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

Clement Jany

Alexandre Siligaris

Baudouin Martineau

Jose-Luis Gonzalez Jimenez

Frederic Hameau

Cedric Dehos

A carrier recovery system for a receiver of a phase-modulated signal N-PSK, the system including a first pre-conditioning circuit of the signal received (S(t)), with the pre-conditioned signal (SP(t)) having a component, non-modulated in phase, at the frequency N&#x192;where &#x192;is the carrier used for the modulation N-PSK, and a carrier regeneration circuit to regenerate two sinusoidal signals in quadrature at the frequency &#x192;, with these signals being phase locked with respect to said non-modulated component in phase of the pre-conditioned signal.

Carrier recovery analog system for a receiver of a N-PSK signal

Device for adjusting the locking of an injection locked frequency multiplier, including:

Device for adjusting the locking of an injection locked frequency multiplier

A frequency synthesis device with high multiplication rank, including a base frequency generator generating two first base signals of square shape of same frequency and opposite to each other, a first synthesis stage including two first switching power supply oscillators, of which the power supplies are respectively switched by the two first base signals, a second synthesis stage including a second switching power supply oscillator of which the supply is switched by a combination of the output signals of the two first oscillators, the output of the second switching power supply oscillator being filtered by a frequency discriminator circuit realized with an injection locked oscillator.

Frequency synthesis device with high multiplication rank

Radiofrequency communication device comprising at least one TORP signal generation circuit, the TORP signal corresponding to oscillations trains periodically repeated at a frequency Ffor which the oscillation frequency is F&#x3e;Fand for which each oscillations train lasts for a duration of less than 1/F, and at least one multiplier circuit for which an input is coupled to an output of said at least one TORP signal generation circuit such that it is capable of multiplying the TORP signal with a baseband signal comprising at least one of information intended to be transmitted by the radiofrequency communication device and a radiofrequency signal intended to be received by the radiofrequency communication device.

Radiofrequency communication device using a TORP signal

A radiofrequency receiver device including: a local oscillator oscillating at an adjustable local frequency; a mixer receiving radiofrequency signals and the output of the local oscillator for the supply of intermediate-frequency signals; a filtering system configured and positioned to filter the signals according to a bandpath with an adjustable frequency bandwidth; and a data detector in the intermediate-frequency signals. It further includes means for adjusting the local frequency of the local oscillator, between minimum and maximum oscillation frequencies, and for adjusting the bandpath of the filtering system, between minimum and maximum frequency bandwidths, wherein the adjusting means are suitable for adjusting the local frequency and the bandpath until the detector detects a predetermined identification code in one of the intermediate-frequency signals.

Radiofrequency receiver device, method for adjusting such a device and corresponding computer program

A frequency synthesis device including: a first generator configured to generate a periodic signal of frequency f; a second and third generator, coupled with the first generator and configured to receive as an input the periodic signal of frequency fand to generate a signal Scorresponding to a train of oscillations of frequency substantially equal to N&#xb7;f, of a time less than T=1/fand repeated periodically at the frequency f, where N is a whole number greater than 1; and a fourth generator configured to generate, from the signal S, a periodic signal wherein a frequency spectrum includes a primary line of frequency f=(N+i)&#xb7;f, where i is a whole number.

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Grenoble, France

Clement Jany