# US 10,122,222 B2 · Magnetic power transmission utilizing phased transmitter coil arrays and phased receiver coil arrays > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,122,222 B2 - Document ID: US10122222B2 - Status: Granted - Kind: B2 - Application number: 15/717,271 - Filed: 2017-09-27 - Published: 2018-02-08 - Granted: 2018-11-06 - Earliest claimed: 2012-07-27 - Assignees: Tc1 LLC - Applicants: Tc1 LLC - Inventors: John Freddy Hansen; Ethan Petersen - Web page: https://patentgrep.com/patent/US10122222B2 ## CPC - H02J 50/90: involving detection or optimisation of position, e.g. alignment - A61N 1/37229: {Shape or location of the implanted or external antenna} - A61N 1/3787: {from an external energy source} - H01F 38/14: Inductive couplings - H02J 50/12: of the resonant type - H02J 50/80: involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - A61N: ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY (measurement of bioelectric currents A61B; surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body A61B18/00; anaesthetic apparatus in general A61M; incandescent lamps H01K; infrared radiators for heating H05B) - H01F: MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES ## Abstract An improved wireless transmission system for transferring power over a distance. The system includes a transmitter generating a magnetic field and a receiver for inducing a voltage in response to the magnetic field. In some embodiments, the transmitter can include a plurality of transmitter resonators configured to transmit wireless power to the receiver. The transmitter resonators can be disposed on a flexible substrate adapted to conform to a patient. In one embodiment, the polarities of magnetic flux received by the receiver can be measured and communicated to the transmitter, which can adjust polarities of the transmitter resonators to optimize power transfer. Methods of use are also provided. ## Claims ### Claim 1 A wireless power transmitter, comprising: coil circuitry including at least two transmit resonators; and driver circuitry including a voltage source, the driver circuitry configured to excite the coil circuitry to transmit wireless power from the at least two transmit resonators to a receiver, wherein the driver circuitry is configured to adjust the transmission of wireless power based on a magnetic flux polarity of magnetic flux received by the receiver from each of the at least two transmit resonators, the magnetic flux polarity recorded at the receiver and communicated to the wireless power transmitter, and wherein the magnetic flux polarity is defined by a direction in which magnetic flux passes through the receiver. ### Claim 2 (depends on 1) The transmitter of claim 1 wherein the coil circuitry includes four transmit resonators. ### Claim 3 (depends on 2) The transmitter of claim 2 wherein the four transmit resonators are arranged in a 2×2 array. ### Claim 4 (depends on 1) The transmitter of claim 1 wherein the transmit resonators are operated out of phase relative to one another. ### Claim 5 (depends on 1) The transmitter of claim 1 wherein the transmit resonators are operated in phase relative to one another. ### Claim 6 (depends on 1) The transmitter of claim 1 wherein at least first and second transmit resonators of the transmit resonators are operated in phase relative to one another, and wherein at least a third transmit resonator is operated out of phase relative to the first and second transmit resonators. ### Claim 7 (depends on 1) The transmitter of claim 1, wherein the at least two transmit resonators lie in the same plane. ### Claim 8 (depends on 1) The transmitter of claim 1, wherein the at least two transmit resonators are oriented orthogonal to one another. ### Claim 9 (depends on 1) The transmitter of claim 1, wherein the at least two transmit resonators comprise a first transmit resonator circumscribing a second transmit resonator. ### Claim 10 (depends on 1) The transmitter of claim 1, further comprising a capacitor coupled to the at least two transmit resonators to compensate for mutual inductance changes. ### Claim 11 (depends on 1) The transmitter of claim 1, wherein the at least two transmit resonators are disposed on a flexible substrate. ### Claim 12 (depends on 11) The transmitter of claim 11, wherein the flexible substrate comprises a flexible fabric. ### Claim 13 A wireless power transfer system, comprising: first and second transmitter resonators configured to transmit wireless power to a receiver resonator implanted within a patient; a receive controller configured to measure first and second polarities of magnetic flux received by the receiver resonator from the first and second transmitter resonators, respectively, the first and second magnetic flux polarities defined by a direction in which the magnetic flux from the first and second transmitter resonators passes through the receiver resonator, the receive controller configured to communicate the measured first and second polarities to a transmit controller of the first and second transmitter resonators; the transmit controller being configured to adjust transmission of power from the first and second transmitter resonators to the receiver resonator based on the measured first and second polarities to maximize power transfer. ### Claim 14 (depends on 13) The wireless power transfer system of claim 13, wherein the first and second transmitter resonators are operated out of phase relative to one another. ### Claim 15 (depends on 13) The wireless power transfer system of claim 13, wherein the first and second transmitter resonators are operated in phase relative to one another. ### Claim 16 (depends on 13) The wireless power transfer system of claim 13, wherein the first and second transmitter resonators lie in the same plane. ### Claim 17 (depends on 13) The wireless power transfer system of claim 13, wherein the first and second transmitter resonators are oriented orthogonal to one another. ### Claim 18 (depends on 13) The wireless power transfer system of claim 13, wherein the first and second transmitter resonators comprise a first transmitter resonator circumscribing a second transmitter resonator. ### Claim 19 (depends on 13) The wireless power transfer system of claim 13, further comprising a capacitor coupled to the first and second transmitter resonators to compensate for mutual inductance changes. ### Claim 20 (depends on 13) The wireless power transfer system of claim 13, wherein the first and second transmitter resonators are disposed on a flexible substrate.