US 12,132,328 B2
Electronic device to improve the efficiency of wireless charging
Yusu Kim, Suwon-si (KR); Dohyeon Kim, Suwon-si (KR); Seho Park, Suwon-si (KR); and Byunghwa Park, Suwon-si (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Jan. 25, 2022, as Appl. No. 17/583,773.
Application 17/583,773 is a continuation of application No. PCT/KR2021/020022, filed on Dec. 28, 2021.
Claims priority of application No. 10-2020-0185157 (KR), filed on Dec. 28, 2020.
Prior Publication US 2022/0209581 A1, Jun. 30, 2022
Int. Cl. H02J 50/12 (2016.01); H04B 5/26 (2024.01); H04B 5/79 (2024.01)
CPC H02J 50/12 (2016.02) [H04B 5/26 (2024.01); H04B 5/79 (2024.01)] 22 Claims
OG exemplary drawing
 
11. A circuit board on which a coil for wireless charging of an electronic device is disposed, the circuit board comprising:
a first portion and a second portion disposed adjacent to the first portion,
wherein a first coil, a second coil, and a resonance coil are disposed in the first portion,
wherein the first coil is disposed outside the second coil and the resonance coil being disposed inside the second coil,
wherein a third coil and a resonance capacitor are disposed in the second portion,
wherein the resonance capacitor is disposed inside the third coil, and
wherein the resonance coil and the resonance capacitor are electrically connected to each other to generate a designated resonance.