Abstract: A 5G communication system between at least one mobile terminal and a core network, the communication system includes at least one satellite, an access network comprising a plurality of base stations and a gateway disposed between the satellite and one of the base stations, the satellite and the gateway being able to exchange service frames comprising uplink service frames and downlink service frames, the uplink service frames having to be temporally aligned with the downlink service frames around a time reference point.

Abstract: A rat-race balun includes a transmission line loop and 4 input-output ports P1, P2, P3, P4 connected to the transmission line loop, the balun being designed to receive a first signal on the port P1, and to divide the first signal into a second signal that is delivered to the port P2 and a third signal that is delivered to the port P4, the second signal and the third signal being in phase opposition with one another, the balun wherein the balun is kidney-shaped and the ports P2, P4 each comprise at least a first section connected to the transmission line, the first section of the port P2 being parallel to the first section of the port P4.

Abstract: Method to establish a secure channel between the owner of a software payload and the software payload itself when running into a hardware-based trusted execution environment, HW TEE, at the instance of a cloud service provider, including sending, by the owner, a nonce to the software payload; generating, by the software payload, a payload key pair: public key and private key; mixing, by the software payload, the payload public key with the nonce; computing, by the HW TEE, an attestation using this nonce mixed with the payload public key; sending, by the software payload, the attestation, and the payload public key to the owner; verifying, by the owner, the attestation using the sent nonce mixed with the received payload public key; generating, by the software payload and the owner, a session key; and establishing a secure channel between the owner and the software payload running into the HW TEE.

Abstract: The invention relates to a coupling structure coupling a first optical mode to a second, the effective index of the second being strictly greater than that of the first. It comprises a first and a second waveguide configured to guide respectively the first and second optical modes. The core of the first waveguide extends into a proximal section and a distal section. The second waveguide includes a base and a ridge. A hybrid waveguide, interposed between the first and second waveguides, includes the proximal section and an extension of the base, arranged to cooperate to guide an intermediate optical mode. The effective index of the intermediate optical mode is strictly greater than the effective index of the second optical mode. A modal transition section including the distal section, extends from the hybrid waveguide to the second waveguide to couple the intermediate optical mode to the second optical mode.

Abstract: A device for protecting an electronic equipment item, configured to limit the electric current between an electric power generator and an electronic equipment item consuming electric power. The device includes a control circuit connected to a power circuit, the power circuit including power semiconductors, the power circuit being able to be connected in series between the electric power generator and the electronic equipment item. The control circuit includes event detection modules, a current setpoint variation module, and a control module for controlling the power semiconductors, configured to supply a control signal for limiting the electric current in the power circuit as a function of the current limitation setpoint signal.

Abstract: An aeronautical probe that presents a generally profiled shape, is provided with a fixing base and has undulations on at least part of its leading edge.

Abstract: A production method for producing an anode for a cold cathode X-ray source, including the following steps: producing an element referred to as target from a first material adapted to generating X-rays from the absorption of an electron beam, the first material having a first thermal expansion coefficient Ce,1(Tu) at a predetermined temperature Tu of use of the anode in the X-ray source, producing an element referred to as target support from a second material having a second thermal expansion coefficient Ce,2(Tu) at the predetermined temperature Tu, joining the target to the target support by hard soldering using a solder material at a soldering temperature higher than the predetermined temperature Tu and higher than a melting point of the solder material, so as to form a film of solder interposed between the target and the target support.

Abstract: An optoelectronic device includes at least one pixel comprising: a plurality of optical resonators, each optical resonator comprising a photodetecting structure confined between a first reflective metal layer and a second metal layer; and a connection microstructure that is arranged on a support made of dielectric material and is configured to electrically interconnect the second metal layers of the optical resonators belonging to the same pixel; and a readout integrated circuit arranged on a substrate and assembled with the pixel; the readout circuit comprising a buried readout electrode associated with the pixel and a metal or dielectric outer layer. The assembly comprising at least the first metal layer and the outer layer of the readout integrated circuit is called a planar assembly structure. The second metal layers of the resonators of a pixel are connected to the associated readout electrode by way of a metal via connected to the connection microstructure and passing through the support.

Abstract: A rat-race balun includes a transmission line loop and 4 input-output ports P1, P2, P3, P4 connected to the transmission line loop, the respective transmission line section between the adjacent ports P1 and P4 is of electrical length 2?2, of impedance Z3 and is a line section loaded by a capacitor of capacitance C2; where ?2<135 and the following equalities are satisfied: C ? 2 = - 2 ? tan ? ( ? 2 ) ? ? Z P ? 1 ? P ? 4 ? tan ? ( 2 ? ? 2 ) and ? Z 3 = - Z P ? 1 ? P ? 4 tan ? ( ? 2 ) w being equal to 2?f, with f the operating frequency, and ZP1P4 being the impedance of the unloaded transmission line section of physical length 3?/4 equivalent to the loaded line section.

Abstract: A method for the servo control of an optical device includes a cavity exhibiting resonance around a center frequency ƒc, a laser and a phase modulator, the method being designed to servo-control the cavity to the laser or vice versa and to compensate for an amplitude modulation introduced by the phase modulator, the method comprising, inter alia, the following steps: A. varying a difference ?? between the optical frequency of the laser radiation and the center frequency, such that the optical frequency scans the resonance, the difference being controlled by a parameter of an element of the device, and for each difference ??i i. modulating, at a modulation frequency ƒmod, a phase of the laser radiation, through a modulation phase ?mod, with the phase modulator, ii. injecting the phase-modulated radiation into the cavity, iii. using a photodiode to detect radiation reflected or transmitted by the cavity and generating an electrical signal (St, Sr) representative of the intensity of the detected radiation, iv.

Abstract: An aerodynamic measurement probe intended to measure a local angle of attack of an air stream flowing along the fuselage of an aircraft, includes a support and a shaft that is able to rotate about a longitudinal axis with respect to the support, the support and the shaft being configured to form between them a gap, passing around an annular tab at the end of the shaft in the support, making it possible to maintain a functional clearance to allow one end of the shaft to pivot freely in the support, and communicating with an impurity discharge circuit, the gap comprising an inner annular groove about the axis of rotation, made in the support, and opening out away from the axis directly onto the end part of the annular tab, the profile of the inner groove being rounded.

Abstract: Avionics system includes a bootstrap package including system partitions, and a primary configuration table, of a first type with hardware resource configuration values, a boot automaton launching the bootstrap package, at least one secondary configuration table of a second type with configuration values usable by a set of partitions, tertiary system configuration tables for the set of partitions, of a third type with configuration values used by a respective partition, application partitions, each including an avionics application and a tertiary configuration table, of the third type and containing configuration values of resources used by the respective application partition. The boot automaton checks whether an additional configuration file is present, and launches the additional configuration file including at least one configuration table of the first, second or third type, same being used instead of a table of the same type among the primary, secondary, tertiary system and tertiary application tables.

Abstract: A method for generating a secure secret key, includes the following steps: A. receiving, in a communication station referred to as the transmitting station, a first secret key by way of a quantum encryption channel via satellite, the first secret key also being transmitted to at least one other communication station by way of the quantum encryption channel; B. generating, in the transmitting station, a second secret key using a trusted random number generator; C. generating an encrypted secret key using the first secret key and the second secret key by the one-time pad method; D. transmitting the encrypted secret key from the transmitting station to the one or more other communication stations.

Abstract: Disclosed is a method for determining valley areas accessible by an aircraft, the method being implemented by an electronic device, the method including the following steps: obtaining an initial image of an environment including areas of valleys; processing the initial image so as to eliminate the imaged elements on the initial image, the dimension of the elements being less than a predetermined dimension, to obtain a first processed image; and determining the curvature of each imaged element in the first processed image, the valley areas accessible by the aircraft being the imaged elements, in the first processed image, the curvature of which is strictly less than zero.

Abstract: A management of the elements of the context of one or more flight plans is provided. The systems, methods and computer programs allowing real-time collaborative work on and around one or more flight plans between multiple remote systems are provided. A first system comprises receiving a modification, made on a second system, to a flight plan and to a set of associated objects or to another set of non-associated objects, displaying the modification and, if the modification is validated, returning the modification, as applied to the first system, to the second system to ensure uniformity around the collaborative navigation space between remote parties.

Abstract: A device for controlling radiofrequency beams comprising a set of cells. Each cell comprises a support frame and an excitation element, and emits and/or receives beams in an invariant manner according to the direction of propagation of the beam. The frame is inscribed within a generally tubular shape, oriented along the axis Z of a reference frame, having a cross section of perimeter P, and comprises an entrance, an exit and a number N of slots between the exit and a position Zo located between the entrance and the exit. Each slot has a variable width along Z. The slot width has a minimum value at the position Zo, and a maximum value at the exit that is determined on the basis of the perimeter P and the number N.

Abstract: A display device including elementary components for composing an image. Each component is made up of a compact assembly of light-emitting diodes, one group of diodes comprising a red diode and one or more other diodes which together have an emission spectrum comprising, during nominal operation, less red than that of the red diode, the group carrying out with the other elementary components a colour display for an operator to the naked eye. The assembly further comprises an additional diode which has, during nominal operation, with respect to the red diode, a wavelength that is less close to red, and with respect to the common spectrum a supplementary emission spectrum, for a colour display compatible with the use by an operator and in the vicinity of the display device of a night-vision tool sensitive to the near-infrared.

Abstract: A microwave-frequency power-transmission window assembly includes a microwave-frequency power-transmission window comprising: two tubes each having two parallel oblique planar cross sections, one oblique planar cross section being non-perpendicular to the central axis of the tube and being of constant thickness in the oblique planar cross section; and an optical plate assembled between the two respective ends of the two tubes positioned facing one another; a tubular extension element extending the microwave-frequency power-transmission window; two centring rings that centre the microwave-frequency power-transmission window in the tubular extension element; and an external housing equipped with two transparent portions positioned at the ends of the microwave-frequency power-transmission window tubular extension element.

Abstract: A detection system includes a phased array antenna having unitary radiating elements, the system being suitable for, in each cycle, successively directing, by way of the successive application of a first and a second determined phase law to the electrical signals for supplying power to the array antenna, the antenna radiation towards a first target area (Z1), then a second target area (Z2), which is separate from the first target area (Z1), and determining an image of each target area (Z1) on the basis of the echoes received from each of the first and second target areas.

Abstract: A reception chain allowing the reception of IFF and ADS-B signals while rejecting at least one intermediate frequency band, includes a reception antenna, an analog part with: a two-band filtering device passing around the frequency bands of the IFF and ADS-B signals while rejecting the intermediate frequency band, a low-noise amplifier, a mixer configured to transpose the IFF and ADS-B signals to lower frequencies, an analog-digital converter, a digital part configured to duplicate the digitized signal, and to process the duplicated signals respectively on a first, IFF, path and a second, ADS-B, path each comprising a filtering device, a frequency transposition device, and signal processing means.