| Patent Number |
Title Of Patent |
Date Issued |
| 7409024 |
Process for providing a pilot aided phase synchronization of carrier |
August 5, 2008 |
| A process for providing a phase synchronization of a pilot aided carrier of an input digital signal z(k), the signal z(k) having signal fields of L.sub.s symbol signals, namely a block of L.sub.P pilot symbol signals Z.sup.P.sub.(k) and a data field of (L.sub.s-L.sub.P) data symbol signa |
| 7397869 |
Process for providing a pilot aided phase recovery of a carrier |
July 8, 2008 |
| Providing a pilot aided phase recovery of a carrier of an input digital signal Z.sub.k having signal fields of L.sub.s symbol signals, L.sub.P pilot symbol signals Z.sup.P.sub.(k) and (L.sub.s-L.sub.P) data symbol signals Z.sup.d.sub.(k), by for each signal field: calculating an un |
| 7283019 |
Tuneable phase shifter and/or attenuator using photoresponsive-material in a waveguide |
October 16, 2007 |
| The invention relates to a tuneable phase shifter and/or attenuator comprising a waveguide having a channel and a piece of photo-responsive material (18) disposed within the waveguide along an internal wall of said channel, a light source disposed outside the waveguide to emit light |
| 7275203 |
Architecture for an iterative decoder |
September 25, 2007 |
| Iterative decoder comprising a plurality of servers which perform the iterative decoding of a data block each, an input buffer memory and a control unit which performs a statistical multiplexing of the data at input, which are firstly stored in the input buffer memory and successivel |
| 7239668 |
Coded digital modulation method for communication system |
July 3, 2007 |
| A new class of 16-ary Amplitude and Phase Shift Keying (APSK) coded modulations, called double-ring APSK modulation, based on an amplitude and phase shift keying constellation in which the locations of the digital signals to be encoded are placed on two concentric rings of equally sp |
| 7181163 |
Multi-beam satellite communications payload with flexible power allocation |
February 20, 2007 |
| A communications payload configuration comprising a multi-port amplifier that incorporates remotely controllable travelling wave tube amplifiers (TWTAs) for allowing their output power to be adjusted depending on the traffic demand and the payload operational conditions. The power de |
| 7123663 |
Coded digital modulation method for communication system |
October 17, 2006 |
| A new class of 16-ary Amplitude and Phase Shift Keying (APSK) coded modulations, called double-ring APSK modulation, based on an amplitude and phase shift keying constellation in which the locations of the digital signals to be encoded are placed on two concentric rings of equally sp |
| 7106863 |
Method for positioning by satellites |
September 12, 2006 |
| The invention relates to a security-protected system for positioning by satellites, comprising a constellation of satellites (11) sending out positioning signals under the control of a set of ground stations (14). A user receiver of the said positioning signals comprises means for se |
| 7019833 |
Miniature optical spectrometer |
March 28, 2006 |
| A high resolution spectrometer with a large free spectral range comprising an entrance slit for a beam of electromagnetic radiation to be analyzed, a first dispersion device for dispersing the beam to be analyzed into various wavelength components in a first direction, a second dispersio |
| 7010439 |
Digital circuit for measuring the power of a signal |
March 7, 2006 |
| The invention relates to a digital circuit making it possible to measure the effective voltage of a signal, comprising at least one module exhibiting a sampler stage exhibiting an output generating an output logic signal which, for each given sampling period, exhibits a level represe |
| 6996973 |
Method of achieving jet separation of an un-separated flow in a divergent nozzle body of a rocke |
February 14, 2006 |
| The invention relates to a rocket engine nozzle comprising a system for controlling jet separation of the flow in the nozzle, wherein said control system exhibits a plurality of separation triggering elements (5, 10) arranged in such a way as to generate, from mutually spaced initiat |
| 6986433 |
Container equipped with at least one deformable closure device |
January 17, 2006 |
| A container equipped with a closure device that allows an object to be placed in said container, particularly for the purposes of manipulating it, or allows it to be withdrawn from said container, the closure device having a plane and comprising a closure mechanism that can deform el |
| 6938406 |
Propulsion device, in particular for a rocket |
September 6, 2005 |
| The invention relates to a propulsion device comprising a gas ejection nozzle and an injection chamber for injecting at least one propellant fluid. According to the invention, the device has an induction loop which surrounds a zone of the nozzle and also an electricity generator to feed |
| 6914571 |
Device for measuring characteristics of an electromagnetic field, particularly for the radiation |
July 5, 2005 |
| The present invention relates to a device for measuring characteristics of an electromagnetic field emitted by a source being tested, comprising a radiating element (8), a support (6) for said radiating element and a mount (5) on which said support is fastened. It is characterized in tha |
| 6910339 |
Method and system for extracting and disposing of water vapor contained in the air of a space ve |
June 28, 2005 |
| A system for extracting including a cooled condenser apparatus in contact with the volume of pressurized air being dehumidified, the condensed water being transferred into collection areas by means of capillary attraction; an evaporation chamber in thermal contact with the condenser appa |
| 6732978 |
Combined propulsion system intended for a spacecraft |
May 11, 2004 |
| The invention relates to a combined propulsion system for a spacecraft, combining an electric propulsion system and a tether propulsion system, characterized in that the electric propulsion system is an electrostatic system (EP) which has, on the one hand, a generator (G) for ejecting an |
| 6633590 |
Method of synchronizing a reference clock of a ground station and a clock of a remote system |
October 14, 2003 |
| The invention relates to a method of synchronizing a reference clock of a first ground station and a local clock of a remote system, in particular a satellite. It includes: a) acquisition in a first loop of synchronization between reference bursts received by the remote system and gen |
| 6617831 |
Electrical power supply converter |
September 9, 2003 |
| The present invention relates to a converter comprising at least one converter module presenting at least one electricity feed terminal coupled to an electricity generator and to an electricity feed line such as a bus and including at least one series switch and at least one parallel swi |
| 6593877 |
Method for determining the position of a transmitting beacon |
July 15, 2003 |
| A method of determining the position of a transmitting beacon transmitting a signal to certain satellites in a constellation of satellites, which satellites in turn retransmit retransmitted signals to at least one detection ground station, wherein each of said ground stations is provided |
| 6538535 |
Dual-mode microwave filter |
March 25, 2003 |
| The invention provides a dual-mode microwave filter, comprising a rectangular resonator of length l, height b, and width a operating in two distinct modes (m, 0, n) and (p, 0, q) from a single family of modes and presenting the same direction as the E field, and wherein coupling and |
| 6536713 |
Method of controlling or stabilizing the attitude of a vehicle in space |
March 25, 2003 |
| A method of controlling the attitude of a vehicle in space relative to three reference axes, the method consisting: initially in adjusting the attitude of the vehicle in conventional manner to desired angles on the basis of a two-axis detector which points towards a reference heavenly |
| 6529158 |
Aperture synthesis radiometer and method of controlling same |
March 4, 2003 |
| An aperture synthesis radiometer operating in fully polarimetric mode. The measuring receivers are connected selectively to the polarization ports of the array elements following selected switching sequences thereby to provide the required cross-correlations that allow fully polarimetric |
| 6480154 |
Method and system for digital beam forming |
November 12, 2002 |
| In accordance with the invention, the digital samples associated with each of the array elements arranged along a plurality of parallel lines are shifted by a distinct predetermined number of positions along each of said lines, and the digital samples of each line are added separately. |
| 6473900 |
Device for broadcasting digital information via satellite from a plurality of earth stations |
October 29, 2002 |
| In the device: at least one set of links sends packet formated digital information to the satellite, on at least two different frequencies; at least one satellite-borne module receives, multiplexes and re-formates the information on only one downlink; at least one of the links works |
| 6469682 |
Periodic dielectric structure of the three-dimensional photonic band gap type and method for its |
October 22, 2002 |
| The present invention relates to a crystal structure with three-dimensional photonic band gap which comprises a pile of alternate series of layers of distinct dielectric materials having a first and a second determined dielectric constant values, wherein said layers have a constant deter |
| 6469672 |
Method and system for time domain antenna holography |
October 22, 2002 |
| A fast, novel method is disclosed which permits to determine the electrical features of an antenna. The antenna is excited with an ultra-short voltage pulse and the far field radiation pattern of the antenna is measured. The resulting time-varying field distribution across the antenna ap |
| 6449826 |
Method for assembling an optical array comprising coaxial shells |
September 17, 2002 |
| The invention provides a method of assembling an optical assembly having first and second longitudinal ends and comprising N coaxial shells forming individual mirrors, each of which extends between said first and second ends and presents a first diameter at said first end and a second di |
| 6437733 |
Method of processing multipath navigation signals in a receiver having a plurality of antennas |
August 20, 2002 |
| A method of processing navigation signals for a satellite navigation system using a receiver. The receiver is provided with a plurality of antennas generating antenna signals corresponding to the reception of signals corresponding to direct paths and to reflected paths. The method ad |
| 6411255 |
Reflector antenna comprising a plurality of panels |
June 25, 2002 |
| A reflector antenna comprising a plurality of plane panels assembled edge to edge to form a non-plane surface constituting an approximation to a reference surface, and a beam-forming device generating a beam-forming function for an array of antenna elements coupled to said panels. The |
| 6388605 |
Circuit for generating and/or detecting a radar signal |
May 14, 2002 |
| The invention relates to a circuit for generating and/or detecting a radar signal for synthetic aperture radar in which the radar signal is subdivided into N sub-bands which are processed in parallel in N processing channels, each having a first mixer for processing in-phase signals, |
| 6384395 |
Active pixel type detector |
May 7, 2002 |
| The invention relates to an active pixel type detector comprising M rows and N columns, each pixel having a top detector electrode and a bottom detector electrode, wherein the top detector electrodes are interconnected in rows or columns and the bottom electrodes are interconnected in co |
| 6292375 |
DC-DC voltage converter capable of protecting against short circuits |
September 18, 2001 |
| The invention relates to a DC voltage converter comprising first and second input terminals for receiving an input voltage, a choke component having a first terminal coupled to the first input terminal and a second terminal coupled to a first terminal of a capacitive branch which has a s |
| 6259234 |
Converter module for an electrical power supply and a system including it |
July 10, 2001 |
| The invention relates to a converter module for delivering an electrical power supply from at least one first source generating electrical current, the module including both a first self-inductive branch extending between a power supply terminal for the first source and a node point and |
| 6181115 |
Device for generating electrical energy for a power supply bus |
January 30, 2001 |
| A device for generating electrical energy for a power supply bus connected to a load. The device includes an electrical energy storage unit having at least one battery, a solar energy generator presenting a plurality of modules, a regulator for controlling discharging of the storage unit |
| 6157341 |
Method of processing signals of a satellite positioning system |
December 5, 2000 |
| The invention relates to a method of treating the L.sub.1 and L.sub.2 signals of a positioning system in which each of said L.sub.1 and L.sub.2 signals presents a single frequency carrier modulated by a known pseudo-random code P, itself modulated by an unknown code W, in which:a) each o |
| 6137437 |
Spaceborne scatterometer |
October 24, 2000 |
| A scatterometer orbiting around the earth globe comprises a single fanbeam radar antenna which is rotated around a vertical axis, at a slow rotation rate. The antenna foot-print sweeps a circular disc. The slow conical sweep combined with the motion of the satellite on which the scattero |
| 6134225 |
Device for broadcasting digital information via satellite |
October 17, 2000 |
| The device comprises at least one set of links that send packet formatted digital information to the satellite on at least two different frequencies, at least one second set of links on board the satellite receives the digital information packets, at least one packet time multiplexin |
| 6102336 |
Passive device for stabilizing the direction in which a spacecraft points |
August 15, 2000 |
| A passive device for stabilizing the pointing direction of a spacecraft of the type comprising a pair of panels that are symmetrical about a gyroscopic stabilization axis, each panel having an auxiliary flap that is at least partially reflecting. Each of the auxiliary flaps is spaced apa |
| 6096090 |
Method of designing an electrical filter and filter thus obtained |
August 1, 2000 |
| There is disclosed a method for designing an electrical filter comprising the steps of: a) selecting at least one determined function called seed function; b) determining the product of all these seed functions to define a transfer function generating function of the electrical filter; c |
| 6077548 |
Organic waste processing method, and uses thereof |
June 20, 2000 |
| The present invention relates to an open circuit organic waste treatment method, to a plant for carrying out the method, and to applications of that method. The treatment method is characterized in that it comprises the following steps: a) collecting the waste; b) introducing the waste |
| 6016328 |
Method and apparatus for the synchronization of a signal receiving station |
January 18, 2000 |
| In an FSK modulated signal receiving station a synchronization sub-system is arranged to sample the received signal and to select one sample per symbol within a detection window having a finite length, said samples being selected at predeterined instants. This produces a number of ve |
| 5965900 |
Tunnel-effect superconductive detector cell |
October 12, 1999 |
| The invention relates to a detector cell comprising tunnel-effect superconductive devices organized in a two-dimensional array and placed on a common substrate, each superconductive device comprising a tunnel-effect superconductive junction and being electrically connected to a bottom |
| 5898356 |
Thermally-activated switch for short-circuiting a battery cell |
April 27, 1999 |
| A thermally activated short-circuit switch for connection in parallel with a battery cell has first and second contact elements (6; 3) which are distinct from the electrodes of a diode, and thermally activatable means (45) for short-circuiting the first and second contact elements (6; 3) |
| 5886594 |
Circular waveguide dual-mode filter |
March 23, 1999 |
| The invention relates to a circular waveguide dual-mode filter comprising at least one element for adjusting a filter parameter. Said element is an elliptical waveguide portion disposed perpendicularly to the longitudinal axis of said circular waveguide. The filter may be coupled to an i |
| 5846817 |
Bioreactor, in particular for microgravity |
December 8, 1998 |
| A bioreactor, in particular for a microgravity, comprising at least one cell culture chamber, an oxygen supply and an agitator for a cell culture. In particular, the chamber includes two housing elements (1, 2) having a first (1', 9) and a second (2', 9') wall region, as well as a first |
| 5818868 |
Direct-sequence spread-spectrum receiver including code acquisition and detection using an autoa |
October 6, 1998 |
| The invention relates to the recognition of a spread spectrum data signal transmitted in code division multiple access communication systems. The invention provides a receiver whose code acquisition and detection circuit includes circuitry configured for detecting the signal received by |
| 5812088 |
Beam forming network for radiofrequency antennas |
September 22, 1998 |
| The invention concerns a beam forming network for radiofrequency antennas and applying to the input signals a two-dimensional hexagonal discrete Fourier transform in order to control radiating elements for generating multiple beams. The number of inputs and outputs is equal to N.sub.t wi |
| 5765098 |
Method and system for transmitting radio signals between a fixed terrestrial station and user mo |
June 9, 1998 |
| The invention concerns a method and a system for transmitting radio signals between a fixed terrestrial station and mobile user terminals via a network of satellites in inclined circular orbits having a radius less than that of geostationary orbits. The beams generated are divided into |
| 5736963 |
Feed device for a multisource and multibeam antenna |
April 7, 1998 |
| The invention relates to a feed device for a multisource semiactive antenna with multiple beams, including:a) a nonorthogonal beam shaper device (65) splitting Nb beam input signals and combining them to form Na output signals,b) Na amplifier modules (64),c) an orthogonal output power splitt |
| 5729444 |
High-efficiency DC-DC converter |
March 17, 1998 |
| A DC-DC converter includes a transformer with two oppositely-wound primary windings, one on each side of a center tap, and at least one secondary winding connected to a load having a given capacitance. A reference voltage source is connected to the center tap of the transformer via an |
