CONTINUOUS TIME QUANTIFICATION DEVICE, RADIO FREQUENCY SIGNAL RECEIVER COMPRISING SUCH DEVICE, AND CONTINUOUS TIME QUANTIFICATION METHOD

摘要

The quantization device (10) of an input analog signal (Vin) for supplying a quantized multi-bit continuous time output signal (Bs, Benv) comprises an electronic circuit (12) of sign analysis, adapted to provide a first continuous time binary signal (Bs) representative of a first sign bit of the output signal. It further comprises an electronic envelope analysis circuit (16) comprising a comparator / quantizer (18) with two inputs, one of which receives the analog input signal (Vin), designed to output the comparator. / quantizing a second quantized continuous time signal (Benv) representative of at least a second bit of the output signal, called the quantized envelope signal. The envelope analysis electronic circuit (16) further comprises a feedback loop (20, 22) with a continuous-time digital-to-analog conversion of the envelope quantized signal (Benv), arranged between the output and the other two inputs of the comparator / quantizer (18).