US 9,812,765 B2
Antenna assembly and mobile terminal using same
Ng Guan Hong, Shenzhen (CN); and Tay Yew Siow, Shenzhen (CN)
Assigned to AAC TECHNOLOGIES PTE. LTD., Singapore (SG)
Filed by Ng Guan Hong, Shenzhen (CN); and Tay Yew Siow, Shenzhen (CN)
Filed on Mar. 18, 2014, as Appl. No. 14/217,634.
Claims priority of application No. 2013 1 0096530 (CN), filed on Mar. 22, 2013.
Prior Publication US 2014/0285384 A1, Sep. 25, 2014
Int. Cl. H01Q 1/24 (2006.01); H01Q 5/371 (2015.01)
CPC H01Q 1/243 (2013.01) [H01Q 5/371 (2015.01)] 4 Claims
OG exemplary drawing
 
1. An antenna assembly for a mobile terminal, comprising:
a metal frame provided with a closed first loop portion, a second loop portion and connecting rods that connected the first loop portion with the second loop portion,
a grounding plate located between the first loop portion and the second loop portion, and fixed on the connecting rods, so that the antenna assembly is grounded via the grounding plate,
an antenna body provided with an unclosed loop structure used as a radiating portion of the antenna assembly and a T-shaped branch portion used as a feeding portion of the antenna assembly that extends vertically from an end of the radiating portion in a direction away from the radiating portion,
wherein the radiation portion is received in the first loop portion, the first loop portion surrounds an outer periphery of the radiation portion, and an annular gap is formed between the first loop portion and the radiation portion,
the T-shaped branch portion comprises a first branch strip that connects with the radiating portion and a second branch strip that extends vertically from the first branch strip toward the grounding plate, and the radiating portion and the branch portion are formed integrally, the branch portion is located between the radiating portion and the grounding plate, and the second branch strip keeps a distance from the grounding plate.