US 12,003,116 B2
Wireless power transfer system for simultaneous transfer to multiple devices with cross talk and interference mitigation
Unnati Wadkar, Bangalore (IN); Marc Backas, Chicago, IL (US); Pavel Shostak, San Diego, CA (US); and Glenn Riese, McHenry, IL (US)
Assigned to NuCurrent, Inc., Chicago, IL (US)
Filed by NuCurrent, Inc., Chicago, IL (US)
Filed on Mar. 1, 2022, as Appl. No. 17/683,998.
Prior Publication US 2023/0283115 A1, Sep. 7, 2023
Int. Cl. H02J 50/40 (2016.01); H02J 50/10 (2016.01); H02J 50/80 (2016.01); H04B 5/79 (2024.01); H04L 27/04 (2006.01)
CPC H02J 50/40 (2016.02) [H02J 50/10 (2016.02); H02J 50/80 (2016.02); H04L 27/04 (2013.01); H04B 5/79 (2024.01)] 20 Claims
OG exemplary drawing
 
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.