Wireless energy transfer system and method for feeding an electric load
First Claim
1. A wireless energy transfer system comprising:
- a transmitter comprising a frequency sweeper, a radiofrequency signal generator adapted to generate a radiofrequency signal, and a first resonant circuit adapted to transmit a generated radiofrequency signal; and
a receiver adapted to receive the generated radiofrequency signal and comprising a second resonant circuit having a resonant frequency,wherein the second resonant circuit is adapted to be located in a non-radiative near field generated by the first resonant circuit,wherein, based on a signal outputted by the frequency sweeper, the radiofrequency signal generator—
is configured to generate a plurality of cycles of radiofrequency signals, wherein each radiofrequency signal in a cycle comprises a different frequency in a range of possible signal frequencies centered on a nominal frequency, wherein each cycle comprises at least one radiofrequency signal comprising a signal frequency that matches the resonant frequency and each cycle comprises at least one radiofrequency signal comprising a signal frequency that does not match the resonant frequency, andwherein each radiofrequency signal in each cycle of radiofrequency signals is transmitted by the first resonant circuit having a first impedance.
1 Assignment
0 Petitions
Accused Products
Abstract
A wireless energy transfer system and an associated method for feeding an electric load are provided. The system includes a transmitter which includes a generator adapted to generate a radiofrequency signal at a first frequency and a first resonant circuit adapted to transmit the radiofrequency signal; and a receiver adapted to receive the radiofrequency signal and comprising a second resonant circuit. The second resonant circuit is adapted to be located in the non-radiative near field generated by the first resonant circuit, and the transmitter includes frequency sweeping functionality, which imposes on the radiofrequency signal generator a cyclic excursion of the first frequency in the neighborhood of a nominal frequency of the generator so that, when the first frequency matches the resonant frequency of the second resonant circuit, a non-radiative energy transfer occurs.
15 Citations
18 Claims
-
1. A wireless energy transfer system comprising:
-
a transmitter comprising a frequency sweeper, a radiofrequency signal generator adapted to generate a radiofrequency signal, and a first resonant circuit adapted to transmit a generated radiofrequency signal; and a receiver adapted to receive the generated radiofrequency signal and comprising a second resonant circuit having a resonant frequency, wherein the second resonant circuit is adapted to be located in a non-radiative near field generated by the first resonant circuit, wherein, based on a signal outputted by the frequency sweeper, the radiofrequency signal generator—
is configured to generate a plurality of cycles of radiofrequency signals, wherein each radiofrequency signal in a cycle comprises a different frequency in a range of possible signal frequencies centered on a nominal frequency, wherein each cycle comprises at least one radiofrequency signal comprising a signal frequency that matches the resonant frequency and each cycle comprises at least one radiofrequency signal comprising a signal frequency that does not match the resonant frequency, andwherein each radiofrequency signal in each cycle of radiofrequency signals is transmitted by the first resonant circuit having a first impedance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
-
-
16. A method of wireless energy transfer, comprising the steps of:
-
transmitting a plurality of cycles of generated radiofrequency signals by a first resonant circuit, each generated radiofrequency signal comprising a frequency in a range of possible signal frequencies centered on a nominal frequency, wherein each cycle of radiofrequency signals comprises a plurality of radiofrequency signals, wherein each radiofrequency signal in the plurality of radiofrequency signals comprises a different frequency in a range of possible signal frequencies, wherein the range of possible signal frequencies comprises at least one signal frequency that matches a resonant frequency of a second resonant circuit and at least one signal frequency that does not match the resonant frequency of the second resonant circuit, and wherein each radiofrequency signal in each cycle of radiofrequency signals is transmitted by the first resonant circuit having a first impedance; and receiving said plurality of radiofrequency signals by the second resonant circuit, wherein the second resonant circuit is located in a non-radiative near field generated by the first resonant circuit. - View Dependent Claims (17, 18)
-
Specification