With Periodic Control Of Slot Or Coupling Patents (Class 343/768)
  • Patent number: 10283839
    Abstract: A dual band antenna based on open waveguide topology incorporating a radiation slot and integrating a planar resonator for dual band and miniaturization purposes and a cassette for holding a direct radiography sensor provided with at least one such antenna for wireless data transmission.
    Type: Grant
    Filed: July 2, 2015
    Date of Patent: May 7, 2019
    Assignee: AGFA NV
    Inventors: Guy Vandenbosch, Ping Jack Soh, Sen Yan, Jan Vercammen
  • Patent number: 10243268
    Abstract: An antenna device having a settable directional characteristic and a method for operating an antenna device. The antenna device according to the present invention includes a feed signal provision unit, with the aid of which a first, second, third and fourth electrical feed signal may be provided, the electrical feed signals being coherent with one another and having phases relative to one another which are adapted to set the settable directional characteristic of the antenna device, the phases being adaptable with the aid of a feed signal adaptation unit; a plurality of antenna columns, each antenna column including a respective plurality of electrically connected antenna elements; the electrical feed signals being conductable for inducing the antenna elements of the antenna columns to emit electromagnetic waves having the set directional characteristic.
    Type: Grant
    Filed: April 24, 2015
    Date of Patent: March 26, 2019
    Assignee: ROBERT BOSCH GMBH
    Inventor: Juergen Hasch
  • Patent number: 10170841
    Abstract: A dual mode antenna can be joined to an antenna feed. The antenna includes a slotted cylinder radiator that can be connected to the first conductor of the antenna feed and an electrically conductive ground plane that can be connected to the second conductor. The radiator axially extends perpendicularly from the ground plane and is electrically insulated therefrom. The first conductor can be joined to the radiator near one side of the slot. A reactive load is joined between the ground plane and the radiator near an opposite side of the slot. The reactive load impedes lower frequencies from the ground plane to the radiator. This allows the radiator to function as a monopole at lower frequencies and a slotted cylinder at higher frequencies.
    Type: Grant
    Filed: January 5, 2017
    Date of Patent: January 1, 2019
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: David A Tonn
  • Patent number: 10168197
    Abstract: A fill-level measuring device working according to the pulse radar principle for measuring a fill level of a fill substance in a container, comprising: a transmission system a pulse producing system, which, comprises, in each case, at least two measurements, for each measurement, produces a transmission signal composed of at least one microwave pulse periodically following one another, of center frequency predetermined for the particular measurement. The center frequencies of the transmission signals of at least two of the measurement are different from one another.
    Type: Grant
    Filed: August 28, 2013
    Date of Patent: January 1, 2019
    Assignee: ENDRESS+HAUSER SE+CO. KG
    Inventor: Thomas Blodt
  • Patent number: 10080610
    Abstract: A device for directing energy to a target volume of tissue includes an inner conductor having a length and an outer conductor coaxially surrounding the inner conductor along the length. The outer conductor has a proximal portion and a distal portion. The distal portion of the outer conductor is provided with a number of apertures N defined therein for radiating energy, where N is an integer greater than 1, each aperture having a size and extending at an angle relative to a longitudinal axis of the outer conductor. At least one of the size and the angle of each aperture is varied in relation to the other apertures N?1 such that the energy radiated along the distal portion is substantially uniform.
    Type: Grant
    Filed: March 3, 2015
    Date of Patent: September 25, 2018
    Assignee: Covidien LP
    Inventors: Francesca Rossetto, Joseph D. Brannan, Joseph A. Paulus, Christopher A. Deborski
  • Patent number: 9722317
    Abstract: An antenna is described including a slot formed in a cavity, a substrate configured to cover a portion of the cavity and the slot, and a first port and a second port configured to supply power to the antenna using a first feeding line and a second feeding line. Each of the feeding line and the second feeding line is connected to the slot in a vertical direction and disposed to be separate from one another. A first input impedance of the antenna from the first port differs from a second input impedance of the antenna from the second port.
    Type: Grant
    Filed: February 21, 2014
    Date of Patent: August 1, 2017
    Assignees: Samsung Electronics Co., Ltd., SNU R&DB Foundation
    Inventors: Jae Sup Lee, Seong Joong Kim, Seok Ju Yun, Sang Wook Nam, Su Min Yun
  • Patent number: 9431716
    Abstract: A leaky co-axial cable arrangement, including a co-axial cable, a plurality of radiation slots arranged on the co-axial cable and an activation arrangement configured for affecting predetermined regions on the cable to selectively activate or deactivate at least one of the plurality of radiation slots to provide the leaky co-axial cable arrangement.
    Type: Grant
    Filed: April 2, 2012
    Date of Patent: August 30, 2016
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (publ)
    Inventors: Henrik Asplund, Jan-Erik Berg, Jonas Medbo
  • Patent number: 9295968
    Abstract: A method for promoting chemical changes in a medium comprising the steps of placing a medium within an electromagnetically resonant structure that permits initiating a spark or a discharge in the medium by means of applying pulsed microwave energy in an electromagnetically resonant structure, the electromagnetically resonant structure being simultaneously mechanically resonant for acoustic or shock waves generated by the spark or discharge caused by the pulsed resonant microwave electromagnetic field; and providing a means to feed material into a reaction chamber within the electromagnetically resonant structure and collecting products of a reaction inside the reaction chamber.
    Type: Grant
    Filed: March 17, 2011
    Date of Patent: March 29, 2016
    Assignee: RF THUMMIM TECHNOLOGIES, INC.
    Inventors: Vassilli P. Proudkii, Joe Michael Yarborough, Kirk McNeil
  • Patent number: 9196940
    Abstract: A waveguide mechanical phase adjuster includes at least one pair of dielectric rods nominally spaced ¼ wavelength apart and inserted through a corresponding pair of holes in the wall of a waveguide. The holes are dimensioned so that they are in “cutoff” at the top end of the spectral band. An adjustment mechanism sets the insertion depth of the rods, which determines the amount of dielectric loading and, in turn, the insertion phase. Changing the insertion depth changes the dielectric loading, hence the insertion phase. The ¼ wavelength spacing of the rods serves to cancel reflected energy. Additional pairs of dielectric rods can be similarly configured and actuated to increase the range over which the insertion phase can be adjusted. The waveguide mechanical phase adjuster is well adapted for use with power combiners to maintain tight phase coherence between channels.
    Type: Grant
    Filed: March 7, 2014
    Date of Patent: November 24, 2015
    Assignee: Raytheon Company
    Inventors: Kenneth W. Brown, Darin M. Gritters, Andrew W. Chang
  • Patent number: 8957818
    Abstract: A circularly polarized waveguide slot array includes first and second waveguide sections, the first waveguide section extending along a longitudinal axis, and including an antenna element for transmitting or receiving a circularly polarized signal. The second waveguide slot section is coupled side-to-side with the first waveguide slot section and extends along the longitudinal axis, the second waveguide slot section including an antenna element for transmitting or receiving the circularly polarized signal at a phase which is substantially complementary to the circularly polarized signal transmitted by or received by the first waveguide slot section. Further exemplary, the antenna element disposed on the first waveguide slot section is offset from said antenna element disposed on the second waveguide slot section substantially one half of a predefined guide wavelength ?g along said longitudinal axis.
    Type: Grant
    Filed: June 4, 2012
    Date of Patent: February 17, 2015
    Assignee: Victory Microwave Corporation
    Inventor: Ming H. Chen
  • Publication number: 20140327589
    Abstract: An apparatus comprising: a conductive member configured to receive an antenna and to form a non-conductive region between the conductive member and a ground member; and a switch having a first closed configuration and a second open configuration, the first closed configuration being configured to couple the conductive member to the ground member across the non-conductive region and to provide a first current path having a first electrical length and a first resonant frequency, the second open configuration being configured to provide a second current path having a second electrical length and a second resonant frequency, the second resonant frequency being lower than the first resonant frequency.
    Type: Application
    Filed: April 6, 2011
    Publication date: November 6, 2014
    Applicant: Nokia Corporation
    Inventors: Mirsad Cviko, Alexandre Pinto
  • Patent number: 8736505
    Abstract: A dual-polarized antenna array is disclosed. The antenna array includes a plurality of self supporting, electrically conductive members. Tapered elements of neighboring electrically conductive members define tapered slots that form part of radiating structures. The radiating structures additionally include a slot line in communication with the tapered slot. A back cavity can be included as part of a BALUN structure that is integral to an electrically conductive member.
    Type: Grant
    Filed: February 21, 2012
    Date of Patent: May 27, 2014
    Assignee: Ball Aerospace & Technologies Corp.
    Inventors: Jeremy R. Lambert, Richard D. Chapman, Michel W. Schnetzer, Paul Freeman
  • Patent number: 8678292
    Abstract: A radio frequency identification (RFID) device includes a metallic antenna plate, a first metallic tube, and a second metallic tube. The metallic antenna plate has a positioning portion and defines a central axis, a first hole, and a second hole. The positioning portion is formed in the path of the central axis and surrounds the second hole. The first and second metallic tubes are disposed on the metallic antenna plate. The first and second metallic tubes each has one end disposed on the positioning portion. The first and second metallic tubes extend across the first and second holes, respectively and are welded to the metallic antenna plate. The portion of the second metallic tube that extends across the second hole is approximately perpendicular to the portion of the first metallic tube that extends across the first hole.
    Type: Grant
    Filed: May 19, 2012
    Date of Patent: March 25, 2014
    Assignee: Auden Techno Corp.
    Inventors: Jian-Min Tsai, Ching-Wei Chang
  • Patent number: 8669904
    Abstract: The present invention relates to a near-field antenna. In an aspect, the near-field antenna may include a dielectric layer, a ground plane formed on one side of the dielectric layer, a plurality of U-shaped slots periodically disposed in the ground plane for radiation, and a microstrip line provided on the other side of the dielectric layer for power feeding. In another aspect, the near-field antenna may include a dielectric layer, a ground plane formed on one side of the dielectric layer, a plurality of U-shaped slots periodically disposed in the ground plane for radiation, and a microstrip line configured to have a plurality of U-shaped slots diverged on the other side of the dielectric layer in parallel for power feeding, have the plurality of U-shaped slots periodically disposed in series in respective diverged lines, and have an end shorted to form standing waves.
    Type: Grant
    Filed: November 9, 2011
    Date of Patent: March 11, 2014
    Assignee: Electronics & Telecommunications Research Institute
    Inventors: Won Kyu Choi, Jae Young Jung, Jong Suk Chae
  • Patent number: 8599087
    Abstract: An antenna may be formed from conductive regions that define a gap that is bridged by shunt inductors. The inductors may have equal inductances and may be located equidistant from each other to form a scatter-type antenna structure. The inductors may also have unequal inductances and may be located along the length of the gap with unequal inductor-to-inductor spacings, thereby creating a decreasing shunt inductance at increasing distances from a feed for the antenna. This type of antenna structure functions as a horn-type antenna. One or more scatter-type antenna structures may be cascaded to form a multiband antenna. Antenna gaps may be formed in conductive device housings.
    Type: Grant
    Filed: October 10, 2011
    Date of Patent: December 3, 2013
    Assignee: Apple Inc.
    Inventors: Bing Chiang, Gregory Allen Springer, Douglas B. Kough, Enrique Ayala, Matthew Ian McDonald
  • Patent number: 8421697
    Abstract: This disclosure provides an antenna device, which includes a waveguide having a rectangular cross-section and formed with a plurality of slots in at least one side face thereof. The plurality of slots are arranged in a tube axis direction. At least one of the plurality of slots is formed with a predetermined inclination angle from a plane perpendicular to a tube axis direction of the waveguide.
    Type: Grant
    Filed: November 5, 2010
    Date of Patent: April 16, 2013
    Assignee: Furuno Electric Company Limited
    Inventor: Koji Yano
  • Patent number: 8380132
    Abstract: A self-structuring antenna system comprises a plurality of antenna elements, a plurality of switch elements arranged with the antenna elements to, when selectively closed, electrically couple ones of the antenna elements to one another, and a switch controller for opening and closing the switch elements. The switch controller is operatively associated with the plurality of switch elements via a plurality of addressable switch controllers.
    Type: Grant
    Filed: September 14, 2005
    Date of Patent: February 19, 2013
    Assignee: Delphi Technologies, Inc.
    Inventor: Louis L. Nagy
  • Patent number: 8378910
    Abstract: In one embodiment, a meander slot antenna includes a conducting sheet having a meander slot defined therein. The meander slot has a closed area defined by the conducting sheet. An electrical microstrip feed line crosses the meander slot. The electrical microstrip feed line and meander slot provide a magnetically coupled LC resonance element. A dielectric material has at least one conductive via therein. The at least one conductive via electrically connects the electrical microstrip feed line and the conducting sheet at a side of the meander slot. The dielectric material otherwise separates the conducting sheet from the electrical microstrip feed line. Other embodiments are also disclosed.
    Type: Grant
    Filed: September 25, 2009
    Date of Patent: February 19, 2013
    Assignee: Pinyon Technologies, Inc.
    Inventor: Forrest Wolf
  • Publication number: 20120026052
    Abstract: An antenna may be formed from conductive regions that define a gap that is bridged by shunt inductors. The inductors may have equal inductances and may be located equidistant from each other to form a scatter-type antenna structure. The inductors may also have unequal inductances and may be located along the length of the gap with unequal inductor-to-inductor spacings, thereby creating a decreasing shunt inductance at increasing distances from a feed for the antenna. This type of antenna structure functions as a horn-type antenna. One or more scatter-type antenna structures may be cascaded to form a multiband antenna. Antenna gaps may be formed in conductive device housings.
    Type: Application
    Filed: October 10, 2011
    Publication date: February 2, 2012
    Inventors: Bing Chiang, Gregory Allen Springer, Douglas B. Kough, Enrique Ayala, Matthew Ian McDonald
  • Patent number: 8044873
    Abstract: An antenna may be formed from conductive regions that define a gap that is bridged by shunt inductors. The inductors may have equal inductances and may be located equidistant from each other to form a scatter-type antenna structure. The inductors may also have unequal inductances and may be located along the length of the gap with unequal inductor-to-inductor spacings, thereby creating a decreasing shunt inductance at increasing distances from a feed for the antenna. This type of antenna structure functions as a horn-type antenna. One or more scatter-type antenna structures may be cascaded to form a multiband antenna. Antenna gaps may be formed in conductive device housings.
    Type: Grant
    Filed: April 13, 2010
    Date of Patent: October 25, 2011
    Assignee: Apple Inc.
    Inventors: Bing Chiang, Gregory Allen Springer, Douglas B. Kough, Enrique Ayala, Matthew Ian McDonald
  • Patent number: 7773043
    Abstract: A Variable Aspect Ratio Tapered Slot Antenna For Increased Directivity And Gain (NC#98102). The apparatus includes a tapered slot antenna having a length and a height, and having an aspect ratio greater than or equal to 2.5. The tapered slot antenna includes a first antenna element comprising conductive material and configured to receive and transmit RF signals; and a second antenna element comprising conductive material, operatively coupled to said first antenna element, configured to receive and transmit RF signals.
    Type: Grant
    Filed: February 8, 2007
    Date of Patent: August 10, 2010
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Rob Horner, Rod Cozad, Hale Simonds, Robbi Mangra
  • Patent number: 7755556
    Abstract: The invention relates to a wireless communication device that is coupled to an energy source, such as a battery, capacitor, or solar cell. The wireless communication device is coupled to an antenna of the energy source for wireless communication. The antenna receives communication signals from an interrogation reader or other communication device. The wireless communication device may be attached to a device or container for purposes such as communicating information regarding identification, manufacturing, tracking, and the like. The wireless communication device may also be coupled to the energy source for power.
    Type: Grant
    Filed: July 11, 2008
    Date of Patent: July 13, 2010
    Inventors: Ian J. Forster, Patrick F. King, Michael G. Ginn
  • Patent number: 7705795
    Abstract: An antenna may be formed from conductive regions that define a gap that is bridged by shunt inductors. The inductors may have equal inductances and may be located equidistant from each other to form a scatter-type antenna structure. The inductors may also have unequal inductances and may be located along the length of the gap with unequal inductor-to-inductor spacings, thereby creating a decreasing shunt inductance at increasing distances from a feed for the antenna. This type of antenna structure functions as a horn-type antenna. One or more scatter-type antenna structures may be cascaded to form a multiband antenna. Antenna gaps may be formed in conductive device housings.
    Type: Grant
    Filed: December 18, 2007
    Date of Patent: April 27, 2010
    Assignee: Apple Inc.
    Inventors: Bing Chiang, Gregory Allen Springer, Douglas B. Kough, Enrique Ayala, Matthew Ian McDonald
  • Patent number: 7696941
    Abstract: The embodiments contemplate a printed circuit board of at least two layers for providing remote wireless communication between a wireless device and a unit, as well as methods of creating an omni-directional radiation pattern for transmitting/receiving information using a notch antenna formed in the printed circuit board having radio frequency circuitry. The notch antenna, with a closed and opened end, may be etched or embedded into a ground plane conductor on a first layer of the board. A transmission line positioned on the bottom surface of a second layer of the board crosses under the portion of the board containing the notch antenna. A first and second intermediate layer electrically connected between the first layer and the second layer may serve as return ground planes for the transmission line. A capacitive circuit, positioned in series with the transmission line and across the notch antenna, functions to reduce and/or eliminate inductance of the transmission line.
    Type: Grant
    Filed: September 11, 2006
    Date of Patent: April 13, 2010
    Assignee: Elster Electricity, LLC
    Inventor: Charles Cunningham, Jr.
  • Publication number: 20100085262
    Abstract: In one embodiment, a meander slot antenna includes a conducting sheet having a meander slot defined therein. The meander slot has a closed area defined by the conducting sheet. An electrical microstrip feed line crosses the meander slot. The electrical microstrip feed line and meander slot provide a magnetically coupled LC resonance element. A dielectric material has at least one conductive via therein. The at least one conductive via electrically connects the electrical microstrip feed line and the conducting sheet at a side of the meander slot. The dielectric material otherwise separates the conducting sheet from the electrical microstrip feed line. Other embodiments are also disclosed.
    Type: Application
    Filed: September 25, 2009
    Publication date: April 8, 2010
    Applicant: PINYON TECHNOLOGIES, INC.
    Inventor: Forrest Wolf
  • Patent number: 7679575
    Abstract: A Tapered Slot Antenna Cylindrical Array (NC#98219). The method includes coupling at least two tapered slot antenna pairs to a base element in a cylindrical configuration. The method may further include coupling a transmitter/receiver to each tapered slot antenna of the at least two tapered slot antenna pairs via radio frequency links. In addition, the method may further include coupling a microprocessor to the transmitter/receiver via communication links.
    Type: Grant
    Filed: June 27, 2006
    Date of Patent: March 16, 2010
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Rob Horner, Rod Cozad, Bruce Calder, Hale Simonds, Robbi Mangra, Rolf Dahle, Dennis Bermeo
  • Patent number: 7633458
    Abstract: Provided is an antenna which has a small-sized planar constitution as can be easily mounted on a small-sized radio device and which can form a principal beam having a vertical polarization in directions of low and high elevation angles. On the surface of a substrate 11, slot elements 13A and 13B having a length of about one half wavelength are arranged in parallel at a predetermined distance d1, and a reflecting plate 14 is arranged at a predetermined distance h from the mounting face of the slot elements 13A and 13B. On the back of the substrate 11, parasitic elements 15A to 15D are made of a copper foil pattern and are arrayed to intersect the slot elements 13A and 13B at right angles. A switching element 16A is connected with the parasitic elements 15A and 15B, and a switching element 16B is connected with the parasitic elements 15C and 15D.
    Type: Grant
    Filed: July 21, 2005
    Date of Patent: December 15, 2009
    Assignee: Panasonic Corporation
    Inventors: Hiroyuki Uno, Yutaka Saito, Genichiro Ohta, Yoshio Koyanagi
  • Patent number: 7629936
    Abstract: There is provided a method for designing a corrugated Fermi antenna having a broad-band and circular directivity required for receiving an image by using a wave of millimeter order. As a first step, an inflection point of the Fermi-Dirac function as a taper function of the Fermi antenna is changed so as to set the beam width of plane H to a beam width having a target directivity. After the beam width of the plane H is set to the target value, the aperture width of the Fermi antenna is changed so as to set the beam width of the plane E to a beam width having a target directivity. Thus, by adjusting the beam width values of the planes H and E independently from each other and matching them with the target values, it is possible to design a Fermi-antenna having a broad-band and circular directivity in a short time.
    Type: Grant
    Filed: September 1, 2006
    Date of Patent: December 8, 2009
    Inventors: Koji Mizuno, Kunio Sawaya, Hiroyasu Sato, Yoshihiko Wagatsuma
  • Patent number: 7592962
    Abstract: A EPC Tapered Slot Antenna Method (NC#098518). The method comprising operatively coupling an input feed to a tapered slot antenna pair, wherein said tapered slot antenna pair comprises a first antenna element and a second antenna element; and electronically coupling a conductive launch structure to the first and second element at a location between a lowest operating frequency phase center and a launch end of the tapered slot antenna pair.
    Type: Grant
    Filed: July 9, 2007
    Date of Patent: September 22, 2009
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Rob Horner, Dennis Bermeo
  • Patent number: 7589688
    Abstract: The present invention relates to a compact planar antenna containing, on a substrate featuring at least one ground plane, a radiating slot forming at least one folded strand with parallel strand parts. The antenna contains at least one means of phase inversion between two successive strand parts, the means of phase inversion being positioned on the strand in such a manner that the field components of the parallel strand parts are added together. The use of phase inversion means makes it possible to reduce the dimensions of the antenna, facilitating its integration on a card.
    Type: Grant
    Filed: December 12, 2007
    Date of Patent: September 15, 2009
    Assignee: Thomson Licensing
    Inventors: Jean-François Pintos, Philippe Minard, Ali Louzir
  • Patent number: 7545335
    Abstract: The invention is a novel solution to circumvent the fundamental gain bandwidth limitations of an antenna of a given size by using a traveling-wave (TW) antenna and strongly coupling it with the mounting platform to enlarge the effective size of the antenna. A preferred form of this invention comprises a conducting ground surface generally curvilinear and conformal to said platform, a broadband TW surface radiator positioned above and spaced apart from said ground surface, an impedance matching structure between the surface radiator and the conducting ground surface, and a reactive impedance matching network positioned on the periphery of said surface radiator.
    Type: Grant
    Filed: March 12, 2008
    Date of Patent: June 9, 2009
    Assignee: Wang Electro-Opto Corporation
    Inventor: Johnson J. H. Wang
  • Patent number: 7538736
    Abstract: A variable slot antenna includes: ground conductors 101a and 101b, which are divided by a slot region 109 both of whose both ends are open ends 111a and 111b; a feed line 115 for feeding power to the slot region 109; a first selective conduction path 119 connecting between the ground conductors 101a and 101b in a direction of the open end 111a as viewed from a feeding site 113; and a second selective conduction path 121 connecting between the ground conductors 101a and 101b in a direction of the open end 111b as viewed from the feeding site 113. In a first driving state, the first selective conduction path 119 is allowed to conduct and the second selective conduction path 121 is left open, so that a main beam is emitted in a direction 123a of the second selective conduction path 121 as viewed from the feeding site 113. In another driving state, the selective conduction paths are controlled differently so that the main beam direction is switched to a direction 123b.
    Type: Grant
    Filed: July 24, 2008
    Date of Patent: May 26, 2009
    Assignee: Panasonic Corporation
    Inventors: Hiroshi Kanno, Tomoyasu Fujishima
  • Patent number: 7532172
    Abstract: With a differential feed line 103c, open-ended slot resonators 601, 603, 605, and 607 are allowed to operate in pair, a slot length of each slot resonator corresponding to a ¼ effective wavelength during operation. Slot resonators which are excited out-of-phase with an equal amplitude are allowed to appear within the circuitry. Thus, positioning condition of the open end points of the selective radiation portions 601b, 601c, 603b, 603c, 605b, and 607b in the respective slot resonators is dynamically switched.
    Type: Grant
    Filed: June 26, 2008
    Date of Patent: May 12, 2009
    Assignee: Panasonic Corporation
    Inventor: Hiroshi Kanno
  • Patent number: 7528785
    Abstract: A wireless communication device and method for identifying a container, or communication information about a container using a slot in the container as an antenna. The device includes a wireless communication device for transmitting information regarding the container. The container includes an outer wall forming rim and a slot between the rim edge and the outer wall that is circular and continues without boundaries. The wireless communication device is coupled to the slot to provide the slot antenna for communications. An impedance matching network is additionally provided to make the operating frequency of the slot substantially the same as the operating frequency of the wireless communication device. Alternatively, shorting posts may be placed in the slot to define boundaries of the slot to match the operating frequency of the slot to the operating frequency of the antenna. Multiple feed points may be provided between the wireless communication device and the slot.
    Type: Grant
    Filed: December 23, 2005
    Date of Patent: May 5, 2009
    Inventors: Ian J Forster, Peter Robert George Horrell
  • Patent number: 7525499
    Abstract: Opposite ends open slot resonators (601, 605) having a slot length during an operation set to become one half of effective wavelength are operated by a differential feeder liner (103c) and a slot resonator group excited with a reverse phase/equal amplitude is made to emerge in the circuit, and arrangement conditions of the open end points of selective radiation parts (601b, 601c, 603b, 603c, 605b, 605c, 607b, 607c) in each slot structure are switched dynamically.
    Type: Grant
    Filed: June 26, 2008
    Date of Patent: April 28, 2009
    Assignee: Panasonic Corporation
    Inventor: Hiroshi Kanno
  • Patent number: 7518565
    Abstract: A Tapered Slot Antenna Cylindrical Array (NC#97194). The apparatus includes a base and a tapered slot antenna array. The base is capable of retaining a plurality of tapered slot antenna pairs. The tapered slot antenna array is operatively coupled to the base in a cylindrical configuration. The tapered slot antenna array comprises at least two tapered slot antenna pairs. Each tapered slot antenna pair of the at least two tapered slot antenna pairs is capable of operating independently of or in conjunction with other tapered slot antenna pairs of the at least two tapered slot antenna pairs to enable direction finding, acquisition, communication and electronic attack capabilities.
    Type: Grant
    Filed: June 15, 2006
    Date of Patent: April 14, 2009
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Rob Horner, Rod Cozad, Bruce Calder, Hale Simonds, Robbi Mangra, Rolf Dahle, Dennis Bermeo
  • Patent number: 7453143
    Abstract: A high-speed electrical interconnection system is provided. The interconnection system comprises one or more electrical signal lines, or differential pairs of signal lines, and an in homogeneous dielectric system. The dielectric system further comprises a homogeneous dielectric layer interposed between the electrical signal lines, and an electrical conducting plane including a periodic array etched in the conducting material of the conducting plane. The inhomogeneous dielectric system exhibits a lower effective dielectric constant as compared to the dielectric constant of the homogeneous dielectric layer, resulting in lower microwave loss, reduced signal propagation delay, reduced signal skew and increased signal bandwidth. The interconnection system may be implemented for connecting one or more high speed electronic elements on-chip, off-chip, chip-chip connection on multilayer printed circuit boards, high speed die-package, high speed connectors and high speed electric cables.
    Type: Grant
    Filed: March 4, 2004
    Date of Patent: November 18, 2008
    Assignee: Banpil Photonics, Inc.
    Inventor: Achyut Dutta
  • Patent number: 7439924
    Abstract: An offset overlapping slot line comprises a first metallization on a first side of a dielectric substrate and a second metallization on a second side of a dielectric substrate cooperating to yield a transmission line. By overlapping the first and second metallizations, one may achieve much lower impedance than in traditional slot line transmission line structures. An offset overlapping slot line antenna apparatus incorporates an offset overlapping slot line in a feed region. This has the benefit of yielding a low input impedance. A low input impedance allows a transmit antenna to bed driven efficiently even by low voltage, high current drivers. Also a low input impedance can help reduce thermal noise in a received front-end. This technique is well suited for application to dipole, monopole, slot, and annular slot antennas, to name a few examples.
    Type: Grant
    Filed: June 19, 2006
    Date of Patent: October 21, 2008
    Assignee: Next-RF, Inc.
    Inventor: Hans Gregory Schantz
  • Publication number: 20080238795
    Abstract: Embodiments include systems and methods for controlling beam direction of an array of antenna elements in a wireless communications system. In one embodiment, aperture control shutters substantially cover each radiating antenna element. Each aperture control shutter is selectively turned on or off to control the direction of a beam of the antenna array.
    Type: Application
    Filed: March 31, 2007
    Publication date: October 2, 2008
    Inventors: Siavash Alamouti, Alexander A. Maltsev, Nikolay Chistyakov
  • Patent number: 7403170
    Abstract: With a differential feed line 103c, slot resonators 601, 603, 605, and 607 are allowed to operate in pair, a slot length of each resonator corresponding to a ½ effective wavelength during operation. Slot resonators which are excited out-of-phase with an equal amplitude are allowed to exist within the circuitry. Thus, positioning condition of selective radiation portions 601b, 601c, 603b, 603c, 605b, and 607b in the slot resonators is switched.
    Type: Grant
    Filed: September 27, 2007
    Date of Patent: July 22, 2008
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hiroshi Kanno, Ushio Sangawa
  • Patent number: 7397440
    Abstract: A Extended Phase Center Tapered Slot Antenna (NC#97529). The apparatus includes a first antenna element capable of transmitting and receiving radio frequency energy; a second antenna element capable of transmitting and receiving radio frequency energy, wherein the first antenna element and the second antenna element are situated in a tapered slot antenna pair configuration; and at least one conductive launch structure, electrically coupled to the first antenna element and the second antenna element at a location between a lowest operating frequency phase center and a launch end of the tapered slot antenna pair configuration, capable of conducting electricity.
    Type: Grant
    Filed: November 27, 2006
    Date of Patent: July 8, 2008
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Rob Horner, Dennis Bermeo
  • Patent number: 7388552
    Abstract: The present invention has been made to reduce the size and thickness of a multibeam antenna capable of switching the directivity in multi directions. The present invention provides a multibeam antenna including an antenna element array including one or more feed element and N (N: natural number) parasitic elements, wherein the electrical length of one or more parasitic elements are made variable.
    Type: Grant
    Filed: August 11, 2005
    Date of Patent: June 17, 2008
    Assignee: Sony Corporation
    Inventor: Kohei Mori
  • Patent number: 7358915
    Abstract: A phase shifter module (CD), dedicated to a reflectarray antenna, is defined by a characteristic resonant length and, in at least one chosen place, has an MEMS type device (DC, DC?) able to be placed in at least two different states respectively permitting and prohibiting the establishing of a short-circuit intended to vary said resonant length, in order to vary the phase shifting of a wave to be reflected presenting at least one linear polarization.
    Type: Grant
    Filed: March 23, 2005
    Date of Patent: April 15, 2008
    Assignee: Thales
    Inventors: Hervé Legay, Gérard Caille, Alexandre Laisne, David Cadoret, Raphael Gillard
  • Patent number: 7348928
    Abstract: Briefly, in accordance with one embodiment of the invention, a slot antenna may include a primary slot and one or more secondary slots. The size of the antenna may be reduced by adding one or more of the secondary slots which may add additional inductance to the antenna. Furthermore, the size of the antenna may be reduced by increasing the inductance of the secondary slots via increasing the length of the slots or by changing the shape of the slots. The antenna may include one or more MEMS varactors coupled to one or more of the secondary slots. The resonant frequency of the slot antenna may be tuned to a desired frequency by changing the capacitance value of one or more of the MEMS varactors to a desired capacitance value.
    Type: Grant
    Filed: December 14, 2004
    Date of Patent: March 25, 2008
    Assignee: Intel Corporation
    Inventors: Qing Ma, Xintian Eddie Lin, Al Bettner
  • Patent number: 7277060
    Abstract: In an antenna to be used for UWB communication, a taper slot is formed in a rectangular conductive plate, a vertical slit for separating the conductive pate is formed at the top of the taper slot, a feeding point part and a grounding point part are formed at the conductive plate and on both sides of the vertical slit, and the lower slits are formed on the oblique sides of the taper slot near the feeding point part and the grounding point part.
    Type: Grant
    Filed: July 12, 2006
    Date of Patent: October 2, 2007
    Assignee: Hitachi Cable, Ltd.
    Inventor: Keisuke Fukuchi
  • Patent number: 7262740
    Abstract: A small planar antenna with an enhanced bandwidth and a small rectenna for RFID (Radio Frequency Identification) and wireless sensor transponder are provided. The small planar antenna includes a dielectric substrate, a metal layer formed on an upper part of the dielectric substrate, a main slot formed in pattern on the metal layer, and a plurality of sub-slots connected to the main slot and winding in a specified direction, and the plurality of sub-slots form a pair of symmetric sub-slot groups around the main slot. According to the small planar antenna, the antenna region that substantially takes part in the radiation is substantially increased, and thus an enhanced bandwidth can be obtained without affecting the radiation pattern, radiation efficiency, polarization purity, etc., of the antenna.
    Type: Grant
    Filed: August 22, 2005
    Date of Patent: August 28, 2007
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yuri Tikhov, Young-hoon Min, Yong-jin Kim
  • Patent number: 7233297
    Abstract: A steerable antenna comprising an array of T-shaped slots. The location of the slots is moved to define an array of ring- or spiral-patterned phase constant regions. Distortions or contractions of the pattern occur by repositioning some or all of the slots forming the array. The antenna also comprises an intermediate insulating layer and a lower plate. The insulating layer is formed by a deformable dielectric medium. Deformation of the dielectric medium allows the beam angle to be altered.
    Type: Grant
    Filed: July 13, 2004
    Date of Patent: June 19, 2007
    Assignee: HRL Laboratories, LLC
    Inventors: Robin J. Harvey, Franklin A. Dolezal
  • Patent number: 7202831
    Abstract: A loop-slot antenna defined by a conductive plate includes a first slot and a second slot. The first slot and the second slot divide the conductive plate into a first strip, a second strip and a patch element. The first slot is an L-shaped slot and includes a transverse slot section extending along the lower edge of the conductive plate and a longitudinal slot section extending along the left edge of the conductive plate and opening to the upper edge of the conductive plate. The first slot is operated at a first frequency. The first strip includes a transverse branch and a longitudinal branch that has a feed point. The second slot opens upward. The second strip has a free end on which a grounding point is disposed. The patch element is formed between the first and the second slots and operable at a second frequency.
    Type: Grant
    Filed: August 9, 2005
    Date of Patent: April 10, 2007
    Assignee: Darts Technologies Corp.
    Inventors: Hong-Ren Chen, Kai Shih, Huang-Tse Peng, Yu-Yuan Wu
  • Patent number: 7187339
    Abstract: In order to have an antenna apparatus small in size and capable of switching its directivity pattern without degrading its antenna efficiency, the present invention provides an antenna apparatus having a driven element formed at an approximately center position of a planar printed circuit board and parasitic elements not performing feeding formed before and behind the first antenna element, respectively, so that the driven element is caused to function as a radiator and either one of the parasitic elements is made to have a length as long as an electrical length of a radiator or slightly shorter than that to function as a director and the other one of the parasitic elements is left to have an electrical length longer than that of the radiator to function as a reflector.
    Type: Grant
    Filed: January 12, 2005
    Date of Patent: March 6, 2007
    Assignee: Sony Corporation
    Inventor: Kohei Mori
  • Patent number: 7187337
    Abstract: A slot-line planar antenna has a substrate, an outer conductor disposed on one principal surface of the substrate and having an opening defined therein, an inner conductor disposed on the one principal surface of the substrate and positioned within the opening, the outer conductor and the inner conductor jointly defining a looped aperture line therebetween, and an electronic device electrically interconnecting the outer conductor and the inner conductor for controlling an electromagnetic wave field of a slot line provided by the aperture line.
    Type: Grant
    Filed: January 28, 2005
    Date of Patent: March 6, 2007
    Assignees: Nihon Dempa Kogyo Co., Ltd, Saga University
    Inventors: Masayoshi Aikawa, Eisuke Nishiyama, Fumio Asamura, Takeo Oita