Radiofrequency communication device using a TORP signal

Patent metadata

Field	Value
Publication number	US-9859991-B2
Application number	US-201514792814-A
Country	US
Kind code	B2
Filing date	Jul 7, 2015
Priority date	Jul 8, 2014
Publication date	Jan 2, 2018
Grant date	Jan 2, 2018

Abstract

Radiofrequency communication device comprising at least one TORP signal generation circuit, the TORP signal corresponding to oscillations trains periodically repeated at a frequency F PRP for which the oscillation frequency is F OL >F PRP and for which each oscillations train lasts for a duration of less than 1/F PRP , 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.

First claim

The invention claimed is:

1. A radiofrequency communication device comprising:
at least one TORP signal generation circuit, a TORP signal generated by the at least one TORP signal generation circuit corresponding to oscillations trains periodically repeated at a frequency FPRP for which the oscillation frequency is FOL>FPRP and for which each oscillations train lasts for a duration of less than 1/FPRP, the TORP signal having a zero value between the oscillation trains, and
at least one multiplier circuit including an input coupled to an output of said at least one TORP signal generation circuit applying the TORP signal on said input of the at least one multiplier circuit such that the multiplier circuit is configured to multiply the TORP signal with at least one of a baseband signal comprising information intended to be transmitted by the radiofrequency communication device and a radiofrequency signal intended to be received by the radiofrequency communication device.

2. The device according to claim 1 , wherein said at least one multiplier circuit corresponds to a first multiplier circuit configured to multiply the TORP signal with the baseband signal and to a second multiplier circuit configured to multiply the TORP signal with the radiofrequency signal.

3. The device according to claim 2 , wherein said at least one TORP signal generation circuit corresponds to a first TORP signal generation circuit for which one output is coupled to an input of the first multiplier circuit and to a second TORP signal generation circuit for which one output is coupled to an input of the second multiplier circuit.

4. The device according to claim 1 , further comprising:
at least two switches configured to couple the output of said at least one TORP signal generation circuit with the input of at least one of the multiplier circuits through direct interconnection or via a first circuitry configured to use the TORP signal to generate a periodic signal for which a frequency spectrum comprises a principal line corresponding to one of the lines in the TORP signal spectrum and configured to act as a passband filter applied to the TORP signal and configured to reject lines other than the principal line of said periodic signal from the frequency spectrum of said periodic signal.

5. The device according to claim 4 , wherein the first circuitry configured to generate said periodic signal comprises at least one injection locked oscillator configured to receive the TORP signal as input and to be at least periodically locked to a frequency at which the principal line of said periodic signal is located.

6. The device according to claim 1 , wherein said at least one TORP signal generation circuit comprises at least:
an oscillator configured to generate a periodic signal with frequency FOL, and
a second circuitry that can be controlled by a periodic signal with frequency FPRP, and that is connected to an electrical power supply input of the oscillator such that the second circuitry generates a non-zero power supply voltage of the oscillator only during part of each period 1/FPRP, or that is connected to an output of the oscillator such that the second circuitry cuts off an electrical connection between the output of oscillator and an output of the TORP signal generation circuit during only part of each period 1/FPRP.

7. The device according to claim 6 , further comprising:
at least one switch configured to output either the periodic signal with frequency FPRP in a first configuration, or the baseband signal in a second configuration, onto a control input of the second circuitry of said at least one TORP signal generation circuit, and at least one switch configured to output either the baseband signal in the first configuration, or a constant amplitude signal corresponding to the amplitude of a bit with value in the second configuration, onto an input of the multiplier circuit.

8. The device according to claim 6 , further comprising:
at least one phase locked loop configured to output the periodic signal with frequency FPRP.

9. The device according to claim 1 , wherein the output of said at least one TORP generation circuit is directly coupled to the input of said at least one multiplier circuit.

10. The device according to claim 1 , wherein the TORP signal has the zero value during an entirety of an interval between the oscillation trains.

11. A radiofrequency communication method, comprising:
generating, in at least one TORP generation circuit, at least one TORP signal corresponding to oscillations trains periodically repeated at a frequency FPRP of which the oscillations are at frequency FOL>FPRP and for which each oscillations train has a duration of less than 1/FPRP, the at least one TORP signal having a zero value between the oscillation trains;
applying the TORP signal to an input of at least one multiplier circuit; and
multiplying, in the at least one multiplier circuit, the at least one TORP signal with at least one of a baseband signal comprising information to be transmitted and a received radiofrequency signal.

12. The method according to claim 11 , further comprising:
implementing at least one of a first multiplication between a first TORP signal and the baseband signal, and a second multiplication between a second TORP signal and the received radiofrequency signal.

Assignees

• Commissariat Energie Atomique

Inventors

• Jany Clement
• Siligaris Alexandre

Classifications

• H04B1/7174 Primary

  Pulse generation (in general H04L25/03834) · CPC title

• H04B15/04 Primary

  the interference being caused by substantially sinusoidal oscillations, e.g. in a receiver or in a tape-recorder · CPC title