WIRELESS POWER RANGE INCREASE USING PARASITIC RESONATORS
Described herein are embodiments of a system that includes a first system including a high-Q resonator of a first size, transmitting wireless power via a magnetic field; and a repeater high-Q resonator, of a second size, transmitting said wireless power in an area.
1 . A system, comprising:
a first system including a high-Q resonator of a first size, transmitting wireless power via a magnetic field; and
a repeater high-Q resonator, of a second size, transmitting said wireless power in an area.
2 . A system as in claim 1 , wherein said repeater resonator is formed of an inductive loop and a capacitance.
3 . A system as in claim 2 , wherein said inductive loop is formed of stranded wire with strands that are electrically isolated from one another.
4 . A system as in claim 1 , wherein said first system includes a frequency generator, and a matching system, said matching system including an inductive coupling, and a capacitor on a secondary side of said inductive coupling.
5 . A system as in claim 2 , wherein said repeater resonator includes a tuning part that is adjustable to change a resonant frequency of said repeater resonator.
6 . A system as in claim 5 , wherein said tuning part includes a variable capacitance.
7 . A system as in claim 5 , wherein said part only adjusts said resonant frequency in a downward direction.
8 . A system as in claim 5 , wherein said tuning part tunes the inductance of said inductive loop.
9 . A system as in claim 8 , wherein said part is a variable size to change an area of the inductive loop.
10 . A system as in claim 9 , wherein said part is triangular.
11 . A system as in claim 6 , wherein said variable capacitance is a switched capacitance.
12 . A system of at least two high-Q resonators, comprising:
a repeater resonator, tuned to receive and transfer magnetically-generated wireless power in an area of said repeater resonator.
13 . A system as in claim 12 , wherein said repeater resonator is formed of an inductive loop and a capacitance.
14 . A system as in claim 13 , wherein said inductive loop is formed of a material that reduces the AC resistance of a wire used for the repeater resonator without increasing an actual cross sectional area of the wire.
15 . A system as in claim 14 , wherein said inductive loop is formed of stranded wire with strands that are electrically isolated from one another.
16 . A system as in claim 12 , further comprising a source resonator that generates magnetic energy.
17 . A system as in claim 13 , wherein said repeater resonator includes a tuning part that is adjustable to change a resonant frequency of said repeater resonator.
18 . A system as in claim 17 , wherein said tuning part includes a variable capacitance.
19 . A system as in claim 17 , wherein said tuning part only adjusts said resonant frequency in a downward direction.
20 . A system as in claim 17 , wherein said tuning part tunes the inductance of said inductive loop.
21 . A system as in claim 20 , wherein said tuning part has a variable size to change an area of the inductive loop.
22 . A system as in claim 21 , wherein said part is triangular in its outer shape.
23 . A system as in claim 19 , wherein said variable capacitance is a switched capacitance.
24 . A system of at least two high-Q resonators, comprising:
a repeater resonator, formed of an inductive loop in series with a capacitance, said inductive loop is formed of a material that reduces the AC resistance of a wire used for the repeater resonator without increasing an actual cross sectional area of the wire, an LC value of the inductive loop and capacitance defining a resonant frequency at a specified frequency, to receive and transfer said specified frequency of magnetically-generated wireless power in an area of said repeater resonator.
25 . A system as in claim 24 , wherein said inductive loop is formed of stranded wire with strands that are electrically isolated from one another.
26 . A system as in claim 24 , wherein said stranded wire is Litz wire.
27 . A system as in claim 24 , further comprising a source resonator that generates magnetic energy at said specified frequency.
28 . A system as in claim 24 , wherein said repeater resonator includes a tuning part that is adjustable to change a resonant frequency of said repeater resonator.
29 . A system as in claim 28 , wherein said tuning part includes a variable capacitance.
30 . A system as in claim 28 , wherein said tuning part only adjusts said resonant frequency in a downward direction.
31 . A system as in claim 28 , wherein said tuning part tunes the inductance of said inductive loop.
32 . A system as in claim 31 , wherein said tuning part has a variable size to change an area of the inductive loop.
33 . A system as in claim 29 , wherein said variable capacitance is a switched capacitance.
34 . A system of at least two high-Q resonators, comprising:
a repeater resonator, formed of an inductive loop in series with a capacitance, an LC value of the inductive loop and capacitance tuned to a resonant frequency at a specified frequency, to receive and transfer said specified frequency of magnetically-generated wireless power in an area of said repeater resonator, said repeater resonator including a tuning part that is adjustable to change a resonant frequency of said repeater resonator by tuning the inductance of said inductive loop.
35 . A system as in claim 34 , wherein said inductive loop is formed of a material that reduces the AC resistance of a wire used for the resonator without increasing an actual cross sectional area of the wire.
36 . A system as in claim 34 , further comprising a source resonator which generates magnetic power at said specified frequency.
37 . A system as in claim 34 , wherein said part has a variable size to change an area of the inductive loop.
38 . A system as in claim 37 , wherein said part is triangular.
39 . A system for wirelessly transmitting power to a high-Q resonator, comprising:
a wireless power transmitter, including a magnetic field generator, that generates a magnetic field at a specified frequency, and a source high-Q resonator that transmits wireless power by producing a magnetic field that has said specified frequency, said source resonator having an inductance, and having a capacitance, forming an LC value that is substantially resonant with said specified frequency, said inductance formed by a conducting loop that extends around a-perimeter of an area.
40 . A system as in claim 39 , further comprising a repeater resonator, smaller than said loop of said source resonator, and generating said wireless power in an area.
41 . A method, comprising:
producing wireless power from a first conducting loop that forms a first part of a first high-Q magnetic resonator and which produces wireless power as a magnetic field;
using a repeater resonator, within a range of said first magnetic resonator, to transfer said wireless power; and
receiving said magnetic power that has been transferred by said repeater resonator wirelessly into a portable device comprising a second high-Q magnetic resonator and using said power to power said device.
42 . A method as in claim 41 , wherein said first magnetic resonator has a larger outer size than said second magnetic resonator.
43 . A method as in claim 41 , further comprising using a material that reduces the AC resistance of a wire used for the magnetic resonator without increasing an actual cross sectional area of the wire.
44 . A method as in claim 41 , wherein said producing uses a first resonator that surrounds a perimeter of a room.
45 . A method as in claim 44 , wherein said first resonator is at different height levels in the room.
46 . A method as in claim 41 , further comprising tuning a resonant frequency of said repeater resonator.
47 . A method as in claim 46 , wherein said tuning comprises changing a value of a variable capacitance.
48 . A method as in claim 46 , wherein said tuning comprises tuning the inductance of said inductive loop.
49 . A system as in claim 1 , wherein said second size is smaller than said first size.
50 . A system for wirelessly transmitting power between at least two high-Q resonators, comprising:
at least one high-Q resonator; and
a tuning modifying part, formed of a loop whose area is changeable to modify a resonant frequency of said resonator.
51 . A system as in claim 50 , wherein said tuning modifying part is modified to have a first area to set a first resonant frequency in said resonator, and is modified to have a second area to set a second resonant frequency in said resonator.
52 . A system as in claim 50 , wherein said resonator includes inductance connected to a capacitance.
53 . A system as in claim 52 , wherein said tuning modifying part modifies the area enclosed by said inductance.
54 . A system as in claim 50 , further comprising a circuit, connected to said resonator, for wirelessly receiving power.
55 . A system as in claim 50 , further comprising a circuit, connected to said resonator, for wirelessly transmitting power.
56 . A method for wirelessly transmitting power between at least two high-Q resonators, comprising:
using an LC resonator to receive wireless power at a resonant frequency; and
tuning said LC resonator to increase the resonant frequency of said antenna.
57 . A method as in claim 56 , wherein said tuning comprises modifying a loop whose area is changeable to modify a resonant frequency of said resonator.
58 . A system as in claim 57 , wherein said tuning controls said loop to a first area to set a first resonant frequency in said resonator, and changes to a second area to set a second resonant frequency in said resonator.
59 . A method for wirelessly transmitting power between at least two high-Q resonators, comprising:
using an LC resonator to transmit wireless power at a resonant frequency; and
tuning said LC resonator to increase the resonant frequency of said antenna.
60 . A method as in claim 59 , wherein said tuning comprises modifying a loop whose area is changeable to modify a resonant frequency of said resonator.
61 . A method as in claim 60 , wherein said tuning controls said loop to a first area to set a first resonant frequency in said resonator, and changes to a second area to set a second resonant frequency in said resonator.