Device of radioelectric signals transmitter and/or receiver type
View Patent ↗Radiofrequency device ( 30; 30′; 30″; 30 ′″) controlling means for supplying at least one electrical load ( 14, 14 ′) and comprising a radiofrequency unit ( 11 ) of radiofrequency signals transmitter and/or receiver type and connected by a first conductor ( 9 b ) to the AC mains ( 9 ), wherein the radiofrequency unit comprises a radiofrequency signal output and/or input ( 20 ) connected by an HF link ( 19 ) to a first terminal ( 21 ) of a tuning circuit ( 17; 17 ′) of the radiofrequency device, this tuning circuit being: connected by a second terminal ( 22 ) to the first conductor, connected by a third terminal ( 23 ) to an electrical ground (GND) of the radiofrequency unit, furnished with means (L 1 , C 1 ; L 2 , C 3 , C 4 ) for blocking the conduction of radiofrequency signals on the first conductor between the second terminal and the third terminal, and traversed between the second terminal and the third terminal by the AC current (I-ACT) flowing in the first conductor and supplying said electrical load.
1. A radiofrequency device controlling means for supplying at least one electrical load and comprising a radiofrequency unit of radiofrequency signals transmitter and/or receiver type and connected by a first conductor to the AC mains, wherein the radiofrequency unit comprises a radiofrequency signal output and/or input connected by an HF link to a first terminal of a tuning circuit of the radiofrequency device, this tuning circuit being:
connected by a second terminal to the first conductor,
connected by a third terminal to an electrical ground of the radiofrequency unit,
equipped with means for blocking the conduction of radiofrequency signals on the first conductor between the second terminal and the third terminal, and
traversed between the second terminal and the third terminal by the AC current flowing in the first conductor and supplying said electrical load.
2. The radiofrequency device as claimed in claim 1 , wherein the tuning circuit is connected by the third terminal to the electrical ground by direct link.
3. The radiofrequency device as claimed in claim 1 , wherein the tuning circuit is connected by the third terminal to the electrical ground by capacitive link.
4. The radiofrequency device as claimed in claim 2 , wherein the means for blocking the conduction of radiofrequency signals comprise, between the second and third terminals, a first winding mounted in parallel with a capacitor.
5. The radiofrequency device as claimed in claim 4 , wherein the first terminal is connected: either directly between the two ends of the first winding, or to the common terminal of two capacitors arranged in series with a second winding coupled to the first winding so as to form a transformer.
6. The radiofrequency device as claimed in claim 2 , wherein the means for blocking the conduction of radiofrequency signals comprise, between the second and third terminals, a winding mounted in parallel with two capacitors in series, the first terminal being connected to the terminal common to the two capacitors.
7. The radiofrequency device as claimed in claim 1 , wherein the tuning circuit comprises a winding embodied in the form of printed turns.
8. The radiofrequency device as claimed in claim 1 , wherein the radiofrequency signals have a frequency greater than 100 MHz.
9. The radiofrequency device as claimed in claim 1 , wherein the radiofrequency unit is connected to a second conductor of the AC network and supplied by the AC network.
10. The radiofrequency device as claimed in claim 1 , wherein the first and/or the second conductor of the AC mains constitutes a receiving or transmitting antenna of indeterminate length for the radiofrequency signals, the latter being of RF type and received and/or transmitted between the aerial medium and the radiofrequency unit via this antenna.
11. A home-automation device comprising at least one electrical load and ensuring a function of comfort, energy management and/or security in a building or its environs, which device comprises a radiofrequency device as claimed in claim 1 , supplied by the first and second conductors and wherein said electrical load is supplied by a power supply current passing through the tuning circuit between the second and third terminals.
12. The home-automation device as claimed in claim 11 , which device comprises several modes of activity, the power supply current passing through the tuning circuit between the second and third terminals being dependent on the mode of activity.
13. The radiofrequency device as claimed in claim 3 , wherein the means for blocking the conduction of radiofrequency signals comprise, between the second and third terminals, a first winding mounted in parallel with a capacitor.
14. The radiofrequency device as claimed in claim 3 , wherein the means for blocking the conduction of radiofrequency signals comprise, between the second and third terminals, a winding mounted in parallel with two capacitors in series, the first terminal being connected to the terminal common to the two capacitors.