Abstract: An antenna-in-module includes a ground plate, three radiating elements, and two feed stubs. A first radiating element and a ground plate are arranged at an interval along a Z-axis and are disposed opposite to each other. The first radiating element and a second radiating element are arranged at an interval along an X-axis. A first gap between the first radiating element and the second radiating element extends along a Y-axis. A third radiating element and the second radiating element are arranged at an interval along the Z-axis and are disposed opposite to each other. At least a part of a first feed stub is disposed in a first aperture that includes space between the first gap and the ground plate. At least a part of a second feed stub is disposed in a second aperture that includes space between the second radiating element and the third radiating element.

Abstract: An electronic device includes a radiator, a first feed circuit, and a second feed circuit. The radiator includes a first branch. The first feed circuit feeds the radiator at a first end of the first branch, and the second feed circuit feeds the radiator at a first position in the first branch. The first position is in an area with a largest current in the first branch when the first feed circuit performs feeding and the second feed circuit does not perform feeding.

Abstract: An antenna structure includes a board unit and a coil unit. The board unit includes a metal board and an insulating board connected with or adjacent to the metal board, and the coil unit is disposed beside the same side of the metal board and the insulating board. In one embodiment, when one narrow side of the metal board and one narrow side of the insulating board connects with each other, the coil unit is disposed right under the commissure of the metal board and the insulating board. In addition, more than half or half of the area of the coil unit is covered by the insulating board, and less than half or half of the area of the coil unit is covered by the metal board. The current direction on the metal board and the current direction on the coil unit are the same as clockwise or counterclockwise.

Abstract: An antenna structure includes a board unit and a coil unit. The board unit includes a metal board and an insulating board connected with or adjacent to the metal board, and the coil unit is disposed beside the same side of the metal board and the insulating board. In one embodiment, when one narrow side of the metal board and one narrow side of the insulating board connects with each other, the coil unit is disposed right under the commissure of the metal board and the insulating board. In addition, more than half or half of the area of the coil unit is covered by the insulating board, and less than half or half of the area of the coil unit is covered by the metal board. The current direction on the metal board and the current direction on the coil unit are the same as clockwise or counterclockwise.