DEVICE AND METHOD FOR RECEIVING AND DEMODULATING AN AMPLITUDE-MODULATED RF SIGNAL

A device for receiving and demodulating an amplitude-modulated RF signal, comprising:a first antenna;a first amplifier coupled to the first antenna;a receiving module including:a) a second antenna;b) a second amplifier coupled to the second antenna;c) a phase-shifter coupled to the second amplifier and applying a phase-shift Φ;d) a mixer comprising inputs coupled to the phase-shifter and to the first amplifier, and outputting a product of signals received at the input,and wherein the value of the phase-shift Φ is such that the device performs a demodulation of the RF signal when a wavefront of the RF signal forms, with an axis of alignment of the antennas, an angle α having a particular value a which depends on the phase-shift Φ and on a distance between the antennas.