US 12,469,959 B2
Foldable electronic device and antenna system for same
Yuanpeng Li, Shenzhen (CN); and Dawei Zhou, Shenzhen (CN)
Assigned to HONOR DEVICE CO., LTD., Shenzhen (CN)
Appl. No. 18/577,384
Filed by HONOR DEVICE CO., LTD., Shenzhen (CN)
PCT Filed Aug. 22, 2022, PCT No. PCT/CN2022/114068
§ 371(c)(1), (2) Date Jan. 8, 2024,
PCT Pub. No. WO2023/116006, PCT Pub. Date Jun. 29, 2023.
Claims priority of application No. 202111582246.0 (CN), filed on Dec. 22, 2021.
Prior Publication US 2024/0250410 A1, Jul. 25, 2024
Int. Cl. H01Q 1/24 (2006.01); H01Q 1/48 (2006.01); H01Q 1/52 (2006.01)
CPC H01Q 1/243 (2013.01) [H01Q 1/48 (2013.01); H01Q 1/52 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An antenna system, applied to a foldable electronic device, wherein the foldable electronic device comprises a first body and a second body that are connected to each other and are capable of being folded or unfolded relative to each other; the antenna system comprises:
a main antenna element, comprising a feed point and a first radiating branch disposed on the first body, wherein the main antenna element is an antenna structure having a radiation characteristic of a current loop antenna, and the feed point is used to feed the first radiating branch; and
a parasitic antenna element, comprising a second radiating branch disposed on the second body; and
when the electronic device is in a folded state, the first radiating branch and the second radiating branch are at least partially overlapped, the first radiating branch is configured to perform magnetic field coupling with the second radiating branch, to form current loop radiation on both the first radiating branch and the second radiating branch, and a current direction in a current loop formed on the first radiating branch is the same as a current direction in a current loop formed on the second radiating branch,
wherein the electronic device further comprises a first reference ground corresponding to the first body and a second reference ground corresponding to the second body; and
when the electronic device is in the folded state, the main antenna element is configured to excite a closed current loop on the first radiating branch and the first reference ground, and is configured to perform magnetic field coupling with the parasitic antenna element, to excite a closed current loop on the second radiating branch and the second reference ground, wherein the current direction on the first radiating branch is the same as the current direction on the second radiating branch, the current direction on the first radiating branch is opposite to a current direction on the first reference ground, the current direction on the second radiating branch is opposite to a current direction on the second reference ground, and the current direction on the first reference ground is the same as the current direction on the second reference ground.