# US 12,003,116 B2 · Wireless power transfer system for simultaneous transfer to multiple devices with cross talk and interference mitigation > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,003,116 B2 - Document ID: US12003116B2 - Status: Granted - Kind: B2 - Application number: 17/683,998 - Filed: 2022-03-01 - Published: 2023-09-07 - Granted: 2024-06-04 - Earliest claimed: 2022-03-01 - Assignees: NuCurrent, Inc. - Applicants: NuCurrent, Inc. - Inventors: Unnati Wadkar; Marc Backas; Pavel Shostak; Glenn Riese - Web page: https://patentgrep.com/patent/US12003116B2 ## CPC - H02J 50/40: using two or more transmitting or receiving devices (H02J50/50 takes precedence) - H02J 7/42: with electronic devices having internal batteries, e.g. mobile phones - H02J 50/10: using inductive coupling - H02J 50/12: of the resonant type - H02J 50/20: using microwaves or radio frequency waves - H02J 50/402: {the two or more transmitting or the two or more receiving devices being integrated in the same unit, e.g. power mats with several coils or antennas with several sub-antennas} - H02J 50/80: involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices - H04L 27/04: Modulator circuits; Transmitter circuits - H04B 5/79: for data transfer in combination with power transfer - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04B: TRANSMISSION ## Abstract A dual wireless power transfer system is disclosed having an input power supply providing power at a first voltage V1 and a first wireless power transmission system receiving power at a first power input from the input power supply, the first wireless power transmission system including a first transmitter antenna and a first driver for driving the first transmitter antenna for wireless power transmission to a first wireless receiver system and wireless receipt of data from the first receiver system, wherein data wirelessly received at the first transmitter antenna from the first receiver system at least partially feeds back onto the first power input. A second wireless power transmission system includes a second transmitter antenna and a second driver for driving the second transmitter antenna for wireless power transmission to a second wireless receiver system. A low voltage drop out receives power from the input power supply at V1 and provides power at a preselected lower voltage V2 to the second wireless power transmission system, such that V2 is independent of data received at the first transmitter antenna. ## Claims ### Claim 1 A wireless power transfer system comprising: an input power supply configured to provide power at a first voltage V1; a first wireless power transmission system configured to receive power at a first power input from the input power supply, the first wireless power transmission system including a first transmitter antenna and a first transfer circuit for driving the first transmitter antenna for wireless power transmission to a first wireless receiver system and wireless receipt of data from the first wireless receiver system, wherein data wirelessly received at the first transmitter antenna from the first wireless receiver system at least partially feeds back onto the first power input and causes V1 to vary over a range of V1, the range of V1 having a lowest value; a second wireless power transmission system configured to receive power at a second power input from a low voltage drop out, the second wireless power transmission system including a second transmitter antenna and a second transfer circuit for driving the second transmitter antenna for wireless power transmission to a second wireless receiver system; and the low voltage drop out, wherein the low voltage drop out is configured to: receive power at the first power input including at least some of the data received at the first transmitter antenna that is partially fed back onto the first power input; and according to settings of the low voltage drop out that cause the low voltage drop out to provide power at a preselected voltage V2 that is preselected to remain at or below the lowest value of the range of V1, provide power at V2 to the second wireless power transmission system as the second power input, such that (i) V2 is independent of the data received at the first transmitter antenna that is at least partially fed back onto the first power input, and (ii) the second wireless power transmission system is isolated from the first power input and the data received at the first transmitter antenna that is partially fed back onto the first power input. ### Claim 2 (depends on 1) The wireless power transfer system of claim 1, wherein the first and second transfer circuits each comprise an H-Bridge. ### Claim 3 (depends on 2) The wireless power transfer system of claim 2, wherein the data wirelessly received at the first transmitter antenna that at least partially feeds back onto the first power input is fed back by a power input of the H-Bridge. ### Claim 4 (depends on 1) The wireless power transfer system of claim 1, wherein one or both of the first and second wireless receiver systems includes a powered load. ### Claim 5 (depends on 4) The wireless power transfer system of claim 4, wherein the load is an electrical energy storage device. ### Claim 6 (depends on 1) The wireless power transfer system of claim 1, wherein the first and second wireless power transmission systems further include respective transmission controllers configured to provide respective antenna signals to the respective transfer circuits. ### Claim 7 (depends on 1) The wireless power transfer system of claim 1, wherein the data is coded via amplitude shift keying (ASK). ### Claim 8 (depends on 1) The wireless power transfer system of claim 1, wherein each of the first transmission antenna and the second transmission antenna is configured to operate based on an operating frequency of about 88-360 kHz. ### Claim 9 A wireless power transfer system comprising: an input power supply configured to provide power at a first voltage V1; a first wireless receiver system and a second wireless receiver system, each being configured to wirelessly receive power from a respective wireless power transmission system via a wireless power protocol and to wirelessly transmit data to the respective wireless power transmission system via the wireless power protocol; a first wireless power transmission system configured to receive power at a first power input from the input power supply, the first wireless power transmission system including a first transmitter antenna and a first transfer circuit for driving the first transmitter antenna for wireless power transmission to the first wireless receiver system and wireless receipt of data from the first wireless receiver system, wherein data wirelessly received at the first transmitter antenna from the first wireless receiver system at least partially feeds back onto the first power input and causes V1 to vary over a range of V1, the range of V1 having a lowest value; a second wireless power transmission system configured to receive power at a second power input from a low voltage drop out, the second wireless power transmission system including a second transmitter antenna and a second transfer circuit for driving the second transmitter antenna for wireless power transmission to a second wireless receiver system; and the low voltage drop out, wherein the low voltage drop out is configured to: receive power at the first power input including at least some of the data received at the first transmitter antenna that is partially fed back onto the first power input; and according to settings of the low voltage drop out that cause the low voltage drop out to provide power at a preselected voltage V2 that is preselected to remain at or below the lowest value of the range of V1, provide power at V2 to the second wireless power transmission system as the second power input, such that (i) V2 is independent of the data received at the first transmitter antenna that is at least partially fed back onto the first power input, and (ii) the second wireless power transmission system is isolated from the first power input and the data received at the first transmitter antenna that is partially fed back onto the first power input. ### Claim 10 (depends on 9) The wireless power transfer system of claim 9, wherein the first and second transfer circuits each comprise an H-Bridge and wherein the data wirelessly received at the first transmitter antenna that at least partially feeds back onto the first power input is fed back by a power input of the H-Bridge associated with the first transmitter antenna. ### Claim 11 (depends on 9) The wireless power transfer system of claim 9, wherein one or both of the first and second wireless receiver systems includes a powered load. ### Claim 12 (depends on 11) The wireless power transfer system of claim 11, wherein the load is an electrical energy storage device. ### Claim 13 (depends on 9) The wireless power transfer system of claim 9, wherein the first and second wireless power transmission systems further include respective transmission controllers configured to provide respective antenna signals to respective antenna drivers. ### Claim 14 (depends on 9) The wireless power transfer system of claim 9, wherein the data is coded via amplitude shift keying (ASK). ### Claim 15 (depends on 9) The wireless transfer system of claim 9, wherein each of the first transmission antenna and the second transmission antenna is configured to operate based on an operating frequency of about 88-360 kHz. ### Claim 16 A wireless power transmission system comprising: a power input configured to receive electrical power; a first wireless power transmission system configured to receive power from the power input, the first wireless power transmission system including a first transmitter antenna and a first transfer circuit for driving the first transmitter antenna for wireless power transmission to a first wireless receiver system and wireless receipt of data from the first wireless receiver system, wherein data wirelessly received at the first transmitter antenna from the first wireless receiver system at least partially feeds back onto the power input and causes voltage variations on the power input over a range of voltage variations on the power input that has a lowest value; a second wireless power transmission system configured to receive power from a voltage reduction element, the second wireless power transmission system including a second transmitter antenna and a second transfer circuit for driving the second transmitter antenna for wireless power transmission to a second wireless receiver system; and the voltage reduction element, wherein the voltage reduction element is configured to: receive power from the power input including the data received at the first transmitter antenna that at least partially feeds back onto the power input; and according to settings of the voltage reduction element that cause the voltage reduction element to provide power at a preselected voltage that is preselected to remain at or below the lowest value of the range of voltage variations on the power input, provide power to the second wireless power transmission system, wherein the power output by the voltage reduction element is independent of voltage variations on the power input, such that the second wireless power transmission system is isolated from the power input and the data received at the first transmitter antenna that is partially fed back onto the power input. ### Claim 17 (depends on 16) The wireless power transmission system of claim 16, wherein the first and second transfer circuits each comprise an H-Bridge. ### Claim 18 (depends on 17) The wireless power transmission system of claim 17, wherein the data wirelessly received at the first transmitter antenna that at least partially feeds back onto the first power input is fed back by a power input of the H-Bridge. ### Claim 19 (depends on 16) The wireless power transmission system of claim 16, wherein one or both of the first and second wireless receiver systems includes a powered load. ### Claim 20 (depends on 19) The wireless power transmission system of claim 19, wherein the load is an electrical energy storage device.