US 12,482,938 B2
Antenna structure and terminal device
Wei Wang, Beijing (CN); Ching-Sung Wang, Beijing (CN); and Yueliang Li, Beijing (CN)
Assigned to Beijing Xiaomi Mobile Software Co., Ltd., Beijing (CN)
Filed by Beijing Xiaomi Mobile Software Co., Ltd., Beijing (CN)
Filed on Aug. 25, 2023, as Appl. No. 18/456,324.
Claims priority of application No. 202310188948.3 (CN), filed on Feb. 22, 2023.
Prior Publication US 2024/0283153 A1, Aug. 22, 2024
Int. Cl. H01Q 1/24 (2006.01); H01Q 5/335 (2015.01); H01Q 5/357 (2015.01); H01Q 5/50 (2015.01)
CPC H01Q 5/357 (2015.01) [H01Q 1/241 (2013.01); H01Q 5/50 (2015.01)] 19 Claims
OG exemplary drawing
 
1. An antenna structure, wherein the antenna structure is disposed in a terminal device, the terminal device has a curved screen, and the curved screen comprises two curved side edges and two non-curved side edges, and wherein the antenna structure comprises:
a radiator having a first break and a second break located on different sides, wherein the first break is on one of the curved side edges, and the second break is on one of the non-curved side edges;
a feeding point electrically connected to the radiator, wherein the feeding point is located between the first break and the second break, and a length of a radiation arm between the feeding point and the first break is less than a length of a radiation arm between the feeding point and the second break;
a first tuning point electrically connected to the radiator and arranged close to the second break; and
a tuning circuit and a switching circuit, wherein the first tuning point is electrically connected to the tuning circuit, and the tuning circuit is electrically connected to the switching circuit;
wherein the antenna structure has a low-frequency radiation mode that utilizes the radiation arm between the feeding point and the second break for radiation, and in response to different switching states of the switching circuit, the tuning circuit has different impedances to enable the radiator to cover different frequency ranges.