Method and apparatus for a wireless power supply
An apparatus for a wireless power supply including a mechanism for receiving a range of RF radiation across a collection of frequencies. The apparatus includes a mechanism for converting the RF radiation across the collection of frequencies, preferably at a same time into DC. A method for a wireless power supply including the steps of receiving a range of RF radiation across a collection of frequencies. There is the step of converting the RF radiation across the collection of frequencies, preferably at a same time into DC.
1. An apparatus for a wireless power supply comprising:
means for receiving a range of RF radiation across a collection of frequencies; and
means for converting the RF radiation across the collection of frequencies into DC, the converting means includes an absorbing mechanism which is resonant for a desired band of RF spectrum.
2. An apparatus as described in claim 1 wherein the absorbing mechanism includes an inductor which is resonant for the desired band of RF spectrum.
3. An apparatus as described in claim 2 wherein the converting means includes a plurality of taps placed at points along the inductor to access the RF energy.
4. An apparatus as described in claim 3 wherein the tap points are calculated by matching the inductor's impedance to the desired band of RF spectrum.
5. An apparatus as described in claim 4 wherein the receiving means includes an antenna.
6. An apparatus as described in claim 5 wherein the converting means includes a rectifying mechanism which rectifies the RF energy and converts it into DC voltage.
7. An apparatus as described in claim 6 wherein the rectifying mechanism includes a plurality of diodes at each tap point which rectifies the RF energy and converts it into DC voltage.
8. An apparatus as described in claim 7 including a storage device for storing the DC voltage.
9. An apparatus as described in claim 8 wherein the antenna impedance is matched 1:1 with the inductor impedance.
10. An apparatus as described in claim 9 wherein the RF spectrum is between 60 Hz to 28 gigahertz.
11. A method for a wireless power supply comprising the steps of:
receiving a range of RF radiation across a collection of frequencies; and
converting the RF radiation across the collection of frequencies into DC, including the step of absorbing the energy.
12. A method as described in claim 11 wherein the absorbing step includes the step of absorbing the energy with an inductor.
13. A method as described in claim 12 wherein the converting step includes the step of accessing the absorbing energy with a plurality of taps on the inductor.
14. A method as described in claim 13 including the step of matching the inductor's impedance to a desired RF range.
15. A method as described in claim 14 wherein the converting step includes the step of rectifying energy available at each tap and converting it into DC voltages.
16. A method as described in claim 15 wherein the rectifying step includes the step of rectifying the energy available at each tap and converting it into DC voltages with diodes.
17. A method as described in claim 16 wherein the converting step includes the step of adding the DC voltages.
18. A method as described in claim 17 wherein the summing step includes the step of integrating the DC voltages among a series capacitor integrator.
19. A method as described in claim 18 including the step of storing the summed DC voltages.
20. A method as described in claim 19 including the step of using the stored DC voltages.