Device for wireless power transfer

A wireless power transfer system, comprising:

• a power source that provides electric power;
• a transmitting antenna that wirelessly transfers to electric power;
• and
• a receiving antenna that wirelessly receives the electric power,
• wherein the transmitting antenna comprises:
• a first conductive sheet comprising:
• (i) a first part that extends in a first direction, and (ii) a second part that extends in a second direction;
• a second conductive sheet comprising:
• (iii) a third part that is parallel to the first part and extends in the first direction, and (iv) a fourth part that is parallel to the second part and extends in the second direction, wherein the first part and the third part are spaced apart by a first distance, and wherein the second part and the fourth part are spaced apart by a second distance different from the first distance;
• and
• a dielectric layer between the first conductive sheet and the second conductive sheet.

A method for wireless power transfer, comprising:

• electrically coupling a feeding port to a first conductive sheet and a second conductive sheet separated by a dielectric layer, wherein the first conductive sheet comprises (i) a first part that extends in a first direction, and (ii) a second part that extends in a second direction, and wherein the second conductive sheet comprises (iii) a third part that is parallel to the first part and extends in the first direction, and (iv) a fourth part that is parallel to the second part and extends in the second direction;
• and
• providing electric power to the first conductive sheet and the second conductive sheet via the feeding port,
• wherein the first part and the third part are spaced apart by a first distance, and
• wherein the second part and the fourth part are spaced apart by a second distance different from the second distance.