US Patent 11784397 Wearable device

A wearable device includes a first radiation element, a second radiation element, a third radiation element, and a dielectric substrate. The first radiation element has a feeding point. The second radiation element is coupled to a ground voltage, and is disposed adjacent to the first radiation element. The third radiation element is coupled to the ground voltage, and is disposed adjacent to the first radiation element. The third radiation element is at least partially surrounded by the first radiation element. The first radiation element, the second radiation element, and the third radiation element are disposed on the dielectric substrate. An antenna structure is formed by the first radiation element, the second radiation element, and the third radiation element.