Abstract: An apparatus to control a tuneable Gm-C filter, including and a filter that can be reconfigured as a free running oscillator by toggling the feedback sign of an output amplifier (304), a digital controller (42), sensitive to the output of the filter in the calibration configuration, and a DAC (44) to provide an analogue control signal (48) to the gm inputs of the transconductance amplifiers (310, 320) composing the filter.

Abstract: An apparatus to control a tuneable Gm-C filter, including and a filter that can be reconfigured as a free running oscillator by toggling the feedback sign of an output amplifier (304), a digital controller (42), sensitive to the output of the filter in the calibration configuration, and a DAC (44) to provide an analogue control signal (48) to the gm inputs of the transconductance amplifiers (310, 320) composing the filter.

Abstract: Method for acquiring a plurality of GPS signals, in which the signals received from the space vehicles are correlated, in an array of parallel processing modules (20) with local replicas of a pseudorandom code. The local pseudorandom code generators are slewed periodically, on detection of an external periodical trigger INT_ACC, and the correlation data are dumped simultaneously to all processing modules in output registers for acquisition and tracking software. The integration period is shorter than the natural period of the pseudorandom code sequence, and all the local generators are slewed at the same time, thereby allowing a quicker acquisition of the SV C/A code.

Abstract: Method for acquiring a plurality of GPS signals, in which the signals received from the space vehicles are correlated, in an array of parallel processing modules (20) with local replicas of a pseudorandom code. The local pseudorandom code generators are slewed periodically, on detection of an external periodical trigger INT_ACC, and the correlation data are dumped simultaneously to all processing modules in output registers for acquisition and tracking software. The integration period is shorter than the natural period of the pseudorandom code sequence, and all the local generators are slewed at the same time, thereby allowing a quicker acquisition of the SV C/A code.

Abstract: RF receiver for GNSS signals, (e.g., GPS, Galileo, Glonass), composed of a single chip and a low number of external components, has a number of independent signal paths each including a separate IF stage and baseband down-converter. Each signal path is tuned to a specific IF band by selection of external IF filters. Conversion to IF involves a common local carrier generator.

Abstract: RF receiver (40) for GNSS signals, (GPS, Galileo, Glonass), composed of a single chip (45) and a low number of external components, has a number of independent signal paths (180a-180-c) each including a separate IF stage and baseband down-converter (160). Each signal path is tuned to a specific IF band by selection of external IF filters. Conversion to IF involves a common local carrier generator (RF-LO).

Abstract: Method for acquiring a plurality of GPS signals, in which the signals received from the space vehicles are correlated, in an array of parallel processing modules (20) with local replicas of a pseudorandom code. The local pseudorandom code generators are slewed periodically, on detection of an external periodical trigger INT_ACC, and the correlation data are dumped simultaneously to all processing modules in output registers for acquisition and tracking software. The integration period is shorter than the natural period of the pseudorandom code sequence, and all the local generators are slewed at the same time, thereby allowing a quicker acquisition of the SV C/A code.

Abstract: An RF receiver or another type of electronic circuit contains circuit elements a setting of which is controlled by at least one control voltage. Furthermore, a control unit is provided for switching off the circuit elements during power-off periods. While the circuit elements are switched off, the control voltage is stored in storage capacitors, which allows to start the circuit up quickly after a switch-off period.

Abstract: An RF receiver or another type of electronic circuit contains circuit elements a setting of which is controlled by at least one control voltage. Furthermore, a control unit is provided for switching off the circuit elements during power-off periods. While the circuit elements are switched off, the control voltage is stored in storage capacitors, which allows to start the circuit up quickly after a switch-off period.

Abstract: A new architecture for the implementation of radar displays is provided which uses a mixed architecture superposing a PPI (Plan Position Indicator) type display on a raster display. The polar (analog) signal and the cartesian (digital) signal are displayed on the screen by means of suitable multiplexing and synchronization electronics so that the processor managing the screen "sees" a cartesian display, but the cartesian display is periodically interrupted and the polar display is interjected and is displayed in a polar format.