US 11,955,809 B2
Single structure multi mode antenna for wireless power transmission incorporating a selection circuit
Vinit Singh, Austin, TX (US); Alberto Peralta, Chicago, IL (US); Ajit Rajagopalan, Chicago, IL (US); Jason Luzinski, Chicago, IL (US); Jacob Babcock, Chicago, IL (US); and Christine A. Frysz, Orchard Park, NY (US)
Assigned to NuCurrent, Inc., Chicago, IL (US)
Filed by NUCURRENT, INC., Chicago, IL (US)
Filed on Aug. 28, 2018, as Appl. No. 16/115,224.
Application 16/115,224 is a continuation of application No. 14/821,157, filed on Aug. 7, 2015, granted, now 10,063,100.
Prior Publication US 2019/0097461 A1, Mar. 28, 2019
This patent is subject to a terminal disclaimer.
Int. Cl. H02J 50/12 (2016.01); H01F 27/38 (2006.01); H01F 38/14 (2006.01); H02J 50/10 (2016.01); H01F 29/02 (2006.01)
CPC H02J 50/12 (2016.02) [H01F 27/38 (2013.01); H01F 38/14 (2013.01); H02J 50/10 (2016.02); H01F 29/02 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A device, comprising:
a selection circuit; and
an antenna, comprising:
a substrate;
a first conductive trace on the substrate forming a first coil comprising a first number of turns and spaced apart first and second coil ends, wherein the first coil is capable of generating a first inductance, and wherein adjacent turns within the first coil are separated by a first gap width;
a second conductive trace on the substrate forming a second coil comprising a second number of turns and spaced apart third and fourth coil ends, wherein the second coil is electrically connected to the first coil and is capable of generating a second inductance, wherein adjacent turns within the second coil are separated by a second gap width, and wherein the first and second coils are separated by a third gap width that is different than at least one of the first gap width or the second gap width; and
first, second, and third terminals that are electrically connectable to the selection circuit, wherein (i) the first terminal is electrically connected to the first coil end of the first coil, (ii) the second terminal is electrically connected to the fourth coil end of the second coil, and (iii) the third terminal is electrically connected to a junction point that is between the second coil end of the first coil and the third coil end of the second coil; and
wherein the selection circuit is configured to select a given one of multiple possible pairwise combinations of the first, second, and third terminals and thereby causes the antenna to operate in a given one of multiple operating modes in which the antenna generates a given inductance value.