Abstract: The invention relates to an omni-directional ultra-wide band antenna including at least two metallic members (14, 15, 16) provided opposite an earth plane (11) and distributed about a symmetry axis (AA) perpendicular to the earth plane (11) and at the centre of the antenna, characterised in that the metallic members (14-16) each have a narrow quasi punctual geometry at their base that flares along the symmetry axis (BB) of said metallic members (14-16) in the direction of the upper end thereof, and in that said metallic members (14-16) are oriented in a direction extending from a common point (18) of said metallic members and opposite the earth plane (11).

Abstract: The present invention relates to an ultra-wideband signal receiver comprising: at least a first set of sampling cells for sampling the waveform of a received signal; at least a second set of sampling cells for sampling the waveform of the received signal, with a predefined delay ?; and at least one correlator for delivering information depending on the correlation between the waveforms thus sampled.

Abstract: The invention relates to a method of decoding a matrix built from concatenated codes, corresponding to at least two elementary codes, with uniform interleaving, the matrix having n1 lines, n2 columns and n1*n2 symbols, the method comprising processing all the lines- and columns-vectors of the matrix by symbol groups, the processing comprising a first decoding to simultaneously process all the symbols of a group of symbols according to their lines and then a second decoding to simultaneously process all the symbols of said group of symbols according to their columns, the symbol groups being thus successively processed in lines and in columns, or conversely.

Abstract: An autonomic network node system for providing at least one virtual router (VR) for providing on demand virtual routing service, the autonomic network node system includes a plurality of autonomic router components (ARCs) comprising at least one autonomic control component (ACC) and at least one autonomic forwarding component (AFC), physical resources comprising a plurality of logical resource partitions (LRPs), at least one database for storing information relating to the plurality of ARCs and LRPs, and a autonomic framework configured for receiving at least one request of on demand virtual routing service, accessing at the at least one database, allocating at least one LRP to perform at least one ARC to be installed in the autonomic network node system, installing the at least one ARC in the autonomic network node system, allocating the installed ARC and, updating the at least one database.

Abstract: The present invention relates to signal processing in an analog-to-digital converter comprising a time-interleaved multi-channel architecture. According to the invention: digital filtering (H(z)) is applied in each channel, at least to estimate a converter offset error, and a compensation for the offset is applied on the basis of the estimated offset error. Advantageously, it is possible to benefit from the presence of a digital filter (H(z)) that is usually used to filter the quantization noise, such as a comb filter in converters that have sigma/delta modulators, in order to estimate the offset. The same filtering can then be applied in order to also estimate a gain disparity between the different channels.

Abstract: This system comprises: clusters of first nodes (CS1, CS2) for which orientation and localization can be required and at least a node (FN1, FN2, . . . ) called measuring node to determine the relative orientation and localization of said first nodes sharing with it direct lines of sight; Each node having radio station (11, 12, 13 . . . ) operating on the base of MIMO process involving various polarizations of the received and transmitted waves at their trans-mission and reception sides.

Abstract: The invention relates to an electronic switching device for high-frequency signals. The invention is of particular use in the connection between a microwave frequency antenna and an electronic circuit. This circuit comprises one or two access points designed to be connected to the antenna forming a third access point. In the case of a switch between one access point and the antenna (called an SPST switch), it comprises two switching diodes, one, called a serial diode, being connected in series between the access points and the other, called a shunt diode, between one of the access points and an earth of the device.

Abstract: The circuit (7) for demodulating three mutually phase-shifted components of a baseband signal, in order to provide two quadrature demodulation components (I, Q), comprises—three circuit inputs (4, 5, 6), designed to receive respectively the three components, —first and second adder circuits (77, 78) and—a bank (70) of weighting circuits (71, 72, 73, 74, 75, 76) linked, at input, to the three circuit inputs (4, 5, 6) and linked, at output, to inputs of the first and second adder circuits (77, 78) so as to transmit to each adder input, with a determined weighting, a particular one of said three components, the weightings being chosen so that the first and second adder circuits (77, 78) provide the said two quadrature demodulation components (I, Q).

Abstract: The invention relates to an array of waveguides (1) comprising a set of coupled waveguides that are substantially parallel and oriented in a guidance direction (Y), the set of waveguides comprising a first zone (2) formed by waveguides coupled according to a first coupling coefficient, and a second zone (3) formed by waveguides coupled according to a second coupling coefficient that is different from the first coupling coefficient, characterized in that the second coupling coefficient is different from the first coupling coefficient in the guidance direction and in the direction (X) perpendicular to the guidance direction.

Abstract: A device for measuring the pulse includes a pulse sensor of photoplethysmographic type preferably worn in the ear, comprising at least one light source, especially an infrared light source, and a component sensitive to the light emitted by the source, especially a single component, and a denoising system including an electronic preconditioning circuit designed to eliminate the slow artifacts of a signal representative of the pulse acquired by the light sensitive component and, at least one microcontroller designed to process the signal delivered by the electronic preconditioning circuit and eliminate the fast artifacts.

Abstract: The invention relates to a transmission/reception antenna having one or more given operating frequencies, comprising: at least one metallic member (2) provided or to be provided opposite a mass plane (3) for providing a capacitive function; and an inductive member (5); characterised in that the metallic member (2) and the inductive member (5) have general dimensions lower than ?/10, where ? is the operational wavelength, the metallic member (2) and the inductive member (5) defining together a resonator circuit at a frequency corresponding to the operational wavelength, and the metallic member (2) comprising discontinuities which represent the origin of radiation loss during operation.

Abstract: The invention relates to an omni-directional ultra-wide band antenna including at least two metallic members (14, 15, 16) provided opposite an earth plane (11) and distributed about a symmetry axis (AA) perpendicular to the earth plane (11) and at the centre of the antenna, characterised in that the metallic members (14-16) each have a narrow quasi punctual geometry at their base that flares along the symmetry axis (BB) of said metallic members (14-16) in the direction of the upper end thereof, and in that said metallic members (14-16) are oriented in a direction extending from a common point (18) of said metallic members and opposite the earth plane (11).

Abstract: The invention relates to an electronic switching device for high-frequency signals. The invention is of particular use in the connection between a microwave frequency antenna and an electronic circuit. This circuit comprises one or two access points designed to be connected to the antenna forming a third access point. In the case of a switch between one access point and the antenna (called an SPST switch), it comprises two switching diodes, one, called a serial diode, being connected in series between the access points and the other, called a shunt diode, between one of the access points and an earth of the device.

Abstract: An autonomic network node system for providing at least one virtual router (VR) for providing on demand virtual routing service, the autonomic network node system includes a plurality of autonomic router components (ARCs) comprising at least one autonomic control component (ACC) and at least one autonomic forwarding component (AFC), physical resources comprising a plurality of logical resource partitions (LRPs), at least one database for storing information relating to the plurality of ARCs and LRPs, and a autonomic framework configured for receiving at least one request of on demand virtual routing service, accessing at the at least one database, allocating at least one LRP to perform at least one ARC to be installed in the autonomic network node system, installing the at least one ARC in the autonomic network node system, allocating the installed ARC and, updating the at least one database.

Abstract: An ultra-wideband antenna includes a zone, an excitation means, and an adapting means. The zone is defined between first and second shaped surfaces such as to form a radiating element. The first and second shaped surfaces are also rotationally symmetrical in relation to a longitudinal axis of the antenna, and are disposed opposite one another in respect of a plane that is orthogonal to the longitudinal axis and that contains a horizontal axis. The first and second shaped surfaces are configured to control the characteristics of an electromagnetic field in the zone such that the antenna has an essentially-constant gain in the frequency band along an azimuth plane. The excitation means is configured to supply a signal in a localised manner in a central region of the zone. The adapting means is configured to promote a localised coupling between the excitation means and the zone.

Abstract: The present invention relates to an ultra-wideband signal receiver comprising: at least a first set of sampling cells for sampling the waveform of a received signal; at least a second set of sampling cells for sampling the waveform of the received signal, with a predefined delay ?; and at least one correlator for delivering information depending on the correlation between the waveforms thus sampled.

Abstract: The invention relates to an optical imagery device comprising: a light source, an optical medium in which the light coming from the source can be propagated; a detection surface defined by a frontier of the optical medium; an image sensor towards which the light coming from the light source and undergoing reflection onto the detection surface is reflected. The inventive device is characterized in that it is arranged in such a way that from the sensor the source appears to be sufficiently pointed to enable an image to be formed directly on the sensor.

Abstract: A method of managing a communication network comprising a control plane and a network plane, the network comprising nodes and physical connections of the nodes, each of a plurality of nodes being a logical network device, supporting a control plane portion in the control plane and a network plane portion in the network plane, in which method, the control plane portions of the logical network devices form a logical network in a peer to peer fashion, and control data necessary for administering the communication network and/or for managing users of the communication network is contained in at least one database distributed between at least a plurality of control plane portions of the network devices forming the logical network.

Abstract: An equalizer device is used for digital communications systems having a plurality of receive channels. The equalizer device in normal operation comprises a transversal filter for each receive channel, an adder for summing the receive channels, and a system downstream from the adder including a phase corrector and a recursive portion including a single recursive filter and decision circuit in its forward branch. The equalizer device including decision-taking circuit for evaluating its performance as a function of the output signal from the equalizer device and for responding to the result of this evaluation by switching from a first structure which corresponds to a normal mode of operation to a second structure which corresponds to a convergence mode of operation, and vice versa.

Abstract: The invention concerns a module for decoding a concatenated code, corresponding at least to two elementary codes C1 and C2, using storage means (81, 83, 90, 111, 113) wherein are stored samples of data to be decoded, comprising at least two elementary decoders (821, 822, . . . 82m) of at least one of the elementary codes, the elementary decoders associated with one of the elementary codes simultaneously processing, in parallel separate code words contained in the storage means.