US 12,347,602 B2
Self-resonant coil with series LC resonance and electric field cancelation
Daniel Jes Costinett, Knoxville, TN (US); Jie Li, Knoxville, TN (US); and Ruiyang Qin, Knoxville, TN (US)
Assigned to University of Tennessee Research Foundation, Knoxville, TN (US)
Appl. No. 18/862,336
Filed by University of Tennessee Research Foundation, Knoxville, TN (US)
PCT Filed May 2, 2023, PCT No. PCT/US2023/020689
§ 371(c)(1), (2) Date Nov. 1, 2024,
PCT Pub. No. WO2023/215286, PCT Pub. Date Nov. 9, 2023.
Claims priority of provisional application 63/337,494, filed on May 2, 2022.
Prior Publication US 2025/0118481 A1, Apr. 10, 2025
Int. Cl. H01F 27/28 (2006.01); H01F 27/32 (2006.01); H01F 27/36 (2006.01); H01F 27/40 (2006.01); H02J 50/12 (2016.01); H02J 50/70 (2016.01)
CPC H01F 27/2804 (2013.01) [H01F 27/2885 (2013.01); H01F 27/323 (2013.01); H01F 27/36 (2013.01); H01F 27/40 (2013.01); H02J 50/12 (2016.02); H02J 50/70 (2016.02); H01F 2027/2809 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A series self-resonant coil structure for wireless power transfer, the coil structure comprising:
a first conductive layer configured in a first planar spiral arrangement, the first conductive layer comprising a first terminal;
a second conductive layer configured in a second planar spiral arrangement, the second conductive layer comprising a second terminal; and
a dielectric layer positioned between the first conductive layer and the second conductive layer;
wherein the first conductive layer, the second conductive layer, and the dielectric layer are configured to produce a repeated serial LC connection between the first terminal and the second terminal; and
wherein the first conductive layer comprises at least one discontinuity and the second conductive layer is continuous at the location of the at least one discontinuity mirrored about the dielectric layer.