In the preferred embodiment, each conductive member is stored on a spool that is selectively rotated to precisely extend the conductive member into the support arm. The support arms, which may be fixed or adjustable in length, are affixed at one end to a rigid housing. During use, the conductive members are adjusted in length to tune the element to a desired frequency.
    Type: Grant
    Filed: January 4, 2006
    Date of Patent: February 1, 2011
    Assignee: Fluid Motion, Inc.
    Inventor: Michael E. Mertel