Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Clément Jany

Baudouin Martineau

Alexandre Siligaris

José-Luis Gonzalez Jimenez

Frédéric Hameau

Michaël Pelissier

Cédric Dehos

Mykhailo Zarudniev

Etienne Antide

Michel Durr

The present description concerns a radio transmission device including a plurality of elementary cells, each including a transmit circuit and an antenna connected to an output terminal of the transmit circuit, each transmit circuit including a power detector coupled to its output terminal, the device further including a control circuit configured to: a) simultaneously activating in transmit mode a first cell, deactivating in transmit mode a second cell, and reading from an output node of the power detector of the second cell a signal representative of a radio frequency power received on the output terminal of the second cell via the antenna of the second cell; and b) deducing from the signal read at step a) information relative to the state of the device or of its environment.

Radiofrequency-transmitting device and method for controlling such a device

A generator of a frequency modulated radar signal includes a generator of a periodic signal frequency modulated over a part Tof a period T, corresponding to a square signal of which the frequency varies linearly in a first frequency band Bof central frequency f; an oscillator generating a sinusoidal signal of frequency f>fand included in a second frequency band B>Band corresponding to the linear variation of the frequency of the radar signal; and means coupled to an electrical supply input of the oscillator such that they generate a voltage for supplying the oscillator at the frequency of the frequency modulated periodic signal.

Generator of a frequency modulated radar 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.

Device and method for receiving and demodulating an amplitude-modulated RF signal

A device for OOK modulating an input signal, comprising at least:

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Grenoble, France

Clément Jany