Patent application number | Description | Published |
20080205509 | Terminal and method for the simultaneous transmission of video and high-speed data - For a simultaneous dual-band reception or transmission of video signals and data in a domestic environment, a terminal in a communication system is made up of a front end module connected to digital processing circuits via a circuit designed for MIMO techniques. At least two antennas linked to the terminal are broadband and dual-access, each of the accesses corresponding to a path for receiving or transmitting signals in a first or a second frequency band. | 08-28-2008 |
20080290967 | Offset footprint of a connector on a printed board - The present invention relates to a board receiving at least one connector, said board being constituted by a dielectric substrate comprising, on a first face, a first ground plane and on a second face, at least two transmission lines between which the connector and a footprint are mounted, characterized in that the footprint comprises a first element positioned between the two transmission lines under the connector, said first element forming with the first ground plane, a capacitive element and, at each extremity of the first element, second elements forming with the first element, a self-inductive and capacitive element, said second elements each extending by a second ground plane, the second ground planes being connected to the first ground plane. | 11-27-2008 |
20090213562 | System for interconnecting two substrates each comprising at least one transmission line - The present invention relates to an interconnection system of a first substrate ( | 08-27-2009 |
20090262036 | To planar antennas comprising at least one radiating element of the longitudinal radiation slot type - 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. | 10-22-2009 |
20100019865 | Module With Frequency-Tunable Function - The invention relates to an electronic package comprising a substrate, a frequency tunable function at the surface of the said substrate, a dielectric material having variable permittivity with an electrical excitation in contact with the said function and a support secured to the substrate so as to define the package, characterized in that the substrate comprises a membrane, the said membrane lying between an upper cavity and a lower cavity of the package, at least one cavity being filled with the dielectric material that can be a liquid crystal. The presence of two cavities, at least one of which is filled with variable-permittivity dielectric material, makes it possible to increase the operating frequency range of the function. | 01-28-2010 |
20100066622 | MULTI-SECTOR ANTENNA - The present invention relates to a multi-sector antenna comprising N (N>1) planar antennas each constituted of a longitudinal radiation slot etched on a first substrate provided with a ground plane and supplied by an excitation line. The N first substrates are fixed on a second common substrate so that the radiation axis of each antenna is parallel to said second substrate, the N first substrates being interconnected around an axis perpendicular to the second substrate. The invention can be applied to high definition wireless cameras. | 03-18-2010 |
20100134700 | CHANNEL FILTER, IN PARTICULAR FOR A DIGITAL TELEVISION RECEIVER - The channel filter includes at a least one basic bandpass filter centred on the frequency of the channel, in series with two cascade-connected reflective filters whose bandwidths are located either side of the basic bandpass filter encompassing the channels adjacent to the channel. A reflective filter can include a 90° directional coupler combined with a bandpass filter designed to ensure transfer matched to the load impedance of the coupler with the input of the bandpass filter connected to a directional coupler output port, the input of the directive filter being formed by input port of the coupler and the output of the directive filter being formed by a port recovering the bandpass filter reflection coefficient. The invention applies in particular to the implementation of the DVB-T and DVB-H standards aimed at receiving digital television programmes from fixed or mobile multistandard terminals such as mobile telephones, PDAs or other multimedia receivers. | 06-03-2010 |
20110050363 | ACTIVE LOW PASS FILTER - 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. | 03-03-2011 |
20110090125 | FRONT END BLOCK WITH INTERGRATED ANTENNA - The invention relates to an RF reception front end block comprising a first substrate and an RF integrated front end module integrated onto a second substrate supporting a radiating part of the antenna. | 04-21-2011 |
20110158136 | DUAL-MODE MIXER - The present invention relates to a mixer for signals at different frequencies comprising a network of diodes formed by a pair of diodes mounted in an anti-parallel manner, the first linking point of the diodes being connected to the ground, the second linking point being connected to the ports of transmission/reception signal paths and to the port of a local oscillator path at different frequencies. An impedance matching network for dual-mode use is connected in series in the diode network between the first linking point connected to the ground and the anode of one of the diodes of the diode network. A filtering network is connected between the second linking point and each of the ports of the transmission/reception paths and of the local oscillator path. | 06-30-2011 |
20110291773 | Dual-response stopband filter - 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. | 12-01-2011 |
20120028576 | FILTERING NETWORK IN HR-SI SILICON TECHNOLOGY - 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. Each ground line forming inductive elements via inductances the network comprises capacitive elements in series with at least some of said inductive elements, the value of the capacitive elements being selected so that the resonant frequency of the inductive and capacitive elements in series corresponds to a frequency lying outside of the bandwidth. | 02-02-2012 |
20120068903 | OMNIDIRECTIONAL VOLUMETRIC ANTENNA - 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. | 03-22-2012 |
20120146867 | Compact System of Multi-Beam Antennas - 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. | 06-14-2012 |
20120146879 | System of Multi-Beam Antennas - 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. | 06-14-2012 |
20120284766 | BAND-STOP FILTER - The present invention relates to a band rejection filter. The band rejection filter includes a first signal transmission channel called a direct channel and a second signal transmission channel called a secondary channel. The direct channel and the secondary channel being designed to introduce at a first rejection frequency a phase difference of 180° between the signal circulating via the direct channel and the signal circulating via the secondary channel. Additionally, the secondary channel includes a filtering element for which the cut-off frequency is different from the first rejection frequency in a way to create a second rejection frequency. | 11-08-2012 |
20120287005 | MULTIBEAM ANTENNA SYSTEM - The present invention relates to a multibeam antenna system comprising:
| 11-15-2012 |
20130002373 | HIGH REJECTION BAND-STOP FILTER AND DIPLEXER USING SUCH FILTERS - The present invention relates to a high rejection stop band filter and a diplexer using such filters. | 01-03-2013 |
20130083833 | System forTransmission of Signals in a Domestic Environment - The present invention relates to a wireless transmission system for signals intended more specifically for a domestic environment. It includes a central terminal comprising at least m transmission channels and n directive transmission antennas intended to transmit first signals at least one client terminal having at least one reception channel connected to a reception antenna in order to receive the first signals said central terminal and said client terminal communicating in a transmission channel having a predetermined frequency band, and an estimation device able to generate an item of information representative of the reception quality of first signals in at least one point of a predetermined geographic zone associated with the client terminal and a return channel in order to transmit said at least one item of information to the control means of the central terminal. | 04-04-2013 |
20130102261 | METHOD FOR CALIBRATING A BAND REJECTION FILTER OF A TERMINAL AND MULTISTANDARD TERMINAL WITH CALIBRATED BAND REJECTION FILTER - The present invention relates to a multimedia mobile terminal capable of transmitting and receiving signals compliant with several standards in the UHF band. It comprises:
| 04-25-2013 |
20130249770 | DEVICE FOR RECEIVING OR EMITTING/RECEIVING MIMO SIGNALS - The invention relates to a device for receiving signals in a MIMO system comprising:
| 09-26-2013 |
20130285865 | PRINTED SLOT-TYPE DIRECTIONAL ANTENNA, AND SYSTEM COMPRISING AN ARRAY OF A PLURALITY OF PRINTED SLOT-TYPE DIRECTIONAL ANTENNAS - The present invention relates to a printed slot-type directional antenna. The invention also relates to antenna systems formed by arranging a plurality of such antennas in an array. The flared printed slot-type directional antenna includes a substrate having a floorplan, in which the slot is etched along a profile having a longitudinal axis, and a line for supplying power to the slot, and is characterized in that the substrate comprises at least one first and one second portion which are folded along an axis that is parallel to said longitudinal axis, and which form an angle A relative to one another. | 10-31-2013 |
20130293321 | ACTIVE BAND STOP FILTER - The present invention relates to an active band stop filter comprising a filter input and a filter output which are linked by a transmission line LT, a resonator RE coupled to the transmission line and connectable to a load impedance. Between the resonator and the load impedance there is mounted a means of activation of the filtering function in a chosen operating band. The filter is useable in multistandard terminals. | 11-07-2013 |
20130315117 | CONCURRENT-ACCESS DUAL-BAND TERMINAL OPERATING IN TWO ADJACENT BANDS - The present invention relates to a terminal for the broadband transmission of video, audio or data signals in a domestic environment. It applies more specifically in the scope of terminals operating according to the standard IEEE 802.11 | 11-28-2013 |
20140111393 | COMPACT SLOT ANTENNA - The present invention relates to a compact slot antenna formed, in a multilayer substrate comprising, in order, at least one first conductive layer, a first dielectric layer, a second conductive layer, a second dielectric layer and a third conductive layer, of a first slot-line realised in the second conductive layer, said first slot-line being connected to the supply of the antenna, of a second and a third slot-lines realised respectively in the first and in the third conductive layers, the second and third slot-lines each being delimited by two conductive strips of which a first extremity, supply side, is interconnected by a via passing through a window realised in the second conductive layer and a second extremity connected to the second conductive layer, both conductive strips on the side of the second extremity being, either in open circuit, or in short circuit, the electrical length of the first, second and third slot-lines being a function of the wavelength at the operating frequency of the antenna. | 04-24-2014 |
20140159835 | DUAL-BAND MICROSTRIP-TO-SLOTLINE TRANSITION CIRCUIT - This invention relates to a microstrip to slotline transition circuit operating on two frequency bands, in which a first filtering circuit is connected between a first portion of microstrip line and a first input/output port, said first circuit and the portion of microstrip line being adapted to accept the frequencies from a first frequency band and reject the frequencies of a second frequency band, a second filtering circuit is connected between a second portion of microstrip line and a second input/output port, said second circuit and the portion of microstrip line being adapted to accept the frequencies from the second frequency band and reject the frequencies from the first frequency band, and the slotline is sized to provide an impedance that is substantially equal to the impedance of an open circuit at the coupling zone between the microstrip line and the slotline. | 06-12-2014 |
20140159987 | RADIO FREQUENCY DEVICE WITH COMPENSATION OF PERMITTIVITY DISPERSION OF THE SUBSTRATE AND ADJUSTMENT METHOD - The invention relates to a device for transmitting and/or receiving radio frequency signals comprising at least one antenna and/or at least one filter realised in printed technology on a dielectric substrate. According to the invention, this device is equipped with means for compensating the permittivity dispersions of the substrate. For this purpose, the device comprises a circuit for measuring the dielectric permittivity of the substrate able to deliver a measured permittivity value and adjustment means able to adjust the impedance of the antenna and/or the frequency response of said filter according to said measured permittivity value. | 06-12-2014 |
20140340174 | ACTIVE FILTER WITH DUAL RESPONSE - Based on an active low-pass filter structure comprising a main conductor line between an input port and an output port, consisting of an input conductor section, an output conductor section, and an inductance network in series between the input and output sections, the inductance network being coupled to the LC resonators, an LC resonator connected to each junction point between two network inductances, and at least one negative resistance in series with one of the resonators, a dual response filter is formed by providing an auxiliary conductor line, wherein an input end of the filter is connected to an electrical ground, forming a resonator with its own resonant frequency less than the cut-off frequency f | 11-20-2014 |
20150022280 | MICROSTRIP LINE/SLOT LINE TRANSITION CIRCUIT - The invention relates to a circuit for transition from a microstrip line to a slot line. According to the invention, the slot line of the transition circuit is equipped with a filter for providing on the slot line, at the crossover zone of the microstrip line and the slot line, an impedance substantially equal to the impedance of an open circuit for at least one desired frequency of the signal and an impedance substantially equal to the impedance of a short circuit for at least one undesirable frequency of the signal. Advantageously, the microstrip line is also equipped with a filter for providing on the microstrip line, at the crossover zone, an impedance substantially equal to the impedance of a short circuit for the desired frequency and an impedance substantially equal to the open-circuit impedance for the undesirable frequency. | 01-22-2015 |