Abstract: A tunable filter comprises at least two resonator circuits placed between two matching networks characterized in that: one resonator is connected at a first of its ends to the ground plane M of the filter by metallized holes and at a second end to a MEMS network; the distance between the two resonators forms an inter-resonator inductive coupling circuit; an inter-resonator coupling capacitor is formed by two etched lines connected to the first and second resonators; the MEMS networks are distributed around the ends of the resonators; the MEMS networks are connected between the first and second resonator and the ground plane M by means of metallized holes; and the filter comprises a number of independent electrical control voltages designed to actuate the MEMS.

Abstract: A tunable filter comprises at least two resonator circuits placed between two matching networks characterized in that: one resonator is connected at a first of its ends to the ground plane M of the filter by metallized holes and at a second end to a MEMS network; the distance between the two resonators forms an inter-resonator inductive coupling circuit; an inter-resonator coupling capacitor is formed by two etched lines connected to the first and second resonators; the MEMS networks are distributed around the ends of the resonators; the MEMS networks are connected between the first and second resonator and the ground plane M by means of metallized holes; and the filter comprises a number of independent electrical control voltages designed to actuate the MEMS.

Abstract: The invention relates to a wireless transmitting and receiving module including a radiofrequency module filtering and amplifying the wireless signals received, a high intermediate frequency module transposing the wireless signals received to a high intermediate frequency, the transpositions being carried out by mixing of the wireless signals with signals of known frequency generated by local oscillator modules, and a low intermediate frequency module transposing the wireless signals received to a low intermediate frequency. In particular, the invention applies to the radiocommunication software modules that can receive and/or transmit on the broad band, that is to say in a frequency range from 30 MHz to 3 GHz.

Abstract: The invention relates to a wireless transmitting and receiving module including a radiofrequency module filtering and amplifying the wireless signals received, a high intermediate frequency module transposing the wireless signals received to a high intermediate frequency, the transpositions being carried out by mixing of the wireless signals with signals of known frequency generated by local oscillator modules, and a low intermediate frequency module transposing the wireless signals received to a low intermediate frequency. In particular, the invention applies to the radiocommunication software modules that can receive and/or transmit on the broad band, that is to say in a frequency range from 30 MHz to 3 GHz.

Abstract: A switched capacitor is characterized in that it comprises a series MEMS-type switch, the capacitor to be switched being integrated into the structure of the MEMS switch and being formed by an additional metal layer produced on part of the dielectric layer of the MEMS switch, the capacitance of the switched capacitor being set as a function of the area of the metal layer.

Abstract: A precise 3D position-finding system and method comprises at least the following elements: a set of beacons working on the basis of differential global positioning satellites (DGPS), the beacons being connected to one another and temporally synchronized, spread-spectrum radio means between the members of the network whose position is to be located and said beacons, and a computation station. The computation station is provided with a processor adapted to finding the position of one or more elements from a list of direct paths and/or multiple paths with the time and direction of arrival of each of the direct paths and/or multiple paths, and from the position of the beacons and in taking account of data that represents obstacles.

Abstract: A precise 3D position-finding system and method comprises at least the following elements: a set of beacons working on the basis of differential global positioning satellites (DGPS), the beacons being connected to one another and temporally synchronized, spread-spectrum radio means between the members of the network whose position is to be located and said beacons, and a computation station. The computation station is provided with a processor adapted to finding the position of one or more elements from a list of direct paths and/or multiple paths with the time and direction of arrival of each of the direct paths and/or multiple paths, and from the position of the beacons and in taking account of data that represents obstacles.