Patents by Inventor Ali Louzir

Ali Louzir has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Dual-band antenna front-end system
    Patent number: 8294628
    Abstract: The present invention relates to a multiple-port dual-band antenna system and the associated interface formed by DPDT or SPDT switches, that can be integrated on one and the same multi-layer structure.
    Type: Grant
    Filed: November 28, 2006
    Date of Patent: October 23, 2012
    Assignee: Thomson Licensing
    Inventors: Jean-Yves Le Naour, Ali Louzir, Philippe Minard, Jean-Luc Robert, Francoise Le Bolzer
  • Wideband antennas
    Patent number: 8284113
    Abstract: The invention relates to a dipole type wideband antenna comprising a substrate presenting two faces, a first conductive arm, a second conductive arm placed on the substrate, a feeder line supplying the second arm passing under the first arm, In this case, the feeder line extending by a line element placed under the second arm, this element being dimensioned to filter a given frequency.
    Type: Grant
    Filed: June 5, 2008
    Date of Patent: October 9, 2012
    Assignee: Thomson Licensing
    Inventors: Jean-François Pintos, Philippe Chambelin, Ali Louzir
  • Slot-line type microwave device with a photonic band gap structure
    Patent number: 8264304
    Abstract: A microwave device of the slot-line type with a photonic band gap structure, including at least: a first substrate in a dielectric material having a first permittivity ?r1, a second substrate in a dielectric material having a second permittivity ?r2, and between the two substrates, a conductive layer in which at least one slot-line is engraved, with, on the face of the first and second substrates opposite the face in contact with the conductive layer, facing the slot-line, periodic metal patterns. A compact filtering structure is realized.
    Type: Grant
    Filed: January 3, 2005
    Date of Patent: September 11, 2012
    Assignee: Thomson Licensing
    Inventors: Nicolas Boisbouvier, Ali Louzir, Françoise Le Bolzer, Anne-Claude Tarot, Kouroch Mahdjoubi
  • System of Multi-Beam Antennas
    Publication number: 20120146879
    Abstract: The present invention relates to a system of multi-beam antennas comprising a network of N radiating elements, N being an even whole number, the elements of the network being connected two by two via transmission lines. The system comprises in addition M radiating sources, M being a whole number greater than or equal to 1, the radiating source(s) each being positioned at a distance Li from the centre of the network such that the distance Li is strictly less than the distance of fields called far fields and i varies from 1 to M. This system can be used notably in MIMO devices.
    Type: Application
    Filed: December 6, 2011
    Publication date: June 14, 2012
    Inventors: Jean-François Pintos, Ali Louzir, Dominique Lo Hine Tong
  • Compact System of Multi-Beam Antennas
    Publication number: 20120146867
    Abstract: The present invention relates to a system of multi-beam antennas comprising M radiating sources and P networks of N radiating elements, P being greater than 1 and N being an even whole number, the network elements being connected two by two via transmission lines of the same electrical length. In addition, the P networks are co-located at the centre of each network, the M radiating sources are each positioned at a distance Li from said centre, the distance Li being strictly less than the distance of the field called the far field and i varying from 1 to M. This system can be used with MIMO type devices.
    Type: Application
    Filed: December 7, 2011
    Publication date: June 14, 2012
    Inventors: Jean-François Pintos, Philippe Minard, Ali Louzir, Dominique Lo Hine Tong
  • To planar antennas comprising at least one radiating element of the longitudinal radiation slot type
    Patent number: 8144068
    Abstract: The present invention relates to a planar antenna structure comprising at least one radiating element constituted by a longitudinal radiation slot etched onto a substrate. This structure comprises at least one modification element of the radiation pattern positioned in the radiation zone of the radiating element.
    Type: Grant
    Filed: January 8, 2009
    Date of Patent: March 27, 2012
    Assignee: Thomson Licensing
    Inventors: Julian Thevenard, Dominique Lo Hine Tong, Ali Louzir, Corinne Nicolas, Jean-Philippe Coupez, Christian Person
  • OMNIDIRECTIONAL VOLUMETRIC ANTENNA
    Publication number: 20120068903
    Abstract: The invention relates to a wide-band omnidirectional antenna including at least a first conducting member and a second conducting member having a revolution symmetry about a common revolution axis and central openings, said members being arranged opposite each other, at least one member having a progressively flaring area, characterised in that it comprises a gap between the conducting members and a central coaxial excitation line so as to achieve a three-dimensional contactless transition between the coaxial excitation line and the conducting members and members for modifying the radiation pattern in the flaring area of the diode type for selectively radiating the gap depending on the on- or off-state of said diodes.
    Type: Application
    Filed: June 4, 2008
    Publication date: March 22, 2012
    Inventors: Julian Thevenard, Dominique Lo Hine Tong, Ali Louzir, Corinne Nicolas, Jean-Philippe Coupez
  • Wide band dipole antenna
    Patent number: 8130163
    Abstract: The present invention relates to a compact wideband antenna of the dipole type comprising a first 1 and a second 2 conductive arm supplied differentially, one of the arms called first arm 1 forming at least one cover for an electronic card. Said type of antenna is connected to a portable electronic appliance such as a PC or similar device.
    Type: Grant
    Filed: April 13, 2006
    Date of Patent: March 6, 2012
    Assignee: Thomson Licensing
    Inventors: Philippe Minard, Jean-Francois Pintos, Ali Louzir, Philippe Gilberton, Jean-Luc Robert
  • FILTERING NETWORK IN HR-SI SILICON TECHNOLOGY
    Publication number: 20120028576
    Abstract: The invention relates to a filtering network in HR-Si silicon technology defined by at least one cut-off frequency and comprising an input terminal for receiving the signal to be filtered and an output terminal for delivering a filtered signal. The network comprises a first ground line connected by its ends to first and second ground points connected directly to the ground plane, a second ground line connected via its ends to third and fourth ground points directly connected to the ground plane, a plurality of L/C resonant elements connected in parallel and linked via one end to one of the two ground lines and via the other end between them, by means of coupling inductors which thus create transmission zeros.
    Type: Application
    Filed: February 12, 2010
    Publication date: February 2, 2012
    Applicant: Thomson Licensing
    Inventors: Dominique Lo Hine Tong, Raafat Lababidi, François Baron, Ali Louzir, Bernard Jarry, Bruno Barelaud, Julien Lintignat
  • Method for calibrating a terminal with a multi-sector antenna, and mesh network terminal
    Publication number: 20110312276
    Abstract: The invention relates to a method for calibrating a terminal with a multi-sector antenna in a mesh broadcasting network that comprises at least one other terminal. The method includes: the selection of one sector of the terminal antenna to be calibrated, the reception by the selected sector, of identification signals transmitted by each of the other terminals present in the network, as well as the information on the received signal level; and the storage, for each sector, of different identification signals of the terminals present in the network, and of the information on received signal level, into the memory of the terminal to be calibrated.
    Type: Application
    Filed: February 24, 2010
    Publication date: December 22, 2011
    Inventors: Jean-Luc Robert, Ali Louzir, Philippe Minard, Philippe Chambelin
  • Dual-response stopband filter
    Publication number: 20110291773
    Abstract: The invention relates to a dual-response stopband filter as well as to a filtering device comprising such a filter. The dual-response stopband filter comprises between the input terminal and the filter output a first direct channel and a second channel, known as a secondary channel, coupled with the first channel and forming a resonant element. The filter further comprises, integrated on the first direct channel, a selective low-pass filter to reject a first selected frequency band and, integrated on the second channel a variable capacitor to form the stopband filter of a second frequency band that can be determined. The switching device is associated with the first channel to switch the low-pass filter and the second channel to switch the stopband filter.
    Type: Application
    Filed: May 14, 2010
    Publication date: December 1, 2011
    Inventors: Dominique Lo Hine Tong, Jean-Yves Le Naour, Ali Louzir, Raafat Lababidi
  • Compact portable antenna for digital terrestrial television with frequency rejection
    Patent number: 7956816
    Abstract: The invention relates to a portable compact antenna formed from a first dipole type radiating element operating in a first frequency band and comprising a first and at least one second conductive arm, differentially supplied, the first arm, referred to as cold arm, forming at least one cover for an electronic card and the second arm, referred to as hot arm, being linked to the cold arm at the level of the supply. According to the invention, the hot arm comprises at least one slot resonating in a second frequency band such as the GSM band.
    Type: Grant
    Filed: May 4, 2007
    Date of Patent: June 7, 2011
    Assignee: Thomson Licensing
    Inventors: Philippe Minard, Jean-Francois Pintos, Ali Louzir
  • Method for making a waveguide microwave antenna
    Patent number: 7934308
    Abstract: The invention concerns a method for making a waveguide microwave antenna with corrugated horn, which consists in forming the corrugations of the horn on the outer surface of a synthetic material form block followed by surface metallization of the foam block configured to produce the antenna.
    Type: Grant
    Filed: October 1, 2003
    Date of Patent: May 3, 2011
    Assignee: Thomson Licensing
    Inventors: Ali Louzir, Dominique Lo Hine Tong, Florent Averty, Christian Person, Jean-Philippe Coupez
  • Compact portable antenna for terrestrial digital television
    Patent number: 7924236
    Abstract: The present invention relates to a portable compact antenna formed from a first dipole type element operating in a first frequency band and comprising a first and at least one second conductive arm, differentially supplied, the first arm or cold arm forming at least one cover for an electronic card and the second arm or hot arm being constituted by a U-shaped conductive element realized on an insulating substrate. Further, a radiating element with bends is realized between the branches of the U-shaped element and is dimensioned to operate in a second frequency band.
    Type: Grant
    Filed: May 4, 2007
    Date of Patent: April 12, 2011
    Assignee: Thomas Licensing
    Inventors: Jean-Francois Pintos, Philippe Minard, Ali Louzir
  • ACTIVE LOW PASS FILTER
    Publication number: 20110050363
    Abstract: The invention relates to a selective active low-pass filter and to a method for improving the selectivity of such a filter. The method consists in centring, in the centre of the network, the resonant element whose frequency is closest to the cut-off frequency of the filter and in inserting in series with this element a negative resistance of higher value than the parasitic resistance of the filter.
    Type: Application
    Filed: November 15, 2007
    Publication date: March 3, 2011
    Inventors: Dominique Lo Hine Tong, François Baron, Raafat Lababidi, Ali Louzir
  • Electromagnetic wave reception and decoding system provided with a compact antenna
    Patent number: 7889138
    Abstract: The invention relates to a data transmission system comprising an antenna provided with a monopole radiating element held in place by an earth plane provided with a conducting surface. According to the invention, the radiating element is located facing the surface of the earth plane so as to interact with the latter in order to improve its performance.
    Type: Grant
    Filed: March 15, 2005
    Date of Patent: February 15, 2011
    Assignee: Thomson Licensing
    Inventors: Jean-Francois Pintos, Jean-Luc Robert, Philippe Minard, Ali Louzir
  • Active photonic forbidden band antennae
    Patent number: 7864132
    Abstract: The present invention relates to an active photonic band gap antenna. In this case, the photonic band gap structure is constituted by metal rods, some of which are discontinuous, namely composed of sections of rods connected by a switching element such as a PIN diode. According to the invention, only one rod in a row of rods seen from the radiating source is discontinuous. The antenna pattern can be controlled at a low cost.
    Type: Grant
    Filed: November 24, 2005
    Date of Patent: January 4, 2011
    Assignee: Thomson Licensing
    Inventors: Nicolas Boisbouvier, Ali Louzir, Françoise Le Bolzer, Anne-Claude Tarot, Kouroch Mahdjoubi
  • MULTI-SECTOR RADIATING DEVICE WITH AN OMNI-DIRECTIONAL MODE
    Publication number: 20100245207
    Abstract: The present invention relates to a multi-sector radiating device intended to receive and/or transmit electromagnetic signals, comprising at least, arranged on a plane substrate: a first set of antennas, with: a first antenna, a second antenna, a third antenna, arranged in the opposite manner to the first antenna, a fourth antenna, arranged in the opposite manner to the second antenna, the antennas being longitudinal radiation slot type antennas, said antennas each presenting a bisector, wherein the radiating device comprises a switching circuit capable of activating one or more of the antennas, and notably all the antennas of the first set of antennas, —and in that the bisectors of the opposed antennas on the substrate are not combined.
    Type: Application
    Filed: November 19, 2008
    Publication date: September 30, 2010
    Inventors: Jean-Luc Robert, Philippe Minard, Ali Louzir
  • System for interconnecting two substrates each comprising at least one transmission line
    Patent number: 7804695
    Abstract: The present invention relates to an interconnection system of a first substrate (1) comprising at least one first transmission line (3) with a second substrate (10) comprising at least one second transmission line (11), the orientation of the first substrate with respect to the second substrate being arbitrary. The first substrate (1) comprises at least one metallized hole at one extremity of said first line and the second substrate (10) comprises a projecting element extending said second line and a ground saving, said projecting element being inserted into the metallized hole. The invention notably applies in the domain of microwaves and can interconnect a substrate comprising a printed antenna with a substrate receiving the processing circuits of the signal.
    Type: Grant
    Filed: February 9, 2009
    Date of Patent: September 28, 2010
    Assignee: Thomson Licensing
    Inventors: Julian Thevenard, Dominique Lo Hine Tong, Ali Louzir, Corinne Nicolas, Christian Person, Jean-Philippe Coupez
  • Compact multiband antenna
    Patent number: 7796090
    Abstract: The present invention relates to a compact multiband antenna constituted by a first dipole type element comprising a first conductive arm connected to a second conductive arm having the shape of a box, mounted on a ground plane, the first and the second arms being supplied differentially and a second element of the slot type realized on said ground plane in the extension of said second arm.
    Type: Grant
    Filed: August 31, 2006
    Date of Patent: September 14, 2010
    Assignee: Thomson Licensing
    Inventors: Philippe Minard, Jean-François Pintos, Ali Louzir, Philippe Gilberton