Nemerix Sa

Qualcomm Incorporated

Francesco Piazza

Claudio Cantoro

Zlatan Gradincic

Paolo Orsatti

Roberto Materni

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 (), a digital controller (), sensitive to the output of the filter in the calibration configuration, and a DAC () to provide an analogue control signal () to the gm inputs of the transconductance amplifiers () composing the filter.

Apparatus and method for tuning a GM-C filter

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 () 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.

GPS receiver with fast acquisition time

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.

Multiband GNSS receiver

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.

Growing community of inventors

Bioggio, Switzerland

Francesco Piazza