US 11,658,517 B2
Area-apportioned wireless power antenna for maximized charging volume
Md. Nazmul Alam, Lombard, IL (US); and Alberto Peralta, Chicago, IL (US)
Assigned to NUCURRENT, INC., Chicago, IL (US)
Filed by NuCurrent, Inc., Chicago, IL (US)
Filed on Mar. 21, 2022, as Appl. No. 17/699,598.
Application 17/699,598 is a continuation of application No. 16/938,625, filed on Jul. 24, 2020, granted, now 11,283,303.
Prior Publication US 2022/0285995 A1, Sep. 8, 2022
Int. Cl. H02J 50/23 (2016.01); H01Q 7/00 (2006.01); H01F 38/14 (2006.01); H02J 50/40 (2016.01)
CPC H02J 50/23 (2016.02) [H01F 38/14 (2013.01); H01Q 7/00 (2013.01); H02J 50/40 (2016.02)] 20 Claims
OG exemplary drawing
 
1. A wireless transmitter for wireless power transfer to multiple wireless receivers, the wireless transmitter comprising:
a transmitter circuit configured to generate a wireless power signal for transmission; and
a transmitter antenna comprising a conductive wire, the conductive wire including:
a first antenna portion including:
a first antenna terminal,
a second antenna terminal,
at least one first inner turn, the at least one first inner turn having a first inner turn width, and
a first plurality of outer turns including:
a first outer turn, a second outer turn, and a third outer turn, wherein the first outer turn is an outermost turn of the first plurality of outer turns, the second outer turn is inward of the first outer turn, and the third outer turn is inward of the second outer turn, and wherein the third outer turn has a first outer turn width that is greater than the first inner turn width;
a first wire crossover electrically connecting the first outer turn with the second outer turn;
a second wire crossover electrically connecting the second outer turn with the third outer turn; and
a third wire crossover electrically connecting the third outer turn with the at least one first inner turn; and
a second antenna portion including:
a third antenna terminal,
fourth antenna terminal,
at least one second inner turn, the at least one second inner turn having a second inner turn width, and
a second plurality of outer turns including:
a fourth outer turn, a fifth outer turn, and a sixth outer turn, wherein the fourth outer turn is an outermost turn of the second plurality of outer turns, the fifth outer turn is inward of the fourth outer turn, and the sixth outer turn is inward of the fifth outer turn, and wherein the sixth outer turn has a second outer turn width that is greater than the second inner turn width; and
a fourth wire crossover electrically connecting the fourth outer turn with the fifth outer turn;
a fifth wire crossover electrically connecting the fifth outer turn with the sixth outer turn; and
a sixth wire crossover electrically connecting the at least one second inner turn with the sixth outer turn;
wherein the second antenna terminal is in electrical connection with the third antenna terminal; and
wherein the first antenna terminal and fourth antenna terminal are in electrical connection with the transmitter circuit;
wherein the transmitter antenna is configured to transmit the wireless power signal to more than one receiver antenna.