US7893564B2
Active / In Force
US
⏱️ 1.9 years remaining
Phased array wireless resonant power delivery system
Assignee: Avago Technologies International Sales Pte Ltd
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Filing: 2008-09-30
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Granted: 2011-02-22
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Expires: 2028-09-30
Abstract
Abstract A resonant power transmission system for wirelessly delivering electric power to a target device. A transmitter resonant phased array includes a power source operable to source alternating current power at a target frequency. A plurality of transmitting elements, each operable to produce a non-radiated magnetic field, produces a composite non-radiated magnetic field. A plurality of transmitter tuned circuit elements couple the alternating current power to the plurality of transmitting elements. Control circuitry controls the plurality of transmitter tuned circuit elements to direct the composite non-radiated magnetic field toward the target device. Communication circuitry communicates with the target device. The plurality of transmitting elements may be a plurality of coils with the control circuitry individually controlling phase of the non-radiated magnetic fields produced by the plurality of transmitting elements by control of the plurality of transmitter tuned circuit elements. The plurality of coils may be directed mechanically in other embodiments.
Inventors
- 👤 James D. Bennett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:49
CPC Classifications
H; H02; H02J; H02J50/00; H02J50/80; H02J50/10; H02J50/12; H02J50/40; H02J50/402; H02J50/90; H04; H04B; H04B5/00; H04B5/20; H04B5/24; H04B5/26; H04B5/263; H04B5/70; H04B5/79; H04B7/00; H04B7/02; H04B7/04; H04B7/06; H04B7/0613; H04B7/0615; H04B7/0617
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
120 words
A resonant power transmission system for wirelessly delivering electric power to a target device, the resonant power transmission system comprising: a transmitter resonant phased array comprising: a power source operable to source alternating current power at a target frequency; a plurality of transmitting elements, each operable to produce a non-radiated magnetic field, the plurality of transmitting elements operable to produce a composite non-radiated magnetic field; a plurality of transmitter tuned circuit elements operable to couple the alternating current power to the plurality of transmitting elements; and control circuitry operable to control the plurality of transmitter tuned circuit elements to direct the composite non-radiated magnetic field toward the target device; and a communication circuit operable to communicate with the target device.
Claim 2
Dependent Claim
120 words
A resonant power transmission system for wirelessly delivering electric power to a target device, the resonant power transmission system comprising: a transmitter resonant phased array comprising: a power source operable to source alternating current power at a target frequency; a plurality of transmitting elements, each operable to produce a non-radiated magnetic field, the plurality of transmitting elements operable to produce a composite non-radiated magnetic field; a plurality of transmitter tuned circuit elements operable to couple the alternating current power to the plurality of transmitting elements; and control circuitry operable to control the plurality of transmitter tuned circuit elements to direct the composite non-radiated magnetic field toward the target device; and a communication circuit operable to communicate with the target device.
Claim 3
Dependent Claim
52 words
The resonant power transmission system of claim 1 , wherein: the plurality of transmitting elements comprise a plurality of coils; and the control circuitry is operable to individually control phase of the non-radiated magnetic fields produced by the plurality of transmitting elements by control of the plurality of transmitter tuned circuit elements.
Claim 4
Dependent Claim
36 words
The resonant power transmission system of claim 1 , wherein the control circuitry is operable to receive feedback from the target device via the communication circuitry that is used to direct the composite non-radiated magnetic field.
Claim 5
Dependent Claim
25 words
The resonant power transmission system of claim 1 , wherein at least some of the plurality of transmitter tuned circuit elements comprise lumped circuit elements.
Claim 6
Dependent Claim
20 words
The resonant power transmission system of claim 1 , wherein the plurality of transmitting elements are arranged in an array.
Claim 7
Dependent Claim
26 words
The resonant power transmission system of claim 1 , further comprising a target device authentication module for authentication of the target device for wireless power delivery.
Claim 8
Dependent Claim
20 words
The resonant power transmission system of claim 1 , further comprising a frequency selection controller for selecting the target frequency.
Claim 9
Dependent Claim
27 words
The resonant power transmission system of claim 1 , further comprising a beacon module operable to transmit via the communication circuit a beacon regarding wireless power delivery.
Claim 10
Dependent Claim
24 words
The resonant power transmission system of claim 1 , further comprising a directional controller for physically controlling orientation of the plurality of transmitting elements.
Claim 11
Dependent Claim
22 words
The resonant power transmission system of claim 1 , wherein the control circuitry is further operable to dynamically select the target frequency.
Claim 12
Independent Claim
88 words
A method for wirelessly delivering electric power to a target device, the method comprising: sourcing alternating current power at a target frequency; coupling the alternating current power to a plurality of transmitting elements to produce a non-radiated magnetic field by each of the plurality of transmitting elements, the plurality of non-radiated magnetic fields producing a composite non-radiated magnetic field; controlling the non-radiated magnetic fields produced by the plurality of transmitting elements to direct the composite non-radiated magnetic field toward the target device; and communicating with the target device.
Claim 13
Independent Claim
88 words
A method for wirelessly delivering electric power to a target device, the method comprising: sourcing alternating current power at a target frequency; coupling the alternating current power to a plurality of transmitting elements to produce a non-radiated magnetic field by each of the plurality of transmitting elements, the plurality of non-radiated magnetic fields producing a composite non-radiated magnetic field; controlling the non-radiated magnetic fields produced by the plurality of transmitting elements to direct the composite non-radiated magnetic field toward the target device; and communicating with the target device.
Claim 14
Dependent Claim
49 words
The method of claim 11 , wherein controlling the non-radiated magnetic fields produced by the plurality of transmitting elements to direct the composite non-radiated magnetic field toward the target device comprises individually controlling phase of alternating current power provided to at least some of the plurality of transmitting elements.
Claim 15
Dependent Claim
47 words
The method of claim 11 , wherein controlling the non-radiated magnetic fields produced by the plurality of transmitting elements to direct the composite non-radiated magnetic field toward the target device comprises controlling a plurality of transmitter tuned circuit elements respectively associated with the plurality of transmitting elements.
Claim 16
Dependent Claim
37 words
The method of claim 13 , wherein controlling a plurality of transmitter tuned circuit elements respectively associated with the plurality of transmitting elements comprises altering lumped tuning element settings of the plurality of transmitter tuned circuit elements.
Claim 17
Dependent Claim
25 words
The method of claim 11 , further comprising: receiving feedback from the target device; and using the feedback to direct the composite non-radiated magnetic field.
Claim 18
Dependent Claim
16 words
The method of claim 11 , further comprising authenticating the target device for wireless power delivery.
Claim 19
Dependent Claim
15 words
The method of claim 11 , selecting the target frequency to facilitate transfer of power.
Claim 20
Dependent Claim
24 words
The method of claim 17 , wherein selecting the target frequency comprises selecting the target frequency based upon feedback received from the target device.
Claim 21
Dependent Claim
16 words
The method of claim 11 , further comprising wirelessly transmitting a beacon regarding wireless power delivery.
Claim 22
Dependent Claim
40 words
The method of claim 11 , wherein controlling the non-radiated magnetic fields produced by the plurality of transmitting elements to direct the composite non-radiated magnetic field toward the target device comprises physically controlling orientation of the plurality of transmitting elements.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2014-02-21 | 2014-08-23 | 2015-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2018-02-21 | 2018-08-23 | 2019-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2022-02-21 | 2022-08-23 | 2023-02-22 | $7700.00 | Window Closed / Lapsed |