US 12,081,037 B2
Antenna module and wireless power transmission device having the same
Shoma Kajikiya, Tokyo (JP); and Noritaka Chiyo, Tokyo (JP)
Assigned to TDK CORPORATION, Tokyo (JP)
Filed by TDK Corporation, Tokyo (JP)
Filed on Feb. 23, 2023, as Appl. No. 18/173,304.
Claims priority of application No. 2022-031038 (JP), filed on Mar. 1, 2022.
Prior Publication US 2023/0283112 A1, Sep. 7, 2023
Int. Cl. H02J 50/70 (2016.01); H01F 27/28 (2006.01); H02J 50/12 (2016.01)
CPC H02J 50/12 (2016.02) [H01F 27/2804 (2013.01); H01F 2027/2809 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An antenna module comprising a first coil pattern including at least first, second, and third turns,
wherein the first turn is positioned in an opening of the second turn,
wherein the second turn is positioned in an opening of the third turn,
wherein each of the first and second turns has an opening width larger in a first direction than in a second direction perpendicular to the first direction,
wherein a first distance between the first and second turns in the second direction is smaller than a second distance between the second and third turns in the second direction,
wherein a third distance between the first and second turns in the first direction is smaller than the first distance,
wherein a fourth distance between the second and third turns in the first direction is smaller than the second distance, and
wherein the third turn has an opening width larger in the second direction than in the first direction.